diff --git a/app/products/calls/connection/connection.ts b/app/products/calls/connection/connection.ts
index 2586e29cc..ff1fb243a 100644
--- a/app/products/calls/connection/connection.ts
+++ b/app/products/calls/connection/connection.ts
@@ -5,7 +5,7 @@ import {RTCMonitor, RTCPeer} from '@mattermost/calls/lib';
 import {deflate} from 'pako';
 import {DeviceEventEmitter, type EmitterSubscription, NativeEventEmitter, NativeModules, Platform} from 'react-native';
 import InCallManager from 'react-native-incall-manager';
-import {mediaDevices, MediaStream, MediaStreamTrack, RTCPeerConnection} from 'react-native-webrtc';
+import {mediaDevices, MediaStream, MediaStreamTrack, registerGlobals} from 'react-native-webrtc';
 
 import {setPreferredAudioRoute, setSpeakerphoneOn} from '@calls/actions/calls';
 import {
@@ -19,7 +19,7 @@ import {getICEServersConfigs} from '@calls/utils';
 import {WebsocketEvents} from '@constants';
 import {getServerCredentials} from '@init/credentials';
 import NetworkManager from '@managers/network_manager';
-import {getFullErrorMessage} from '@utils/errors';
+import {getErrorMessage, getFullErrorMessage} from '@utils/errors';
 import {logDebug, logError, logInfo, logWarning} from '@utils/log';
 
 import {WebSocketClient, wsReconnectionTimeoutErr} from './websocket_client';
@@ -80,10 +80,29 @@ export async function newConnection(
         }
     };
 
+    // Registering WebRTC globals (e.g. RTCPeerConnection)
+    registerGlobals();
+
     // getClient can throw an error, which will be handled by the caller.
     const client = NetworkManager.getClient(serverUrl);
     const credentials = await getServerCredentials(serverUrl);
 
+    let config;
+    try {
+        config = await client.getCallsConfig();
+    } catch (err) {
+        throw new Error(`calls: fetching calls config: ${getFullErrorMessage(err)}`);
+    }
+
+    let av1Support = false;
+    if (config.EnableAV1 && !config.EnableSimulcast) {
+        try {
+            av1Support = Boolean(await RTCPeer.getVideoCodec('video/AV1'));
+        } catch (err) {
+            throw new Error(`calls: failed to check AV1 support: ${getErrorMessage(err)}`);
+        }
+    }
+
     const ws = new WebSocketClient(serverUrl, client.getWebSocketUrl(), credentials?.token);
 
     // Throws an error, to be caught by caller.
@@ -228,23 +247,18 @@ export async function newConnection(
             });
         } else {
             logDebug('calls: ws open, sending join msg');
+
             ws.send('join', {
                 channelID,
                 title,
                 threadID: rootId,
+                av1Support,
             });
         }
     });
 
     ws.on('join', async () => {
         logDebug('calls: join ack received, initializing connection');
-        let config;
-        try {
-            config = await client.getCallsConfig();
-        } catch (err) {
-            logError('calls: fetching calls config:', getFullErrorMessage(err));
-            return;
-        }
 
         const iceConfigs = getICEServersConfigs(config);
         if (config.NeedsTURNCredentials) {
@@ -313,10 +327,6 @@ export async function newConnection(
         peer = new RTCPeer({
             iceServers: iceConfigs || [],
             logger,
-            webrtc: {
-                MediaStream,
-                RTCPeerConnection,
-            },
         });
 
         rtcMonitor = new RTCMonitor({
diff --git a/app/products/calls/types/calls.ts b/app/products/calls/types/calls.ts
index 1d4dad9cf..dc2da1f89 100644
--- a/app/products/calls/types/calls.ts
+++ b/app/products/calls/types/calls.ts
@@ -1,12 +1,14 @@
 // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
 // See LICENSE.txt for license information.
 
-import type {
-    CallJobState,
-    CallsConfig,
-    EmojiData,
-    UserReactionData,
+import {
+    TranscribeAPI,
+    type CallJobState,
+    type CallsConfig,
+    type EmojiData,
+    type UserReactionData,
 } from '@mattermost/calls/lib/types';
+
 import type UserModel from '@typings/database/models/servers/user';
 
 export type GlobalCallsState = {
@@ -173,6 +175,8 @@ export const DefaultCallsConfig: CallsConfigState = {
     EnableTranscriptions: false,
     EnableLiveCaptions: false,
     HostControlsAllowed: false,
+    EnableAV1: false,
+    TranscribeAPI: TranscribeAPI.WhisperCPP,
 };
 
 export type ApiResp = {
diff --git a/package-lock.json b/package-lock.json
index 6a4c696d6..736fcf69c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
   "packages": {
     "": {
       "name": "mattermost-mobile",
-      "version": "2.18.0",
+      "version": "2.19.0",
       "hasInstallScript": true,
       "license": "Apache 2.0",
       "dependencies": {
@@ -17,7 +17,7 @@
         "@formatjs/intl-numberformat": "8.10.3",
         "@formatjs/intl-pluralrules": "5.2.14",
         "@gorhom/bottom-sheet": "4.6.3",
-        "@mattermost/calls": "github:mattermost/calls-common#cc5e65f6c103138fd013d6fa45eb33bfe7544f2a",
+        "@mattermost/calls": "github:mattermost/calls-common#09f1d4e715ccaf4f161e5e5340e251997336ee3d",
         "@mattermost/compass-icons": "0.1.45",
         "@mattermost/hardware-keyboard": "file:./libraries/@mattermost/hardware-keyboard",
         "@mattermost/keyboard-tracker": "file:./libraries/@mattermost/keyboard-tracker",
@@ -5562,10 +5562,10 @@
       }
     },
     "node_modules/@mattermost/calls": {
-      "name": "@calls/common",
-      "version": "0.14.0",
-      "resolved": "git+ssh://git@github.com/mattermost/calls-common.git#cc5e65f6c103138fd013d6fa45eb33bfe7544f2a",
-      "integrity": "sha512-fWCVnjuU3LQ8RO35uI9Qypi7HSVWoALcbNIotNcWd52XQ+BLgt69nSpKRli9qbvj4d9W/UgPaT3bOsyBvIXQrA=="
+      "name": "@mattermost/calls-common",
+      "version": "0.27.2",
+      "resolved": "git+ssh://git@github.com/mattermost/calls-common.git#09f1d4e715ccaf4f161e5e5340e251997336ee3d",
+      "integrity": "sha512-8nBf2upZbCa0GTkusCmmHlT8Tz4BmegAFoDNK82Y3o+wfZd3ZESIG6GEG6aKlrXt/fwU7iCaSQw59WxDXhun9w=="
     },
     "node_modules/@mattermost/commonmark": {
       "version": "0.30.1-2",
diff --git a/package.json b/package.json
index 0f7def730..31c046a9d 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@formatjs/intl-numberformat": "8.10.3",
     "@formatjs/intl-pluralrules": "5.2.14",
     "@gorhom/bottom-sheet": "4.6.3",
-    "@mattermost/calls": "github:mattermost/calls-common#cc5e65f6c103138fd013d6fa45eb33bfe7544f2a",
+    "@mattermost/calls": "github:mattermost/calls-common#09f1d4e715ccaf4f161e5e5340e251997336ee3d",
     "@mattermost/compass-icons": "0.1.45",
     "@mattermost/hardware-keyboard": "file:./libraries/@mattermost/hardware-keyboard",
     "@mattermost/keyboard-tracker": "file:./libraries/@mattermost/keyboard-tracker",