Merge remote-tracking branch 'upstream/main'

prepare 2.50.0

.github/workflows/artifacts.yml

@@ -1,20 +0,0 @@
-name: add artifact links to pull request
-on:
-  workflow_run:
-    workflows: ["Upload Preview APK"]
-    types: [completed]
-
-jobs:
-  artifacts-url-comments:
-    name: add artifact links to pull request
-    runs-on: ubuntu-latest
-    if: ${{ github.event.workflow_run.conclusion == 'success' }}
-    steps:
-      - name: add artifact links to pull request
-        uses: tonyhallett/artifacts-url-comments@v1.1.0
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          prefix: "**To test the changes in this pull request, install this apk:**"
-          format: "[📦 {name}]({url})"
-          addTo: pull

.github/workflows/cache-core.yml

@@ -10,21 +10,24 @@ on:
       - 'jni/dc_wrapper.c'
       - 'scripts/ndk-make.sh'
 
+permissions: {}
+
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: recursive
+          persist-credentials: false
 
-      - uses: android-actions/setup-android@v3
-      - uses: nttld/setup-ndk@v1
+      - uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1
+      - uses: nttld/setup-ndk@ed92fe6cadad69be94a966a7ee3271275e62f779 # v1.6.0
         id: setup-ndk
         with:
           ndk-version: r27
 
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: jni/deltachat-core-rust
 
@@ -34,7 +37,7 @@ jobs:
 
       - name: Cache compiled core
         id: cache-core
-        uses: actions/cache@v4
+        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: |
             jni/arm64-v8a

.github/workflows/code-format.yml

@@ -5,6 +5,8 @@ on:
     branches: [main]
   pull_request:
 
+permissions: {}
+
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
@@ -16,12 +18,16 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
-      - uses: actions/setup-java@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           java-version: 17
           distribution: temurin
-      - uses: actions/cache@v4
+      - name: Restore Gradle cache
+        id: gradle-cache
+        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: |
             ~/.gradle/caches
@@ -30,6 +36,14 @@ jobs:
           restore-keys: |
             ${{ runner.os }}-gradle-
       - name: Validate Gradle Wrapper
-        uses: gradle/actions/wrapper-validation@v4
+        uses: gradle/actions/wrapper-validation@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e # v6.1.0
       - name: Check formatting
         run: ./gradlew spotlessCheck
+      - name: Save Gradle cache
+        if: github.event_name == 'push' && steps.gradle-cache.outputs.cache-hit != 'true'
+        uses: actions/cache/save@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}

.github/workflows/preview-apk.yml

@@ -6,24 +6,31 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/main' }}
 
+permissions: {}
+
 jobs:
   build:
     name: Upload Preview APK
+    if: github.event.pull_request.head.repo.full_name == github.repository
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: recursive
+          persist-credentials: false
 
       - name: Validate Fastlane Metadata
-        uses: ashutoshgngwr/validate-fastlane-supply-metadata@v2
+        uses: ashutoshgngwr/validate-fastlane-supply-metadata@c8857fdbbd3e00f9a5cbe8604bcecfa95ce8fef8 # v2.1.0
 
-      - uses: actions/setup-java@v5
+      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           java-version: 17
           distribution: 'temurin'
 
-      - uses: actions/cache@v4
+      - uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: |
             ~/.gradle/caches
@@ -33,15 +40,15 @@ jobs:
             ${{ runner.os }}-gradle-
 
       - name: Validate Gradle Wrapper
-        uses: gradle/actions/wrapper-validation@v4
+        uses: gradle/actions/wrapper-validation@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e # v6.1.0
 
-      - uses: android-actions/setup-android@v3
-      - uses: nttld/setup-ndk@v1
+      - uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1
+      - uses: nttld/setup-ndk@ed92fe6cadad69be94a966a7ee3271275e62f779 # v1.6.0
         id: setup-ndk
         with:
           ndk-version: r27
 
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           workspaces: jni/deltachat-core-rust
 
@@ -51,7 +58,7 @@ jobs:
 
       - name: Restore compiled core
         id: core-cache
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
         with:
           path: |
             jni/arm64-v8a
@@ -70,7 +77,22 @@ jobs:
         run: ./gradlew --no-daemon -PABI_FILTER=arm64-v8a assembleFossDebug
 
       - name: Upload APK
-        uses: actions/upload-artifact@v4
+        id: upload
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: app-preview.apk
           path: 'build/outputs/apk/foss/debug/*.apk'
+
+      - name: Add artifact links to PR
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
+        env:
+          ARTIFACT_URL: ${{ steps.upload.outputs.artifact-url }}
+        with:
+          script: |
+            const url = process.env.ARTIFACT_URL;
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: context.issue.number,
+              body: `**To test the changes in this pull request, install this apk:**\n\n[📦 app-preview.apk](${url})`,
+            });

.github/workflows/release.yml

@@ -23,18 +23,18 @@ jobs:
     name: Upload Release APK
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           submodules: recursive
-      - uses: Swatinem/rust-cache@v2
+      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
         with:
           working-directory: jni/deltachat-core-rust
-      - uses: actions/setup-java@v3
+      - uses: actions/setup-java@be666c2fcd27ec809703dec50e508c2fdc7f6654 # v5.2.0
         with:
           java-version: 17
           distribution: 'temurin'
-      - uses: android-actions/setup-android@v3
-      - uses: nttld/setup-ndk@v1
+      - uses: android-actions/setup-android@40fd30fb8d7440372e1316f5d1809ec01dcd3699 # v4.0.1
+      - uses: nttld/setup-ndk@ed92fe6cadad69be94a966a7ee3271275e62f779 # v1.6.0
         id: setup-ndk
         with:
           ndk-version: r27
@@ -63,7 +63,7 @@ jobs:
           mv build/outputs/mapping/gplayRelease/mapping.txt build/outputs/mapping/fossRelease/mapping-gplay.txt
 
       - name: Release on GitHub
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda # v3.0.0
         with:
           token: "${{ secrets.GITHUB_TOKEN }}"
           body: '[<img src="store/get-it-on-gplay.png" alt="Get it on Google Play" height="48">](https://play.google.com/store/apps/details?id=com.github.arcanechat) [<img src="store/get-it-on-fdroid.png" alt="Get it on F-Droid" height="48">](https://f-droid.org/packages/chat.delta.lite) [<img src="store/get-it-on-github.png" alt="Get it on GitHub" height="48">](https://github.com/ArcaneChat/android/releases/latest/download/ArcaneChat-gplay.apk)'

.github/workflows/zizmor-scan.yml

@@ -0,0 +1,26 @@
+name: GitHub Actions Security Analysis with zizmor
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["**"]
+
+permissions: {}
+
+jobs:
+  zizmor:
+    name: Run zizmor
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write # Required for upload-sarif (used by zizmor-action) to upload SARIF files.
+      contents: read
+      actions: read
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run zizmor
+        uses: zizmorcore/zizmor-action@b1d7e1fb5de872772f31590499237e7cce841e8e # v0.5.3

.github/zizmor.yml

@@ -0,0 +1,6 @@
+rules:
+  unpinned-uses:
+    config:
+      policies:
+        actions/*: ref-pin
+        dependabot/*: ref-pin

BUILDING.md

@@ -243,3 +243,15 @@ $ANDROID_NDK_ROOT/ndk-stack --sym obj/local/armeabi-v7a --dump crash.txt > decod
 `obj/local/armeabi-v7a` is the extracted path from `deltachat-gplay-release-X.X.X.apk-symbols.zip` file from https://download.delta.chat/android/symbols/
 
 Replace `armeabi-v7a` by the correct architecture the logs come from (can be guessed by trial and error)
+
+
+### Deobfuscating Java Stack Traces
+
+Because the app uses code minification (ProGuard/R8), Java stack traces in crash reports are obfuscated.
+To decode them, use `retrace` with the `mapping.txt` file that is included in the symbols zip:
+
+```
+retrace mapping.txt crash.txt > decoded-crash.txt
+```
+
+`mapping.txt` is extracted from the same `deltachat-gplay-release-X.X.X.apk-symbols.zip` file available at https://download.delta.chat/android/symbols/

CHANGELOG-upstream.md

@@ -1,9 +1,44 @@
 # Delta Chat Android Changelog
 
-## Unreleased
+## v2.50.0
+2026-05
 
 * Better incoming call system integration
 * Calls are not experimental anymore and don't need to be manually enabled
+* Calls can be answered by tapping messages
+* Notify the user when they try to make a call while the device is offline
+* Channels are no longer experimental and are available by default
+* Display a permanent notification when doing location streaming and get rid of dangerous "Access Location in Background" permission
+* Autoplay all voice messages in a chat
+* Allow to share location for 24 hours
+* Allow mini-apps to play audio without user interaction
+* Allow to paste and open invitation links from search
+* Mark chats as unread (long tap a chat and select the corresponding option from the three-dot-menu)
+* Add "Mark all as read" option to profile menu in the profile switcher
+* Fix process of upgrading from a very old version of the app
+* Show more recent added stickers at the top of the sticker picker
+* Allow to open links in messages via actions in TalkBack menu
+* Allow to open map if user clicks "Location streaming enabled" system message
+* Allow to disable incoming calls notifications
+* Add an option to process unencrypted messages; by default, only encrypted messages can be sent or received
+* Fix: do not accidentally set draft in chats that don't allow sending messages
+* Fix swipe navigation between tabs in RTL languages
+* Remove "Move to DeltaChat folder", in case you are using the option, a device message shows how to proceed
+* Remove "Only fetch from DeltaChat folder" option, the functionality is preserved for existing profiles
+* Remove "Delete Messages from Server" option, this is now up to the server:
+  Chatmail handles that automatically, classic email servers used as relay often have lots of storage or options themselves
+* Remove "Show Email" options, all messages are shown by default, shared usage of email account is not supported
+* Allow otherwise invalid TLS connections if the key is unchanged
+* Adapt quota warning to automatic cleanup.
+* Don't show non-delivery-notfications in broadcast channels
+* Resend the last 10 messages to new broadcast channel member
+* Enable PQC (Post-Quantum Cryptography) support. We do not generate PQC keys yet, this step is needed for forward compatibility
+* Improve avatar quality
+* Fix: avoid invalid empty "~" notifications when some peer is streaming location
+* Fix: Improve detection of stickers
+* Fix text direction issues for RTL languages in "Show full message" view
+* Fix: Reconnect when removing a relay
+* Update to core 2.50.0
 
 ## v2.49.0
 2026-04

build.gradle

@@ -34,8 +34,8 @@ android {
     useLibrary 'org.apache.http.legacy'
 
     defaultConfig {
-        versionCode 30000742
-        versionName "2.49.0"
+        versionCode 30000743
+        versionName "2.50.0"
 
         applicationId "chat.delta.lite"
         multiDexEnabled true
@@ -223,7 +223,7 @@ spotless {
     }
     format 'xml', {
         target 'src/*/res/**/*.xml', 'src/*/AndroidManifest.xml'
-        targetExclude 'src/*/res/values*/strings.xml' // line-break changes invalidate translations
+        targetExclude 'src/*/res/values*/strings*.xml' // line-break changes invalidate translations
         eclipseWtp('xml').configFile('spotless/eclipse-wtp-xml.prefs')
         trimTrailingWhitespace()
         endWithNewline()
@@ -307,6 +307,7 @@ dependencies {
         exclude group: 'com.google.firebase', module: 'firebase-analytics'
         exclude group: 'com.google.firebase', module: 'firebase-measurement-connector'
     }
+    gplayImplementation 'com.google.android.gms:play-services-location:21.3.0'
 
     testImplementation 'junit:junit:4.13.2'
     testImplementation 'org.assertj:assertj-core:3.27.3'

fastlane/metadata/android/en-US/full_description.txt

@@ -25,7 +25,7 @@ ArcaneChat is a Delta Chat client and was created with a focus on usability, goo
 <li>Multiple color themes/skins</li>
 <li>It is possible to disable profiles to completely disconnect them saving data/bandwidth</li>
 <li>You can easily see the connection status of all your profiles in the profile switcher</li>
-<li>Extra option to share location for 12 hours</li>
+<li>Extra option to share location for 24 hours</li>
 <li>Clicking on a message with a POI location, will open the POI on the map</li>
 <li>Last-seen status of contacts is shown in your contact list, like in WhatsApp, Telegram, etc.</li>
 <li>Videos are played in loop, useful for short GIF videos</li>

jni/dc_wrapper.c

@@ -1393,6 +1393,7 @@ JNIEXPORT jint Java_com_b44t_messenger_DcMsg_getId(JNIEnv *env, jobject obj)
     return dc_msg_get_id(get_dc_msg(env, obj));
 }
 
+
 JNIEXPORT jstring Java_com_b44t_messenger_DcMsg_getText(JNIEnv *env, jobject obj)
 {
     char* temp = dc_msg_get_text(get_dc_msg(env, obj));
@@ -1642,12 +1643,6 @@ JNIEXPORT void Java_com_b44t_messenger_DcMsg_setHtml(JNIEnv *env, jobject obj, j
 }
 
 
-JNIEXPORT void Java_com_b44t_messenger_DcMsg_forceSticker(JNIEnv *env, jobject obj)
-{
-    dc_msg_force_sticker(get_dc_msg(env, obj));
-}
-
-
 JNIEXPORT jstring Java_com_b44t_messenger_DcMsg_getPOILocation(JNIEnv *env, jobject obj)
 {
     char* temp = dc_msg_get_poi_location(get_dc_msg(env, obj));

scripts/upload-release.sh

@@ -34,6 +34,7 @@ cd ../..
 SYMBOLS_ZIP="$APK-symbols.zip"
 rm $SYMBOLS_ZIP
 zip -r $SYMBOLS_ZIP obj
+zip $SYMBOLS_ZIP build/outputs/mapping/gplayRelease/mapping.txt
 ls -l $SYMBOLS_ZIP
 rsync --progress $SYMBOLS_ZIP jekyll@download.delta.chat:/var/www/html/download/android/symbols/
 

src/androidTest/java/com/b44t/messenger/uibenchmarks/EnterChatsBenchmark.java

@@ -39,7 +39,7 @@ public class EnterChatsBenchmark {
   // PLEASE BACKUP YOUR ACCOUNT BEFORE RUNNING THIS!
   // ==============================================================================================
 
-  private static final String TAG = EnterChatsBenchmark.class.getSimpleName();
+  private static final String TAG = "EnterChatsBenchmark";
 
   @Rule
   public ActivityScenarioRule<ConversationListActivity> activityRule =

src/foss/java/org/thoughtcrime/securesms/geolocation/LocationSourceFactory.java

@@ -0,0 +1,17 @@
+package org.thoughtcrime.securesms.geolocation;
+
+import android.content.Context;
+import android.util.Log;
+
+/** Non-GMS, always uses the platform LocationManager. */
+public final class LocationSourceFactory {
+
+  private static final String TAG = "LocationSourceFactory";
+
+  private LocationSourceFactory() {}
+
+  public static LocationSource create(Context context) {
+    Log.i(TAG, "Non-GMS build, Using platform LocationManager");
+    return new PlatformLocationSource();
+  }
+}

src/gplay/java/org/thoughtcrime/securesms/geolocation/GmsLocationSource.java

@@ -0,0 +1,61 @@
+package org.thoughtcrime.securesms.geolocation;
+
+import android.content.Context;
+import android.location.Location;
+import android.os.Looper;
+import android.util.Log;
+import androidx.annotation.NonNull;
+import com.google.android.gms.location.FusedLocationProviderClient;
+import com.google.android.gms.location.LocationCallback;
+import com.google.android.gms.location.LocationRequest;
+import com.google.android.gms.location.LocationResult;
+import com.google.android.gms.location.LocationServices;
+import com.google.android.gms.location.Priority;
+
+public class GmsLocationSource implements LocationSource {
+
+  private static final String TAG = "GmsLocationSource";
+  private static final long UPDATE_INTERVAL_MS = 3_000;
+  private static final long FASTEST_INTERVAL_MS = 1_000;
+
+  private FusedLocationProviderClient client;
+  private LocationCallback locationCallback;
+
+  @Override
+  public void startUpdates(@NonNull Context context, @NonNull Callback callback) {
+    client = LocationServices.getFusedLocationProviderClient(context);
+
+    LocationRequest request =
+        new LocationRequest.Builder(Priority.PRIORITY_HIGH_ACCURACY, UPDATE_INTERVAL_MS)
+            .setMinUpdateIntervalMillis(FASTEST_INTERVAL_MS)
+            .setMinUpdateDistanceMeters(0)
+            .setWaitForAccurateLocation(false)
+            .build();
+
+    locationCallback =
+        new LocationCallback() {
+          @Override
+          public void onLocationResult(@NonNull LocationResult result) {
+            Location loc = result.getLastLocation();
+            if (loc != null) {
+              callback.onLocationUpdate(loc);
+            }
+          }
+        };
+
+    try {
+      client.requestLocationUpdates(request, locationCallback, Looper.getMainLooper());
+    } catch (SecurityException e) {
+      Log.e(TAG, "Missing location permission", e);
+    }
+  }
+
+  @Override
+  public void stopUpdates() {
+    if (client != null && locationCallback != null) {
+      client.removeLocationUpdates(locationCallback);
+      client = null;
+      locationCallback = null;
+    }
+  }
+}

src/gplay/java/org/thoughtcrime/securesms/geolocation/LocationSourceFactory.java

@@ -0,0 +1,35 @@
+package org.thoughtcrime.securesms.geolocation;
+
+import android.content.Context;
+import android.util.Log;
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GoogleApiAvailability;
+
+/**
+ * Prefers FusedLocationProviderClient, falls back to platform LocationManager if Play Services are
+ * somehow unavailable.
+ */
+public final class LocationSourceFactory {
+
+  private static final String TAG = "LocationSourceFactory";
+
+  private LocationSourceFactory() {}
+
+  public static LocationSource create(Context context) {
+    if (isGmsAvailable(context)) {
+      Log.i(TAG, "Using FusedLocationProviderClient");
+      return new GmsLocationSource();
+    }
+    Log.i(TAG, "GMS unavailable, falling back to LocationManager");
+    return new PlatformLocationSource();
+  }
+
+  private static boolean isGmsAvailable(Context context) {
+    try {
+      return GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(context)
+          == ConnectionResult.SUCCESS;
+    } catch (Exception e) {
+      return false;
+    }
+  }
+}

src/gplay/java/org/thoughtcrime/securesms/notifications/FcmReceiveService.java

@@ -17,7 +17,7 @@ import org.thoughtcrime.securesms.service.FetchForegroundService;
 import org.thoughtcrime.securesms.util.Util;
 
 public class FcmReceiveService extends FirebaseMessagingService {
-  private static final String TAG = FcmReceiveService.class.getSimpleName();
+  private static final String TAG = "FcmReceiveService";
   private static final Object INIT_LOCK = new Object();
   private static boolean initialized;
   private static volatile boolean triedRegistering;

src/main/AndroidManifest.xml

@@ -71,6 +71,8 @@
         android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CAMERA" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_PHONE_CALL" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_LOCATION" />
     <uses-permission android:name="android.permission.MANAGE_OWN_CALLS" />
 
     <!-- force compiling libs on older sdk than supported; runtime checks are required -->
@@ -81,7 +83,6 @@
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
-        tools:replace="android:allowBackup"
         android:allowBackup="false"
         android:theme="@style/TextSecure.LightTheme"
         android:largeHeap="true"
@@ -464,10 +465,6 @@
             android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize">
         </activity>
 
-        <service
-            android:name=".geolocation.LocationBackgroundService"
-            android:foregroundServiceType="location" />
-
         <service
             android:name=".service.GenericForegroundService"
             android:foregroundServiceType="dataSync" />
@@ -476,6 +473,11 @@
             android:name=".service.FetchForegroundService"
             android:foregroundServiceType="dataSync" />
 
+        <service
+            android:name=".geolocation.LocationStreamingService"
+            android:foregroundServiceType="location"
+            android:exported="false" />
+
         <service
             android:name=".service.AudioPlaybackService"
             android:foregroundServiceType="mediaPlayback"
@@ -489,7 +491,7 @@
             android:name=".calls.CallService"
             android:enabled="true"
             android:exported="false"
-            android:foregroundServiceType="camera|microphone" />
+            android:foregroundServiceType="camera|microphone|phoneCall" />
 
         <receiver
             android:name=".notifications.MarkReadReceiver"

src/main/assets/help/cs/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -628,6 +643,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1425,23 +1631,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/de/help.html

@@ -29,6 +29,21 @@
       <li><a href="#wie-viele-mitglieder-können-in-einer-einzelnen-gruppe-sein">Wie viele Mitglieder können in einer einzelnen Gruppe sein?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Kanäle</a>
+    <ul>
+      <li><a href="#einem-kanal-beitreten">Einem Kanal beitreten</a></li>
+      <li><a href="#einen-kanal-erstellen">Einen Kanal erstellen</a></li>
+      <li><a href="#wie-viele-empfänger-kann-ein-kanal-haben">Wie viele Empfänger kann ein Kanal haben?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Anrufe</a>
+    <ul>
+      <li><a href="#jemanden-anrufen">Jemanden anrufen</a></li>
+      <li><a href="#einen-anruf-annehmen-oder-ablehnen">Einen Anruf annehmen oder ablehnen</a></li>
+      <li><a href="#während-des-anrufs">Während des Anrufs</a></li>
+      <li><a href="#verpasste-anrufe-und-benachrichtigungen">Verpasste Anrufe und Benachrichtigungen</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-Chat-Apps</a>
     <ul>
       <li><a href="#wo-bekomme-ich-in-chat-apps">Wo bekomme ich In-Chat-Apps?</a></li>
@@ -584,6 +599,197 @@ aber mehr als 150 sind nicht empfohlen.</p>
 
 <p>Wenn Gruppen größer werden, können sie sozial instabil werden und benötigen möglicherweise eine Hierarchie - und Delta Chat ist ein privater Messenger für Chats mit <a href="#groups">gleichen Rechten</a>. Vgl. <a href="https://de.wikipedia.org/wiki/Dunbar-Zahl">Dunbar-Zahl</a>.</p>
     
+      <h2 id="channels">
+        
+        
+          Kanäle <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Kanäle dienen der Verbreitung von Nachrichten an viele Empfänger.</p>
+    
+      <h3 id="einem-kanal-beitreten">
+        
+        
+          Einem Kanal beitreten <a href="#einem-kanal-beitreten" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="einen-kanal-erstellen">
+        
+        
+          Einen Kanal erstellen <a href="#einen-kanal-erstellen" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="wie-viele-empfänger-kann-ein-kanal-haben">
+        
+        
+          Wie viele Empfänger kann ein Kanal haben? <a href="#wie-viele-empfänger-kann-ein-kanal-haben" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Anrufe <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="jemanden-anrufen">
+        
+        
+          Jemanden anrufen <a href="#jemanden-anrufen" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="einen-anruf-annehmen-oder-ablehnen">
+        
+        
+          Einen Anruf annehmen oder ablehnen <a href="#einen-anruf-annehmen-oder-ablehnen" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="während-des-anrufs">
+        
+        
+          Während des Anrufs <a href="#während-des-anrufs" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="verpasste-anrufe-und-benachrichtigungen">
+        
+        
+          Verpasste Anrufe und Benachrichtigungen <a href="#verpasste-anrufe-und-benachrichtigungen" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1329,23 +1535,16 @@ im Falle einer Beschlagnahmung des Geräts nicht ohne Weiteres identifiziert wer
         
       </h3>
 
-<p>Das verwendete <a href="#relays">Relay</a> muss Ihre IP-Adresse kennen,
-sowie manchmal auch die Geräte Ihrer Kontakte, wenn Sie einen <a href="#experiments">Anruf</a> tätigen
-oder gemeinsam <a href="#webxdc">Apps</a> verwenden.</p>
+<p>Die verwendeten <a href="#relays">Relays</a> müssen deine IP-Adresse kennen,
+sowie manchmal auch die Geräte deiner Kontakte, wenn du einen <a href="#calls">Anruf</a> tätigst
+oder ihr gemeinsam <a href="#webxdc">Apps</a> verwendet.</p>
 
 <p>IP-Adressen sind für Verbindungen und für Effizienz erforderlich.
-Sie werden weder gespeichert noch offengelegt.
-Beachten Sie, dass die IP-Adresse
-nicht mit einer Adresse, die Sie einem Lieferdienst geben,  vergleichbar ist - 
-sondern viel gröber ist und oft nur die Region oder das Land angibt.</p>
+Sie werden von Delta Chat weder gespeichert noch offengelegt.
+IP-Adressen sind nicht mit einer Adresse, die du einem Lieferdienst gibst, vergleichbar - sondern viel gröber und oft nur die Stadt oder die Region beschreibend.</p>
 
-<p>Da dies die Standardfunktion des Internets und anderer Messenger ist,
-bieten wir hier keine Optionen an und stellen auch keine Fragen im Voraus.</p>
-
-<p>Wenn Sie Ihre IP-Adresse als Sicherheits- oder Datenschutzrisiko betrachten,
-empfehlen wir Ihnen, ein VPN in Kombination mit dem System-Lockdown-Modus zu verwenden.
-Alle einzelnen Apps auf Ihrem System nach IP-Optionen abzusuchen wird nicht zufriedenstellen sein;
-beispielsweise legt das Antippen eines Links IP-Adressen gegenüber unbekannten Parteien offen und stellt hier das weitaus größere Risiko dar.</p>
+<p>Wenn du deine IP-Adresse als Risiko betrachtest, empfehlen wir, ein VPN für das gesamte System zu verwenden.
+Einstellungen auf App-Ebene hinterlassen Lücken überall im  System. Wenn man beispielsweise auf einen Link tippt, können IP-Adressen an Unbekannte weitergegeben werden, was bei weitem das größere Risiko darstellt</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/en/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -627,6 +642,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1425,23 +1631,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/es/help.html

@@ -2,38 +2,53 @@
 <html lang="es"><head><meta charset="UTF-8" /><meta name="viewport" content="initial-scale=1.0" /><link rel="stylesheet" href="../help.css" /></head><body><ul id="top">
   <li><a href="#qué-es-delta-chat">¿Qué es Delta Chat?</a>
     <ul>
-      <li><a href="#howtoe2ee">How can I find people to chat with?</a></li>
-      <li><a href="#why-is-a-chat-marked-as-request">Why is a chat marked as “Request”?</a></li>
-      <li><a href="#how-can-i-put-two-of-my-friends-in-contact-with-each-other">How can I put two of my friends in contact with each other?</a></li>
+      <li><a href="#howtoe2ee">¿Cómo puedo encontrar gente para chatear?</a></li>
+      <li><a href="#por-qué-un-chat-aparece-marcado-como-solicitud">¿Por qué un chat aparece marcado como “Solicitud”?</a></li>
+      <li><a href="#cómo-puedo-poner-en-contacto-a-dos-de-mis-amigos-entre-ellos">¿Cómo puedo poner en contacto a dos de mis amigos entre ellos?</a></li>
       <li><a href="#multiple-accounts">¿Qué son los perfiles? ¿Cómo puedo cambiar entre ellos?</a></li>
       <li><a href="#quién-ve-mi-foto-de-perfil">¿Quién ve mi foto de perfil?</a></li>
-      <li><a href="#signature">Can I set a Bio/Status with Delta Chat?</a></li>
+      <li><a href="#signature">¿Puedo establecer una Bio/Estado en Delta Chat?</a></li>
       <li><a href="#qué-significa-fijar-mutear-archivar">¿Qué significa fijar, mutear, archivar?</a></li>
       <li><a href="#save">¿Cómo funcionan los “Mensajes guardados”?</a></li>
       <li><a href="#qué-significa-el-punto-verde">¿Qué significa el punto verde?</a></li>
       <li><a href="#qué-significan-las-marcas-que-se-muestran-junto-a-los-mensajes-salientes">¿Qué significan las marcas que se muestran junto a los mensajes salientes?</a></li>
       <li><a href="#edit">Corregir errores y borrar mensajes después de enviar</a></li>
-      <li><a href="#mediaquality">How is media quality handled?</a></li>
+      <li><a href="#mediaquality">¿Cómo se gestiona la calidad de los archivos multimedia?</a></li>
       <li><a href="#ephemeralmsgs">¿Cómo funciona la desaparición de mensajes?</a></li>
       <li><a href="#delold">¿Qué pasa si activo “Borrar mensajes del dispositivo”?</a></li>
-      <li><a href="#remove-account">How can I delete my chat profile?</a></li>
+      <li><a href="#remove-account">¿Cómo puedo borrar mi perfil?</a></li>
     </ul>
   </li>
-  <li><a href="#groups">Groups</a>
+  <li><a href="#groups">Grupos</a>
     <ul>
       <li><a href="#creación-de-un-grupo">Creación de un grupo</a></li>
-      <li><a href="#addmembers">Add and remove members</a></li>
+      <li><a href="#addmembers">Añadir y eliminar miembros</a></li>
       <li><a href="#me-he-eliminado-por-accidente">Me he eliminado por accidente.</a></li>
       <li><a href="#no-quiero-recibir-más-los-mensajes-de-un-grupo">No quiero recibir más los mensajes de un grupo.</a></li>
-      <li><a href="#cloning-a-group">Cloning a group</a></li>
-      <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
+      <li><a href="#clonar-un-grupo">Clonar un grupo</a></li>
+      <li><a href="#cuántos-miembros-pueden-participar-en-un-solo-grupo">¿Cuántos miembros pueden participar en un solo grupo?</a></li>
     </ul>
   </li>
-  <li><a href="#webxdc">In-chat apps</a>
+  <li><a href="#channels">Channels</a>
     <ul>
-      <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
-      <li><a href="#how-private-are-in-chat-apps">How private are in-chat apps?</a></li>
-      <li><a href="#create-xdc">How can I create my own in-chat apps?</a></li>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
+  <li><a href="#webxdc">Aplicaciones en chats</a>
+    <ul>
+      <li><a href="#dónde-puedo-conseguir-aplicaciones-para-el-chat">¿Dónde puedo conseguir aplicaciones para el chat?</a></li>
+      <li><a href="#cómo-de-privadas-son-las-aplicaciones-en-el-chat">¿Cómo de privadas son las aplicaciones en el chat?</a></li>
+      <li><a href="#create-xdc">¿Cómo puedo crear mis propias aplicaciones para el chat?</a></li>
     </ul>
   </li>
   <li><a href="#instant-delivery">Entrega de mensajes instantáneos y notificaciones Push</a>
@@ -57,7 +72,7 @@
     <ul>
       <li><a href="#experiments">Experimental Features</a></li>
       <li><a href="#relays">What are Relays?</a></li>
-      <li><a href="#can-i-use-a-classic-email-address-with-delta-chat">Can I use a classic email address with Delta Chat?</a></li>
+      <li><a href="#puedo-utilizar-una-dirección-de-email-clásico-con-delta-chat">¿Puedo utilizar una dirección de email clásico con Delta Chat?</a></li>
       <li><a href="#classic-email">How can I configure a chat profile with a classic email address as relay?</a></li>
       <li><a href="#i-want-to-manage-my-own-server-for-delta-chat-what-do-you-recommend">I want to manage my own server for Delta Chat. What do you recommend?</a></li>
       <li><a href="#statssending">What is “Send statistics to Delta Chat’s developers”?</a></li>
@@ -67,8 +82,8 @@
   <li><a href="#e2ee">Cifrado y seguridad</a>
     <ul>
       <li><a href="#qué-estándares-se-utilizan-para-el-cifrado-de-extremo-a-extremo">¿Qué estándares se utilizan para el cifrado de extremo a extremo?</a></li>
-      <li><a href="#whene2e">How can I know if messages are end-to-end encrypted?</a></li>
-      <li><a href="#can-i-still-receive-or-send-messages-without-end-to-end-encryption">Can I still receive or send messages without end-to-end encryption?</a></li>
+      <li><a href="#whene2e">¿Cómo puedo saber si los mensajes están cifrados de extremo a extremo?</a></li>
+      <li><a href="#puedo-enviar-o-recibir-mensajes-sin-cifrado-de-extremo-a-extremo">¿Puedo enviar o recibir mensajes sin cifrado de extremo a extremo?</a></li>
       <li><a href="#e2eeguarantee">What does the green checkmark in a contact profile mean?</a></li>
       <li><a href="#los-adjuntos-imágenes-archivos-audio-etc-están-cifrados-de-extremo-a-extremo">¿Los adjuntos (imágenes, archivos, audio, etc.) están cifrados de extremo a extremo?</a></li>
       <li><a href="#openpgp-secure">¿Es OpenPGP seguro?</a></li>
@@ -77,11 +92,11 @@
       <li><a href="#tls">Are messages marked with the mail icon exposed on the Internet?</a></li>
       <li><a href="#message-metadata">¿Cómo Delta Chat protege los metadatos en los mensajes?</a></li>
       <li><a href="#device-seizure">¿Cómo proteger los metadatos y los contactos cuando se incauta un dispositivo?</a></li>
-      <li><a href="#who-sees-my-ip-address">Who sees my IP Address?</a></li>
-      <li><a href="#sealedsender">Does Delta Chat support “Sealed Sender”?</a></li>
+      <li><a href="#quién-puede-ver-mi-dirección-ip">¿Quién puede ver mi dirección IP?</a></li>
+      <li><a href="#sealedsender">¿Soporta Delta Chat “Sealed Sender”?</a></li>
       <li><a href="#pfs">¿Soporta Delta Chat Perfect Forward Secrecy?</a></li>
-      <li><a href="#pqc">Does Delta Chat support Post-Quantum-Cryptography?</a></li>
-      <li><a href="#how-can-i-manually-check-encryption-information">How can I manually check encryption information?</a></li>
+      <li><a href="#pqc">¿Soporta Delta Chat criptografía postcuántica?</a></li>
+      <li><a href="#cómo-puedo-comprobar-manualmente-la-información-de-cifrado">¿Cómo puedo comprobar manualmente la información de cifrado?</a></li>
       <li><a href="#importkey">¿Puedo reutilizar mi clave privada existente?</a></li>
       <li><a href="#security-audits">¿Se auditó Delta Chat de forma independiente en busca de vulnerabilidades de seguridad?</a></li>
     </ul>
@@ -89,7 +104,7 @@
   <li><a href="#miscelaneo">Miscelaneo</a>
     <ul>
       <li><a href="#qué-permisos-necesita-delta-chat">¿Qué permisos necesita Delta Chat?</a></li>
-      <li><a href="#where-can-my-friends-find-delta-chat">Where can my friends find Delta Chat?</a></li>
+      <li><a href="#dónde-pueden-encontrar-mis-amigos-delta-chat">¿Dónde pueden encontrar mis amigos Delta Chat?</a></li>
       <li><a href="#cómo-se-financia-el-desarrollo-de-delta-chat">¿Cómo se financia el desarrollo de Delta Chat?</a></li>
     </ul>
   </li>
@@ -109,85 +124,85 @@
 
 <ul>
   <li>
-    <p>Instant creation of <strong>private chat profiles</strong>
-with secure and interoperable <a href="https://chatmail.at/relays">chatmail relays</a>
-that offer instant message delivery, and Push Notifications for iOS and Android devices.</p>
+    <p>Creación instantánea de <strong>perfiles de chat privados</strong>
+con <a href="https://chatmail.at/relays">servidores de chatmail</a> seguros e interoperables
+que ofrecen un envío instantáneo de mensajes y Notificaciones Push en dispositivos Android e iOS.</p>
   </li>
   <li>
-    <p>Pervasive <a href="#multiple-accounts">multi-profile</a> and
-<a href="#multiclient">multi-device</a> support on all platforms
-and between different <a href="https://chatmail.at/clients">chatmail apps</a>.</p>
+    <p>Soporte generalizado <a href="#multiple-accounts">multiperfil</a> y
+soporte <a href="#multiclient">multidispositivo</a> en todas las plataformas
+y entre diferentes <a href="https://chatmail.at/clients">aplicaciones de chatmail</a>.</p>
   </li>
   <li>
-    <p>Interactive <a href="#webxdc">in-chat apps</a> for gaming and collaboration</p>
+    <p>Aplicaciones interactivas <a href="#webxdc">en el chat</a> para juegos y colaboración</p>
   </li>
   <li>
-    <p><a href="#security-audits">Audited end-to-end encryption</a>
-safe against network and server attacks.</p>
+    <p><a href="#security-audits">Cifrado de extremo a extremo auditado</a>
+seguro contra ataques a la red y al servidor.</p>
   </li>
   <li>
-    <p>Free and Open Source software, both app and server side,
-built on <a href="https://github.com/chatmail/core/blob/main/standards.md#standards-used-in-delta-chat">Internet Standards</a>.</p>
+    <p>Software gratuito y de código abierto, tanto las aplicaciones como los servidores,
+construido sobre <a href="https://github.com/chatmail/core/blob/main/standards.md#standards-used-in-delta-chat">estándares de internet</a>.</p>
   </li>
 </ul>
     
       <h3 id="howtoe2ee">
         
         
-          How can I find people to chat with? <a href="#howtoe2ee" class="anchor"></a>
+          ¿Cómo puedo encontrar gente para chatear? <a href="#howtoe2ee" class="anchor"></a>
         
         
       </h3>
 
-<p>First, note that Delta Chat is a private messenger.
-There is no public discovery, <em>you</em> decide about your contacts.</p>
+<p>En primer lugar, ten en cuenta que Delta Chat es un sistema de mensajería privado.
+No hay descubrimiento público, <em>tú</em> decides sobre tus contactos.</p>
 
 <ul>
   <li>
-    <p>If you are <strong>face to face</strong> with your friend or family,
-tap the <strong>QR Code</strong> icon <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" />
-on the main screen.<br />
-Ask your chat partner to <strong>scan</strong> the QR image
-with their Delta Chat app.</p>
+    <p>Si estas <strong>cara a cara</strong> con tus amigos o familia,
+pulsa el icono del <strong>Código QR</strong> <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" />
+en la pantalla principal.
+Pídele a la otra persona que <strong>escanee</strong> el código QR
+con su aplicación de Delta Chat.</p>
   </li>
   <li>
-    <p>For a <strong>remote</strong> contact setup,
-from the same screen,
-click “Copy” or “Share” and send the <strong>invite link</strong>
-through another private chat.</p>
+    <p>Para configurar un contacto <strong>a distancia</strong>,
+desde la misma pantalla,
+haga clic en “Copiar” o “Compartir” y envíe el <strong>enlace de invitación</strong>
+a través de otro chat privado.</p>
   </li>
 </ul>
 
-<p>Now wait while connection gets established.</p>
+<p>Espera mientras la conexión se establece.</p>
 
 <ul>
   <li>
-    <p>If both sides are online, they will soon see a chat
-and can start messaging securely.</p>
+    <p>Si ambas partes están en línea, pronto verán un chat
+y podrán empezar a mensajearse de forma segura.</p>
   </li>
   <li>
-    <p>If one side is offline or in bad network,
-the ability to chat is delayed until connectivity is restored.</p>
+    <p>Si una de las partes no está conectada o tiene una mala conexión,
+la capacidad de chatear se retrasará hasta que la conectividad se haya restaurado.</p>
   </li>
 </ul>
 
-<p>Congratulations!
-You now will automatically use <a href="#e2ee">end-to-end encryption</a> with this contact.
-If you add each other to <a href="#groups">groups</a>, end-to-end encryption will be established among all members.</p>
+<p>¡Enhorabuena!
+Ahora estás utilizando automáticamente el <a href="#e2ee">cifrado de extremo a extremo</a> con este contacto.
+Si os añadís mutuamente a <a href="#groups">grupos</a>, el cifrado de extremo a extremo se establecerá entre todos los miembros.</p>
     
-      <h3 id="why-is-a-chat-marked-as-request">
+      <h3 id="por-qué-un-chat-aparece-marcado-como-solicitud">
         
         
-          Why is a chat marked as “Request”? <a href="#why-is-a-chat-marked-as-request" class="anchor"></a>
+          ¿Por qué un chat aparece marcado como “Solicitud”? <a href="#por-qué-un-chat-aparece-marcado-como-solicitud" class="anchor"></a>
         
         
       </h3>
 
-<p>As being a private messenger,
-only friends and family you <a href="#howtoe2ee">share your QR code or invite link with</a> can write to you.</p>
+<p>Al ser un sistema de mensajería privada
+solo los amigos y familiares con los que <a href="#howtoe2ee">compartas tu código QR o enlace de invitación</a> pueden escribirte.</p>
 
-<p>Your friends may share your contact with other friends,
-this appears as <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Request</b></p>
+<p>Tus amigos pueden compartir tu contacto con otros amigos,
+esto aparecerá como <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Solicitud</b></p>
 
 <ul>
   <li>
@@ -201,10 +216,10 @@ this appears as <b style="border: 1px solid currentColor; padding: 0 3px; font-s
   </li>
 </ul>
     
-      <h3 id="how-can-i-put-two-of-my-friends-in-contact-with-each-other">
+      <h3 id="cómo-puedo-poner-en-contacto-a-dos-de-mis-amigos-entre-ellos">
         
         
-          How can I put two of my friends in contact with each other? <a href="#how-can-i-put-two-of-my-friends-in-contact-with-each-other" class="anchor"></a>
+          ¿Cómo puedo poner en contacto a dos de mis amigos entre ellos? <a href="#cómo-puedo-poner-en-contacto-a-dos-de-mis-amigos-entre-ellos" class="anchor"></a>
         
         
       </h3>
@@ -223,16 +238,16 @@ and can tap it to start chatting with the first contact.</p>
         
       </h3>
 
-<p>A profile is <strong>a name, a picture</strong> and some additional information for encrypting messages.
-A profile lives on your device(s) only
-and uses the server only to relay messages.</p>
+<p>Un perfil es <strong>un nombre,  una foto</strong> y alguna información adicional para cifrar los mensajes.
+Un perfil se almacena únicamente en tu dispositivo (o dispositivos)
+y solo utiliza el servidor para enviar los mensajes.</p>
 
 <p>En la primera instalación de Delta Chat se crea un primer perfil.</p>
 
 <p>Después, puedes tocar la imagen de tu perfil en la esquina superior izquierda para <strong>Añadir perfiles</strong>
 o para <strong>Cambiar perfiles</strong>.</p>
 
-<p>You may want to use separate profiles for political, family or work related activities.</p>
+<p>Puede utilizar perfiles diferentes para actividades políticas, familiares o laborales.</p>
 
 <p>Quizás quieres aprender <a href="#multiclient">cómo se usa el mismo perfil en múltiples dispositivos</a>.</p>
     
@@ -252,15 +267,15 @@ o los agrega a través de un código QR, ellos lo verán automáticamente como s
       <h3 id="signature">
         
         
-          Can I set a Bio/Status with Delta Chat? <a href="#signature" class="anchor"></a>
+          ¿Puedo establecer una Bio/Estado en Delta Chat? <a href="#signature" class="anchor"></a>
         
         
       </h3>
 
-<p>Yes,
-you can do so under <strong>Settings → Profile → Bio</strong>.
-Once you sent a message to a contact,
-they will see it when they view your contact details.</p>
+<p>Sí,
+es posible hacerlo en <strong>Ajustes  → Perfil → Texto de firma</strong>.
+Una vez que hayas enviado un mensaje a un contacto,
+este lo verá cuando consulte tus datos de contacto.</p>
     
       <h3 id="qué-significa-fijar-mutear-archivar">
         
@@ -280,7 +295,7 @@ they will see it when they view your contact details.</p>
     <p><strong>Chats muteados</strong> si no quieres recibir notificaciones de ellos. Chats muteados se mantienen en su lugar e inclusive puedes fijarlos.</p>
   </li>
   <li>
-    <p><strong>Archivar chats</strong> si no deseas verlos en tu lista de chats. Los chats archivados siguen siendo accesibles arriba de la lista de chats o a través de la búsqueda.</p>
+    <p><strong>Archivar chats</strong> si no deseas verlos en tu lista de chats. Los chats archivados siguen siendo accesibles arriba de la lista de chats o a través de la búsqueda y aparecen marcados como <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Archivado</b>.</p>
   </li>
   <li>
     <p>Cuando un chat archivado recibe un nuevo mensaje, a menos que esté silenciado, <strong>saldrá del archivo</strong> y volverá a aparecer en tu lista de chats.
@@ -352,16 +367,16 @@ and others will as well not always see that you are “online”.</p>
 
 <ul>
   <li>
-    <p><strong>One tick</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick1.png" alt="" />
-means that the message was sent successfully to the <a href="#relays">relay</a>.</p>
+    <p><strong>Un tick</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick1.png" alt="" />
+significa que el mensaje se ha enviado correctamente al <a href="#relays">servidor</a>.</p>
   </li>
   <li>
-    <p><strong>Two ticks</strong>  <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick2.png" alt="" />
-indicate your contact has read the message.</p>
+    <p><strong>Dos ticks</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick2.png" alt="" />
+indican que tu contacto ha leído el mensaje.</p>
   </li>
 </ul>
 
-<p>In <a href="#groups">groups</a> the second tick means that at least one member has reported back having read the message.</p>
+<p>En los <a href="#groups">grupos</a> el segundo tick indica que, al menos, uno de los miembros ha leído el mensaje.</p>
 
 <p>You will only get the second tick if both you and one of the recipients who read the message
 has <strong>Settings → Chats → Read Receipts</strong> enabled.</p>
@@ -396,13 +411,12 @@ who could have already replied, forwarded, saved, screenshotted or otherwise cop
       <h3 id="mediaquality">
         
         
-          How is media quality handled? <a href="#mediaquality" class="anchor"></a>
+          ¿Cómo se gestiona la calidad de los archivos multimedia? <a href="#mediaquality" class="anchor"></a>
         
         
       </h3>
 
-<p>Images, videos, files, voice messages etc. can be sent using the <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attach-</strong>
-or <img style="vertical-align:middle; width:0.8em; margin:1px" src="../mic.png" alt="Microphone" /> <strong>Voice Message</strong> buttons.</p>
+<p>Imágenes, vídeos, archivos, mensajes de voz, etc., pueden enviarse utilizando los botones de <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Adjuntar</strong> o <img style="vertical-align:middle; width:0.8em; margin:1px" src="../mic.png" alt="Microphone" /> <strong>Mensaje de Voz</strong>.</p>
 
 <ul>
   <li>
@@ -460,8 +474,8 @@ the (anyway encrypted) messages may take longer to get deleted from their server
         
       </h3>
 
-<p>If you want to save storage on your device, you can choose to delete old
-messages automatically.</p>
+<p>Si quieres ahorrar espacio en tu dispositivo, puedes elegir borrar los mensajes antiguos
+automáticamente.</p>
 
 <p>To turn it on, go to <strong>Settings → Chats → Delete Message from Device</strong>.
 You can set a timeframe between “after an hour” and “after a year”;
@@ -471,7 +485,7 @@ older than that.</p>
       <h3 id="remove-account">
         
         
-          How can I delete my chat profile? <a href="#remove-account" class="anchor"></a>
+          ¿Cómo puedo borrar mi perfil? <a href="#remove-account" class="anchor"></a>
         
         
       </h3>
@@ -490,12 +504,12 @@ or the respective page from your chosen <a href="https://chatmail.at/relays">3rd
       <h2 id="groups">
         
         
-          Groups <a href="#groups" class="anchor"></a>
+          Grupos <a href="#groups" class="anchor"></a>
         
         
       </h2>
 
-<p>Groups let several people chat together privately with <strong>equal rights</strong>.</p>
+<p>Los grupos permiten a varias personas chatear juntas en privado con <strong>igualdad de derechos</strong>.</p>
 
 <p>Anyone can
 change the group name or avatar,
@@ -503,7 +517,7 @@ change the group name or avatar,
 set <a href="#ephemeralmsgs">disappearing messages</a>,
 and <a href="#edit">delete their own messages</a> from all member’s devices.</p>
 
-<p>Because all members have the same rights, groups work best among <strong>trusted friends and family</strong>.</p>
+<p>Como todos los miembros tienen los mismos derechos, los grupos funcionan mejor entre <strong>amigos de confianza y familiares</strong>.</p>
     
       <h3 id="creación-de-un-grupo">
         
@@ -528,17 +542,17 @@ and <a href="#edit">delete their own messages</a> from all member’s devices.</
       <h3 id="addmembers">
         
         
-          Add and remove members <a href="#addmembers" class="anchor"></a>
+          Añadir y eliminar miembros <a href="#addmembers" class="anchor"></a>
         
         
       </h3>
 
-<p>All group members have the <strong>same rights</strong>.
-For this reason, everyone can delete any member or add new ones.</p>
+<p>Todos los miembros del grupo tienen los <strong>mismos derechos</strong>.
+Por esta razón, todos pueden eliminar a cualquier miembro o añadir otros nuevos.</p>
 
 <ul>
   <li>
-    <p>To <strong>add or delete members</strong>, tap the group name in the chat and select the member to add or remove.</p>
+    <p>Para <strong>añadir o eliminar miembros</strong>, pulsa el nombre del grupo en el chat y selecciona el miembro a añadir o eliminar.</p>
   </li>
   <li>
     <p>If the member is not yet in your contact list, but <strong>face to face</strong> with you,
@@ -583,84 +597,275 @@ Si desea unirse al grupo nuevamente más tarde, pídale a otro miembro del grupo
 <p>Como alternativa, también puede “silenciar” a un grupo, lo que significa que recibirá todos los mensajes y
 aún puede escribir, pero ya no se le notifican nuevos mensajes.</p>
     
-      <h3 id="cloning-a-group">
+      <h3 id="clonar-un-grupo">
         
         
-          Cloning a group <a href="#cloning-a-group" class="anchor"></a>
+          Clonar un grupo <a href="#clonar-un-grupo" class="anchor"></a>
         
         
       </h3>
 
-<p>You can duplicate a group to start a separate discussion
-or to exclude members without them noticing.</p>
+<p>Puedes duplicar un grupo para empezar una discusión separada
+o para excluir a miembros sin notificárselo.</p>
 
 <ul>
   <li>
-    <p>Open the group profile and tap <strong>Clone Chat</strong> (Android/iOS),
-or right-click the group in the chat list (Desktop).</p>
+    <p>Abre el perfil del grupo y pulsa <strong>Clonar Chat</strong> (Android/iOS),
+o haz clic derecho en el grupo en la lista de chats (Escritorio).</p>
   </li>
   <li>
-    <p>Set a new name, choose an avatar, and adjust the member list if needed.</p>
+    <p>Establece un nuevo nombre, elige un avatar y ajusta la lista de miembros si es necesario.</p>
   </li>
 </ul>
 
-<p>The new group is <strong>fully independent</strong> from the original,
-which continues to work as before.</p>
+<p>El nuevo grupo es <strong>completamente independiente</strong> del original,
+que continúa funcionando como antes.</p>
     
-      <h3 id="how-many-members-can-participate-in-a-single-group">
+      <h3 id="cuántos-miembros-pueden-participar-en-un-solo-grupo">
         
         
-          How many members can participate in a single group? <a href="#how-many-members-can-participate-in-a-single-group" class="anchor"></a>
+          ¿Cuántos miembros pueden participar en un solo grupo? <a href="#cuántos-miembros-pueden-participar-en-un-solo-grupo" class="anchor"></a>
         
         
       </h3>
 
-<p>There is no strict technical limit,
-but more than 150 is not recommended.</p>
+<p>No hay una limitación técnica,
+pero no se recomiendan más de 150.</p>
 
 <p>As groups get larger, they can become socially unstable and may need a hierarchy -
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
-      <h2 id="webxdc">
+      <h2 id="channels">
         
         
-          In-chat apps <a href="#webxdc" class="anchor"></a>
+          Channels <a href="#channels" class="anchor"></a>
         
         
       </h2>
 
-<p>You can send apps to a chat - games, editors, polls and other tools.
-This makes Delta Chat a truly extensible messenger.</p>
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
     
-      <h3 id="where-can-i-get-in-chat-apps">
+      <h3 id="subscribe-to-a-channel">
         
         
-          Where can I get in-chat apps? <a href="#where-can-i-get-in-chat-apps" class="anchor"></a>
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
         
         
       </h3>
 
 <ul>
   <li>
-    <p>In a chat, using <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attachment Button → Apps</strong></p>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
   </li>
   <li>
-    <p>You can also <a href="#create-xdc">create your own app</a> and attach it using <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attachment Button → File</strong></p>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
   </li>
 </ul>
     
-      <h3 id="how-private-are-in-chat-apps">
+      <h3 id="accept-or-reject-a-call">
         
         
-          How private are in-chat apps? <a href="#how-private-are-in-chat-apps" class="anchor"></a>
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
         
         
       </h3>
 
 <ul>
   <li>
-    <p>In-chat apps can not send data to the Internet, or download anything.</p>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
+      <h2 id="webxdc">
+        
+        
+          Aplicaciones en chats <a href="#webxdc" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Puedes enviar aplicaciones a un chat: juegos, editores, encuestas y otras herramientas.
+Esto convierte a Delta Chat en una aplicación de mensajería realmente ampliable.</p>
+    
+      <h3 id="dónde-puedo-conseguir-aplicaciones-para-el-chat">
+        
+        
+          ¿Dónde puedo conseguir aplicaciones para el chat? <a href="#dónde-puedo-conseguir-aplicaciones-para-el-chat" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>En un chat, utilizando <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Botón Adjuntar → Aplicaciones</strong>.</p>
+  </li>
+  <li>
+    <p>También puedes <a href="#create-xdc">crear tu propia aplicación</a> y adjuntarla utilizando <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Botón Adjuntar → Archivo</strong></p>
+  </li>
+</ul>
+    
+      <h3 id="cómo-de-privadas-son-las-aplicaciones-en-el-chat">
+        
+        
+          ¿Cómo de privadas son las aplicaciones en el chat? <a href="#cómo-de-privadas-son-las-aplicaciones-en-el-chat" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Las aplicaciones en el chat no pueden enviar datos a Internet ni descargar nada.</p>
   </li>
   <li>
     <p>An in-chat app can only exchange data within a chat, with its
@@ -672,29 +877,28 @@ isolated from the Internet.</p>
 trust the people you chat with, you can trust the in-chat app as well.</p>
   </li>
   <li>
-    <p>This also means: Just like for web links, do not open apps from untrusted contacts.</p>
+    <p>Esto también significa que, al igual que con los enlaces web, no debes abrir aplicaciones de contactos en los que no confíes.</p>
   </li>
 </ul>
     
       <h3 id="create-xdc">
         
         
-          How can I create my own in-chat apps? <a href="#create-xdc" class="anchor"></a>
+          ¿Cómo puedo crear mis propias aplicaciones para el chat? <a href="#create-xdc" class="anchor"></a>
         
         
       </h3>
 
 <ul>
   <li>
-    <p>In-chat apps are zip files with <code class="language-plaintext highlighter-rouge">.xdc</code> extension containing html, css, and javascript code.</p>
+    <p>Las aplicaciones de chat son archivos zip con extensión <code class="language-plaintext highlighter-rouge">.xdc</code> que contienen código html, css y javascript.</p>
   </li>
   <li>
-    <p>You can extend the <a href="https://github.com/webxdc/hello">Hello World example app</a>
-to get started.</p>
+    <p>Para empezar, puedes ampliar la <a href="https://github.com/webxdc/hello">aplicación de ejemplo Hola, Mundo</a></p>
   </li>
   <li>
-    <p>All else you need to know is written in the
-<a href="https://webxdc.org/docs">Webxdc documentation</a>.</p>
+    <p>Todo lo que necesitas saber lo puedes encontrar en
+la <a href="https://webxdc.org/docs">documentación de Webxdc</a></p>
   </li>
   <li>
     <p>If you have question, you can ask others with experience
@@ -871,21 +1075,21 @@ Welcome to the power of the interoperable chatmail relay network :)</p>
         
       </h3>
 
-<p>Yes. You can use the same profile on different devices:</p>
+<p>Sí. Puedes utilizar el mismo perfil en diferentes dispositivos.</p>
 
 <ul>
   <li>
     <p>Asegurate que ambos dispositivos estén en la misma Wi-Fi o red</p>
   </li>
   <li>
-    <p>On the first device, go to <strong>Settings → Add Second Device</strong>, unlock the screen if needed
-and wait a moment until a QR code is shown</p>
+    <p>En el primer dispositivo, ve a <strong>Ajustes → Añadir segundo dispositivo</strong>, desbloquea la pantalla si es necesario,
+y espera un momento hasta que aparezca un código QR</p>
   </li>
   <li>
     <p>En el otro dispositivo, <a href="https://get.delta.chat">instala Delta Chat</a></p>
   </li>
   <li>
-    <p>On the second device, start Delta Chat, select <strong>Add as Second Device</strong>, and scan the QR code from the old device</p>
+    <p>En el segundo dispositivo, abre Delta Chat, selecciona **Añadir desde otro dispositivo” y escanea el código QR del primer dispositivo</p>
   </li>
   <li>
     <p>La transferencia debería comenzar después de unos segundos y durante la transferencia ambos dispositivos mostrarán el <strong>progreso</strong>.
@@ -946,8 +1150,8 @@ Do not exit Delta Chat.
 You can use multiple profiles per device, just <a href="#multiple-accounts">add another profile</a></p>
   </li>
   <li>
-    <p>If you still have problems or if you <strong>cannot scan a QR code</strong>
-try the <strong>manual transfer</strong> described below</p>
+    <p>Si todavía tienes problemas o si <strong>no puedes escanear el código QR</strong>
+utiliza la <strong>transferencia manual</strong> descrita debajo</p>
   </li>
 </ul>
     
@@ -1048,7 +1252,7 @@ If you have multiple relays, you will receive messages on all of them.
 Contacts learn your current relays automatically when you message them.</p>
   </li>
   <li>
-    <p>Tap on a relay to set it as <strong>used for sending</strong>.</p>
+    <p>Pulsa en un retransmisor para establecerlo como <strong>usado para enviar</strong>.</p>
   </li>
   <li>
     <p>If you <strong>remove</strong> a relay,
@@ -1057,17 +1261,17 @@ To stay reachable in the meantime, choose <strong>Hide from Contacts</strong> in
 instead of removing it right away.</p>
   </li>
   <li>
-    <p>To <strong>show</strong> a hidden relay again, tap on it.</p>
+    <p>Para <strong>mostrar</strong> de nuevo un retransmisor oculto, pulsa en él.</p>
   </li>
 </ul>
 
 <p>For more details and future possibilities of relays,
 you can follow discussions in the <a href="https://support.delta.chat">Forum</a>.</p>
     
-      <h3 id="can-i-use-a-classic-email-address-with-delta-chat">
+      <h3 id="puedo-utilizar-una-dirección-de-email-clásico-con-delta-chat">
         
         
-          Can I use a classic email address with Delta Chat? <a href="#can-i-use-a-classic-email-address-with-delta-chat" class="anchor"></a>
+          ¿Puedo utilizar una dirección de email clásico con Delta Chat? <a href="#puedo-utilizar-una-dirección-de-email-clásico-con-delta-chat" class="anchor"></a>
         
         
       </h3>
@@ -1141,27 +1345,27 @@ that power <a href="https://chatmail.at/clients">chatmail clients</a> of which D
 which is why Delta Chat for Android asks whether you want
 to send anonymous usage statistics.</p>
 
-<p>You can turn it on and off at
-<strong>Settings → Advanced → Send statistics to Delta Chat’s developers</strong>.</p>
+<p>Puedes activarlo y desactivarlo en
+<strong>Ajustes → Avanzado → Enviar estadísticas a los desarrolladores de Delta Chat</strong>.</p>
 
-<p>When you turn it on,
-weekly statistics will be automatically sent to a bot.</p>
+<p>Cuando lo activas,
+las estadísticas semanales se envían automáticamente a un bot.</p>
 
-<p>We are interested e.g. in statistics like:</p>
+<p>Estamos interesados en estadísticas como, p. ej.:</p>
 
 <ul>
   <li>
     <p>How many contacts are introduced by personally scanning a QR code?</p>
   </li>
   <li>
-    <p>Which versions of Delta Chat are being used?</p>
+    <p>¿Qué versiones de Delta Chat están siendo utilizadas?</p>
   </li>
   <li>
-    <p>What errors occur for users?</p>
+    <p>¿Qué errores se producen para los usuarios?</p>
   </li>
 </ul>
 
-<p>We will <em>not</em> collect any personally identifiable information about you.</p>
+<p>Nosotros <em>no</em> recopilaremos ninguna información de carácter personal sobre ti.</p>
     
       <h3 id="estoy-interesado-en-los-detalles-técnicos-pueden-decirme-más">
         
@@ -1212,12 +1416,12 @@ enables receivers to use end-to-end encryption with the contact.</p>
   </li>
 </ul>
 
-<p>Delta Chat does not query, publish or interact with any OpenPGP key servers.</p>
+<p>Delta Chat no consulta, publica o interacciona con ningún servidor de claves OpenPGP.</p>
     
       <h3 id="whene2e">
         
         
-          How can I know if messages are end-to-end encrypted? <a href="#whene2e" class="anchor"></a>
+          ¿Cómo puedo saber si los mensajes están cifrados de extremo a extremo? <a href="#whene2e" class="anchor"></a>
         
         
       </h3>
@@ -1226,10 +1430,10 @@ enables receivers to use end-to-end encryption with the contact.</p>
 Since the Delta Chat Version 2 release series (July 2025) 
 there are no lock or similar markers on end-to-end encrypted messages, anymore.</p>
     
-      <h3 id="can-i-still-receive-or-send-messages-without-end-to-end-encryption">
+      <h3 id="puedo-enviar-o-recibir-mensajes-sin-cifrado-de-extremo-a-extremo">
         
         
-          Can I still receive or send messages without end-to-end encryption? <a href="#can-i-still-receive-or-send-messages-without-end-to-end-encryption" class="anchor"></a>
+          ¿Puedo enviar o recibir mensajes sin cifrado de extremo a extremo? <a href="#puedo-enviar-o-recibir-mensajes-sin-cifrado-de-extremo-a-extremo" class="anchor"></a>
         
         
       </h3>
@@ -1409,41 +1613,38 @@ with the knowledge that all their data, along with all metadata, will be deleted
 Moreover, if a device is seized then chat contacts using short-lived profiles
 can not be identified easily.</p>
     
-      <h3 id="who-sees-my-ip-address">
+      <h3 id="quién-puede-ver-mi-dirección-ip">
         
         
-          Who sees my IP Address? <a href="#who-sees-my-ip-address" class="anchor"></a>
+          ¿Quién puede ver mi dirección IP? <a href="#quién-puede-ver-mi-dirección-ip" class="anchor"></a>
         
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         
         
-          Does Delta Chat support “Sealed Sender”? <a href="#sealedsender" class="anchor"></a>
+          ¿Soporta Delta Chat “Sealed Sender”? <a href="#sealedsender" class="anchor"></a>
         
         
       </h3>
 
-<p>No, not yet.</p>
+<p>No, todavía no.</p>
 
 <p>The Signal messenger introduced <a href="https://signal.org/blog/sealed-sender/">“Sealed Sender” in 2018</a>
 to keep their server infrastructure ignorant of who is sending a message to a set of recipients. 
@@ -1464,7 +1665,7 @@ but an implementation has not been agreed as a priority yet.</p>
         
       </h3>
 
-<p>Not yet, but it’s coming with <a href="https://autocrypt2.org">Autocrypt v2</a>.</p>
+<p>Todavía no, pero llegará con <a href="https://autocrypt2.org">Autocrypt v2</a>.</p>
 
 <p>Delta Chat today doesn’t support Perfect Forward Secrecy (PFS).
 This means that if your private decryption key is leaked,
@@ -1482,12 +1683,12 @@ This approach is specified in the <a href="https://datatracker.ietf.org/doc/draf
       <h3 id="pqc">
         
         
-          Does Delta Chat support Post-Quantum-Cryptography? <a href="#pqc" class="anchor"></a>
+          ¿Soporta Delta Chat criptografía postcuántica? <a href="#pqc" class="anchor"></a>
         
         
       </h3>
 
-<p>Not yet, but it’s coming with <a href="https://autocrypt2.org">Autocrypt v2</a>.</p>
+<p>Todavía no, pero llegará con <a href="https://autocrypt2.org">Autocrypt v2</a>.</p>
 
 <p><a href="https://autocrypt2.org">Autocrypt v2</a>, scheduled for full implementation in 2026,
 will bring post-quantum resistant encryption to protect against quantum computer attacks.
@@ -1495,10 +1696,10 @@ Delta Chat uses the Rust OpenPGP library <a href="https://github.com/rpgp/rpgp">
 which supports the latest <a href="https://datatracker.ietf.org/doc/draft-ietf-openpgp-pqc/">IETF Post-Quantum-Cryptography OpenPGP draft</a>.
 The implementation is specified in the <a href="https://datatracker.ietf.org/doc/draft-autocrypt-openpgp-v2-cert/">Autocrypt v2 OpenPGP Certificates</a> draft.</p>
     
-      <h3 id="how-can-i-manually-check-encryption-information">
+      <h3 id="cómo-puedo-comprobar-manualmente-la-información-de-cifrado">
         
         
-          How can I manually check encryption information? <a href="#how-can-i-manually-check-encryption-information" class="anchor"></a>
+          ¿Cómo puedo comprobar manualmente la información de cifrado? <a href="#cómo-puedo-comprobar-manualmente-la-información-de-cifrado" class="anchor"></a>
         
         
       </h3>
@@ -1614,37 +1815,37 @@ You can read the <a href="https://delta.chat/assets/blog/2019-first-security-rev
         
       </h3>
 
-<p>Some features require certain permissions,
-e.g. you need to grant camera permission if you want to <a href="#howtoe2ee">scan an invite QR code</a>.</p>
+<p>Algunas características requieren ciertos permisos,
+p. ej., tienes que conceder permiso de acceso a la cámara si quieres <a href="#howtoe2ee">escanear un código QR de invitación</a>.</p>
 
-<p>See <a href="https://delta.chat/en/gdpr#24-app-permissions">Privacy Policy</a> for a detailed overview.</p>
+<p>Consulta la <a href="https://delta.chat/en/gdpr#24-app-permissions">Política de privacidad</a> para obtener información detallada.</p>
     
-      <h3 id="where-can-my-friends-find-delta-chat">
+      <h3 id="dónde-pueden-encontrar-mis-amigos-delta-chat">
         
         
-          Where can my friends find Delta Chat? <a href="#where-can-my-friends-find-delta-chat" class="anchor"></a>
+          ¿Dónde pueden encontrar mis amigos Delta Chat? <a href="#dónde-pueden-encontrar-mis-amigos-delta-chat" class="anchor"></a>
         
         
       </h3>
 
-<p>Delta Chat is available for all major and some minor platforms:</p>
+<p>Delta Chat está disponible para todas las plataformas principales y algunas secundarias:</p>
 
 <ul>
   <li>
-    <p>The <strong>official website</strong>, <a href="https://delta.chat/download">https://delta.chat/download</a> shows all options in detail</p>
+    <p>La <strong>página web oficial</strong>, <a href="https://delta.chat/download">https://delta.chat/download</a>, muestra todas las opciones en detalle.</p>
   </li>
   <li>
-    <p>If unavailable, use the <strong>mirror</strong> at <a href="https://deltachat.github.io/deltachat-pages">https://deltachat.github.io/deltachat-pages</a></p>
+    <p>Si no está disponible, utiliza el <strong>mirror</strong> en <a href="https://deltachat.github.io/deltachat-pages">https://deltachat.github.io/deltachat-pages</a></p>
   </li>
   <li>
-    <p>Open one of the following <strong>app stores and search for “Delta Chat”:</strong>
-Google Play Store, F-Droid, Huawei App Gallery, iOS and macOS App Store, Microsoft Store</p>
+    <p>Abre una de las siguientes <strong>tiendas de aplicaciones y busca “Delta Chat”:</strong>
+ Google Play Store, F-Droid, Huawei App Gallery, iOS y macOS App Store, Microsoft Store</p>
   </li>
   <li>
-    <p>Check the <strong>package manager</strong> of your Linux distributions</p>
+    <p>Comprueba el <strong>gestor de paquetes</strong> de tu distribución de Linux</p>
   </li>
   <li>
-    <p><strong>Android APKs</strong> are also available on <a href="https://github.com/deltachat/deltachat-android/releases">https://github.com/deltachat/deltachat-android/releases</a></p>
+    <p>Las <strong>Android APKs</strong> están también disponibles en <a href="https://github.com/deltachat/deltachat-android/releases">https://github.com/deltachat/deltachat-android/releases</a></p>
   </li>
 </ul>
     

src/main/assets/help/eu/help.html

@@ -29,6 +29,21 @@
       <li><a href="#zenbat-kide-izan-ditzake-talde-batek">Zenbat kide izan ditzake talde batek?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">Txat barruko aplikazioak</a>
     <ul>
       <li><a href="#non-lortu-ditzaket-txat-barruko-aplikazioak">Non lortu ditzaket txat barruko aplikazioak?</a></li>
@@ -624,6 +639,197 @@ baina ez da komeni 150 baino gehiago izatea.</p>
 Delta Chat <a href="#groups">eskubide berberekin</a> txateatzeko aukera ematen duen mezularitza pribatuko zerbitzu bat da.
 Informazio gehiago nahi baduzu, kontsultatu <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbarren zenbakia</a>.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1431,26 +1637,20 @@ txat-kontaktuak ezin izango dira erraz identifikatu.</p>
         
       </h3>
 
-<p>Erabiltzen duzun <a href="#relays">erreleak</a> zure IP helbidea jakin behar du,
-eta, batzuetan, baita zure kontaktuen gailuena ere; adibidez,
-kontaktu horiekin <a href="#experiments">deiak</a> egiten badituzu edo
-<a href="#webxdc">aplikazioak</a> erabiltzen badituzu.</p>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
+or use <a href="#webxdc">apps</a> together.</p>
 
-<p>IP helbideak ezinbestekoak dira konektibitaterako eta eraginkortasunerako.
-Ez dira gordetzen, ez argitara ematen.
-Kontuan izan IP helbidea ez dela mezularitzako zerbitzuei-eta eman ohi zaiena
-bezalako helbide zehatz bat; askoz orokorragoa da, eta askotan eskualdea edo
-herrialdea baizik ez du identifikatzen.</p>
+<p>IP Addresses are needed for connectivity and efficiency.
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>Internetek eta beste mezularitza-aplikazioek horrela funtzionatzen dutenez,
-ez dugu horren gaineko bestelako aukerarik eskaintzen, ez galderarik egiten.</p>
-
-<p>Uste baduzu zure IP helbidea jakiteak zure segurtasuna edo pribatutasuna
-arriskuan jar ditzakeela, zera gomendatuko genizuke, VPN bat erabiltzea,
-sistema blokeatzeko moduarekin batera. Zure sistemako aplikazio guztietan
-alternatibak bilatzeak segurtasun-zuloak utziko ditu; adibidez, esteka batean klik egindakoan,
-IP helbideak agerian geratzen zaizkie hirugarren ezezagunei, eta
-hori askoz arriskutsuagoa da.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/fr/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -547,6 +562,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1338,23 +1544,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/id/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -627,6 +642,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1425,23 +1631,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/it/help.html

@@ -29,6 +29,21 @@
       <li><a href="#quanti-membri-possono-partecipare-a-un-singolo-gruppo">Quanti membri possono partecipare a un singolo gruppo?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">Apps in chat</a>
     <ul>
       <li><a href="#dove-posso-trovare-le-apps-in-chat">Dove posso trovare le apps in chat?</a></li>
@@ -620,6 +635,197 @@ ma non è consigliabile superare i 150.</p>
 dove Delta Chat è un servizio di messaggistica privato per chattare con <a href="#groups">uguali diritti</a>.
 Vedi <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">numero di Dunbar</a> per ulteriori approfondimenti.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1412,23 +1618,20 @@ non possono essere identificati facilmente.</p>
         
       </h3>
 
-<p>Il <a href="#relays">ripetitore</a> utilizzato deve conoscere il tuo indirizzo IP,
-e talvolta anche i dispositivi dei tuoi contatti se avete una <a href="#experiments">chiamata</a>
-o utilizzate <a href="#webxdc">apps</a> insieme.</p>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
+or use <a href="#webxdc">apps</a> together.</p>
 
-<p>Gli indirizzi IP sono necessari per la connettività e l’efficienza.
-Non sono né persistenti né esposti.
-Si noti che l’indirizzo IP
-non è come un indirizzo dettagliato che si fornisce a un servizio di consegna,
-ma molto più generico, che spesso definisce solo la regione o il paese.</p>
+<p>IP Addresses are needed for connectivity and efficiency.
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>Poiché questo è il modo in cui Internet e altri servizi di messaggistica funzionano di default,
-non offriamo opzioni né poniamo domande in anticipo.</p>
-
-<p>Se ritieni che il tuo indirizzo IP rappresenti un rischio per la sicurezza o la privacy,
-ti consigliamo di utilizzare una VPN, in combinazione con la modalità di blocco del sistema.
-Esplorare le opzioni in tutte le app del tuo sistema lascerà delle lacune.
-Ad esempio, cliccare su un link espone gli indirizzi IP a sconosciuti e rappresenta il rischio di gran lunga maggiore.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/nl/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -622,6 +637,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1419,23 +1625,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/pl/help.html

@@ -2,18 +2,18 @@
 <html lang="pl"><head><meta charset="UTF-8" /><meta name="viewport" content="initial-scale=1.0" /><link rel="stylesheet" href="../help.css" /></head><body><ul id="top">
   <li><a href="#czym-jest-delta-chat">Czym jest Delta Chat?</a>
     <ul>
-      <li><a href="#howtoe2ee">How can I find people to chat with?</a></li>
-      <li><a href="#why-is-a-chat-marked-as-request">Why is a chat marked as “Request”?</a></li>
-      <li><a href="#how-can-i-put-two-of-my-friends-in-contact-with-each-other">How can I put two of my friends in contact with each other?</a></li>
+      <li><a href="#howtoe2ee">Jak znaleźć osoby do czatu?</a></li>
+      <li><a href="#dlaczego-czat-jest-oznaczony-jako-prośba">Dlaczego czat jest oznaczony jako „Prośba”?</a></li>
+      <li><a href="#jak-mogę-skontaktować-ze-sobą-dwóch-znajomych">Jak mogę skontaktować ze sobą dwóch znajomych?</a></li>
       <li><a href="#multiple-accounts">Czym są profile? Jak mogę przełączać się między nimi?</a></li>
       <li><a href="#kto-widzi-moje-zdjęcie-profilowe">Kto widzi moje zdjęcie profilowe?</a></li>
-      <li><a href="#signature">Can I set a Bio/Status with Delta Chat?</a></li>
+      <li><a href="#signature">Czy w Delta Chat mogę ustawić biografię/status?</a></li>
       <li><a href="#co-oznacza-przypinanie-wyciszanie-i-archiwizowanie">Co oznacza przypinanie, wyciszanie i archiwizowanie?</a></li>
       <li><a href="#save">Jak działają „Zapisane wiadomości”?</a></li>
       <li><a href="#co-oznacza-zielona-kropka">Co oznacza zielona kropka?</a></li>
       <li><a href="#co-oznaczają-znaczniki-wyświetlane-obok-wiadomości-wychodzących">Co oznaczają znaczniki wyświetlane obok wiadomości wychodzących?</a></li>
       <li><a href="#edit">Poprawianie literówek i usuwanie wiadomości po wysłaniu</a></li>
-      <li><a href="#mediaquality">How is media quality handled?</a></li>
+      <li><a href="#mediaquality">Jak obsługiwana jest jakość multimediów?</a></li>
       <li><a href="#ephemeralmsgs">Jak działają znikające wiadomości?</a></li>
       <li><a href="#delold">Co się stanie, jeśli włączę opcję „Usuń wiadomości z urządzenia”?</a></li>
       <li><a href="#remove-account">How can I delete my chat profile?</a></li>
@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -107,87 +122,67 @@
 
 <p>Delta Chat to niezawodna, zdecentralizowana i bezpieczna aplikacja do błyskawicznego przesyłania wiadomości, dostępna na platformy mobilne i stacjonarne.</p>
 
+<p>Natychmiastowe tworzenie <strong>prywatnych profili czatu</strong> z bezpiecznymi i interoperacyjnymi <a href="https://chatmail.at/relays">przekaźnikami chatmail</a>, które oferują natychmiastowe dostarczanie wiadomości oraz powiadomienia push dla urządzeń z systemem iOS i Android.</p>
+
 <ul>
   <li>
-    <p>Instant creation of <strong>private chat profiles</strong>
-with secure and interoperable <a href="https://chatmail.at/relays">chatmail relays</a>
-that offer instant message delivery, and Push Notifications for iOS and Android devices.</p>
+    <p>Wszechstronna obsługa <a href="#multiple-accounts">wielu profili</a> i <a href="#multiclient">wielu urządzeń</a> na wszystkich platformach i między różnymi <a href="https://chatmail.at/clients">aplikacjami chatmail</a>.</p>
   </li>
   <li>
-    <p>Pervasive <a href="#multiple-accounts">multi-profile</a> and
-<a href="#multiclient">multi-device</a> support on all platforms
-and between different <a href="https://chatmail.at/clients">chatmail apps</a>.</p>
+    <p>Interaktywne <a href="#webxdc">aplikacje do czatu</a> w grach i do współpracy</p>
   </li>
   <li>
-    <p>Interactive <a href="#webxdc">in-chat apps</a> for gaming and collaboration</p>
+    <p><a href="#security-audits">Audytowne szyfrowanie end-to-end</a> zabezpieczające przed atakami sieciowymi i serwerowymi.</p>
   </li>
   <li>
-    <p><a href="#security-audits">Audited end-to-end encryption</a>
-safe against network and server attacks.</p>
-  </li>
-  <li>
-    <p>Free and Open Source software, both app and server side,
-built on <a href="https://github.com/chatmail/core/blob/main/standards.md#standards-used-in-delta-chat">Internet Standards</a>.</p>
+    <p>Bezpłatne i otwartoźródłowe oprogramowanie zarówno po stronie aplikacji, jak i serwera, stworzone w oparciu o <a href="https://github.com/chatmail/core/blob/main/standards.md#standards-used-in-delta-chat">standardy internetowe</a>.</p>
   </li>
 </ul>
     
       <h3 id="howtoe2ee">
         
         
-          How can I find people to chat with? <a href="#howtoe2ee" class="anchor"></a>
+          Jak znaleźć osoby do czatu? <a href="#howtoe2ee" class="anchor"></a>
         
         
       </h3>
 
-<p>First, note that Delta Chat is a private messenger.
-There is no public discovery, <em>you</em> decide about your contacts.</p>
+<p>Najpierw pamiętaj, że Delta Chat to prywatny komunikator. Nie ma możliwości publicznego wyszukiwania, sam decydujesz o swoich kontaktach.</p>
 
 <ul>
   <li>
-    <p>If you are <strong>face to face</strong> with your friend or family,
-tap the <strong>QR Code</strong> icon <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" />
-on the main screen.<br />
-Ask your chat partner to <strong>scan</strong> the QR image
-with their Delta Chat app.</p>
+    <p>Jeśli jesteś twarzą w twarz ze znajomym lub rodziną, dotknij ikony <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>kodu QR</strong> na ekranie głównym.
+Poproś partnera czatu o <strong>zeskanowanie</strong> obrazu QR za pomocą aplikacji Delta Chat.</p>
   </li>
   <li>
-    <p>For a <strong>remote</strong> contact setup,
-from the same screen,
-click “Copy” or “Share” and send the <strong>invite link</strong>
-through another private chat.</p>
+    <p>Aby skonfigurować kontakt <strong>zdalny</strong>, na tym samym ekranie naciśnij „Kopiuj” lub „Udostępnij” i wyślij <strong>link zaproszenia</strong> za pośrednictwem innego prywatnego czatu.</p>
   </li>
 </ul>
 
-<p>Now wait while connection gets established.</p>
+<p>Poczekaj, aż połączenie zostanie nawiązane.</p>
 
 <ul>
   <li>
-    <p>If both sides are online, they will soon see a chat
-and can start messaging securely.</p>
+    <p>Jeśli obie strony są online, wkrótce zobaczą czat i będą mogły bezpiecznie wysyłać wiadomości.</p>
   </li>
   <li>
-    <p>If one side is offline or in bad network,
-the ability to chat is delayed until connectivity is restored.</p>
+    <p>Jeśli jedna ze stron jest offline lub ma słaby zasięg, możliwość czatowania zostanie wstrzymana do czasu przywrócenia połączenia.</p>
   </li>
 </ul>
 
-<p>Congratulations!
-You now will automatically use <a href="#e2ee">end-to-end encryption</a> with this contact.
-If you add each other to <a href="#groups">groups</a>, end-to-end encryption will be established among all members.</p>
+<p>Gratulacje! Teraz będziesz automatycznie korzystać z <a href="#e2ee">szyfrowania typu end-to-end</a> dla tego kontaktu. Jeśli dodacie się nawzajem do <a href="#groups">grup</a>, szyfrowanie typu end-to-end zostanie nawiązane między wszystkimi członkami.</p>
     
-      <h3 id="why-is-a-chat-marked-as-request">
+      <h3 id="dlaczego-czat-jest-oznaczony-jako-prośba">
         
         
-          Why is a chat marked as “Request”? <a href="#why-is-a-chat-marked-as-request" class="anchor"></a>
+          Dlaczego czat jest oznaczony jako „Prośba”? <a href="#dlaczego-czat-jest-oznaczony-jako-prośba" class="anchor"></a>
         
         
       </h3>
 
-<p>As being a private messenger,
-only friends and family you <a href="#howtoe2ee">share your QR code or invite link with</a> can write to you.</p>
+<p>Ponieważ jest to prywatny komunikator, tylko znajomi i rodzina, którym <a href="#howtoe2ee">udostępnisz swój kod QR lub link zaproszenia</a>, mogą do ciebie pisać.</p>
 
-<p>Your friends may share your contact with other friends,
-this appears as <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Request</b></p>
+<p>Twoi znajomi mogą udostępniać twoje dane kontaktowe innym znajomym, co jest oznaczone jako <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Prośba</b></p>
 
 <ul>
   <li>
@@ -201,19 +196,17 @@ this appears as <b style="border: 1px solid currentColor; padding: 0 3px; font-s
   </li>
 </ul>
     
-      <h3 id="how-can-i-put-two-of-my-friends-in-contact-with-each-other">
+      <h3 id="jak-mogę-skontaktować-ze-sobą-dwóch-znajomych">
         
         
-          How can I put two of my friends in contact with each other? <a href="#how-can-i-put-two-of-my-friends-in-contact-with-each-other" class="anchor"></a>
+          Jak mogę skontaktować ze sobą dwóch znajomych? <a href="#jak-mogę-skontaktować-ze-sobą-dwóch-znajomych" class="anchor"></a>
         
         
       </h3>
 
-<p>Attach the first contact to the chat of the second using <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attachment Button → Contact</strong>.
-You can also add a little introduction message.</p>
+<p>Dołącz pierwszy kontakt do czatu drugiego, używając przycisku <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Dołączania → Kontakt</strong>. Możesz również dodać krótką wiadomość powitalną.</p>
 
-<p>The second contact will receive a <strong>card</strong> then
-and can tap it to start chatting with the first contact.</p>
+<p>Drugi kontakt otrzyma wtedy <strong>kartkę</strong> i może ją nacisnąć, aby rozpocząć czat z pierwszym kontaktem.</p>
     
       <h3 id="multiple-accounts">
         
@@ -223,15 +216,13 @@ and can tap it to start chatting with the first contact.</p>
         
       </h3>
 
-<p>A profile is <strong>a name, a picture</strong> and some additional information for encrypting messages.
-A profile lives on your device(s) only
-and uses the server only to relay messages.</p>
+<p>Profil składa się z <strong>nazwy, zdjęcia</strong> i dodatkowych informacji służących do szyfrowania wiadomości. Profil jest dostępny tylko na twoim urządzeniu (urządzeniach) i korzysta z serwera wyłącznie do przekazywania wiadomości.</p>
 
 <p>Podczas pierwszej instalacji Delta Chat tworzony jest pierwszy profil.</p>
 
 <p>Później możesz dotknąć swojego zdjęcia profilowego w lewym górnym rogu, aby <strong>Dodać profile</strong> lub <strong>Przełączyć profile</strong>.</p>
 
-<p>You may want to use separate profiles for political, family or work related activities.</p>
+<p>Możesz używać osobnych profili dla aktywności politycznych, rodzinnych lub zawodowych.</p>
 
 <p>Możesz także dowiedzieć się, <a href="#multiclient">jak używać tego samego profilu na wielu urządzeniach</a>.</p>
     
@@ -243,22 +234,19 @@ and uses the server only to relay messages.</p>
         
       </h3>
 
-<p>Możesz dodać zdjęcie profilowe w swoich ustawieniach. Jeśli napiszesz do swoich kontaktów lub dodasz je za pomocą kodu QR, automatycznie zobaczą je jako Twoje zdjęcie profilowe.</p>
+<p>Możesz dodać zdjęcie profilowe w swoich ustawieniach. Jeśli napiszesz do swoich kontaktów lub dodasz je za pomocą kodu QR, automatycznie zobaczą je jako twoje zdjęcie profilowe.</p>
 
-<p>Ze względów prywatności nikt nie widzi Twojego zdjęcia profilowego, dopóki nie napiszesz do niego wiadomości.</p>
+<p>Ze względów prywatności nikt nie widzi twojego zdjęcia profilowego, dopóki nie napiszesz do niego wiadomości.</p>
     
       <h3 id="signature">
         
         
-          Can I set a Bio/Status with Delta Chat? <a href="#signature" class="anchor"></a>
+          Czy w Delta Chat mogę ustawić biografię/status? <a href="#signature" class="anchor"></a>
         
         
       </h3>
 
-<p>Yes,
-you can do so under <strong>Settings → Profile → Bio</strong>.
-Once you sent a message to a contact,
-they will see it when they view your contact details.</p>
+<p>Tak, możesz to zrobić w <strong>Ustawieniach → Profil → Biografia</strong>. Po wysłaniu wiadomości do kontaktu zostanie ona wyświetlona, ​​gdy będzie on przeglądał twoje dane kontaktowe.</p>
     
       <h3 id="co-oznacza-przypinanie-wyciszanie-i-archiwizowanie">
         
@@ -278,7 +266,7 @@ they will see it when they view your contact details.</p>
     <p><strong>Wycisz czaty</strong>, jeśli nie chcesz otrzymywać z nich powiadomień. Wyciszone czaty pozostają na swoim miejscu i możesz też przypiąć wyciszony czat.</p>
   </li>
   <li>
-    <p><strong>Archiwizuj czaty</strong>, jeśli nie chcesz ich już widzieć na liście czatów. Zarchiwizowane czaty pozostają dostępne nad listą czatów lub poprzez wyszukiwanie.</p>
+    <p><strong>Archiwizuj czaty</strong>, jeśli nie chcesz ich już widzieć na liście czatów. Pozostają dostępne nad listą czatów lub poprzez wyszukiwanie i są oznaczone jako <b style="border: 1px solid currentColor; padding: 0 3px; font-size:90%">Zarchiwizowane</b></p>
   </li>
   <li>
     <p>Gdy zarchiwizowany czat otrzyma nową wiadomość, o ile nie zostanie wyciszony, <strong>wyskoczy z archiwum</strong> i wróci na twoją listę czatów.
@@ -309,7 +297,7 @@ they will see it when they view your contact details.</p>
     <p>Później otwórz czat „Zapisane wiadomości” — zobaczysz tam zapisane wiadomości. Naciskając <img style="vertical-align:middle; width:1.2em; margin:1px" src="../go-to-original.png" alt="ikona strzałki w prawo" />, możesz wrócić do oryginalnej wiadomości w oryginalnym czacie</p>
   </li>
   <li>
-    <p>Na koniec możesz również użyć „Zapisz wiadomości”, aby robić <strong>osobiste notatki</strong> — otwórz czat, wpisz coś, dodaj zdjęcie lub wiadomość głosową itp.</p>
+    <p>Na koniec możesz również użyć „Zapisanych wiadomości”, aby robić <strong>osobiste notatki</strong> — otwórz czat, wpisz coś, dodaj zdjęcie lub wiadomość głosową itp.</p>
   </li>
   <li>
     <p>Ponieważ „Zapisane wiadomości” są zsynchronizowane, mogą być bardzo przydatne do przesyłania danych między urządzeniami</p>
@@ -326,13 +314,9 @@ they will see it when they view your contact details.</p>
         
       </h3>
 
-<p>You can sometimes see a <strong>green dot</strong> <img style="vertical-align:middle; width:1.2em; margin:1px" src="../green-dot.png" alt="" />
-next to the avatar of a contact.
-It means they were <strong>recently seen by you</strong> in the last 10 minutes,
-e.g. because they messaged you or sent a read receipt.</p>
+<p>Czasami można zobaczyć <strong>zieloną kropkę</strong> <img style="vertical-align:middle; width:1.2em; margin:1px" src="../green-dot.png" alt="" /> obok awatara kontaktu. Oznacza to, że był on <strong>niedawno widziany przez ciebie</strong> w ciągu ostatnich 10 minut, np. wysłał ci wiadomość lub potwierdzenie odczytu.</p>
 
-<p>So this is not a real time online status
-and others will as well not always see that you are “online”.</p>
+<p>Nie jest to więc status online w czasie rzeczywistym i inni również nie zawsze zobaczą, że jesteś „online”.</p>
     
       <h3 id="co-oznaczają-znaczniki-wyświetlane-obok-wiadomości-wychodzących">
         
@@ -344,19 +328,16 @@ and others will as well not always see that you are “online”.</p>
 
 <ul>
   <li>
-    <p><strong>One tick</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick1.png" alt="" />
-means that the message was sent successfully to the <a href="#relays">relay</a>.</p>
+    <p><strong>Jeden znacznik</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick1.png" alt="" /> oznacza, że ​​wiadomość została pomyślnie wysłana do <a href="#relays">przekaźnika</a>.</p>
   </li>
   <li>
-    <p><strong>Two ticks</strong>  <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick2.png" alt="" />
-indicate your contact has read the message.</p>
+    <p><strong>Dwa znaczniki</strong> <img style="vertical-align:middle; width:1.5em; margin:1px" src="../tick2.png" alt="" /> oznaczają, że twój kontakt przeczytał wiadomość.</p>
   </li>
 </ul>
 
-<p>In <a href="#groups">groups</a> the second tick means that at least one member has reported back having read the message.</p>
+<p>W <a href="#groups">grupach</a> drugi znacznik oznacza, że ​​co najmniej jeden członek potwierdził przeczytanie wiadomości.</p>
 
-<p>You will only get the second tick if both you and one of the recipients who read the message
-has <strong>Settings → Chats → Read Receipts</strong> enabled.</p>
+<p>Drugi znacznik pojawi się tylko wtedy, gdy ty i jeden z odbiorców, którzy przeczytali wiadomość, macie włączoną opcję <strong>Ustawienia → Czaty → Potwierdzenie odczytu</strong>.</p>
     
       <h3 id="edit">
         
@@ -382,26 +363,22 @@ has <strong>Settings → Chats → Read Receipts</strong> enabled.</p>
       <h3 id="mediaquality">
         
         
-          How is media quality handled? <a href="#mediaquality" class="anchor"></a>
+          Jak obsługiwana jest jakość multimediów? <a href="#mediaquality" class="anchor"></a>
         
         
       </h3>
 
-<p>Images, videos, files, voice messages etc. can be sent using the <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attach-</strong>
-or <img style="vertical-align:middle; width:0.8em; margin:1px" src="../mic.png" alt="Microphone" /> <strong>Voice Message</strong> buttons.</p>
+<p>Obrazy, filmy, pliki, wiadomości głosowe itp. można wysyłać za pomocą przycisków: <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Załącz</strong> lub <img style="vertical-align:middle; width:0.8em; margin:1px" src="../mic.png" alt="Microphone" /><strong>Wiadomość głosowa</strong>.</p>
 
 <ul>
   <li>
-    <p>By default, compression ensures <strong>fast, efficient delivery</strong> that respects everyone’s data limits and storage.
-This is ideal for everyday communication.</p>
+    <p>Domyślnie kompresja zapewnia <strong>szybką i wydajną dostawę</strong>, respektując limity danych i pamięci wszystkich użytkowników. Jest to idealne rozwiązanie do codziennej komunikacji.</p>
   </li>
   <li>
-    <p>In regions with worse connectivity,
-you can choose higher compression at <strong>Settings → Chats → Outgoing Media Quality</strong>.</p>
+    <p>W regionach o słabszej łączności można wybrać wyższą kompresję w <strong>Ustawieniach → Czaty → Jakość mediów wychodzących</strong>.</p>
   </li>
   <li>
-    <p>If you specifically need to send media in its <strong>original quality</strong>, use <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Attach → File</strong> in the chat.
-Please use this method sparingly, as sending original files will significantly increase data usage for you and all recipients in the chat.</p>
+    <p>Jeśli chcesz wysłać multimedia w <strong>oryginalnej jakości</strong>, użyj w czacie opcji <img style="vertical-align:middle; width:1.0em; margin:1px" src="../paperclip.png" alt="Paperclip" /> <strong>Załącz → Plik</strong>. Używaj tej metody oszczędnie, ponieważ wysyłanie oryginalnych plików znacznie zwiększy zużycie danych przez ciebie i wszystkich odbiorców na czacie.</p>
   </li>
 </ul>
     
@@ -415,21 +392,11 @@ Please use this method sparingly, as sending original files will significantly i
 
 <p>Możesz włączyć „znikające wiadomości” w ustawieniach czatu, w prawym górnym rogu okna czatu, wybierając przedział czasu od 5 minut do 1 roku.</p>
 
-<p>Until the setting is turned off again,
-each chat member’s Delta Chat app takes care
-of deleting the messages
-after the selected time span.
-The time span begins
-when the receiver first sees the message in Delta Chat.
-The messages are deleted both,
-on the servers,
-and in the apps itself.</p>
+<p>Dopóki ustawienie nie zostanie ponownie wyłączone, aplikacja Delta Chat u każdego członka czatu zajmie się usuwaniem wiadomości po wybranym okresie. Przedział czasu rozpoczyna się w momencie, gdy odbiorca po raz pierwszy zobaczy wiadomość w Delta Chat. Wiadomości są usuwane zarówno na serwerze, jak i w samej aplikacji.</p>
 
 <p>Pamiętaj, że na znikających wiadomościach możesz polegać tylko wtedy, gdy ufasz swoim partnerom czatu; złośliwi partnerzy czatu mogą robić zdjęcia lub w inny sposób zapisywać, kopiować lub przesyłać dalej wiadomości przed usunięciem.</p>
 
-<p>Apart from that,
-if one chat partner uninstalls Delta Chat,
-the (anyway encrypted) messages may take longer to get deleted from their server.</p>
+<p>Poza tym, jeśli jeden z uczestników czatu odinstaluje aplikację Delta Chat, usunięcie (i tak zaszyfrowanych) wiadomości z jego serwera może potrwać dłużej.</p>
     
       <h3 id="delold">
         
@@ -439,9 +406,9 @@ the (anyway encrypted) messages may take longer to get deleted from their server
         
       </h3>
 
-<p>Jeśli chcesz zaoszczędzić miejsce na urządzeniu, możesz wybrać opcję automatycznego usuwania starych wiadomości.</p>
+<p>Jeśli chcesz zaoszczędzić miejsce na swoim urządzeniu, możesz wybrać opcję automatycznego usuwania starych wiadomości.</p>
 
-<p>Aby ją włączyć, przejdź do „Usuń wiadomości z urządzenia” w ustawieniach w sekcji „Czaty i media”. Możesz ustawić przedział czasowy pomiędzy „po 1 godzinie” a „po 1 roku”; w ten sposób <em>wszystkie</em> wiadomości zostaną usunięte z urządzenia, gdy tylko staną się starsze.</p>
+<p>Aby ją włączyć, przejdź do <strong>Ustawienia → Czaty → Usuń wiadomości z urządzenia</strong> . Możesz ustawić przedział czasowy pomiędzy „po 1 godzinie” a „po 1 roku”; w ten sposób <em>wszystkie</em> wiadomości zostaną usunięte z urządzenia, gdy tylko staną się starsze.</p>
     
       <h3 id="remove-account">
         
@@ -493,10 +460,10 @@ and <a href="#edit">delete their own messages</a> from all member’s devices.</
     <p>Wybierz <strong>Nowy czat</strong>, a następnie <strong>Nowa grupa</strong> z menu w prawym górnym rogu lub naciśnij odpowiedni przycisk na Androidzie / iOS.</p>
   </li>
   <li>
-    <p>Na następnym ekranie wybierz <strong>członków grupy</strong> i zdefiniuj <strong>nazwę grupy</strong>. Możesz też wybrać awatar <strong>grupy</strong>.</p>
+    <p>Na następnym ekranie wybierz <strong>członków grupy</strong> i zdefiniuj <strong>nazwę grupy</strong>. Możesz też wybrać <strong>awatar grupy</strong>.</p>
   </li>
   <li>
-    <p>Zaraz po napisaniu pierwszej wiadomości w grupie wszyscy członkowie zostaną poinformowani o nowej grupie i mogą odpowiedzieć w grupie (jeżeli nie napiszesz wiadomości w grupie, grupa jest niewidoczna dla członków).</p>
+    <p>Gdy tylko napiszesz <strong>pierwszą wiadomość</strong> w grupie, wszyscy członkowie zostaną poinformowani o nowej grupie i będą mogli odpowiadać w grupie (dopóki nie napiszesz wiadomości w grupie, grupa będzie niewidoczna dla członków).</p>
   </li>
 </ul>
     
@@ -539,8 +506,7 @@ However, since groups are <a href="#groups">meant for trusted people</a>, avoid
         
       </h3>
 
-<p>Ponieważ nie jesteś członkiem grupy, nie możesz dodać siebie ponownie. 
-  Jednak nie ma problemu, po prostu poproś dowolnego członka grupy na normalnym czacie, aby dodał cię ponownie.</p>
+<p>Ponieważ nie jesteś członkiem grupy, nie możesz dodać siebie ponownie. Jednak nie ma problemu, po prostu poproś dowolnego członka grupy na normalnym czacie, aby dodał cię ponownie.</p>
     
       <h3 id="nie-chcę-już-otrzymywać-wiadomości-od-grupy">
         
@@ -555,8 +521,7 @@ However, since groups are <a href="#groups">meant for trusted people</a>, avoid
 Jeśli później będziesz chciał ponownie dołączyć do grupy, poproś innego członka grupy, aby dodał cię do grupy.</li>
 </ul>
 
-<p>Alternatywnie możesz też „Wyłączyć powiadomienia” dla grupy  dzięki temu otrzymasz wszystkie wiadomości i 
-  nadal będziesz mógł pisać, ale nie będziesz już powiadamiany o żadnych nowych wiadomościach.</p>
+<p>Alternatywnie możesz też „Wyłączyć powiadomienia” dla grupy, dzięki temu otrzymasz wszystkie wiadomości i nadal będziesz mógł pisać, ale nie będziesz już powiadamiany o żadnych nowych wiadomościach.</p>
     
       <h3 id="cloning-a-group">
         
@@ -597,6 +562,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -849,8 +1005,7 @@ Welcome to the power of the interoperable chatmail relay network :)</p>
     <p>Sprawdź dokładnie, czy oba urządzenia są w tym <strong>samym Wi-Fi lub tej samej sieci</strong></p>
   </li>
   <li>
-    <p>Na <strong>Windowsie</strong>, przejdź do “Panel sterowania / Sieć i internet” i upewnij się, że <strong>Sieć prywatna</strong> jest wybrana jako “Typ profilu sieci”
-(po przeniesieniu możesz wrócić do pierwotnej wartości)</p>
+    <p>Na <strong>Windowsie</strong>, przejdź do „Panel sterowania / Sieć i internet” i upewnij się, że <strong>Sieć prywatna</strong> jest wybrana jako „Typ profilu sieci” (po przeniesieniu możesz wrócić do pierwotnej wartości)</p>
   </li>
   <li>
     <p>W systemie <strong>iOS</strong> upewnij się, że jest przydzielony dostęp do opcji „Ustawienia » Aplikacje » Delta Chat » <strong>Sieć lokalna</strong>”</p>
@@ -894,15 +1049,14 @@ Welcome to the power of the interoperable chatmail relay network :)</p>
 
 <ul>
   <li>
-    <p>Na starym urządzeniu przejdź do <strong>Ustawienia → Czaty i media → Eksport kopii zapasowej</strong>. Wprowadź swój PIN odblokowania ekranu, wzór lub hasło. Następnie możesz nacisnąć „Utwórz kopię”. Spowoduje to zapisanie pliku kopii zapasowej na urządzeniu. Teraz musisz jakoś przenieść go na inne urządzenie.</p>
+    <p>Na starym urządzeniu przejdź do <strong>Ustawienia → Czaty → Eksport kopii zapasowej</strong>. Wprowadź swój PIN odblokowania ekranu, wzór lub hasło. Następnie możesz nacisnąć „Utwórz kopię”. Spowoduje to zapisanie pliku kopii zapasowej na urządzeniu. Teraz musisz jakoś przenieść go na inne urządzenie.</p>
   </li>
   <li>
-    <p>Na nowym urządzeniu, na ekranie logowania, zamiast logować się na swoje konto e-mail, wybierz <strong>Przywróć z kopii zapasowej</strong>. Po zaimportowaniu Twoje rozmowy, klucze szyfrujące i multimedia powinny zostać skopiowane na nowe urządzenie.
-Jeśli korzystasz z iOS i napotykasz trudności, może <a href="https://support.delta.chat/t/import-backup-to-ios/1628">ten poradnik</a> Ci pomoże.</p>
+    <p>Na nowym urządzeniu wybierz: <strong>Mam już profil → Przywróć z kopii zapasowej</strong>. Jeśli korzystasz z iOS i napotykasz trudności, może <a href="https://support.delta.chat/t/import-backup-to-ios/1628">ten poradnik</a> ci pomoże.</p>
   </li>
 </ul>
 
-<p>Jesteś teraz zsynchronizowany i możesz używać obu urządzeń do wysyłania i odbierania wiadomości zaszyfrowanych end-to-end w komunikacji ze swoimi partnerami.</p>
+<p>Jesteś teraz zsynchronizowany i w komunikacji ze swoimi partnerami możesz używać obu urządzeń do wysyłania i odbierania wiadomości zaszyfrowanych metodą end-to-end.</p>
     
       <h3 id="czy-są-jakieś-plany-wprowadzenia-klienta-web-delta-chat">
         
@@ -1289,23 +1443,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/pt/help.html

@@ -29,6 +29,21 @@
       <li><a href="#quantos-membros-podem-participar-em-um-único-grupo">Quantos membros podem participar em um único grupo?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">Aplicativos embutidos</a>
     <ul>
       <li><a href="#onde-posso-obter-aplicativos-embutidos">Onde posso obter aplicativos embutidos?</a></li>
@@ -622,6 +637,197 @@ mas não é recomendável mais de 150.</p>
 mas o Delta Chat é um mensageiro privado para conversar com <a href="#groups">direitos iguais</a>.
 Consulte o <a href="https://pt.wikipedia.org/wiki/N%C3%BAmero_de_Dunbar">Número de Dunbar</a> para obter mais informações.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1420,23 +1626,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/ru/help.html

@@ -29,6 +29,21 @@
       <li><a href="#сколько-участников-может-быть-в-одной-группе">Сколько участников может быть в одной группе?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">Встроенные приложения чата</a>
     <ul>
       <li><a href="#где-можно-найти-встроенные-приложения">Где можно найти встроенные приложения?</a></li>
@@ -622,6 +637,197 @@
 в то время как Delta Chat - это приватный мессенджер для общения на <a href="#groups">равных правах</a>.
 Смотрите <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">число Данбара</a> для более глубокого понимания.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1418,25 +1624,20 @@ Delta Chat вместо этого использует реализацию Ope
         
       </h3>
 
-<p>Используемый <a href="#relays">релей</a> должен знать ваш IP-адрес,
-а также иногда устройства ваших контактов, если вы проводите совместные <a href="#experiments">звонки</a>
-или используете <a href="#webxdc">приложения</a>.</p>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
+or use <a href="#webxdc">apps</a> together.</p>
 
-<p>IP-адреса необходимы для обеспечения соединения и эффективности.
-Они не сохраняются и не передаются третьим лицам.
-Обратите внимание, что IP-адрес</p>
-<ul>
-  <li>это не подробный адрес, который вы указываете службе доставки,
-а скорее приблизительный, обычно определяющий регион или страну.</li>
-</ul>
+<p>IP Addresses are needed for connectivity and efficiency.
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>Поскольку именно так по умолчанию работает интернет и другие мессенджеры,
-мы не предлагаем здесь никаких настроек и не задаём предварительных вопросов</p>
-
-<p>Если вы считаете свой IP-адрес угрозой безопасности или конфиденциальности,
-мы рекомендуем использовать VPN в сочетании с режимом блокировки системы.
-Поиск настроек во всех приложениях на вашем устройстве оставит уязвимости.
-Например, нажатие на ссылку раскрывает IP-адрес неизвестным лицам и представляет собой гораздо больший риск в данном случае.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/sk/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -627,6 +642,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1425,23 +1631,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/sq/help.html

@@ -29,6 +29,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -627,6 +642,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1427,23 +1633,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/uk/help.html

@@ -28,6 +28,21 @@
       <li><a href="#how-many-members-can-participate-in-a-single-group">How many members can participate in a single group?</a></li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">In-chat apps</a>
     <ul>
       <li><a href="#where-can-i-get-in-chat-apps">Where can I get in-chat apps?</a></li>
@@ -582,6 +597,197 @@ but more than 150 is not recommended.</p>
 where Delta Chat is a private messenger for chatting with <a href="#groups">equal rights</a>.
 See <a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">Dunbar’s number</a> for more insights.</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1268,23 +1474,20 @@ can not be identified easily.</p>
         
       </h3>
 
-<p>The used <a href="#relays">relay</a> needs to know your IP Address,
-as well as sometimes your contact’s devices if you have a <a href="#experiments">call</a>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
 or use <a href="#webxdc">apps</a> together.</p>
 
 <p>IP Addresses are needed for connectivity and efficiency.
-They are neither persisted nor exposed.
-Note that the IP Address
-is not like a detailed address you give to a delivery service,
-but much more coarse, often defining region or country only.</p>
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>As this is just how the internet and other messengers work by default,
-we do not offer options here or ask upfront questions.</p>
-
-<p>If you see your IP Address as a security or privacy risk,
-we recommend to use a VPN, in combination with system lockdown mode.
-Hunting down options in all apps on your system will leave gaps.
-For example, tapping a link exposes IP Addresses to unknown parties and is the by far larger risk here.</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
     
       <h3 id="sealedsender">
         

src/main/assets/help/zh_CN/help.html

@@ -32,6 +32,21 @@
       </li>
     </ul>
   </li>
+  <li><a href="#channels">Channels</a>
+    <ul>
+      <li><a href="#subscribe-to-a-channel">Subscribe to a channel</a></li>
+      <li><a href="#create-a-channel">Create a channel</a></li>
+      <li><a href="#how-many-subscribers-can-a-channel-have">How many subscribers can a channel have?</a></li>
+    </ul>
+  </li>
+  <li><a href="#calls">Calls</a>
+    <ul>
+      <li><a href="#place-a-call">Place a call</a></li>
+      <li><a href="#accept-or-reject-a-call">Accept or reject a call</a></li>
+      <li><a href="#during-a-call">During a call</a></li>
+      <li><a href="#missed-calls-and-notifications">Missed calls and notifications</a></li>
+    </ul>
+  </li>
   <li><a href="#webxdc">Webxdc 应用</a>
     <ul>
       <li><a href="#我在哪里可以获得-webxdc-应用">我在哪里可以获得 Webxdc 应用？</a></li>
@@ -621,6 +636,197 @@ Please use this method sparingly, as sending original files will significantly i
 其中Delta Chat 是与<a href="#groups">平等权利</a> 聊天的私人信使。
 相关知识，请参阅<a href="https://en.wikipedia.org/wiki/Dunbar%27s_number">邓巴数</a>。</p>
     
+      <h2 id="channels">
+        
+        
+          Channels <a href="#channels" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Channels are a one-to-many tool for broadcasting messages.</p>
+    
+      <h3 id="subscribe-to-a-channel">
+        
+        
+          Subscribe to a channel <a href="#subscribe-to-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>Scan the <img style="vertical-align:middle; height:1.3em; margin:1px" src="../qr-icon.png" /> <strong>QR code</strong>
+or tap the <strong>invite link</strong> you got from the channel owner.</li>
+</ul>
+
+<p>That’s all!
+You will receive a few of the messages from the channel history
+and, from that point on, all new messages from the channel.</p>
+
+<p><strong>Don’t worry,</strong> if that does not happen immediately.
+Once the channel owner comes online, your join request will be processed.</p>
+
+<p>As all of Delta Chat, also Channels are private and decentralized,
+there is no public discovery.</p>
+
+<p>Other channel subscribers will not see that you subscribed and cannot message you.
+The channel owner, however, can message you.
+They will also see that you read a message unless you have read receipts disabled.</p>
+
+<p>If you do not want to share your main profile,
+you can also create a <a href="#multiple-accounts">dedicated profile</a> for joining a channel.</p>
+    
+      <h3 id="create-a-channel">
+        
+        
+          Create a channel <a href="#create-a-channel" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>Tap <strong>New Chat</strong> and choose <strong>New Channel</strong>.</p>
+  </li>
+  <li>
+    <p>Enter a <strong>name</strong>, optionally set an <strong>image</strong> and <strong>description</strong>, and hit the <strong>Create</strong> button.</p>
+  </li>
+  <li>
+    <p>You can now send and manage messages as usual.</p>
+  </li>
+  <li>
+    <p>From the channel’s profile, <strong>share the QR code or invite link with others</strong>.</p>
+  </li>
+</ul>
+
+<p>Subscribers will receive your messages,
+but they cannot send messages in your channel.
+When subscribing, they will receive <strong>a few of the latest messages of the channel history</strong>.</p>
+
+<p>You can see the <strong>view count</strong> beside each message.
+Note that this only counts subscribers who have read receipts enabled,
+so the real view count may be larger.</p>
+    
+      <h3 id="how-many-subscribers-can-a-channel-have">
+        
+        
+          How many subscribers can a channel have? <a href="#how-many-subscribers-can-a-channel-have" class="anchor"></a>
+        
+        
+      </h3>
+
+<p>Channels are designed for much larger audiences than <a href="#groups">groups</a>.</p>
+
+<p>The practical limit depends on the used <a href="#relays">relay</a>,
+so there is no single fixed number that applies everywhere.</p>
+
+<p>For really large channels with several tens of thousands of subscribers,
+we recommend using a <a href="#multiple-accounts">dedicated profile</a> for the channel
+and checking whether the relay is suitable.</p>
+
+<p>But don’t be too hesitant: Delta Chat is designed to be relay-agnostic,
+so you can change your relay at any point easily -
+your existing subscribers will not even notice.
+You only have to update the invite link you share with new subscribers in that case.</p>
+    
+      <h2 id="calls">
+        
+        
+          Calls <a href="#calls" class="anchor"></a>
+        
+        
+      </h2>
+
+<p>Delta Chat supports one-to-one <strong>audio calls</strong> and <strong>video calls</strong>.</p>
+
+<p>Calls are supported on Desktop, Ubuntu Touch, iOS and Android 8 and newer.</p>
+    
+      <h3 id="place-a-call">
+        
+        
+          Place a call <a href="#place-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>In a one-to-one chat, tap the 📞 <strong>call icon</strong>.</p>
+  </li>
+  <li>
+    <p>This opens a small menu
+where you can choose whether to place an <strong>Audio Call</strong> or a <strong>Video Call</strong>.</p>
+  </li>
+</ul>
+    
+      <h3 id="accept-or-reject-a-call">
+        
+        
+          Accept or reject a call <a href="#accept-or-reject-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>When someone calls you,
+Delta Chat shows an <strong>incoming call screen</strong> or notification.</p>
+  </li>
+  <li>
+    <p>Tap <strong>Accept</strong> to answer
+or <strong>Decline</strong> to reject the call.</p>
+  </li>
+</ul>
+    
+      <h3 id="during-a-call">
+        
+        
+          During a call <a href="#during-a-call" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>You can <strong>mute</strong> your microphone.</p>
+  </li>
+  <li>
+    <p>You can <strong>enable or disable your camera</strong>.</p>
+  </li>
+  <li>
+    <p>On mobile, you can <strong>switch between front and back cameras</strong>.</p>
+  </li>
+</ul>
+
+<p>Depending on the device, you can also select the audio output or use picture-in-picture.
+On desktop, the call is using a dedicated window
+and you can continue using the main Delta Chat window as usual.</p>
+    
+      <h3 id="missed-calls-and-notifications">
+        
+        
+          Missed calls and notifications <a href="#missed-calls-and-notifications" class="anchor"></a>
+        
+        
+      </h3>
+
+<ul>
+  <li>
+    <p>If you do not answer, do not hear the ringing, or do not have your device at hand,
+the call appears as a <strong>missed call</strong>.</p>
+  </li>
+  <li>
+    <p><strong>Only your accepted contacts</strong> can make your device ring.
+Contact requests will appear as usual and will not ring.</p>
+  </li>
+  <li>
+    <p>At <strong>Settings → Notifications → Calls</strong>,
+you can disable the special call ringing screen completely.
+If you do so, you will not be disturbed by any ringing notification,
+you can still pick up the call by tapping the incoming call message bubble in its chat.</p>
+  </li>
+</ul>
+    
       <h2 id="webxdc">
         
         
@@ -1414,22 +1620,20 @@ Delta Chat 应用程序不会在服务器上存储任何有关联系人或群组
         
       </h4>
 
-<p>使用的 <a href="#relays">中继服务器</a> 需要知道您的 IP 地址、
-有时还需要知道联系人的设备（如果你们有 <a href="#experiments">通话</a>），或一起使用 <a href="#webxdc">Webxdc应用程序</a>。</p>
+<p>The used <a href="#relays">relays</a> need to know your IP Address,
+as well as sometimes your contact’s devices if you have a <a href="#calls">call</a>
+or use <a href="#webxdc">apps</a> together.</p>
 
-<p>IP 地址是连接和提高效率所必需的。
-它们既不会持久存在，也不会暴露。
-请注意，IP 地址
-不像你给快递服务的详细地址、
-而是更粗略，通常只定义地区或国家。</p>
+<p>IP Addresses are needed for connectivity and efficiency.
+Delta Chat neither persists nor exposes them.
+Note that IP Addresses
+are not like an address you give to a delivery service,
+but typically less precise, often defining city or region only.</p>
 
-<p>这只是互联网和其他信使的默认工作方式、
-我们在此不提供选项，也不预先提问。</p>
-
-<p>如果你认为你的 IP 地址存在安全或隐私风险、
-我们建议使用 VPN 并结合系统锁定模式。
-在系统的所有应用程序中查找选项会留下漏洞。
-例如，点击链接会将 IP 地址暴露给未知方，这是目前最大的风险。</p>
+<p>If you see your IP Address as a risk,
+we recommend to use a VPN for the whole system.
+Per-app options leave gaps across your system.
+For example, tapping a link can expose IP Addresses to unknown parties, which is by far the larger risk.</p>
 
 <p>###Delta Chat 是否支持 “密封发件人”？{#sealedsender}</p>
 

src/main/java/chat/delta/rpc/Rpc.java

@@ -443,10 +443,19 @@ public class Rpc {
   }
 
   /**
-   * Estimate the number of messages that will be deleted
-   * by the set_config()-options `delete_device_after` or `delete_server_after`.
+   * Estimates the number of messages that will be deleted
+   * by the `set_config()`-option `delete_device_after`.
+   * <p>
    * This is typically used to show the estimated impact to the user
    * before actually enabling deletion of old messages.
+   * <p>
+   * Messages in the "Saved Messages" chat are not counted as they will not be deleted automatically.
+   * <p>
+   * Parameters:
+   * - `from_server`: Deprecated, pass `false` here
+   * - `seconds`: Count messages older than the given number of seconds.
+   * <p>
+   * Returns the number of messages that are older than the given number of seconds.
    */
   public Integer estimateAutoDeletionCount(Integer accountId, Boolean fromServer, Integer seconds) throws RpcException {
     return transport.callForResult(new TypeReference<Integer>(){}, "estimate_auto_deletion_count", mapper.valueToTree(accountId), mapper.valueToTree(fromServer), mapper.valueToTree(seconds));
@@ -913,8 +922,22 @@ public class Rpc {
   }
 
   /**
-   * Returns all messages of a particular chat.
+   * Get all message IDs belonging to a chat.
    * <p>
+   * The list is already sorted and starts with the oldest message.
+   * Clients should not try to re-sort the list as this would be an expensive action
+   * and would result in inconsistencies between clients.
+   * Note that the messages are not necessarily sorted by their ID or by their displayed timestamp;
+   * UIs need to handle both the case of descending message IDs
+   * and of decreasing timestamps.
+   * <p>
+   * Optionally, 'daymarkers' added to the ID array may help to
+   * implement virtual lists.
+   * <p>
+   * Parameters:
+   * <p>
+   * * chat_id The chat ID of which the messages IDs should be queried.
+   * * _info_only: Deprecated, pass `false` here.
    * * `add_daymarker` - If `true`, add day markers as `DC_MSG_ID_DAYMARKER` to the result,
    * e.g. [1234, 1237, 9, 1239]. The day marker timestamp is the midnight one for the
    * corresponding (following) day in the local timezone.
@@ -932,6 +955,14 @@ public class Rpc {
     return transport.callForResult(new TypeReference<java.util.List<Integer>>(){}, "get_existing_msg_ids", mapper.valueToTree(accountId), mapper.valueToTree(msgIds));
   }
 
+  /**
+   * Get all messages belonging to a chat.
+   * <p>
+   * Similar to `get_message_ids` / `getMessageIds`,
+   * see that function for details.
+   * The difference is that this function here returns a list of `MessageListItem`,
+   * which is an enum of a message or a daymarker.
+   */
   public java.util.List<MessageListItem> getMessageListItems(Integer accountId, Integer chatId, Boolean infoOnly, Boolean addDaymarker) throws RpcException {
     return transport.callForResult(new TypeReference<java.util.List<MessageListItem>>(){}, "get_message_list_items", mapper.valueToTree(accountId), mapper.valueToTree(chatId), mapper.valueToTree(infoOnly), mapper.valueToTree(addDaymarker));
   }
@@ -1181,11 +1212,6 @@ public class Rpc {
     return transport.callForResult(new TypeReference<String>(){}, "make_vcard", mapper.valueToTree(accountId), mapper.valueToTree(contacts));
   }
 
-  /** Sets vCard containing the given contacts to the message draft. */
-  public void setDraftVcard(Integer accountId, Integer msgId, java.util.List<Integer> contacts) throws RpcException {
-    transport.call("set_draft_vcard", mapper.valueToTree(accountId), mapper.valueToTree(msgId), mapper.valueToTree(contacts));
-  }
-
   /**
    * Returns the [`ChatId`] for the 1:1 chat with `contact_id` if it exists.
    * <p>
@@ -1328,10 +1354,47 @@ public class Rpc {
     return transport.callForResult(new TypeReference<String>(){}, "get_connectivity_html", mapper.valueToTree(accountId));
   }
 
+  /**
+   * Sets current location.
+   * <p>
+   * Returns true if location streaming is currently
+   * enabled and locations should be updated.
+   * <p>
+   * Location is represented as latitude and longitude in degrees
+   * and horizontal accuracy in meters.
+   */
+  public Boolean setLocation(Float latitude, Float longitude, Float accuracy) throws RpcException {
+    return transport.callForResult(new TypeReference<Boolean>(){}, "set_location", mapper.valueToTree(latitude), mapper.valueToTree(longitude), mapper.valueToTree(accuracy));
+  }
+
   public java.util.List<Location> getLocations(Integer accountId, Integer chatId, Integer contactId, Integer timestampBegin, Integer timestampEnd) throws RpcException {
     return transport.callForResult(new TypeReference<java.util.List<Location>>(){}, "get_locations", mapper.valueToTree(accountId), mapper.valueToTree(chatId), mapper.valueToTree(contactId), mapper.valueToTree(timestampBegin), mapper.valueToTree(timestampEnd));
   }
 
+  /**
+   * Enables location streaming in chat identified by `chat_id` for `seconds` seconds.
+   * <p>
+   * Pass 0 as the number of seconds to disable location streaming in the chat.
+   */
+  public void sendLocationsToChat(Integer accountId, Integer chatId, Integer seconds) throws RpcException {
+    transport.call("send_locations_to_chat", mapper.valueToTree(accountId), mapper.valueToTree(chatId), mapper.valueToTree(seconds));
+  }
+
+  /** Returns whether any chat is sending locations. */
+  public Boolean isSendingLocations(Integer accountId) throws RpcException {
+    return transport.callForResult(new TypeReference<Boolean>(){}, "is_sending_locations", mapper.valueToTree(accountId));
+  }
+
+  /** Returns whether `chat_id` is sending locations. */
+  public Boolean isSendingLocationsToChat(Integer accountId, Integer chatId) throws RpcException {
+    return transport.callForResult(new TypeReference<Boolean>(){}, "is_sending_locations_to_chat", mapper.valueToTree(accountId), mapper.valueToTree(chatId));
+  }
+
+  /** Stops sending locations to all chats. */
+  public void stopSendingLocations() throws RpcException {
+    transport.call("stop_sending_locations");
+  }
+
   public void sendWebxdcStatusUpdate(Integer accountId, Integer instanceMsgId, String updateStr, String descr) throws RpcException {
     transport.call("send_webxdc_status_update", mapper.valueToTree(accountId), mapper.valueToTree(instanceMsgId), mapper.valueToTree(updateStr), mapper.valueToTree(descr));
   }
@@ -1467,17 +1530,18 @@ public class Rpc {
     transport.call("resend_messages", mapper.valueToTree(accountId), mapper.valueToTree(messageIds));
   }
 
+  /** @deprecated as of 2026-04; use `send_msg` with `Viewtype::Sticker` instead. */
   public Integer sendSticker(Integer accountId, Integer chatId, String stickerPath) throws RpcException {
     return transport.callForResult(new TypeReference<Integer>(){}, "send_sticker", mapper.valueToTree(accountId), mapper.valueToTree(chatId), mapper.valueToTree(stickerPath));
   }
 
   /**
-   * Send a reaction to message.
+   * Sends a reaction to message.
    * <p>
-   * Reaction is a string of emojis separated by spaces. Reaction to a
-   * single message can be sent multiple times. The last reaction
-   * received overrides all previously received reactions. It is
-   * possible to remove all reactions by sending an empty string.
+   * A reaction is a string that represents an emoji.
+   * You can call this function again to change the emoji;
+   * the last sent reaction overrides all previously sent reactions.
+   * It is possible to remove the reaction by sending an empty string.
    */
   public Integer sendReaction(Integer accountId, Integer messageId, java.util.List<String> reaction) throws RpcException {
     return transport.callForResult(new TypeReference<Integer>(){}, "send_reaction", mapper.valueToTree(accountId), mapper.valueToTree(messageId), mapper.valueToTree(reaction));

src/main/java/chat/delta/rpc/types/EnteredLoginParam.java

@@ -12,6 +12,13 @@ public class EnteredLoginParam {
   /** TLS options: whether to allow invalid certificates and/or invalid hostnames. Default: Automatic */
   @com.fasterxml.jackson.annotation.JsonSetter(nulls = com.fasterxml.jackson.annotation.Nulls.SET)
   public EnteredCertificateChecks certificateChecks;
+  /**
+   * IMAP server folder.
+   * <p>
+   * Defaults to "INBOX" if not set. Should not be an empty string.
+   */
+  @com.fasterxml.jackson.annotation.JsonSetter(nulls = com.fasterxml.jackson.annotation.Nulls.SET)
+  public String imapFolder;
   /** Imap server port. */
   @com.fasterxml.jackson.annotation.JsonSetter(nulls = com.fasterxml.jackson.annotation.Nulls.SET)
   public Integer imapPort;

src/main/java/chat/delta/rpc/types/Reactions.java

@@ -5,6 +5,6 @@ package chat.delta.rpc.types;
 public class Reactions {
   /** Unique reactions and their count, sorted in descending order. */
   public java.util.List<Reaction> reactions;
-  /** Map from a contact to it's reaction to message. */
+  /** Map from a contact to it's reaction to message. There is only a single reaction per contact, but this contains a list of reactions for historical reasons. */
   public java.util.Map<String, java.util.List<String>> reactionsByContact;
 }

src/main/java/chat/delta/rpc/types/Viewtype.java

@@ -14,7 +14,7 @@ public enum Viewtype {
   Gif,
 
   /**
-   * Message containing a sticker, similar to image. NB: When sending, the message viewtype may be changed to `Image` by some heuristics like checking for transparent pixels. Use `Message::force_sticker()` to disable them.
+   * Message containing a sticker, similar to image.
    * <p>
    * If possible, the ui should display the image without borders in a transparent way. A click on a sticker will offer to install the sticker set in some future.
    */

src/main/java/chat/delta/rpc/types/WebxdcMessageInfo.java

@@ -15,6 +15,10 @@ public class WebxdcMessageInfo {
   public String icon;
   /** True if full internet access should be granted to the app. */
   public Boolean internetAccess;
+  /** Define if the local user is the one who initially shared the webxdc application in the chat. */
+  public Boolean isAppSender;
+  /** Define if the app runs in a broadcasting context. */
+  public Boolean isBroadcast;
   /**
    * The name of the app.
    * <p>

src/main/java/com/b44t/messenger/DcMsg.java

@@ -59,8 +59,6 @@ public class DcMsg {
   public static final int DC_VIDEOCHATTYPE_UNKNOWN = 0;
   public static final int DC_VIDEOCHATTYPE_BASICWEBRTC = 1;
 
-  private static final String TAG = DcMsg.class.getSimpleName();
-
   public DcMsg(DcContext context, int viewtype) {
     msgCPtr = context.createMsgCPtr(viewtype);
   }
@@ -196,8 +194,6 @@ public class DcMsg {
 
   public native void setHtml(String text);
 
-  public native void forceSticker();
-
   public native void setFileAndDeduplicate(String file, String name, String filemime);
 
   public native void setDimension(int width, int height);

src/main/java/org/thoughtcrime/securesms/AllMediaActivity.java

@@ -4,7 +4,6 @@ import android.content.ComponentName;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.MenuItem;
-import android.view.ViewGroup;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.ActionBar;
@@ -12,21 +11,23 @@ import androidx.appcompat.view.ActionMode;
 import androidx.appcompat.widget.Toolbar;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentManager;
-import androidx.fragment.app.FragmentStatePagerAdapter;
+import androidx.fragment.app.FragmentActivity;
 import androidx.lifecycle.ViewModelProvider;
 import androidx.media3.session.MediaController;
 import androidx.media3.session.SessionCommand;
 import androidx.media3.session.SessionToken;
-import androidx.viewpager.widget.ViewPager;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+import androidx.viewpager2.widget.ViewPager2;
 import com.b44t.messenger.DcChat;
 import com.b44t.messenger.DcContext;
 import com.b44t.messenger.DcEvent;
 import com.b44t.messenger.DcMsg;
 import com.google.android.material.tabs.TabLayout;
+import com.google.android.material.tabs.TabLayoutMediator;
 import com.google.common.util.concurrent.ListenableFuture;
 import java.util.ArrayList;
 import org.thoughtcrime.securesms.components.audioplay.AudioPlaybackViewModel;
+import org.thoughtcrime.securesms.components.audioplay.ChatAudioQueueProvider;
 import org.thoughtcrime.securesms.connect.DcEventCenter;
 import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.service.AudioPlaybackService;
@@ -35,7 +36,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class AllMediaActivity extends PassphraseRequiredActionBarActivity
     implements DcEventCenter.DcEventDelegate {
-  private static final String TAG = AllMediaActivity.class.getSimpleName();
+  private static final String TAG = "AllMediaActivity";
 
   public static final String CHAT_ID_EXTRA = "chat_id";
   public static final String CONTACT_ID_EXTRA = "contact_id";
@@ -54,7 +55,6 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
       this.type3 = type3;
     }
   }
-  ;
 
   private DcContext dcContext;
   private int chatId;
@@ -63,7 +63,7 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
   private final ArrayList<TabData> tabs = new ArrayList<>();
   private Toolbar toolbar;
   private TabLayout tabLayout;
-  private ViewPager viewPager;
+  private ViewPager2 viewPager;
 
   private @Nullable MediaController mediaController;
   private ListenableFuture<MediaController> mediaControllerFuture;
@@ -97,8 +97,20 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
           isGlobalGallery() ? R.string.menu_all_media : R.string.apps_and_media);
     }
 
-    this.tabLayout.setupWithViewPager(viewPager);
-    this.viewPager.setAdapter(new AllMediaPagerAdapter(getSupportFragmentManager()));
+    AllMediaPagerAdapter adapter = new AllMediaPagerAdapter(this);
+    this.viewPager.setAdapter(adapter);
+    this.viewPager.registerOnPageChangeCallback(
+        new ViewPager2.OnPageChangeCallback() {
+          @Override
+          public void onPageSelected(int position) {
+            adapter.onPageChanged(position);
+          }
+        });
+    new TabLayoutMediator(
+            this.tabLayout,
+            this.viewPager,
+            (tab, position) -> tab.setText(getString(tabs.get(position).title)))
+        .attach();
     if (getIntent().getBooleanExtra(FORCE_GALLERY, false)) {
       this.viewPager.setCurrentItem(1, false);
     }
@@ -107,7 +119,9 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
     eventCenter.addObserver(DcContext.DC_EVENT_CHAT_MODIFIED, this);
     eventCenter.addObserver(DcContext.DC_EVENT_CONTACTS_CHANGED, this);
 
+    int accountId = DcHelper.getAccounts(this).getSelectedAccount().getAccountId();
     playbackViewModel = new ViewModelProvider(this).get(AudioPlaybackViewModel.class);
+    playbackViewModel.setQueueProvider(new ChatAudioQueueProvider(this, chatId, accountId));
     initializeMediaController();
   }
 
@@ -119,6 +133,7 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
       mediaController = null;
       playbackViewModel.setMediaController(null);
     }
+    playbackViewModel.setQueueProvider(null);
     super.onDestroy();
   }
 
@@ -182,31 +197,16 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
     return contactId == 0 && chatId == 0;
   }
 
-  private class AllMediaPagerAdapter extends FragmentStatePagerAdapter {
-    private Object currentFragment = null;
+  private class AllMediaPagerAdapter extends FragmentStateAdapter {
+    private int currentPosition = -1;
 
-    AllMediaPagerAdapter(FragmentManager fragmentManager) {
-      super(fragmentManager);
-    }
-
-    @Override
-    public void setPrimaryItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
-      super.setPrimaryItem(container, position, object);
-      if (currentFragment != null && currentFragment != object) {
-        ActionMode action = null;
-        if (currentFragment instanceof MessageSelectorFragment) {
-          action = ((MessageSelectorFragment) currentFragment).getActionMode();
-        }
-        if (action != null) {
-          action.finish();
-        }
-      }
-      currentFragment = object;
+    AllMediaPagerAdapter(FragmentActivity activity) {
+      super(activity);
     }
 
     @NonNull
     @Override
-    public Fragment getItem(int position) {
+    public Fragment createFragment(int position) {
       TabData data = tabs.get(position);
       Fragment fragment;
       Bundle args = new Bundle();
@@ -229,13 +229,24 @@ public class AllMediaActivity extends PassphraseRequiredActionBarActivity
     }
 
     @Override
-    public int getCount() {
+    public int getItemCount() {
       return tabs.size();
     }
 
-    @Override
-    public CharSequence getPageTitle(int position) {
-      return getString(tabs.get(position).title);
+    private void onPageChanged(int newPosition) {
+      if (currentPosition != -1 && currentPosition != newPosition) {
+        for (Fragment fragment : getSupportFragmentManager().getFragments()) {
+          if (!(fragment instanceof MessageSelectorFragment)) {
+            continue;
+          }
+
+          ActionMode action = ((MessageSelectorFragment) fragment).getActionMode();
+          if (action != null) {
+            action.finish();
+          }
+        }
+      }
+      currentPosition = newPosition;
     }
   }
 

src/main/java/org/thoughtcrime/securesms/ApplicationContext.java

@@ -40,7 +40,6 @@ import org.thoughtcrime.securesms.connect.KeepAliveService;
 import org.thoughtcrime.securesms.connect.NetworkStateReceiver;
 import org.thoughtcrime.securesms.crypto.DatabaseSecret;
 import org.thoughtcrime.securesms.crypto.DatabaseSecretProvider;
-import org.thoughtcrime.securesms.geolocation.DcLocationManager;
 import org.thoughtcrime.securesms.jobmanager.JobManager;
 import org.thoughtcrime.securesms.notifications.FcmReceiveService;
 import org.thoughtcrime.securesms.notifications.InChatSounds;
@@ -53,7 +52,7 @@ import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.webxdc.WebxdcGarbageCollectionWorker;
 
 public class ApplicationContext extends MultiDexApplication {
-  private static final String TAG = ApplicationContext.class.getSimpleName();
+  private static final String TAG = "ApplicationContext";
   private static final Object initLock = new Object();
   private static volatile boolean isInitialized = false;
 
@@ -61,7 +60,6 @@ public class ApplicationContext extends MultiDexApplication {
   private Rpc rpc;
   private DcContext dcContext;
 
-  private DcLocationManager dcLocationManager;
   private DcEventCenter eventCenter;
   private NotificationCenter notificationCenter;
   private JobManager jobManager;
@@ -126,15 +124,6 @@ public class ApplicationContext extends MultiDexApplication {
     }
   }
 
-  /**
-   * Get DcLocationManager instance, waiting for initialization if necessary. This method is
-   * thread-safe and will block until initialization is complete.
-   */
-  public DcLocationManager getLocationManager() {
-    ensureInitialized();
-    return dcLocationManager;
-  }
-
   /**
    * Get DcEventCenter instance, waiting for initialization if necessary. This method is thread-safe
    * and will block until initialization is complete.
@@ -229,7 +218,7 @@ public class ApplicationContext extends MultiDexApplication {
               Log.i(TAG, "DcAccounts created");
               rpc = new Rpc(new FFITransport(dcAccounts.getJsonrpcInstance()));
               Log.i(TAG, "Rpc created");
-              AccountManager.getInstance().migrateToDcAccounts(this);
+              AccountManager.getInstance().migrateToDcAccounts(this, dcAccounts);
 
               int[] allAccounts = dcAccounts.getAll();
               Log.i(TAG, "Number of profiles: " + allAccounts.length);
@@ -266,12 +255,6 @@ public class ApplicationContext extends MultiDexApplication {
                 // 2025-12-16: The setting was removed.
                 // Revert it to the default if it was changed in the past.
                 ac.setConfigInt("webxdc_realtime_enabled", 1);
-
-                // 2025-11-12: this is needed until core starts ignoring "delete_server_after" for
-                // chatmail
-                if (ac.isChatmail()) {
-                  ac.setConfig("delete_server_after", null); // reset
-                }
               }
               if (allAccounts.length == 0) {
                 try {
@@ -282,7 +265,6 @@ public class ApplicationContext extends MultiDexApplication {
               }
               dcContext = dcAccounts.getSelectedAccount();
               notificationCenter = new NotificationCenter(this);
-              dcLocationManager = new DcLocationManager(this, dcContext);
 
               isInitialized = true;
               initLock.notifyAll();

src/main/java/org/thoughtcrime/securesms/BaseActionBarActivity.java

@@ -20,7 +20,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public abstract class BaseActionBarActivity extends AppCompatActivity {
 
-  private static final String TAG = BaseActionBarActivity.class.getSimpleName();
+  private static final String TAG = "BaseActionBarActivity";
   protected DynamicTheme dynamicTheme = new DynamicTheme();
 
   protected void onPreCreate() {

src/main/java/org/thoughtcrime/securesms/BaseConversationListFragment.java

@@ -13,6 +13,7 @@ import android.content.Intent;
 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.AsyncTask;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -26,6 +27,8 @@ import androidx.core.content.pm.ShortcutInfoCompat;
 import androidx.core.content.pm.ShortcutManagerCompat;
 import androidx.core.graphics.drawable.IconCompat;
 import androidx.fragment.app.Fragment;
+import chat.delta.rpc.Rpc;
+import chat.delta.rpc.RpcException;
 import com.b44t.messenger.DcChat;
 import com.b44t.messenger.DcContact;
 import com.b44t.messenger.DcContext;
@@ -44,6 +47,7 @@ import org.thoughtcrime.securesms.util.task.SnackbarAsyncTask;
 import org.thoughtcrime.securesms.util.views.ProgressDialog;
 
 public abstract class BaseConversationListFragment extends Fragment implements ActionMode.Callback {
+  private static final String TAG = "BaseConversationListFragment";
   protected ActionMode actionMode;
   protected PulsingFloatingActionButton fab;
 
@@ -170,6 +174,17 @@ public abstract class BaseConversationListFragment extends Fragment implements A
     return false;
   }
 
+  private boolean areSomeSelectedChatsFresh() {
+    DcContext dcContext = DcHelper.getContext(requireActivity());
+    final Set<Long> selectedChats = getListAdapter().getBatchSelections();
+    for (long chatId : selectedChats) {
+      if (dcContext.getFreshMsgCount((int) chatId) > 0) {
+        return true;
+      }
+    }
+    return false;
+  }
+
   private void handlePinAllSelected() {
     final DcContext dcContext = DcHelper.getContext(requireActivity());
     final Set<Long> selectedConversations =
@@ -229,6 +244,26 @@ public abstract class BaseConversationListFragment extends Fragment implements A
     }
   }
 
+  private void handleMarkfreshSelected() {
+    final Set<Long> selectedConversations =
+        new HashSet<Long>(getListAdapter().getBatchSelections());
+
+    final Rpc rpc = DcHelper.getRpc(requireActivity());
+    try {
+      int accId = rpc.getSelectedAccountId();
+      for (long chatId : selectedConversations) {
+        rpc.markfreshChat(accId, (int) chatId);
+      }
+    } catch (RpcException e) {
+      Log.e(TAG, "RPC error", e);
+    }
+
+    if (actionMode != null) {
+      actionMode.finish();
+      actionMode = null;
+    }
+  }
+
   @SuppressLint("StaticFieldLeak")
   private void handleArchiveAllSelected() {
     final DcContext dcContext = DcHelper.getContext(requireActivity());
@@ -388,9 +423,18 @@ public abstract class BaseConversationListFragment extends Fragment implements A
                   .setIcon(IconCompat.createWithAdaptiveBitmap(avatar))
                   .setIntent(intent)
                   .build();
+
+          boolean success;
+          try {
+            success = ShortcutManagerCompat.requestPinShortcut(activity, shortcutInfoCompat, null);
+          } catch (Exception e) {
+            Log.e(TAG, "ErrAddToHomescreen: requestPinShortcut() failed", e);
+            success = false;
+          }
+          boolean finalSuccess = success;
           Util.runOnMain(
               () -> {
-                if (!ShortcutManagerCompat.requestPinShortcut(activity, shortcutInfoCompat, null)) {
+                if (!finalSuccess) {
                   Toast.makeText(
                           activity,
                           "ErrAddToHomescreen: requestPinShortcut() failed",
@@ -409,6 +453,7 @@ public abstract class BaseConversationListFragment extends Fragment implements A
     if (!isRelayingMessageContent(requireActivity())) {
       final int selectedCount = getListAdapter().getBatchSelections().size();
       menu.findItem(R.id.menu_add_to_home_screen).setVisible(selectedCount == 1);
+
       MenuItem archiveItem = menu.findItem(R.id.menu_archive_selected);
       if (offerToArchive()) {
         archiveItem.setIcon(R.drawable.ic_archive_white_24dp);
@@ -417,6 +462,7 @@ public abstract class BaseConversationListFragment extends Fragment implements A
         archiveItem.setIcon(R.drawable.ic_unarchive_white_24dp);
         archiveItem.setTitle(R.string.menu_unarchive_chat);
       }
+
       MenuItem pinItem = menu.findItem(R.id.menu_pin_selected);
       if (areSomeSelectedChatsUnpinned()) {
         pinItem.setIcon(R.drawable.ic_pin_white);
@@ -425,12 +471,17 @@ public abstract class BaseConversationListFragment extends Fragment implements A
         pinItem.setIcon(R.drawable.ic_unpin_white);
         pinItem.setTitle(R.string.unpin_chat);
       }
+
       MenuItem muteItem = menu.findItem(R.id.menu_mute_selected);
       if (areSomeSelectedChatsUnmuted()) {
         muteItem.setTitle(R.string.menu_mute);
       } else {
         muteItem.setTitle(R.string.menu_unmute);
       }
+
+      final boolean someAreFresh = areSomeSelectedChatsFresh();
+      menu.findItem(R.id.menu_marknoticed_selected).setVisible(someAreFresh);
+      menu.findItem(R.id.menu_markfresh_selected).setVisible(!someAreFresh);
     }
   }
 
@@ -484,6 +535,9 @@ public abstract class BaseConversationListFragment extends Fragment implements A
     } else if (itemId == R.id.menu_marknoticed_selected) {
       handleMarknoticedSelected();
       return true;
+    } else if (itemId == R.id.menu_markfresh_selected) {
+      handleMarkfreshSelected();
+      return true;
     } else if (itemId == R.id.menu_add_to_home_screen) {
       handleAddToHomeScreen();
       return true;

src/main/java/org/thoughtcrime/securesms/ContactSelectionActivity.java

@@ -29,7 +29,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
  */
 public abstract class ContactSelectionActivity extends PassphraseRequiredActionBarActivity
     implements ContactSelectionListFragment.OnContactSelectedListener {
-  private static final String TAG = ContactSelectionActivity.class.getSimpleName();
+  private static final String TAG = "ContactSelectionActivity";
 
   protected ContactSelectionListFragment contactsFragment;
 

src/main/java/org/thoughtcrime/securesms/ContactSelectionListFragment.java

@@ -67,7 +67,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
  */
 public class ContactSelectionListFragment extends Fragment
     implements LoaderManager.LoaderCallbacks<DcContactsLoader.Ret>, DcEventCenter.DcEventDelegate {
-  private static final String TAG = ContactSelectionListFragment.class.getSimpleName();
+  private static final String TAG = "ContactSelectionListFragment";
 
   public static final String MULTI_SELECT = "multi_select";
   public static final String SELECT_UNENCRYPTED_EXTRA = "select_unencrypted_extra";

src/main/java/org/thoughtcrime/securesms/ConversationActivity.java

@@ -101,6 +101,7 @@ import org.thoughtcrime.securesms.components.ScaleStableImageView;
 import org.thoughtcrime.securesms.components.SendButton;
 import org.thoughtcrime.securesms.components.audioplay.AudioPlaybackViewModel;
 import org.thoughtcrime.securesms.components.audioplay.AudioView;
+import org.thoughtcrime.securesms.components.audioplay.ChatAudioQueueProvider;
 import org.thoughtcrime.securesms.components.emoji.MediaKeyboard;
 import org.thoughtcrime.securesms.connect.AccountManager;
 import org.thoughtcrime.securesms.connect.DcEventCenter;
@@ -148,7 +149,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
         InputPanel.Listener,
         InputPanel.MediaListener,
         AudioView.OnActionListener {
-  private static final String TAG = ConversationActivity.class.getSimpleName();
+  private static final String TAG = "ConversationActivity";
 
   public static final String ACCOUNT_ID_EXTRA = "account_id";
   public static final String CHAT_ID_EXTRA = "chat_id";
@@ -199,7 +200,6 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
   private final boolean isSecureText = true;
   private boolean isDefaultSms = true;
   private boolean isSecurityInitialized = false;
-  private boolean successfulForwardingAttempt = false;
   private boolean isEditing = false;
   private boolean switchedProfile = false;
 
@@ -223,7 +223,9 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     initializeViews();
     initializeResources();
 
+    int accountId = DcHelper.getAccounts(this).getSelectedAccount().getAccountId();
     playbackViewModel = new ViewModelProvider(this).get(AudioPlaybackViewModel.class);
+    playbackViewModel.setQueueProvider(new ChatAudioQueueProvider(this, chatId, accountId));
     initializeMediaController();
 
     initializeSecurity(false, isDefaultSms)
@@ -413,6 +415,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       mediaController = null;
       playbackViewModel.setMediaController(null);
     }
+    playbackViewModel.setQueueProvider(null);
     super.onDestroy();
   }
 
@@ -632,12 +635,12 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       return true;
     } else if (itemId == R.id.menu_start_audio_call) {
       if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-        CallUtil.startAudioCall(context, chatId);
+        CallUtil.startAudioCall(this, chatId);
       }
       return true;
     } else if (itemId == R.id.menu_start_video_call) {
       if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-        CallUtil.startVideoCall(context, chatId);
+        CallUtil.startVideoCall(this, chatId);
       }
       return true;
     } else if (itemId == R.id.menu_all_media) {
@@ -672,8 +675,14 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
   }
 
   public void setDraftText(String txt) {
-    composeText.setText(txt);
-    composeText.setSelection(composeText.getText().length());
+    try {
+      if (rpc.canSend(rpc.getSelectedAccountId(), chatId)) {
+        composeText.setText(txt);
+        composeText.setSelection(composeText.getText().length());
+      }
+    } catch (RpcException e) {
+      Log.e(TAG, "Rpc error", e);
+    }
   }
 
   public void hideSoftKeyboard() {
@@ -836,20 +845,17 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     if (dcChat.isSelfTalk()) {
       SendRelayedMessageUtil.immediatelyRelay(this, chatId);
     } else {
-      String name = dcChat.getName();
-      if (!dcChat.isMultiUser()) {
-        int[] contactIds = dcContext.getChatContacts(chatId);
-        if (contactIds.length == 1 || contactIds.length == 2) {
-          name = dcContext.getContact(contactIds[0]).getDisplayName();
-        }
-      }
+      int messageIds[] = ShareUtil.getForwardedMessageIDs(this);
+      int messageCount = messageIds == null ? 0 : messageIds.length;
       new AlertDialog.Builder(this)
-          .setMessage(getString(R.string.ask_forward, name))
+          .setMessage(
+              getResources()
+                  .getQuantityString(
+                      R.plurals.ask_forward_messages, messageCount, messageCount, dcChat.getName()))
           .setPositiveButton(
-              R.string.ok,
+              R.string.forward,
               (dialogInterface, i) -> {
                 SendRelayedMessageUtil.immediatelyRelay(this, chatId);
-                successfulForwardingAttempt = true;
               })
           .setNegativeButton(R.string.cancel, (dialogInterface, i) -> finish())
           .setOnCancelListener(dialog -> finish())
@@ -1119,6 +1125,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     if (chatId == DcChat.DC_CHAT_NO_CHAT)
       throw new IllegalStateException("can't display a conversation for no chat.");
     dcChat = DcHelper.getContext(context).getChat(chatId);
+    attachmentTypeSelector = null;
     recipient = new Recipient(this, dcChat);
     glideRequests = GlideApp.with(this);
 
@@ -1267,6 +1274,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
 
     DcContext dcContext = DcHelper.getContext(context);
     final int currentChatId = dcChat.getId();
+    final boolean canSend = dcChat.canSend();
     Util.runOnAnyBackgroundThread(
         () -> {
           DcMsg msg = null;
@@ -1389,7 +1397,8 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
               }
             }
           } else {
-            dcContext.setDraft(currentChatId, msg);
+            // set or clear draft if user can't send in chat since they can't delete it otherwise
+            dcContext.setDraft(currentChatId, canSend ? msg : null);
           }
           future.set(currentChatId);
         });
@@ -1611,7 +1620,6 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       msg.setQuote(quote.get().getQuotedMsg());
     }
     msg.setFileAndDeduplicate(path, null, null);
-    msg.forceSticker();
     dcContext.sendMsg(chatId, msg);
   }
 

src/main/java/org/thoughtcrime/securesms/ConversationFragment.java

@@ -80,7 +80,7 @@ import org.thoughtcrime.securesms.util.views.ConversationAdaptiveActionsToolbar;
 
 @SuppressLint("StaticFieldLeak")
 public class ConversationFragment extends MessageSelectorFragment {
-  private static final String TAG = ConversationFragment.class.getSimpleName();
+  private static final String TAG = "ConversationFragment";
 
   private static final int SCROLL_ANIMATION_THRESHOLD = 50;
 
@@ -944,6 +944,8 @@ public class ConversationFragment extends MessageSelectorFragment {
           WebxdcActivity.openWebxdcActivity(
               getContext(), messageRecord.getParent(), messageRecord.getWebxdcHref());
         }
+      } else if (messageRecord.getInfoType() == DcMsg.DC_INFO_LOCATIONSTREAMING_ENABLED) {
+        WebxdcActivity.openMaps(getContext(), (int) chatId);
       } else if (messageRecord.getInfoType() == DcMsg.DC_INFO_CHAT_DESCRIPTION_CHANGED) {
         Intent intent = new Intent(getContext(), ProfileActivity.class);
         intent.putExtra(ProfileActivity.CHAT_ID_EXTRA, (int) chatId);

src/main/java/org/thoughtcrime/securesms/ConversationItem.java

@@ -24,6 +24,7 @@ import android.graphics.PorterDuff;
 import android.graphics.Rect;
 import android.os.Build;
 import android.text.Spannable;
+import android.text.Spanned;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.util.Log;
@@ -36,6 +37,7 @@ import androidx.annotation.DimenRes;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
+import androidx.core.view.ViewCompat;
 import chat.delta.rpc.RpcException;
 import chat.delta.rpc.types.CallInfo;
 import chat.delta.rpc.types.CallState;
@@ -44,6 +46,7 @@ import chat.delta.rpc.types.VcardContact;
 import com.b44t.messenger.DcChat;
 import com.b44t.messenger.DcContact;
 import com.b44t.messenger.DcMsg;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
 import org.thoughtcrime.securesms.calls.CallCoordinator;
@@ -72,6 +75,7 @@ import org.thoughtcrime.securesms.mms.VcardSlide;
 import org.thoughtcrime.securesms.reactions.ReactionsConversationView;
 import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.util.Linkifier;
+import org.thoughtcrime.securesms.util.LongClickCopySpan;
 import org.thoughtcrime.securesms.util.LongClickMovementMethod;
 import org.thoughtcrime.securesms.util.MarkdownUtil;
 import org.thoughtcrime.securesms.util.MediaUtil;
@@ -86,7 +90,7 @@ import org.thoughtcrime.securesms.util.views.Stub;
  * @author Moxie Marlinspike
  */
 public class ConversationItem extends BaseConversationItem {
-  private static final String TAG = ConversationItem.class.getSimpleName();
+  private static final String TAG = "ConversationItem";
 
   private static final Rect SWIPE_RECT = new Rect();
 
@@ -120,6 +124,9 @@ public class ConversationItem extends BaseConversationItem {
   private Stub<CallItemView> callViewStub;
   private @Nullable EventListener eventListener;
 
+  // IDs of accessibility actions registered via ViewCompat.addAccessibilityAction
+  private final List<Integer> linkActionIds = new ArrayList<>();
+
   private int measureCalls;
 
   private int incomingBubbleColor;
@@ -424,6 +431,12 @@ public class ConversationItem extends BaseConversationItem {
     bodyText.setClickable(false);
     bodyText.setFocusable(false);
 
+    // Remove any link actions registered for the previous message binding
+    for (int id : linkActionIds) {
+      ViewCompat.removeAccessibilityAction(this, id);
+    }
+    linkActionIds.clear();
+
     String subject = messageRecord.getSubject();
     String text = messageRecord.getText();
 
@@ -433,12 +446,33 @@ public class ConversationItem extends BaseConversationItem {
     if (messageRecord.getType() == DcMsg.DC_MSG_CALL || text.isEmpty()) {
       bodyText.setVisibility(View.GONE);
     } else {
-      Spannable spannable = (Spannable) MarkdownUtil.toMarkdown(context, text);
+      Spannable spannable = MarkdownUtil.toMarkdown(context, text);
       if (batchSelected.isEmpty()) {
-        spannable = Linkifier.linkify(spannable);
+        Linkifier.linkify(spannable);
       }
       bodyText.setText(spannable);
       bodyText.setVisibility(View.VISIBLE);
+
+      // Register a TalkBack "Actions" entry for each link in the message
+      Spanned spanned = (Spanned) spannable;
+      final TextView tv = bodyText;
+      for (LongClickCopySpan span :
+          spanned.getSpans(0, spanned.length(), LongClickCopySpan.class)) {
+        int start = spanned.getSpanStart(span);
+        int end = spanned.getSpanEnd(span);
+        if (start >= 0 && end > start && end <= spanned.length()) {
+          String linkText = spanned.subSequence(start, end).toString();
+          String label = context.getString(R.string.open_link, linkText);
+          linkActionIds.add(
+              ViewCompat.addAccessibilityAction(
+                  this,
+                  label,
+                  (v, args) -> {
+                    span.onClick(tv);
+                    return true;
+                  }));
+        }
+      }
     }
 
     int downloadState = messageRecord.getDownloadState();
@@ -1062,7 +1096,18 @@ public class ConversationItem extends BaseConversationItem {
           if (!messageRecord.isOutgoing() && callInfo.state instanceof CallState.Alerting) {
             int callId = messageRecord.getId();
             CallCoordinator coordinator = CallCoordinator.getInstance(context);
-            coordinator.showIncomingCallScreen(callId);
+
+            if (coordinator.hasActiveCall()) {
+              coordinator.showIncomingCallScreen(callId);
+            } else {
+              if (callInfo.sdpOffer == null) {
+                Toast.makeText(context, R.string.error, Toast.LENGTH_SHORT).show();
+                return;
+              }
+              int accId = dcContext.getAccountId();
+              coordinator.handleIncomingCallFromConversation(
+                  accId, callId, callInfo.sdpOffer, callInfo.hasVideo);
+            }
           } else {
             if (callInfo.hasVideo) {
               CallUtil.startVideoCall(getContext(), chatId);

src/main/java/org/thoughtcrime/securesms/ConversationListActivity.java

@@ -69,6 +69,7 @@ import org.thoughtcrime.securesms.components.SearchToolbar;
 import org.thoughtcrime.securesms.connect.AccountManager;
 import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.connect.DirectShareUtil;
+import org.thoughtcrime.securesms.geolocation.LocationStreamingService;
 import org.thoughtcrime.securesms.mms.GlideApp;
 import org.thoughtcrime.securesms.permissions.Permissions;
 import org.thoughtcrime.securesms.providers.PersistentBlobProvider;
@@ -90,7 +91,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class ConversationListActivity extends PassphraseRequiredActionBarActivity
     implements ConversationListFragment.ConversationSelectedListener {
-  private static final String TAG = ConversationListActivity.class.getSimpleName();
+  private static final String TAG = "ConversationListActivity";
   private static final String OPENPGP4FPR = "openpgp4fpr";
   private static final String NDK_ARCH_WARNED = "ndk_arch_warned";
   public static final String CLEAR_NOTIFICATIONS = "clear_notifications";
@@ -449,6 +450,9 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
     refreshTitle();
     invalidateOptionsMenu();
     DirectShareUtil.triggerRefreshDirectShare(this);
+    if (DcHelper.getContext(this).isSendingLocationsToChat(0)) {
+      LocationStreamingService.ensureRunning(this);
+    }
   }
 
   @Override
@@ -603,6 +607,13 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
     }
   }
 
+  public void handleQrFromSearch(String rawQrString) {
+    qrData = rawQrString;
+    new QrCodeHandler(this)
+        .handleQrData(
+            rawQrString, SecurejoinSource.Scan, SecurejoinUiPath.QrIcon, relayLockLauncher);
+  }
+
   private void handleResetRelaying() {
     resetRelayingMessageContent(this);
     refreshTitle();
@@ -688,7 +699,11 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
           // Util.copy(inputStream, new FileOutputStream(outputFile));
           // msg.setFile(outputFile, "image/jpeg");
 
-          msg.setText(getString(R.string.update_2_46ac, "https://arcanechat.me/#contribute", "https://i.delta.chat/#0A45953086F0C166D3BAF1D4BB2025496E4C2704&x=MVPi07rQBEmHO4FRb3brpwDe&j=n8mkKqu42WAKKUCx1bQOVh23&s=AM1YCd_2hKuiSiTEb-2177On&a=arcanechat%40arcanechat.me&n=ArcaneChat&b=ArcaneChat+Channel"));
+          msg.setText(
+              getString(
+                  R.string.update_2_46ac,
+                  "https://arcanechat.me/#contribute",
+                  "https://i.delta.chat/#0A45953086F0C166D3BAF1D4BB2025496E4C2704&x=MVPi07rQBEmHO4FRb3brpwDe&j=n8mkKqu42WAKKUCx1bQOVh23&s=AM1YCd_2hKuiSiTEb-2177On&a=arcanechat%40arcanechat.me&n=ArcaneChat&b=ArcaneChat+Channel"));
         }
         dcContext.addDeviceMsg(deviceMsgLabel, msg);
 

src/main/java/org/thoughtcrime/securesms/ConversationListFragment.java

@@ -23,7 +23,6 @@ import android.content.Context;
 import android.os.AsyncTask;
 import android.os.Build;
 import android.os.Bundle;
-import android.text.TextUtils;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -56,12 +55,11 @@ public class ConversationListFragment extends BaseConversationListFragment
   public static final String ARCHIVE = "archive";
   public static final String RELOAD_LIST = "reload_list";
 
-  private static final String TAG = ConversationListFragment.class.getSimpleName();
+  private static final String TAG = "ConversationListFragment";
 
   private RecyclerView list;
   private View emptyState;
   private TextView emptySearch;
-  private final String queryFilter = "";
   private boolean archive;
   private Timer reloadTimer;
   private boolean chatlistJustLoaded;
@@ -285,22 +283,17 @@ public class ConversationListFragment extends BaseConversationListFragment
       Log.w(TAG, "Ignoring call to loadChatlist()");
       return;
     }
-    DcChatlist chatlist =
-        DcHelper.getContext(context)
-            .getChatlist(listflags, queryFilter.isEmpty() ? null : queryFilter, 0);
+    long startMs = System.currentTimeMillis();
+    DcChatlist chatlist = DcHelper.getContext(context).getChatlist(listflags, null, 0);
+    Log.i(TAG, "⏰ getChatlist(): " + (System.currentTimeMillis() - startMs) + "ms");
 
     Util.runOnMain(
         () -> {
-          if (chatlist.getCnt() <= 0 && TextUtils.isEmpty(queryFilter)) {
+          if (chatlist.getCnt() <= 0) {
             list.setVisibility(View.INVISIBLE);
             emptyState.setVisibility(View.VISIBLE);
             emptySearch.setVisibility(View.INVISIBLE);
             fab.startPulse(3 * 1000);
-          } else if (chatlist.getCnt() <= 0 && !TextUtils.isEmpty(queryFilter)) {
-            list.setVisibility(View.INVISIBLE);
-            emptyState.setVisibility(View.GONE);
-            emptySearch.setVisibility(View.VISIBLE);
-            emptySearch.setText(getString(R.string.search_no_result_for_x, queryFilter));
           } else {
             list.setVisibility(View.VISIBLE);
             emptyState.setVisibility(View.GONE);

src/main/java/org/thoughtcrime/securesms/ConversationListItem.java

@@ -44,9 +44,11 @@ import org.thoughtcrime.securesms.components.AvatarView;
 import org.thoughtcrime.securesms.components.DeliveryStatusView;
 import org.thoughtcrime.securesms.components.FromTextView;
 import org.thoughtcrime.securesms.connect.DcHelper;
+import org.thoughtcrime.securesms.contacts.avatars.GeneratedContactPhoto;
 import org.thoughtcrime.securesms.database.model.ThreadRecord;
 import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.recipients.Recipient;
+import org.thoughtcrime.securesms.search.QrInviteData;
 import org.thoughtcrime.securesms.util.DateUtils;
 import org.thoughtcrime.securesms.util.ThemeUtil;
 import org.thoughtcrime.securesms.util.Util;
@@ -222,6 +224,40 @@ public class ConversationListItem extends RelativeLayout
     avatar.setSeenRecently(false);
   }
 
+  public void bind(@NonNull QrInviteData inviteData, @NonNull GlideRequests glideRequests) {
+    this.selectedThreads = Collections.emptySet();
+
+    fromView.setText(inviteData.getDisplayTitle());
+    fromView.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
+    subjectView.setVisibility(VISIBLE);
+    subjectView.setText(inviteData.getDisplaySubtitle());
+    subjectView.setTypeface(LIGHT_TYPEFACE);
+    subjectView.setTextColor(
+        ThemeUtil.getThemedColor(getContext(), R.attr.conversation_list_item_subject_color));
+
+    dateView.setText("");
+    dateView.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
+    archivedBadgeView.setVisibility(GONE);
+    requestBadgeView.setVisibility(GONE);
+    unreadIndicator.setVisibility(GONE);
+    deliveryStatusIndicator.setNone();
+
+    setBatchState(false);
+
+    if (inviteData.getContactId() > 0) {
+      DcContext dcContext = DcHelper.getContext(getContext());
+      DcContact contact = dcContext.getContact(inviteData.getContactId());
+      Recipient recipient = new Recipient(getContext(), contact);
+      avatar.setAvatar(glideRequests, recipient, false);
+      avatar.setSeenRecently(contact.wasSeenRecently());
+    } else {
+      avatar.setImageDrawable(
+          new GeneratedContactPhoto("+")
+              .asDrawable(getContext(), ThemeUtil.getDummyContactColor(getContext())));
+      avatar.setSeenRecently(false);
+    }
+  }
+
   @Override
   public void unbind() {}
 

src/main/java/org/thoughtcrime/securesms/CreateProfileActivity.java

@@ -42,7 +42,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 @SuppressLint("StaticFieldLeak")
 public class CreateProfileActivity extends BaseActionBarActivity {
 
-  private static final String TAG = CreateProfileActivity.class.getSimpleName();
+  private static final String TAG = "CreateProfileActivity";
 
   private static final int REQUEST_CODE_AVATAR = 1;
 

src/main/java/org/thoughtcrime/securesms/EphemeralMessagesDialog.java

@@ -15,7 +15,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class EphemeralMessagesDialog {
 
-  private static final String TAG = EphemeralMessagesDialog.class.getSimpleName();
+  private static final String TAG = "EphemeralMessagesDialog";
 
   public static void show(
       final Context context,

src/main/java/org/thoughtcrime/securesms/GroupCreateActivity.java

@@ -46,7 +46,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 public class GroupCreateActivity extends PassphraseRequiredActionBarActivity
     implements ItemClickListener {
 
-  private static final String TAG = GroupCreateActivity.class.getSimpleName();
+  private static final String TAG = "GroupCreateActivity";
   public static final String EDIT_GROUP_CHAT_ID = "edit_group_chat_id";
   public static final String CREATE_BROADCAST = "create_broadcast";
   public static final String UNENCRYPTED = "unencrypted";
@@ -307,8 +307,7 @@ public class GroupCreateActivity extends PassphraseRequiredActionBarActivity
 
   private boolean showGroupNameEmptyToast(String groupName) {
     if (groupName == null) {
-      Toast.makeText(this, getString(R.string.group_please_enter_group_name), Toast.LENGTH_LONG)
-          .show();
+      Toast.makeText(this, getString(R.string.please_enter_chat_name), Toast.LENGTH_LONG).show();
       return true;
     }
     return false;

src/main/java/org/thoughtcrime/securesms/InstantOnboardingActivity.java

@@ -65,7 +65,7 @@ import org.thoughtcrime.securesms.util.views.ProgressDialog;
 public class InstantOnboardingActivity extends BaseActionBarActivity
     implements DcEventCenter.DcEventDelegate {
 
-  private static final String TAG = InstantOnboardingActivity.class.getSimpleName();
+  private static final String TAG = "InstantOnboardingActivity";
   private static final String DCACCOUNT = "dcaccount";
   private static final String DCLOGIN = "dclogin";
   private static final String INSTANCES_URL = "https://chatmail.at/relays";

src/main/java/org/thoughtcrime/securesms/LogViewActivity.java

@@ -18,7 +18,7 @@ import org.thoughtcrime.securesms.util.FileProviderUtil;
 
 public class LogViewActivity extends BaseActionBarActivity {
 
-  private static final String TAG = LogViewActivity.class.getSimpleName();
+  private static final String TAG = "LogViewActivity";
 
   LogViewFragment logViewFragment;
 

src/main/java/org/thoughtcrime/securesms/MediaPreviewActivity.java

@@ -33,14 +33,13 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.view.Window;
 import android.view.WindowManager;
-import android.widget.FrameLayout;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AlertDialog;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.content.Loader;
-import androidx.viewpager.widget.PagerAdapter;
-import androidx.viewpager.widget.ViewPager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.viewpager2.widget.ViewPager2;
 import com.b44t.messenger.DcChat;
 import com.b44t.messenger.DcContext;
 import com.b44t.messenger.DcMediaGalleryElement;
@@ -48,7 +47,6 @@ import com.b44t.messenger.DcMsg;
 import java.io.IOException;
 import java.util.WeakHashMap;
 import org.thoughtcrime.securesms.components.MediaView;
-import org.thoughtcrime.securesms.components.viewpager.ExtendedOnPageChangedListener;
 import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.database.Address;
 import org.thoughtcrime.securesms.database.loaders.PagingMediaLoader;
@@ -69,7 +67,7 @@ import org.thoughtcrime.securesms.util.Util;
 public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
     implements RecipientModifiedListener, LoaderManager.LoaderCallbacks<DcMediaGalleryElement> {
 
-  private static final String TAG = MediaPreviewActivity.class.getSimpleName();
+  private static final String TAG = "MediaPreviewActivity";
 
   public static final String ACTIVITY_TITLE_EXTRA = "activity_title";
   public static final String EDIT_AVATAR_CHAT_ID = "avatar_for_chat_id";
@@ -88,7 +86,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
   @Nullable private DcMsg messageRecord;
   private DcContext dcContext;
   private MediaItem initialMedia;
-  private ViewPager mediaPager;
+  private ViewPager2 mediaPager;
   private Recipient conversationRecipient;
   private boolean leftIsRecent;
 
@@ -190,7 +188,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
   private void initializeViews() {
     mediaPager = findViewById(R.id.media_pager);
     mediaPager.setOffscreenPageLimit(1);
-    mediaPager.addOnPageChangeListener(new ViewPagerListener());
+    mediaPager.registerOnPageChangeCallback(new ViewPagerListener());
   }
 
   private void initializeResources() {
@@ -260,10 +258,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
 
   private int cleanupMedia() {
     int restartItem = mediaPager.getCurrentItem();
-
-    mediaPager.removeAllViews();
     mediaPager.setAdapter(null);
-
     return restartItem;
   }
 
@@ -483,22 +478,25 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
       @SuppressWarnings("ConstantConditions")
       DcMediaPagerAdapter adapter =
           new DcMediaPagerAdapter(this, GlideApp.with(this), getWindow(), data, leftIsRecent);
-      mediaPager.setAdapter(adapter);
       adapter.setActive(true);
+      mediaPager.setAdapter(adapter);
 
-      if (restartItem < 0) mediaPager.setCurrentItem(data.getPosition());
-      else mediaPager.setCurrentItem(restartItem);
+      if (restartItem < 0) mediaPager.setCurrentItem(data.getPosition(), false);
+      else mediaPager.setCurrentItem(restartItem, false);
     }
   }
 
   @Override
   public void onLoaderReset(Loader<DcMediaGalleryElement> loader) {}
 
-  private class ViewPagerListener extends ExtendedOnPageChangedListener {
+  private class ViewPagerListener extends ViewPager2.OnPageChangeCallback {
+
+    private Integer currentPage = null;
 
     @Override
     public void onPageSelected(int position) {
-      super.onPageSelected(position);
+      if (currentPage != null && currentPage != position) onPageUnselected(currentPage);
+      currentPage = position;
 
       MediaItemAdapter adapter = (MediaItemAdapter) mediaPager.getAdapter();
 
@@ -510,8 +508,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
       }
     }
 
-    @Override
-    public void onPageUnselected(int position) {
+    private void onPageUnselected(int position) {
       MediaItemAdapter adapter = (MediaItemAdapter) mediaPager.getAdapter();
 
       if (adapter != null) {
@@ -526,7 +523,9 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
     }
   }
 
-  private static class SingleItemPagerAdapter extends PagerAdapter implements MediaItemAdapter {
+  private static class SingleItemPagerAdapter
+      extends RecyclerView.Adapter<SingleItemPagerAdapter.MediaViewHolder>
+      implements MediaItemAdapter {
 
     private final GlideRequests glideRequests;
     private final Window window;
@@ -555,37 +554,29 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
     }
 
     @Override
-    public int getCount() {
+    public int getItemCount() {
       return 1;
     }
 
+    @NonNull
     @Override
-    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
-      return view == object;
+    public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+      return new MediaViewHolder(inflater.inflate(R.layout.media_view_page, parent, false));
     }
 
     @Override
-    public @NonNull Object instantiateItem(@NonNull ViewGroup container, int position) {
-      View itemView = inflater.inflate(R.layout.media_view_page, container, false);
-      MediaView mediaView = itemView.findViewById(R.id.media_view);
-
+    public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
       try {
-        mediaView.set(glideRequests, window, uri, name, mediaType, size, true);
+        holder.mediaView.set(glideRequests, window, uri, name, mediaType, size, true);
       } catch (IOException e) {
         Log.w(TAG, e);
       }
-
-      container.addView(itemView);
-
-      return itemView;
     }
 
     @Override
-    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
-      MediaView mediaView = ((FrameLayout) object).findViewById(R.id.media_view);
-      mediaView.cleanup();
-
-      container.removeView((FrameLayout) object);
+    public void onViewRecycled(@NonNull MediaViewHolder holder) {
+      super.onViewRecycled(holder);
+      holder.mediaView.cleanup();
     }
 
     @Override
@@ -595,9 +586,20 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
 
     @Override
     public void pause(int position) {}
+
+    static class MediaViewHolder extends RecyclerView.ViewHolder {
+      final MediaView mediaView;
+
+      MediaViewHolder(@NonNull View itemView) {
+        super(itemView);
+        mediaView = itemView.findViewById(R.id.media_view);
+      }
+    }
   }
 
-  private static class DcMediaPagerAdapter extends PagerAdapter implements MediaItemAdapter {
+  private static class DcMediaPagerAdapter
+      extends RecyclerView.Adapter<DcMediaPagerAdapter.MediaViewHolder>
+      implements MediaItemAdapter {
 
     private final WeakHashMap<Integer, MediaView> mediaViews = new WeakHashMap<>();
 
@@ -630,21 +632,20 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
     }
 
     @Override
-    public int getCount() {
+    public int getItemCount() {
       if (!active) return 0;
       else return gallery.getCount();
     }
 
+    @NonNull
     @Override
-    public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
-      return view == object;
+    public MediaViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+      View itemView = LayoutInflater.from(context).inflate(R.layout.media_view_page, parent, false);
+      return new MediaViewHolder(itemView);
     }
 
     @Override
-    public @NonNull Object instantiateItem(@NonNull ViewGroup container, int position) {
-      View itemView =
-          LayoutInflater.from(context).inflate(R.layout.media_view_page, container, false);
-      MediaView mediaView = itemView.findViewById(R.id.media_view);
+    public void onBindViewHolder(@NonNull MediaViewHolder holder, int position) {
       boolean autoplay = position == autoPlayPosition;
       int cursorPosition = getCursorPosition(position);
 
@@ -656,7 +657,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
 
       try {
         //noinspection ConstantConditions
-        mediaView.set(
+        holder.mediaView.set(
             glideRequests,
             window,
             Uri.fromFile(msg.getFileAsFile()),
@@ -668,19 +669,17 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
         Log.w(TAG, e);
       }
 
-      mediaViews.put(position, mediaView);
-      container.addView(itemView);
-
-      return itemView;
+      mediaViews.put(position, holder.mediaView);
     }
 
     @Override
-    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
-      MediaView mediaView = ((FrameLayout) object).findViewById(R.id.media_view);
-      mediaView.cleanup();
-
-      mediaViews.remove(position);
-      container.removeView((FrameLayout) object);
+    public void onViewRecycled(@NonNull MediaViewHolder holder) {
+      super.onViewRecycled(holder);
+      int pos = holder.getBindingAdapterPosition();
+      if (pos != RecyclerView.NO_POSITION) {
+        mediaViews.remove(pos);
+      }
+      holder.mediaView.cleanup();
     }
 
     public MediaItem getMediaItemFor(int position) {
@@ -710,6 +709,15 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
       if (leftIsRecent) return position;
       else return gallery.getCount() - 1 - position;
     }
+
+    static class MediaViewHolder extends RecyclerView.ViewHolder {
+      final MediaView mediaView;
+
+      MediaViewHolder(@NonNull View itemView) {
+        super(itemView);
+        mediaView = itemView.findViewById(R.id.media_view);
+      }
+    }
   }
 
   private static class MediaItem {
@@ -742,7 +750,7 @@ public class MediaPreviewActivity extends PassphraseRequiredActionBarActivity
     }
   }
 
-  interface MediaItemAdapter {
+  private interface MediaItemAdapter {
     MediaItem getMediaItemFor(int position);
 
     void pause(int position);

src/main/java/org/thoughtcrime/securesms/NewConversationActivity.java

@@ -41,7 +41,7 @@ import org.thoughtcrime.securesms.qr.QrCodeHandler;
  */
 public class NewConversationActivity extends ContactSelectionActivity {
 
-  private static final String TAG = NewConversationActivity.class.getSimpleName();
+  private static final String TAG = "NewConversationActivity";
 
   @Override
   public void onCreate(Bundle bundle, boolean ready) {

src/main/java/org/thoughtcrime/securesms/PassphraseRequiredActionBarActivity.java

@@ -7,7 +7,7 @@ import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.service.GenericForegroundService;
 
 public abstract class PassphraseRequiredActionBarActivity extends BaseActionBarActivity {
-  private static final String TAG = PassphraseRequiredActionBarActivity.class.getSimpleName();
+  private static final String TAG = "PassphraseRequiredActionBarActivity";
 
   @Override
   protected final void onCreate(Bundle savedInstanceState) {

src/main/java/org/thoughtcrime/securesms/ProfileAdapter.java

@@ -29,7 +29,7 @@ import org.thoughtcrime.securesms.mms.GlideRequests;
 import org.thoughtcrime.securesms.util.Util;
 
 public class ProfileAdapter extends RecyclerView.Adapter {
-  private static final String TAG = ProfileAdapter.class.getSimpleName();
+  private static final String TAG = "ProfileAdapter";
 
   public static final int ITEM_AVATAR = 10;
   public static final int ITEM_DIVIDER = 20;

src/main/java/org/thoughtcrime/securesms/ProfileFragment.java

@@ -38,7 +38,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 public class ProfileFragment extends Fragment
     implements ProfileAdapter.ItemClickListener, DcEventCenter.DcEventDelegate {
 
-  private static final String TAG = ProfileFragment.class.getSimpleName();
+  private static final String TAG = "ProfileFragment";
   public static final String CHAT_ID_EXTRA = "chat_id";
   public static final String CONTACT_ID_EXTRA = "contact_id";
 

src/main/java/org/thoughtcrime/securesms/ResolveMediaTask.java

@@ -17,7 +17,7 @@ import org.thoughtcrime.securesms.providers.PersistentBlobProvider;
 
 public class ResolveMediaTask extends AsyncTask<Uri, Void, Uri> {
 
-  private static final String TAG = ResolveMediaTask.class.getSimpleName();
+  private static final String TAG = "ResolveMediaTask";
 
   interface OnMediaResolvedListener {
     void onMediaResolved(Uri uri);

src/main/java/org/thoughtcrime/securesms/ShareActivity.java

@@ -47,7 +47,7 @@ import org.thoughtcrime.securesms.util.ShareUtil;
  */
 public class ShareActivity extends PassphraseRequiredActionBarActivity
     implements ResolveMediaTask.OnMediaResolvedListener {
-  private static final String TAG = ShareActivity.class.getSimpleName();
+  private static final String TAG = "ShareActivity";
 
   public static final String EXTRA_ACC_ID = "acc_id";
   public static final String EXTRA_CHAT_ID = "chat_id";

src/main/java/org/thoughtcrime/securesms/ShareLocationDialog.java

@@ -18,22 +18,19 @@ public class ShareLocationDialog {
           switch (which) {
             default:
             case 0:
-              shareLocationUnit = 5 * 60;
-              break;
-            case 1:
               shareLocationUnit = 30 * 60;
               break;
-            case 2:
+            case 1:
               shareLocationUnit = 60 * 60;
               break;
-            case 3:
+            case 2:
               shareLocationUnit = 2 * 60 * 60;
               break;
-            case 4:
+            case 3:
               shareLocationUnit = 6 * 60 * 60;
               break;
-            case 5:
-              shareLocationUnit = 12 * 60 * 60;
+            case 4:
+              shareLocationUnit = 24 * 60 * 60;
               break;
           }
 

src/main/java/org/thoughtcrime/securesms/WebViewActivity.java

@@ -32,7 +32,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class WebViewActivity extends PassphraseRequiredActionBarActivity
     implements SearchView.OnQueryTextListener, WebView.FindListener {
-  private static final String TAG = WebViewActivity.class.getSimpleName();
+  private static final String TAG = "WebViewActivity";
   // Regex to extract the host from a URL for IDN conversion.
   private static final Pattern URL_PATTERN =
       Pattern.compile("^((?:[a-zA-Z0-9]+://)?)([^/?#]+)(.*)$");

src/main/java/org/thoughtcrime/securesms/WebxdcActivity.java

@@ -59,7 +59,7 @@ import org.thoughtcrime.securesms.util.MediaUtil;
 import org.thoughtcrime.securesms.util.Util;
 
 public class WebxdcActivity extends WebViewActivity implements DcEventCenter.DcEventDelegate {
-  private static final String TAG = WebxdcActivity.class.getSimpleName();
+  private static final String TAG = "WebxdcActivity";
   private static final String EXTRA_ACCOUNT_ID = "accountId";
   private static final String EXTRA_APP_MSG_ID = "appMessageId";
   private static final String EXTRA_HIDE_ACTION_BAR = "hideActionBar";
@@ -240,6 +240,7 @@ public class WebxdcActivity extends WebViewActivity implements DcEventCenter.DcE
 
     WebSettings webSettings = webView.getSettings();
     webSettings.setJavaScriptEnabled(true);
+    webSettings.setMediaPlaybackRequiresUserGesture(false);
     webSettings.setAllowFileAccess(false);
     webSettings.setBlockNetworkLoads(!internetAccess);
     webSettings.setAllowContentAccess(false);
@@ -542,11 +543,25 @@ public class WebxdcActivity extends WebViewActivity implements DcEventCenter.DcE
               .build();
 
       Toast.makeText(context, R.string.one_moment, Toast.LENGTH_SHORT).show();
-      if (!ShortcutManagerCompat.requestPinShortcut(context, shortcutInfoCompat, null)) {
-        Toast.makeText(
-                context, "ErrAddToHomescreen: requestPinShortcut() failed", Toast.LENGTH_LONG)
-            .show();
-      }
+      Util.runOnAnyBackgroundThread(
+          () -> {
+            boolean success;
+            try {
+              success = ShortcutManagerCompat.requestPinShortcut(context, shortcutInfoCompat, null);
+            } catch (Exception e) {
+              Log.e(TAG, "ErrAddToHomescreen: requestPinShortcut() failed", e);
+              success = false;
+            }
+            if (!success) {
+              Util.runOnMain(
+                  () ->
+                      Toast.makeText(
+                              context,
+                              "ErrAddToHomescreen: requestPinShortcut() failed",
+                              Toast.LENGTH_LONG)
+                          .show());
+            }
+          });
     } catch (Exception e) {
       Toast.makeText(context, "ErrAddToHomescreen: " + e, Toast.LENGTH_LONG).show();
     }

src/main/java/org/thoughtcrime/securesms/WebxdcStoreActivity.java

@@ -30,7 +30,7 @@ import org.thoughtcrime.securesms.util.Util;
 import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class WebxdcStoreActivity extends PassphraseRequiredActionBarActivity {
-  private static final String TAG = WebxdcStoreActivity.class.getSimpleName();
+  private static final String TAG = "WebxdcStoreActivity";
 
   private DcContext dcContext;
   private Rpc rpc;

src/main/java/org/thoughtcrime/securesms/WelcomeActivity.java

@@ -48,7 +48,7 @@ public class WelcomeActivity extends BaseActionBarActivity
     implements DcEventCenter.DcEventDelegate {
   public static final String BACKUP_QR_EXTRA = "backup_qr_extra";
   public static final int PICK_BACKUP = 20574;
-  private static final String TAG = WelcomeActivity.class.getSimpleName();
+  private static final String TAG = "WelcomeActivity";
   public static final String TMP_BACKUP_FILE = "tmp-backup-file";
 
   private ProgressDialog progressDialog = null;

src/main/java/org/thoughtcrime/securesms/accounts/AccountSelectionListFragment.java

@@ -41,7 +41,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class AccountSelectionListFragment extends DialogFragment
     implements DcEventCenter.DcEventDelegate {
-  private static final String TAG = AccountSelectionListFragment.class.getSimpleName();
+  private static final String TAG = "AccountSelectionListFragment";
   private static final String ARG_SELECT_ONLY = "select_only";
   private RecyclerView recyclerView;
   private AccountSelectionListAdapter adapter;
@@ -157,6 +157,12 @@ public class AccountSelectionListFragment extends DialogFragment
       onSetTag(accountId);
     } else if (itemId == R.id.menu_move_to_top) {
       onMoveToTop(accountId);
+    } else if (itemId == R.id.menu_mark_all_as_read) {
+      try {
+        DcHelper.getRpc(requireActivity()).marknoticedAllChats(accountId);
+      } catch (RpcException e) {
+        Log.e(TAG, "Error calling rpc.marknoticedAllChats()", e);
+      }
     }
   }
 

src/main/java/org/thoughtcrime/securesms/audio/AudioCodec.java

@@ -15,7 +15,7 @@ import org.thoughtcrime.securesms.util.Prefs;
 
 public class AudioCodec {
 
-  private static final String TAG = AudioCodec.class.getSimpleName();
+  private static final String TAG = "AudioCodec";
 
   private static final int SAMPLE_RATE_BALANCED = 44100;
   private static final int BIT_RATE_BALANCED = 32000;
@@ -196,7 +196,7 @@ public class AudioCodec {
                 setFinished();
               }
             },
-            AudioCodec.class.getSimpleName())
+            "AudioCodec")
         .start();
   }
 

src/main/java/org/thoughtcrime/securesms/audio/AudioRecorder.java

@@ -18,7 +18,7 @@ import org.thoughtcrime.securesms.util.Util;
 
 public class AudioRecorder {
 
-  private static final String TAG = AudioRecorder.class.getSimpleName();
+  private static final String TAG = "AudioRecorder";
 
   private static final ExecutorService executor = ThreadUtil.newDynamicSingleThreadedExecutor();
 

src/main/java/org/thoughtcrime/securesms/calls/AudioDevicePickerDialog.java

@@ -20,7 +20,7 @@ import org.thoughtcrime.securesms.R;
 /** Bottom sheet dialog for selecting audio output device */
 @RequiresApi(Build.VERSION_CODES.O)
 public class AudioDevicePickerDialog extends BottomSheetDialog {
-  private static final String TAG = AudioDevicePickerDialog.class.getSimpleName();
+  private static final String TAG = "AudioDevicePickerDialog";
 
   public interface OnDeviceSelectedListener {
     void onDeviceSelected(CallEndpointCompat endpoint);

src/main/java/org/thoughtcrime/securesms/calls/CallActivity.java

@@ -6,11 +6,13 @@ import android.app.PictureInPictureParams;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
+import android.net.Uri;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.PowerManager;
+import android.provider.Settings;
 import android.util.Log;
 import android.util.Rational;
 import android.view.View;
@@ -22,7 +24,9 @@ import android.widget.TextView;
 import android.widget.Toast;
 import androidx.activity.OnBackPressedCallback;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.cardview.widget.CardView;
 import androidx.constraintlayout.widget.ConstraintLayout;
@@ -51,9 +55,10 @@ import org.webrtc.VideoTrack;
 @RequiresApi(api = Build.VERSION_CODES.O)
 public class CallActivity extends AppCompatActivity {
 
-  private static final String TAG = CallActivity.class.getSimpleName();
+  private static final String TAG = "CallActivity";
   private static final int MIC_PERMISSION_REQUEST_CODE = 1001;
   private static final int CAMERA_PERMISSION_REQUEST_CODE = 1002;
+  private static final int CAMERA_MID_CALL_PERMISSION_REQUEST_CODE = 1003;
 
   public static final String ACTION_ANSWER_CALL = BuildConfig.APPLICATION_ID + ".ANSWER_CALL";
   public static final String ACTION_DECLINE_CALL = BuildConfig.APPLICATION_ID + ".DECLINE_CALL";
@@ -99,6 +104,7 @@ public class CallActivity extends AppCompatActivity {
   private boolean awaitingPermissionResult = false;
   private boolean pausedWhileAwaitingPermission = false;
   private boolean intentHandled = false;
+  private boolean doNotAutoFinish = false;
 
   @Override
   protected void onCreate(Bundle savedInstanceState) {
@@ -227,6 +233,7 @@ public class CallActivity extends AppCompatActivity {
       Log.d(TAG, "Resuming existing call");
     } else if (!coordinator.isIncomingCall()) {
       Log.d(TAG, "Starting outgoing call");
+      coordinator.ensureServiceStarted();
       viewModel.startOutgoingCallWhenReady();
     }
   }
@@ -374,6 +381,18 @@ public class CallActivity extends AppCompatActivity {
     videoButton.setOnClickListener(
         v -> {
           if (viewModel != null) {
+            Boolean currentEnabled = viewModel.getVideoEnabled().getValue();
+            boolean needToEnable = currentEnabled == null || !currentEnabled;
+
+            if (needToEnable && !hasCameraPermission()) {
+              awaitingPermissionResult = true;
+              ActivityCompat.requestPermissions(
+                  this,
+                  new String[] {Manifest.permission.CAMERA},
+                  CAMERA_MID_CALL_PERMISSION_REQUEST_CODE);
+              return;
+            }
+
             viewModel.toggleVideo();
           }
         });
@@ -634,7 +653,7 @@ public class CallActivity extends AppCompatActivity {
         new Handler(Looper.getMainLooper())
             .postDelayed(
                 () -> {
-                  if (!isFinishing()) {
+                  if (!isFinishing() && !doNotAutoFinish) {
                     finish();
                   }
                 },
@@ -643,7 +662,9 @@ public class CallActivity extends AppCompatActivity {
 
       case ENDED:
         statusText.setText(R.string.call_ended);
-        finish();
+        if (!doNotAutoFinish) {
+          finish();
+        }
         break;
 
       case ERROR:
@@ -656,7 +677,7 @@ public class CallActivity extends AppCompatActivity {
         new Handler(Looper.getMainLooper())
             .postDelayed(
                 () -> {
-                  if (!isFinishing()) {
+                  if (!isFinishing() && !doNotAutoFinish) {
                     finish();
                   }
                 },
@@ -842,16 +863,28 @@ public class CallActivity extends AppCompatActivity {
   }
 
   private void handleMicPermissionDenied() {
-    Toast.makeText(this, R.string.call_requires_mic_permission, Toast.LENGTH_LONG).show();
-
     CallCoordinator coordinator = CallCoordinator.getInstance(getApplication());
-    if (coordinator.hasActiveCall()
-        && coordinator.isIncomingCall()
-        && !coordinator.hasOngoingCall()) {
-      coordinator.declineCall();
+
+    if (coordinator.hasActiveCall() && !coordinator.hasOngoingCall()) {
+      if (coordinator.isIncomingCall()) {
+        coordinator.declineCall();
+      } else {
+        coordinator.hangUp();
+      }
     }
 
-    finish();
+    if (!shouldShowRequestPermissionRationale(Manifest.permission.RECORD_AUDIO)) {
+      doNotAutoFinish = true;
+      showPermissionSettingsDialog(
+          getString(R.string.call_requires_mic_permission),
+          () -> {
+            doNotAutoFinish = false;
+            if (!isFinishing()) finish();
+          });
+    } else {
+      Toast.makeText(this, R.string.call_requires_mic_permission, Toast.LENGTH_LONG).show();
+      finish();
+    }
   }
 
   private void proceedAfterPermissions() {
@@ -878,6 +911,22 @@ public class CallActivity extends AppCompatActivity {
 
     CallCoordinator coordinator = CallCoordinator.getInstance(getApplication());
 
+    if (requestCode == CAMERA_MID_CALL_PERMISSION_REQUEST_CODE) {
+      boolean cameraGranted =
+          grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
+
+      if (cameraGranted && viewModel != null) {
+        viewModel.toggleVideo();
+      } else {
+        if (!shouldShowRequestPermissionRationale(Manifest.permission.CAMERA)) {
+          showPermissionSettingsDialog(getString(R.string.call_requires_camera_permission), null);
+        } else {
+          Toast.makeText(this, R.string.call_requires_camera_permission, Toast.LENGTH_SHORT).show();
+        }
+      }
+      return;
+    }
+
     if (requestCode == MIC_PERMISSION_REQUEST_CODE) {
       boolean micGranted =
           grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED;
@@ -893,9 +942,17 @@ public class CallActivity extends AppCompatActivity {
 
       if (!cameraGranted) {
         Log.w(TAG, "Camera permission denied, switching to audio-only");
-        Toast.makeText(
-                this, "Starting audio-only call (camera permission denied)", Toast.LENGTH_SHORT)
-            .show();
+        if (!shouldShowRequestPermissionRationale(Manifest.permission.CAMERA)) {
+          Toast.makeText(
+                  this,
+                  "Camera permission permanently denied. Enable in app settings for video calls.",
+                  Toast.LENGTH_LONG)
+              .show();
+        } else {
+          Toast.makeText(
+                  this, "Starting audio-only call (camera permission denied)", Toast.LENGTH_SHORT)
+              .show();
+        }
         coordinator.setStartsWithVideo(false);
       }
     }
@@ -903,6 +960,34 @@ public class CallActivity extends AppCompatActivity {
     proceedAfterPermissions();
   }
 
+  private void showPermissionSettingsDialog(String message, @Nullable Runnable onDismissAction) {
+    if (isFinishing() || isDestroyed()) {
+      if (onDismissAction != null) onDismissAction.run();
+      return;
+    }
+
+    new AlertDialog.Builder(this)
+        .setTitle("Permission Required")
+        .setMessage(message)
+        .setPositiveButton(
+            "Open Settings",
+            (dialog, which) -> {
+              Intent intent =
+                  new Intent(
+                      Settings.ACTION_APPLICATION_DETAILS_SETTINGS,
+                      Uri.fromParts("package", getPackageName(), null));
+              startActivity(intent);
+            })
+        .setNegativeButton(android.R.string.cancel, null)
+        .setOnDismissListener(
+            dialog -> {
+              if (onDismissAction != null) {
+                onDismissAction.run();
+              }
+            })
+        .show();
+  }
+
   // Picture-in-Picture
 
   @Override

src/main/java/org/thoughtcrime/securesms/calls/CallCoordinator.java

@@ -23,6 +23,7 @@ import android.os.Looper;
 import android.telecom.DisconnectCause;
 import android.util.Log;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
 import androidx.core.app.NotificationManagerCompat;
 import androidx.core.content.ContextCompat;
@@ -32,6 +33,7 @@ import androidx.core.telecom.CallControlScope;
 import androidx.core.telecom.CallEndpointCompat;
 import androidx.core.telecom.CallException;
 import androidx.core.telecom.CallsManager;
+import androidx.core.util.Pair;
 import androidx.lifecycle.FlowLiveDataConversions;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MediatorLiveData;
@@ -63,7 +65,7 @@ import org.webrtc.VideoTrack;
 
 @RequiresApi(api = Build.VERSION_CODES.O)
 public class CallCoordinator implements DcEventCenter.DcEventDelegate {
-  private static final String TAG = CallCoordinator.class.getSimpleName();
+  private static final String TAG = "CallCoordinator";
 
   // Notification channels
   private static final String CHANNEL_ID_INCOMING = "voip_incoming_calls";
@@ -97,6 +99,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
   private final MutableLiveData<Boolean> outgoingCallPlaced = new MutableLiveData<>(false);
   private final MutableLiveData<Boolean> answeredElsewhere = new MutableLiveData<>(false);
   private final MutableLiveData<Boolean> isFrontCamera = new MutableLiveData<>(true);
+  private final MutableLiveData<Boolean> mediaCaptureReady = new MutableLiveData<>(false);
 
   // Audio Routing Support
   private final MediatorLiveData<CallEndpointCompat> currentAudioEndpoint =
@@ -119,6 +122,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
   private String pendingOfferSdp;
   private boolean hasNotifiedBackend = false;
   private boolean hasAutoSelectedEarpiece = false;
+  private boolean pendingMediaCapture = false;
 
   private CallControlScope activeCallControlScope;
   private CallViewModel activeCallViewModel;
@@ -215,7 +219,8 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
                   calleeName = "Unknown";
                 }
 
-                showOrUpdateOngoingNotification("Calling " + calleeName + "...");
+                showOrUpdateOngoingNotification(
+                    appContext.getString(R.string.calling_person, calleeName));
               }
 
               // Initialize call
@@ -227,6 +232,11 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
                 mainHandler.removeCallbacks(outgoingRingtoneRunnable);
                 mainHandler.postDelayed(outgoingRingtoneRunnable, 1500);
               }
+
+              if (pendingMediaCapture) {
+                pendingMediaCapture = false;
+                callService.startMediaCapture();
+              }
             }
           }
 
@@ -335,6 +345,10 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     return isFrontCamera;
   }
 
+  public LiveData<Boolean> getMediaCaptureReady() {
+    return mediaCaptureReady;
+  }
+
   // State Update Methods (CallService)
 
   public void updateConnectionState(PeerConnection.PeerConnectionState state) {
@@ -374,6 +388,11 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     isFrontCamera.postValue(front);
   }
 
+  public void updateMediaCaptureReady(boolean ready) {
+    Log.d(TAG, "updateMediaCaptureReady: " + ready);
+    mediaCaptureReady.postValue(ready);
+  }
+
   public void reportError(String error) {
     Log.e(TAG, "reportError: " + error);
     errorMessage.postValue(error);
@@ -386,7 +405,8 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     if (callService != null) {
       callService.startMediaCapture();
     } else {
-      Log.w(TAG, "Cannot start media capture, service not ready");
+      Log.d(TAG, "Service not ready, deferring media capture");
+      pendingMediaCapture = true;
     }
   }
 
@@ -402,6 +422,15 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
       callService.stopRingtone();
     }
 
+    // Promote the service to foreground immediately. Waiting until onIncomingCallAccepted
+    // on executor pool thread is too late on stricter OEM.
+    //
+    // Do not cancel() but use showOrUpdateOngoingNotification to replace incoming
+    // notification without a gap.
+    String callerName = displayName.getValue();
+    if (callerName == null) callerName = "Unknown";
+    showOrUpdateOngoingNotification(appContext.getString(R.string.call_with, callerName));
+
     // Notify Android system with CallControlScope
     CallControlScope scope = activeCallControlScope;
     if (scope != null) {
@@ -425,8 +454,6 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
             }
           });
     }
-
-    notificationManager.cancel(NOTIFICATION_ID_CALL);
   }
 
   public void answerWebRTC() {
@@ -643,11 +670,17 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
   public synchronized void setVideoEnabled(boolean enabled) {
     Log.d(TAG, "setVideoEnabled: " + enabled);
 
+    if (callService != null) {
+      boolean success = callService.setVideoEnabled(enabled);
+      if (!success && enabled) {
+        enabled = false;
+        reportError("Camera unavailable");
+      }
+    }
+
     localVideoEnabled.postValue(enabled);
 
     if (callService != null) {
-      callService.setVideoEnabled(enabled);
-
       callService.sendMutedState(Boolean.TRUE.equals(localAudioEnabled.getValue()), enabled);
     }
   }
@@ -867,32 +900,15 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
       int accId, int callId, String offerSdp, boolean startsWithVideo) {
     Log.d(TAG, "onIncomingCall: accId=" + accId + ", callId=" + callId);
 
-    if (hasActiveCall()) {
-      Log.w(TAG, "Already have an active call, ignoring incoming call");
-      return;
-    }
+    Pair<DcChat, String> result = setupIncomingCallState(accId, callId, offerSdp, startsWithVideo);
+    if (result == null) return;
 
-    resetLiveDataForNewCall();
-
-    this.activeAccId = accId;
-    this.activeCallId = callId;
-    this.isIncomingCall = true;
-    this.startsWithVideo = startsWithVideo;
-    this.pendingOfferSdp = offerSdp;
-
-    // Get caller info
-    DcContext dcContext = ApplicationContext.getDcAccounts().getAccount(accId);
-    int chatId = dcContext.getMsg(callId).getChatId();
-    this.activeChatId = chatId;
-    DcChat dcChat = dcContext.getChat(chatId);
-    String callerName = getNameFromChat(dcChat);
+    DcChat dcChat = result.first;
+    String callerName = result.second;
     Icon callerIcon = getIconFromChat(this.appContext, dcChat);
 
-    displayName.postValue(callerName);
     displayIcon.postValue(callerIcon);
 
-    this.preferredStartingEndpoint = getPreferredStartingEndpoint(startsWithVideo);
-
     // Add to CallsManager
     CallAttributesCompat callAttributes = createCallAttributes(callerName, callId, true);
     addCallToTelecom(callAttributes, callerName, callerIcon);
@@ -903,6 +919,37 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     startAndBindService();
   }
 
+  public synchronized void handleIncomingCallFromConversation(
+      int accId, int callId, String offerSdp, boolean hasVideo) {
+    Log.d(TAG, "handleIncomingCallFromConversation: accId=" + accId + ", callId=" + callId);
+
+    if (offerSdp == null || offerSdp.isEmpty()) {
+      Log.e(TAG, "Cannot start incoming call: no SDP offer");
+      return;
+    }
+
+    Pair<DcChat, String> result = setupIncomingCallState(accId, callId, offerSdp, hasVideo);
+    if (result == null) return;
+
+    DcChat dcChat = result.first;
+    String callerName = result.second;
+
+    new Thread(
+            () -> {
+              Icon callerIcon = getIconFromChat(this.appContext, dcChat);
+              displayIcon.postValue(callerIcon);
+            })
+        .start();
+
+    // Add to CallsManager
+    CallAttributesCompat callAttributes = createCallAttributes(callerName, callId, true);
+    addCallToTelecom(callAttributes, callerName, null);
+
+    startAndBindService();
+
+    launchCallActivity();
+  }
+
   private synchronized void onIncomingCallAccepted(int callId, boolean fromThisDevice) {
     Log.d(TAG, "onIncomingCallAccepted: callId=" + callId + ", fromThisDevice=" + fromThisDevice);
 
@@ -921,7 +968,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
       callerName = "Unknown";
     }
 
-    showOrUpdateOngoingNotification("Call with " + callerName);
+    showOrUpdateOngoingNotification(appContext.getString(R.string.call_with, callerName));
   }
 
   private synchronized void onCallAnsweredOnOtherDevice() {
@@ -1008,7 +1055,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     if (calleeName == null) {
       calleeName = "Unknown";
     }
-    showOrUpdateOngoingNotification("Call with " + calleeName);
+    showOrUpdateOngoingNotification(appContext.getString(R.string.call_with, calleeName));
   }
 
   private synchronized void onCallEnded(int accId, int callId) {
@@ -1101,6 +1148,14 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
       return;
     }
 
+    if (callService != null) {
+      try {
+        callService.stopForegroundAndDismiss();
+      } catch (Exception e) {
+        Log.w(TAG, "stopForegroundAndDismiss failed", e);
+      }
+    }
+
     // Clear state
     this.activeAccId = null;
     this.activeCallId = null;
@@ -1113,6 +1168,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     this.pendingOfferSdp = null;
     this.hasNotifiedBackend = false;
     this.hasAutoSelectedEarpiece = false;
+    this.pendingMediaCapture = false;
 
     mainHandler.removeCallbacks(outgoingRingtoneRunnable);
 
@@ -1178,6 +1234,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
   private void resetLiveDataForNewCall() {
     connectionState.postValue(PeerConnection.PeerConnectionState.NEW);
     answeredElsewhere.postValue(false); // clearLiveData() must not reset answeredElsewhere
+    mediaCaptureReady.postValue(false);
     clearLiveData();
   }
 
@@ -1193,6 +1250,7 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     outgoingCallPlaced.postValue(false);
     currentAudioEndpoint.postValue(null);
     availableAudioEndpoints.postValue(null);
+    mediaCaptureReady.postValue(false);
   }
 
   public synchronized void initiateOutgoingCall(int accId, int chatId, boolean startsWithVideo) {
@@ -1203,16 +1261,6 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
       return;
     }
 
-    // Check microphone permission
-    if (!hasMicrophonePermission()) {
-      Log.e(TAG, "Microphone permission not granted");
-
-      Intent intent = new Intent(appContext, CallActivity.class);
-      intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP);
-      appContext.startActivity(intent);
-      return;
-    }
-
     resetLiveDataForNewCall();
 
     this.activeCallId = -1; // Placeholder call ID for Intent
@@ -1238,7 +1286,9 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
 
     this.preferredStartingEndpoint = getPreferredStartingEndpoint(startsWithVideo);
 
-    startAndBindService();
+    if (hasMicrophonePermission()) {
+      startAndBindService();
+    }
 
     launchCallActivity();
   }
@@ -1270,6 +1320,43 @@ public class CallCoordinator implements DcEventCenter.DcEventDelegate {
     addCallToTelecom(callAttributes, calleeName, calleeIcon);
   }
 
+  @Nullable
+  private Pair<DcChat, String> setupIncomingCallState(
+      int accId, int callId, String offerSdp, boolean startsWithVideo) {
+    if (hasActiveCall()) {
+      Log.w(TAG, "Already have an active call, ignoring incoming call");
+      return null;
+    }
+
+    resetLiveDataForNewCall();
+
+    this.activeAccId = accId;
+    this.activeCallId = callId;
+    this.isIncomingCall = true;
+    this.startsWithVideo = startsWithVideo;
+    this.pendingOfferSdp = offerSdp;
+
+    DcContext dcContext = ApplicationContext.getDcAccounts().getAccount(accId);
+    int chatId = dcContext.getMsg(callId).getChatId();
+    this.activeChatId = chatId;
+    DcChat dcChat = dcContext.getChat(chatId);
+    String callerName = getNameFromChat(dcChat);
+
+    displayName.postValue(callerName);
+
+    this.preferredStartingEndpoint = getPreferredStartingEndpoint(startsWithVideo);
+
+    return new Pair<>(dcChat, callerName);
+  }
+
+  public synchronized void ensureServiceStarted() {
+    if (isServiceBound || !hasActiveCall()) {
+      return;
+    }
+    Log.d(TAG, "Starting service after permission grant");
+    startAndBindService();
+  }
+
   private void addCallToTelecom(
       CallAttributesCompat callAttributes, String displayName, Icon icon) {
     try {

src/main/java/org/thoughtcrime/securesms/calls/CallService.java

@@ -4,6 +4,7 @@ import android.app.Notification;
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.ServiceInfo;
 import android.media.AudioAttributes;
 import android.media.AudioFocusRequest;
 import android.media.AudioManager;
@@ -13,7 +14,9 @@ import android.media.ToneGenerator;
 import android.net.Uri;
 import android.os.Binder;
 import android.os.Build;
+import android.os.Handler;
 import android.os.IBinder;
+import android.os.Looper;
 import android.util.Log;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
@@ -33,7 +36,7 @@ import org.webrtc.VideoTrack;
 @RequiresApi(api = Build.VERSION_CODES.O)
 public class CallService extends Service implements WebRTCClient.Callbacks {
 
-  private static final String TAG = CallService.class.getSimpleName();
+  private static final String TAG = "CallService";
 
   private final IBinder binder = new LocalBinder();
 
@@ -123,13 +126,13 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
   }
 
   /**
-   * Start camera/microphone capture
+   * Start media capture
    *
    * <p>Must be called when app is in foreground. Called by coordinator when ViewModel/Activity is
    * ready.
    */
   public void startMediaCapture() {
-    Log.d(TAG, "startMediaCapture (Camera/Microphone)");
+    Log.d(TAG, "startMediaCapture");
 
     if (webRTCClient != null && webRTCClient.hasLocalMediaStream()) {
       Log.w(TAG, "Media already initialized, skipping");
@@ -150,7 +153,7 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
 
     boolean startsWithVideo = callCoordinator.isStartsWithVideo();
 
-    Log.d(TAG, "Creating media stream with video: " + startsWithVideo);
+    Log.d(TAG, "Creating media stream");
 
     mediaStreamManager.createMediaStream(
         new MediaStreamManager.Callback() {
@@ -160,31 +163,22 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
 
             webRTCClient.setLocalMediaStream(stream);
 
-            callCoordinator.updateFrontCamera(mediaStreamManager.isFrontCamera());
-
-            callCoordinator.setVideoEnabled(startsWithVideo);
-
             if (!stream.videoTracks.isEmpty()) {
               VideoTrack localTrack = stream.videoTracks.get(0);
               callCoordinator.updateLocalVideoTrack(localTrack);
-            } else {
-              Log.w(TAG, "No video track in stream, call will be audio-only");
-              if (startsWithVideo) {
-                callCoordinator.reportError("Camera unavailable, using audio only");
-              }
-              callCoordinator.setVideoEnabled(false);
             }
 
+            callCoordinator.setVideoEnabled(startsWithVideo);
+
+            callCoordinator.updateMediaCaptureReady(true);
+
             Log.d(TAG, "Media capture complete, ready for call");
           }
 
           @Override
           public void onError(String error) {
             Log.e(TAG, "Failed to setup media: " + error);
-            if (startsWithVideo) {
-              callCoordinator.reportError("Camera/microphone error: " + error);
-            }
-            callCoordinator.setVideoEnabled(false);
+            callCoordinator.reportError("Camera/microphone error: " + error);
           }
         });
   }
@@ -392,12 +386,30 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
     }
   }
 
-  public void setVideoEnabled(boolean enabled) {
+  public boolean setVideoEnabled(boolean enabled) {
     Log.d(TAG, "setVideoEnabled: " + enabled);
 
-    if (webRTCClient != null) {
-      webRTCClient.setVideoEnabled(enabled);
+    if (enabled) {
+      if (mediaStreamManager != null) {
+        boolean captureReady = mediaStreamManager.startVideoCapture();
+        if (!captureReady) {
+          Log.w(TAG, "Failed to start video capture");
+          return false;
+        }
+        callCoordinator.updateFrontCamera(mediaStreamManager.isFrontCamera());
+      }
+      if (webRTCClient != null) {
+        webRTCClient.setVideoEnabled(true);
+      }
+    } else {
+      if (webRTCClient != null) {
+        webRTCClient.setVideoEnabled(false);
+      }
+      if (mediaStreamManager != null) {
+        mediaStreamManager.stopVideoCapture();
+      }
     }
+    return true;
   }
 
   public void sendMutedState(boolean audioEnabled, boolean videoEnabled) {
@@ -432,6 +444,12 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
 
     disposeWebRTC();
 
+    try {
+      stopForeground(STOP_FOREGROUND_REMOVE);
+    } catch (Exception e) {
+      Log.w(TAG, "stopForeground failed", e);
+    }
+
     stopService();
   }
 
@@ -494,13 +512,44 @@ public class CallService extends Service implements WebRTCClient.Callbacks {
   // Foreground Notification
 
   public void startForegroundWithNotification(int id, Notification notification) {
-    Log.d(TAG, "Starting foreground with notification id: " + id);
-    startForeground(id, notification);
+    // Always run on main thread
+    if (Looper.myLooper() != Looper.getMainLooper()) {
+      new Handler(Looper.getMainLooper())
+          .post(() -> startForegroundWithNotification(id, notification));
+      return;
+    }
+
+    Log.d(TAG, "Starting call FGS with notification id: " + id);
+    try {
+      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+        startForeground(id, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_PHONE_CALL);
+      } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+        int types =
+            ServiceInfo.FOREGROUND_SERVICE_TYPE_MICROPHONE
+                | ServiceInfo.FOREGROUND_SERVICE_TYPE_CAMERA;
+        startForeground(id, notification, types);
+      } else {
+        startForeground(id, notification);
+      }
+    } catch (Exception e) {
+      Log.e(TAG, "startForeground failed", e);
+      if (callCoordinator != null) {
+        callCoordinator.reportError("Failed to activate call FGS: " + e.getMessage());
+      }
+    }
   }
 
   public void stopForegroundAndDismiss() {
-    Log.d(TAG, "Stopping foreground and dismissing notification");
-    stopForeground(STOP_FOREGROUND_REMOVE);
+    if (Looper.myLooper() != Looper.getMainLooper()) {
+      new Handler(Looper.getMainLooper()).post(this::stopForegroundAndDismiss);
+      return;
+    }
+    Log.d(TAG, "Stopping call FGS and dismissing notification");
+    try {
+      stopForeground(STOP_FOREGROUND_REMOVE);
+    } catch (Exception e) {
+      Log.w(TAG, "stopForeground failed", e);
+    }
   }
 
   // Cleanup

src/main/java/org/thoughtcrime/securesms/calls/CallUtil.java

@@ -5,13 +5,18 @@ import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.Icon;
+import android.net.ConnectivityManager;
+import android.net.Network;
+import android.net.NetworkCapabilities;
 import android.os.Build;
 import android.util.Log;
 import android.widget.Toast;
 import androidx.annotation.Nullable;
 import androidx.annotation.RequiresApi;
+import androidx.appcompat.app.AlertDialog;
 import androidx.core.telecom.CallEndpointCompat;
 import com.b44t.messenger.DcChat;
+import com.b44t.messenger.DcContext;
 import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.connect.DcHelper;
@@ -21,7 +26,7 @@ import org.thoughtcrime.securesms.recipients.Recipient;
 import org.thoughtcrime.securesms.util.BitmapUtil;
 
 public class CallUtil {
-  private static final String TAG = CallUtil.class.getSimpleName();
+  private static final String TAG = "CallUtil";
 
   @RequiresApi(api = Build.VERSION_CODES.O)
   public static void startAudioCall(Context context, int chatId) {
@@ -52,8 +57,22 @@ public class CallUtil {
       return;
     }
 
-    int accId = DcHelper.getContext(context).getAccountId();
-    coordinator.initiateOutgoingCall(accId, chatId, startsWithVideo);
+    Runnable proceedWithCall =
+        () -> {
+          int accId = DcHelper.getContext(context).getAccountId();
+          coordinator.initiateOutgoingCall(accId, chatId, startsWithVideo);
+        };
+
+    if (!isNetworkAvailable(context)) {
+      new AlertDialog.Builder(context)
+          .setMessage(context.getString(R.string.call_requires_connection))
+          .setPositiveButton(R.string.perm_continue, (dialog, which) -> proceedWithCall.run())
+          .setNegativeButton(android.R.string.cancel, null)
+          .show();
+      return;
+    }
+
+    proceedWithCall.run();
   }
 
   @Nullable
@@ -138,4 +157,24 @@ public class CallUtil {
     }
     return iconRes;
   }
+
+  @RequiresApi(api = Build.VERSION_CODES.M)
+  private static boolean isNetworkAvailable(Context context) {
+    ConnectivityManager manager =
+        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+    if (manager == null) return true;
+
+    boolean networkAvailable = false;
+    Network network = manager.getActiveNetwork();
+    if (network != null) {
+      NetworkCapabilities caps = manager.getNetworkCapabilities(network);
+      networkAvailable =
+          caps != null && caps.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
+    }
+
+    boolean serverConnected =
+        DcHelper.getContext(context).getConnectivity() >= DcContext.DC_CONNECTIVITY_WORKING;
+
+    return networkAvailable || serverConnected;
+  }
 }

src/main/java/org/thoughtcrime/securesms/calls/CallViewModel.java

@@ -20,7 +20,7 @@ import org.webrtc.VideoTrack;
 @RequiresApi(api = Build.VERSION_CODES.O)
 public class CallViewModel extends AndroidViewModel {
 
-  private static final String TAG = CallViewModel.class.getSimpleName();
+  private static final String TAG = "CallViewModel";
 
   private final CallCoordinator callCoordinator;
 
@@ -46,8 +46,8 @@ public class CallViewModel extends AndroidViewModel {
   private final MediatorLiveData<CallState> callState;
 
   // Observer References for one-time observe
-  private Observer<VideoTrack> answerCallObserver;
-  private Observer<VideoTrack> startOutgoingCallObserver;
+  private Observer<Boolean> answerCallObserver;
+  private Observer<Boolean> startOutgoingCallObserver;
 
   private final AtomicBoolean hasCallEnded = new AtomicBoolean(false);
 
@@ -211,25 +211,24 @@ public class CallViewModel extends AndroidViewModel {
     callCoordinator.startMediaCapture();
 
     // Create one-time observer
-    LiveData<VideoTrack> localTrack = callCoordinator.getLocalVideoTrack();
+    LiveData<Boolean> mediaReady = callCoordinator.getMediaCaptureReady();
 
     answerCallObserver =
-        new Observer<VideoTrack>() {
+        new Observer<Boolean>() {
           @Override
-          public void onChanged(VideoTrack videoTrack) {
-            if (videoTrack != null) {
-              // Media is ready, remove observer
-              localTrack.removeObserver(this);
+          public void onChanged(Boolean ready) {
+            if (Boolean.TRUE.equals(ready)) {
+              mediaReady.removeObserver(this);
               answerCallObserver = null;
 
-              Log.d(TAG, "Local video ready, answering call (WebRTC)");
+              Log.d(TAG, "Media capture ready, answering call (WebRTC)");
 
               callCoordinator.answerWebRTC();
             }
           }
         };
 
-    localTrack.observeForever(answerCallObserver);
+    mediaReady.observeForever(answerCallObserver);
   }
 
   /** Start outgoing call with media capture Called by Activity for outgoing calls */
@@ -244,30 +243,28 @@ public class CallViewModel extends AndroidViewModel {
     callCoordinator.startMediaCapture();
 
     // Create one-time observer
-    LiveData<VideoTrack> localTrack = callCoordinator.getLocalVideoTrack();
-    VideoTrack currentValue = localTrack.getValue();
+    LiveData<Boolean> mediaReady = callCoordinator.getMediaCaptureReady();
 
-    if (currentValue != null) {
+    if (Boolean.TRUE.equals(mediaReady.getValue())) {
       Log.d(TAG, "Media already ready, starting call immediately");
       callCoordinator.startOutgoingCall();
     } else {
       startOutgoingCallObserver =
-          new Observer<VideoTrack>() {
+          new Observer<Boolean>() {
             @Override
-            public void onChanged(VideoTrack videoTrack) {
-              if (videoTrack != null) {
-                // Media is ready, remove observer
-                localTrack.removeObserver(this);
+            public void onChanged(Boolean ready) {
+              if (Boolean.TRUE.equals(ready)) {
+                mediaReady.removeObserver(this);
                 startOutgoingCallObserver = null;
 
-                Log.d(TAG, "Local video ready, starting outgoing call");
+                Log.d(TAG, "Media capture ready, starting outgoing call");
 
                 callCoordinator.startOutgoingCall();
               }
             }
           };
 
-      localTrack.observeForever(startOutgoingCallObserver);
+      mediaReady.observeForever(startOutgoingCallObserver);
     }
   }
 
@@ -460,12 +457,12 @@ public class CallViewModel extends AndroidViewModel {
     Log.d(TAG, "CallViewModel cleared");
 
     if (answerCallObserver != null) {
-      callCoordinator.getLocalVideoTrack().removeObserver(answerCallObserver);
+      callCoordinator.getMediaCaptureReady().removeObserver(answerCallObserver);
       answerCallObserver = null;
     }
 
     if (startOutgoingCallObserver != null) {
-      callCoordinator.getLocalVideoTrack().removeObserver(startOutgoingCallObserver);
+      callCoordinator.getMediaCaptureReady().removeObserver(startOutgoingCallObserver);
       startOutgoingCallObserver = null;
     }
 

src/main/java/org/thoughtcrime/securesms/calls/MediaStreamManager.java

@@ -24,11 +24,15 @@ import org.webrtc.VideoTrack;
 
 public class MediaStreamManager {
 
-  private static final String TAG = MediaStreamManager.class.getSimpleName();
+  private static final String TAG = "MediaStreamManager";
   private static final String STREAM_ID = "local_stream";
   private static final String AUDIO_TRACK_ID = "audio_track";
   private static final String VIDEO_TRACK_ID = "video_track";
 
+  private static final int VIDEO_WIDTH = 1280;
+  private static final int VIDEO_HEIGHT = 720;
+  private static final int VIDEO_FPS = 30;
+
   private final Context context;
   private final PeerConnectionFactory peerConnectionFactory;
 
@@ -37,6 +41,7 @@ public class MediaStreamManager {
   private AudioSource audioSource;
   private SurfaceTextureHelper surfaceTextureHelper;
   private volatile boolean isFrontCamera = true;
+  private volatile boolean isCapturing = false;
 
   public interface Callback {
     void onMediaStreamReady(MediaStream stream);
@@ -56,9 +61,8 @@ public class MediaStreamManager {
     this.peerConnectionFactory = peerConnectionFactory;
   }
 
-  /** Create media stream with audio and optionally video */
-  @RequiresApi(api = Build.VERSION_CODES.M)
-  public void createMediaStream(Callback callback) {
+  /** Create a media stream with an audio track and a video track. */
+  public synchronized void createMediaStream(Callback callback) {
     try {
       MediaStream mediaStream = peerConnectionFactory.createLocalMediaStream(STREAM_ID);
 
@@ -68,24 +72,11 @@ public class MediaStreamManager {
       AudioTrack audioTrack = peerConnectionFactory.createAudioTrack(AUDIO_TRACK_ID, audioSource);
       mediaStream.addTrack(audioTrack);
 
-      // Create video track
-      videoCapturer = createVideoCapturer();
-      if (videoCapturer == null) {
-        callback.onError("No camera available");
-        callback.onMediaStreamReady(mediaStream);
-        return;
-      }
-
-      videoSource = peerConnectionFactory.createVideoSource(videoCapturer.isScreencast());
+      // Create video source and track
+      videoSource = peerConnectionFactory.createVideoSource(false);
       VideoTrack videoTrack = peerConnectionFactory.createVideoTrack(VIDEO_TRACK_ID, videoSource);
       mediaStream.addTrack(videoTrack);
 
-      // Start capturing
-      surfaceTextureHelper =
-          SurfaceTextureHelper.create("CaptureThread", EglUtils.getEglBase().getEglBaseContext());
-      videoCapturer.initialize(surfaceTextureHelper, context, videoSource.getCapturerObserver());
-      videoCapturer.startCapture(1280, 720, 30);
-
       callback.onMediaStreamReady(mediaStream);
 
     } catch (Exception e) {
@@ -94,6 +85,62 @@ public class MediaStreamManager {
     }
   }
 
+  /**
+   * Open the camera and start sending frames to VideoSource.
+   *
+   * @return true if the camera is capturing, false if it could not be started
+   */
+  @RequiresApi(api = Build.VERSION_CODES.M)
+  public synchronized boolean startVideoCapture() {
+    if (isCapturing) {
+      return true;
+    }
+
+    if (videoSource == null) {
+      Log.e(TAG, "VideoSource not initialized");
+      return false;
+    }
+
+    if (videoCapturer == null) {
+      videoCapturer = createVideoCapturer();
+      if (videoCapturer == null) {
+        Log.w(TAG, "Cannot start video capture: no camera available");
+        return false;
+      }
+
+      if (surfaceTextureHelper == null) {
+        surfaceTextureHelper =
+            SurfaceTextureHelper.create("CaptureThread", EglUtils.getEglBase().getEglBaseContext());
+      }
+
+      videoCapturer.initialize(surfaceTextureHelper, context, videoSource.getCapturerObserver());
+    }
+
+    videoCapturer.startCapture(VIDEO_WIDTH, VIDEO_HEIGHT, VIDEO_FPS);
+    isCapturing = true;
+    Log.d(TAG, "Video capture started");
+    return true;
+  }
+
+  /** Stop the camera. The capturer is kept alive. */
+  public synchronized void stopVideoCapture() {
+    if (!isCapturing) {
+      return;
+    }
+
+    if (videoCapturer != null) {
+      try {
+        videoCapturer.stopCapture();
+        Log.d(TAG, "Video capture stopped");
+      } catch (InterruptedException e) {
+        Log.e(TAG, "Interrupted while stopping capture", e);
+        Thread.currentThread().interrupt();
+      }
+    }
+
+    isCapturing = false;
+  }
+
   @Nullable
   private VideoCapturer createVideoCapturer() {
     if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA)
@@ -129,6 +176,14 @@ public class MediaStreamManager {
   }
 
   public void switchCamera(@Nullable CameraSwitchCallback callback) {
+    if (!isCapturing) {
+      Log.w(TAG, "Cannot switch camera while not capturing");
+      if (callback != null) {
+        callback.onError("Camera not active");
+      }
+      return;
+    }
+
     if (!(videoCapturer instanceof CameraVideoCapturer)) {
       Log.e(TAG, "switchCamera called but videoCapturer is not a CameraVideoCapturer");
       return;
@@ -186,10 +241,12 @@ public class MediaStreamManager {
   }
 
   /** Cleanup resources */
-  public void dispose() {
+  public synchronized void dispose() {
     if (videoCapturer != null) {
       try {
-        videoCapturer.stopCapture();
+        if (isCapturing) {
+          videoCapturer.stopCapture();
+        }
       } catch (InterruptedException e) {
         Log.e(TAG, "Error stopping capture", e);
       }
@@ -197,6 +254,8 @@ public class MediaStreamManager {
       videoCapturer = null;
     }
 
+    isCapturing = false;
+
     if (surfaceTextureHelper != null) {
       surfaceTextureHelper.dispose();
       surfaceTextureHelper = null;

src/main/java/org/thoughtcrime/securesms/components/AttachmentTypeSelector.java

@@ -26,6 +26,7 @@ import androidx.loader.app.LoaderManager;
 import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.connect.DcHelper;
 import org.thoughtcrime.securesms.permissions.Permissions;
+import org.thoughtcrime.securesms.util.Prefs;
 import org.thoughtcrime.securesms.util.ViewUtil;
 
 public class AttachmentTypeSelector extends PopupWindow {
@@ -45,7 +46,7 @@ public class AttachmentTypeSelector extends PopupWindow {
   private final @NonNull ImageView imageButton;
   private final @NonNull ImageView documentButton;
   private final @NonNull ImageView contactButton;
-  // private final @NonNull ImageView           cameraButton;
+  // private final @NonNull ImageView cameraButton;
   private final @NonNull ImageView videoButton;
   private final @NonNull ImageView locationButton;
   private final @NonNull ImageView webxdcButton;
@@ -87,11 +88,13 @@ public class AttachmentTypeSelector extends PopupWindow {
     this.webxdcButton.setOnClickListener(new PropagatingClickListener(ADD_WEBXDC));
     this.recentRail.setListener(new RecentPhotoSelectedListener());
 
-    // disable location streaming button for now
-    // if (!Prefs.isLocationStreamingEnabled(context)) {
-    this.locationButton.setVisibility(View.GONE);
-    ViewUtil.findById(layout, R.id.location_button_label).setVisibility(View.GONE);
-    // }
+    if (!Prefs.isLocationStreamingEnabled(context)) {
+      ViewUtil.findById(layout, R.id.location_linear_layout).setVisibility(View.GONE);
+    }
+
+    if (DcHelper.getContext(context).getChat(chatId).isOutBroadcast()) {
+      ViewUtil.findById(layout, R.id.webxdc_linear_layout).setVisibility(View.GONE);
+    }
 
     setLocationButtonImage(context);
 

src/main/java/org/thoughtcrime/securesms/components/CallItemView.java

@@ -15,7 +15,7 @@ import org.thoughtcrime.securesms.R;
 import org.thoughtcrime.securesms.util.DateUtils;
 
 public class CallItemView extends FrameLayout {
-  private static final String TAG = CallItemView.class.getSimpleName();
+  private static final String TAG = "CallItemView";
 
   private final @NonNull ImageView icon;
   private final @NonNull TextView title;

src/main/java/org/thoughtcrime/securesms/components/ControllableViewPager.java

@@ -1,31 +0,0 @@
-package org.thoughtcrime.securesms.components;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.view.MotionEvent;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.viewpager.widget.ViewPager;
-import org.thoughtcrime.securesms.components.viewpager.HackyViewPager;
-
-/** An implementation of {@link ViewPager} that disables swiping when the view is disabled. */
-public class ControllableViewPager extends HackyViewPager {
-
-  public ControllableViewPager(@NonNull Context context) {
-    super(context);
-  }
-
-  public ControllableViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
-    super(context, attrs);
-  }
-
-  @Override
-  public boolean onTouchEvent(MotionEvent ev) {
-    return isEnabled() && super.onTouchEvent(ev);
-  }
-
-  @Override
-  public boolean onInterceptTouchEvent(MotionEvent ev) {
-    return isEnabled() && super.onInterceptTouchEvent(ev);
-  }
-}

src/main/java/org/thoughtcrime/securesms/components/InputPanel.java

@@ -43,7 +43,7 @@ public class InputPanel extends ConstraintLayout
         KeyboardAwareLinearLayout.OnKeyboardShownListener,
         MediaKeyboard.MediaKeyboardListener {
 
-  private static final String TAG = InputPanel.class.getSimpleName();
+  private static final String TAG = "InputPanel";
 
   private static final int FADE_TIME = 150;
 

src/main/java/org/thoughtcrime/securesms/components/KeyboardAwareLinearLayout.java

@@ -38,7 +38,7 @@ import org.thoughtcrime.securesms.util.ViewUtil;
  * been opened and what its height would be.
  */
 public class KeyboardAwareLinearLayout extends LinearLayoutCompat {
-  private static final String TAG = KeyboardAwareLinearLayout.class.getSimpleName();
+  private static final String TAG = "KeyboardAwareLinearLayout";
 
   private static final long KEYBOARD_DEBOUNCE = 150;
 

src/main/java/org/thoughtcrime/securesms/components/QuoteView.java

@@ -38,7 +38,7 @@ import org.thoughtcrime.securesms.util.Util;
 
 public class QuoteView extends FrameLayout implements RecipientForeverObserver {
 
-  private static final String TAG = QuoteView.class.getSimpleName();
+  private static final String TAG = "QuoteView";
 
   private static final int MESSAGE_TYPE_PREVIEW = 0;
 

src/main/java/org/thoughtcrime/securesms/components/ScaleStableImageView.java

@@ -30,7 +30,7 @@ public class ScaleStableImageView extends AppCompatImageView
     implements KeyboardAwareLinearLayout.OnKeyboardShownListener,
         KeyboardAwareLinearLayout.OnKeyboardHiddenListener {
 
-  private static final String TAG = ScaleStableImageView.class.getSimpleName();
+  private static final String TAG = "ScaleStableImageView";
 
   private Drawable defaultDrawable;
   private Drawable currentDrawable;

src/main/java/org/thoughtcrime/securesms/components/SearchToolbar.java

@@ -22,7 +22,7 @@ import org.thoughtcrime.securesms.animation.AnimationCompleteListener;
 
 public class SearchToolbar extends LinearLayout {
 
-  private static final String TAG = SearchToolbar.class.getSimpleName();
+  private static final String TAG = "SearchToolbar";
   private float x, y;
   private MenuItem searchItem;
   private EditText searchText;

src/main/java/org/thoughtcrime/securesms/components/ThumbnailView.java

@@ -30,7 +30,7 @@ import org.thoughtcrime.securesms.util.Util;
 
 public class ThumbnailView extends FrameLayout {
 
-  private static final String TAG = ThumbnailView.class.getSimpleName();
+  private static final String TAG = "ThumbnailView";
   private static final int WIDTH = 0;
   private static final int HEIGHT = 1;
   private static final int MIN_WIDTH = 0;

src/main/java/org/thoughtcrime/securesms/components/VcardView.java

@@ -17,7 +17,7 @@ import org.thoughtcrime.securesms.mms.VcardSlide;
 import org.thoughtcrime.securesms.recipients.Recipient;
 
 public class VcardView extends FrameLayout {
-  private static final String TAG = VcardView.class.getSimpleName();
+  private static final String TAG = "VcardView";
 
   private final @NonNull AvatarView avatar;
   private final @NonNull TextView name;

src/main/java/org/thoughtcrime/securesms/components/audioplay/AudioPlaybackViewModel.java

@@ -6,22 +6,26 @@ import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
 import android.util.Log;
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.lifecycle.LiveData;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 import androidx.media3.common.MediaItem;
+import androidx.media3.common.PlaybackException;
 import androidx.media3.common.Player;
 import androidx.media3.session.MediaController;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 public class AudioPlaybackViewModel extends ViewModel {
-  private static final String TAG = AudioPlaybackViewModel.class.getSimpleName();
+  private static final String TAG = "AudioPlaybackViewModel";
 
   private static final int NON_MESSAGE_AUDIO_MSG_ID =
       0; // Audios not attached to a message doesn't have message id.
@@ -34,6 +38,8 @@ public class AudioPlaybackViewModel extends ViewModel {
   private final ExecutorService extractionExecutor = Executors.newFixedThreadPool(2);
 
   private @Nullable MediaController mediaController;
+  private @Nullable ChatAudioQueueProvider queueProvider;
+  private @Nullable Player.Listener playerListener;
   private final Handler handler;
   private boolean isUserSeeking = false;
 
@@ -47,6 +53,11 @@ public class AudioPlaybackViewModel extends ViewModel {
   }
 
   public void setMediaController(@Nullable MediaController controller) {
+    if (this.mediaController != null && playerListener != null) {
+      this.mediaController.removeListener(playerListener);
+    }
+    playerListener = null;
+
     this.mediaController = controller;
     if (mediaController != null && mediaController.isPlaying()) {
       startUpdateProgress();
@@ -59,30 +70,41 @@ public class AudioPlaybackViewModel extends ViewModel {
   public void loadAudioAndPlay(int msgId, Uri audioUri) {
     if (mediaController == null) return;
 
-    // Set media item if we have a different audio.
-    if (isDifferentAudio(msgId, audioUri)) {
-      updateState(msgId, audioUri, AudioPlaybackState.PlaybackStatus.LOADING, 0, 0);
+    String mediaId = String.valueOf(msgId);
 
-      MediaItem mediaItem =
-          new MediaItem.Builder().setMediaId(String.valueOf(msgId)).setUri(audioUri).build();
-      mediaController.setMediaItem(mediaItem);
-      mediaController.prepare();
+    MediaItem current = mediaController.getCurrentMediaItem();
+    if (current != null && mediaId.equals(current.mediaId)) {
+      mediaController.play();
+      return;
     }
 
-    play(msgId, audioUri);
+    updateState(msgId, audioUri, AudioPlaybackState.PlaybackStatus.LOADING, 0, 0);
+
+    List<MediaItem> items = null;
+    int startIndex = -1;
+
+    if (queueProvider != null) {
+      items = queueProvider.buildAudioQueue();
+      startIndex = indexOfMediaId(items, mediaId);
+    }
+
+    if (startIndex < 0) {
+      items =
+          Collections.singletonList(
+              new MediaItem.Builder().setMediaId(mediaId).setUri(audioUri).build());
+      startIndex = 0;
+    }
+
+    mediaController.setMediaItems(items, startIndex, 0);
+    mediaController.prepare();
+    mediaController.play();
   }
 
-  private boolean isSameAudio(int msgId, Uri audioUri) {
-    return !isDifferentAudio(msgId, audioUri);
-  }
-
-  private boolean isDifferentAudio(int msgId, Uri audioUri) {
-    AudioPlaybackState currentState = playbackState.getValue();
-
-    return currentState != null
-        && (msgId != currentState.getMsgId()
-            || currentState.getAudioUri() == null
-            || currentState.getAudioUri() != null && !currentState.getAudioUri().equals(audioUri));
+  private static int indexOfMediaId(List<MediaItem> items, String mediaId) {
+    for (int i = 0; i < items.size(); i++) {
+      if (mediaId.equals(items.get(i).mediaId)) return i;
+    }
+    return -1;
   }
 
   public LiveData<Map<Integer, Long>> getDurations() {
@@ -138,46 +160,72 @@ public class AudioPlaybackViewModel extends ViewModel {
     }
   }
 
-  public void pause(int msgId, Uri audioUri) {
-    if (mediaController != null && isSameAudio(msgId, audioUri)) {
+  public void pause(int msgId) {
+    if (isCurrentItem(msgId)) {
       mediaController.pause();
     }
   }
 
-  public void play(int msgId, Uri audioUri) {
-    if (mediaController != null && isSameAudio(msgId, audioUri)) {
+  public void play(int msgId) {
+    if (isCurrentItem(msgId)) {
       mediaController.play();
     }
   }
 
-  public void seekTo(long position, int msgId, Uri audioUri) {
-    if (mediaController != null && isSameAudio(msgId, audioUri)) {
+  public void seekTo(long position, int msgId) {
+    if (isCurrentItem(msgId)) {
       mediaController.seekTo(position);
     }
   }
 
-  public void stop(int msgId, Uri audioUri) {
-    if (mediaController != null && isSameAudio(msgId, audioUri)) {
+  public void stop(int msgId) {
+    if (isCurrentItem(msgId)) {
       mediaController.stop();
+      mediaController.clearMediaItems();
       stopUpdateProgress();
       playbackState.setValue(AudioPlaybackState.idle());
     }
   }
 
+  private boolean isCurrentItem(int msgId) {
+    if (mediaController == null) return false;
+    MediaItem current = mediaController.getCurrentMediaItem();
+    return current != null && String.valueOf(msgId).equals(current.mediaId);
+  }
+
   public void stopNonMessageAudioPlayback() {
     stopByIds(NON_MESSAGE_AUDIO_MSG_ID);
   }
 
   // A special method for deleting message, where we only use message Ids
   public void stopByIds(int... msgIds) {
-    AudioPlaybackState currentState = playbackState.getValue();
+    if (mediaController == null) return;
 
-    if (mediaController != null && currentState != null) {
+    AudioPlaybackState currentState = playbackState.getValue();
+    boolean stoppedCurrent = false;
+
+    if (currentState != null) {
       for (int msgId : msgIds) {
         if (msgId == currentState.getMsgId()) {
           mediaController.stop();
+          mediaController.clearMediaItems();
           stopUpdateProgress();
           playbackState.setValue(AudioPlaybackState.idle());
+          stoppedCurrent = true;
+          break;
+        }
+      }
+    }
+
+    if (!stoppedCurrent) {
+      Set<String> deletedMediaIds = new HashSet<>();
+      for (int msgId : msgIds) {
+        deletedMediaIds.add(String.valueOf(msgId));
+      }
+      for (int i = mediaController.getMediaItemCount() - 1; i >= 0; i--) {
+        MediaItem item = mediaController.getMediaItemAt(i);
+        if (deletedMediaIds.contains(item.mediaId)) {
+          mediaController.removeMediaItem(i);
         }
       }
     }
@@ -191,10 +239,10 @@ public class AudioPlaybackViewModel extends ViewModel {
   private void setupPlayerListener() {
     if (mediaController == null) return;
 
-    mediaController.addListener(
+    playerListener =
         new Player.Listener() {
           @Override
-          public void onEvents(Player player, Player.Events events) {
+          public void onEvents(@NonNull Player player, @NonNull Player.Events events) {
             if (events.containsAny(Player.EVENT_IS_PLAYING_CHANGED)) {
               if (player.isPlaying()) {
                 startUpdateProgress();
@@ -203,20 +251,40 @@ public class AudioPlaybackViewModel extends ViewModel {
               }
               updateCurrentState(false);
             }
+            if (events.containsAny(Player.EVENT_MEDIA_ITEM_TRANSITION)) {
+              updateCurrentState(true);
+            }
             if (events.containsAny(Player.EVENT_PLAYBACK_STATE_CHANGED)) {
               if (player.getPlaybackState() == Player.STATE_READY) {
                 updateCurrentState(false);
-              } else if (player.getPlaybackState() == Player.STATE_ENDED) {
-                // This is to prevent automatically playing after the audio
-                // has been play to the end once, then user dragged the seek bar again
+              } else if (player.getPlaybackState() == Player.STATE_ENDED
+                  && !player.hasNextMediaItem()) {
                 mediaController.setPlayWhenReady(false);
               }
             }
-            if (events.containsAny(Player.EVENT_PLAYER_ERROR)) {
+          }
+
+          @Override
+          public void onPlayerError(@NonNull PlaybackException error) {
+            Log.w(
+                TAG,
+                "Playback error on msgId="
+                    + (mediaController.getCurrentMediaItem() != null
+                        ? mediaController.getCurrentMediaItem().mediaId
+                        : "null"),
+                error);
+
+            if (mediaController.hasNextMediaItem()) {
+              mediaController.seekToNextMediaItem();
+              mediaController.prepare();
+              mediaController.play();
+            } else {
               updateCurrentAudioState(AudioPlaybackState.PlaybackStatus.ERROR, 0, 0);
+              mediaController.clearMediaItems();
             }
           }
-        });
+        };
+    mediaController.addListener(playerListener);
   }
 
   private void updateCurrentState(boolean queryPlaying) {
@@ -285,6 +353,11 @@ public class AudioPlaybackViewModel extends ViewModel {
     }
   }
 
+  // Playing Queue
+  public void setQueueProvider(@Nullable ChatAudioQueueProvider provider) {
+    this.queueProvider = provider;
+  }
+
   // Progress tracking
   private final Runnable progressRunnable =
       new Runnable() {

src/main/java/org/thoughtcrime/securesms/components/audioplay/AudioView.java

@@ -23,7 +23,7 @@ import org.thoughtcrime.securesms.util.DateUtils;
 
 public class AudioView extends FrameLayout {
 
-  private static final String TAG = AudioView.class.getSimpleName();
+  private static final String TAG = "AudioView";
 
   private final @NonNull ImageView playPauseButton;
   private final AnimatedVectorDrawableCompat playToPauseDrawable;
@@ -109,12 +109,12 @@ public class AudioView extends FrameLayout {
 
           AudioPlaybackState state = viewModel.getPlaybackState().getValue();
 
-          if (state != null && msgId == state.getMsgId() && audioUri.equals(state.getAudioUri())) {
+          if (state != null && msgId == state.getMsgId()) {
             // Same audio
             if (state.getStatus() == AudioPlaybackState.PlaybackStatus.PLAYING) {
-              viewModel.pause(msgId, audioUri);
+              viewModel.pause(msgId);
             } else {
-              viewModel.play(msgId, audioUri);
+              viewModel.play(msgId);
             }
           } else {
             // Different audio
@@ -145,7 +145,7 @@ public class AudioView extends FrameLayout {
           @Override
           public void onStopTrackingTouch(SeekBar seekBar) {
             viewModel.setUserSeeking(false);
-            viewModel.seekTo(seekBar.getProgress(), msgId, audioUri);
+            viewModel.seekTo(seekBar.getProgress(), msgId);
           }
         });
 
@@ -305,7 +305,7 @@ public class AudioView extends FrameLayout {
     if (audioUri == null || state == null) return;
 
     // Check if this state is about this message
-    boolean isThisMessage = msgId == state.getMsgId() && audioUri.equals(state.getAudioUri());
+    boolean isThisMessage = msgId == state.getMsgId();
 
     if (isThisMessage) {
       updateUIForPlaybackState(state);
@@ -340,13 +340,9 @@ public class AudioView extends FrameLayout {
   private void onDurationsChanged(Map<Integer, Long> durations) {
     AudioPlaybackState state = viewModel.getPlaybackState().getValue();
 
-    // When there is no playback happening, msgId can be -1 and audioUri is null
-    if (state != null
-        && msgId >= 0
-        && msgId == state.getMsgId()
-        && audioUri != null
-        && audioUri.equals(state.getAudioUri())) {
-      return; // Is playing this message
+    // When there is no playback happening, msgId can be -1
+    if (state != null && msgId >= 0 && msgId == state.getMsgId()) {
+      return;
     }
 
     Long duration = durations.get(msgId);

src/main/java/org/thoughtcrime/securesms/components/audioplay/ChatAudioQueueProvider.java

@@ -0,0 +1,41 @@
+package org.thoughtcrime.securesms.components.audioplay;
+
+import android.content.Context;
+import android.net.Uri;
+import androidx.annotation.NonNull;
+import androidx.media3.common.MediaItem;
+import com.b44t.messenger.DcContext;
+import com.b44t.messenger.DcMsg;
+import java.util.ArrayList;
+import java.util.List;
+import org.thoughtcrime.securesms.connect.DcHelper;
+
+public class ChatAudioQueueProvider {
+
+  private final Context context;
+  private final int chatId;
+  private final int accountId;
+
+  public ChatAudioQueueProvider(@NonNull Context context, int chatId, int accountId) {
+    this.context = context.getApplicationContext();
+    this.chatId = chatId;
+    this.accountId = accountId;
+  }
+
+  @NonNull
+  public List<MediaItem> buildAudioQueue() {
+    DcContext dcContext = DcHelper.getContext(context);
+    int[] msgIds = dcContext.getChatMedia(chatId, DcMsg.DC_MSG_AUDIO, DcMsg.DC_MSG_VOICE, 0);
+
+    List<MediaItem> items = new ArrayList<>(msgIds.length);
+    for (int msgId : msgIds) {
+      String id = String.valueOf(msgId);
+      items.add(
+          new MediaItem.Builder()
+              .setMediaId(id)
+              .setUri(Uri.parse("dcmsg://" + accountId + "/" + id))
+              .build());
+    }
+    return items;
+  }
+}

src/main/java/org/thoughtcrime/securesms/components/emoji/MediaKeyboard.java

@@ -22,7 +22,7 @@ import org.thoughtcrime.securesms.util.ResUtil;
 public class MediaKeyboard extends LinearLayout
     implements InputView, Consumer<EmojiViewItem>, StickerPickerView.StickerPickerListener {
 
-  private static final String TAG = MediaKeyboard.class.getSimpleName();
+  private static final String TAG = "MediaKeyboard";
 
   @Nullable private MediaKeyboardListener keyboardListener;
   private EmojiPickerView emojiPicker;

src/main/java/org/thoughtcrime/securesms/components/emoji/StickerPickerView.java

@@ -71,7 +71,7 @@ public class StickerPickerView extends RecyclerView {
     }
 
     // Sort stickers just to provide consistent order
-    Collections.sort(stickerFiles, (f1, f2) -> f1.getName().compareToIgnoreCase(f2.getName()));
+    Collections.sort(stickerFiles, (f1, f2) -> f2.getName().compareToIgnoreCase(f1.getName()));
 
     return stickerFiles;
   }

src/main/java/org/thoughtcrime/securesms/components/reminder/DozeReminder.java

@@ -23,7 +23,7 @@ import org.thoughtcrime.securesms.util.Prefs;
 
 @SuppressLint("BatteryLife")
 public class DozeReminder {
-  private static final String TAG = DozeReminder.class.getSimpleName();
+  private static final String TAG = "DozeReminder";
 
   public static boolean isEligible(Context context) {
     if (context == null) {

src/main/java/org/thoughtcrime/securesms/components/viewpager/ExtendedOnPageChangedListener.java

@@ -1,22 +0,0 @@
-package org.thoughtcrime.securesms.components.viewpager;
-
-import androidx.viewpager.widget.ViewPager;
-
-public abstract class ExtendedOnPageChangedListener implements ViewPager.OnPageChangeListener {
-
-  private Integer currentPage = null;
-
-  @Override
-  public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {}
-
-  @Override
-  public void onPageSelected(int position) {
-    if (currentPage != null && currentPage != position) onPageUnselected(currentPage);
-    currentPage = position;
-  }
-
-  public abstract void onPageUnselected(int position);
-
-  @Override
-  public void onPageScrollStateChanged(int state) {}
-}

src/main/java/org/thoughtcrime/securesms/components/viewpager/HackyViewPager.java

@@ -1,41 +0,0 @@
-package org.thoughtcrime.securesms.components.viewpager;
-
-import android.content.Context;
-import android.util.AttributeSet;
-import android.util.Log;
-import android.view.MotionEvent;
-import androidx.viewpager.widget.ViewPager;
-
-/**
- * Hacky fix for http://code.google.com/p/android/issues/detail?id=18990
- *
- * <p>ScaleGestureDetector seems to mess up the touch events, which means that ViewGroups which make
- * use of onInterceptTouchEvent throw a lot of IllegalArgumentException: pointerIndex out of range.
- *
- * <p>There's not much I can do in my code for now, but we can mask the result by just catching the
- * problem and ignoring it.
- *
- * @author Chris Banes
- */
-public class HackyViewPager extends ViewPager {
-
-  private static final String TAG = HackyViewPager.class.getSimpleName();
-
-  public HackyViewPager(Context context) {
-    super(context);
-  }
-
-  public HackyViewPager(Context context, AttributeSet attrs) {
-    super(context, attrs);
-  }
-
-  @Override
-  public boolean onInterceptTouchEvent(MotionEvent ev) {
-    try {
-      return super.onInterceptTouchEvent(ev);
-    } catch (IllegalArgumentException e) {
-      Log.w(TAG, e);
-      return false;
-    }
-  }
-}

src/main/java/org/thoughtcrime/securesms/connect/AccountManager.java

@@ -18,7 +18,7 @@ import org.thoughtcrime.securesms.accounts.AccountSelectionListFragment;
 
 public class AccountManager {
 
-  private static final String TAG = AccountManager.class.getSimpleName();
+  private static final String TAG = "AccountManager";
   private static final String LAST_ACCOUNT_ID = "last_account_id";
   private static AccountManager self;
 
@@ -38,7 +38,7 @@ public class AccountManager {
     return self;
   }
 
-  public void migrateToDcAccounts(ApplicationContext context) {
+  public void migrateToDcAccounts(Context context, DcAccounts dcAccounts) {
     try {
       int selectAccountId = 0;
 
@@ -49,8 +49,7 @@ public class AccountManager {
           if (!file.isDirectory()
               && file.getName().startsWith("messenger")
               && file.getName().endsWith(".db")) {
-            int accountId =
-                ApplicationContext.getDcAccounts().migrateAccount(file.getAbsolutePath());
+            int accountId = dcAccounts.migrateAccount(file.getAbsolutePath());
             if (accountId != 0) {
               String selName =
                   PreferenceManager.getDefaultSharedPreferences(context)
@@ -67,7 +66,7 @@ public class AccountManager {
       }
 
       if (selectAccountId != 0) {
-        ApplicationContext.getDcAccounts().selectAccount(selectAccountId);
+        dcAccounts.selectAccount(selectAccountId);
       }
     } catch (Exception e) {
       Log.e(TAG, "Error in migrateToDcAccounts()", e);