RU-T47 Fixing issue with voice channel

__mocks__/@livekit/react-native.ts

@@ -0,0 +1,17 @@
+// Mock for @livekit/react-native
+export const AudioSession = {
+  startAudioSession: jest.fn().mockResolvedValue(undefined),
+  stopAudioSession: jest.fn().mockResolvedValue(undefined),
+  configureAudio: jest.fn().mockResolvedValue(undefined),
+  getAudioOutputs: jest.fn().mockResolvedValue([]),
+  selectAudioOutput: jest.fn().mockResolvedValue(undefined),
+  showAudioRoutePicker: jest.fn().mockResolvedValue(undefined),
+  setAppleAudioConfiguration: jest.fn().mockResolvedValue(undefined),
+};
+
+export const registerGlobals = jest.fn();
+
+export default {
+  AudioSession,
+  registerGlobals,
+};

src/stores/app/livekit-store.ts

@@ -1,3 +1,4 @@
+import { AudioSession } from '@livekit/react-native';
 import { RTCAudioSession } from '@livekit/react-native-webrtc';
 import notifee, { AndroidForegroundServiceType, AndroidImportance } from '@notifee/react-native';
 import { getRecordingPermissionsAsync, requestRecordingPermissionsAsync } from 'expo-audio';
@@ -381,18 +382,58 @@ export const useLiveKitStore = create<LiveKitState>((set, get) => ({
           message: 'Cannot connect to room - permissions not granted',
           context: { roomName: roomInfo.Name },
         });
+        Alert.alert('Voice Connection Error', 'Microphone permission is required to join a voice channel. Please grant the permission in your device settings.', [
+          { text: 'Cancel', style: 'cancel' },
+          { text: 'Open Settings', onPress: () => Linking.openSettings() },
+        ]);
         return;
       }
 
       const { currentRoom, voipServerWebsocketSslAddress } = get();
 
-      // Disconnect from current room if connected
+      // Validate connection parameters before attempting to connect
+      if (!voipServerWebsocketSslAddress) {
+        logger.error({
+          message: 'Cannot connect to room - no VoIP server address available',
+          context: { roomName: roomInfo.Name },
+        });
+        Alert.alert('Voice Connection Error', 'Voice server address is not available. Please try again later.');
+        return;
+      }
+
+      if (!token) {
+        logger.error({
+          message: 'Cannot connect to room - no token provided',
+          context: { roomName: roomInfo.Name },
+        });
+        Alert.alert('Voice Connection Error', 'Voice channel token is missing. Please try refreshing the voice channels.');
+        return;
+      }
+
+      // Disconnect from current room if connected (use full cleanup flow)
       if (currentRoom) {
-        currentRoom.disconnect();
+        await get().disconnectFromRoom();
       }
 
       set({ isConnecting: true });
 
+      // Start the native audio session before connecting (required for production builds)
+      // In dev builds, the audio session may persist across hot reloads, but in production
+      // cold starts it must be explicitly started for WebRTC to function correctly
+      if (Platform.OS !== 'web') {
+        try {
+          await AudioSession.startAudioSession();
+          logger.info({
+            message: 'Audio session started successfully',
+          });
+        } catch (audioSessionError) {
+          logger.warn({
+            message: 'Failed to start audio session - continuing with connection attempt',
+            context: { error: audioSessionError },
+          });
+        }
+      }
+
       // Create a new room
       const room = new Room();
 
@@ -576,10 +617,30 @@ export const useLiveKitStore = create<LiveKitState>((set, get) => ({
     } catch (error) {
       logger.error({
         message: 'Failed to connect to room',
-        context: { error },
+        context: { error, roomName: roomInfo?.Name },
       });
 
+      // Stop audio session on failure since we started it above
+      if (Platform.OS !== 'web') {
+        try {
+          await AudioSession.stopAudioSession();
+        } catch (stopError) {
+          logger.warn({
+            message: 'Failed to stop audio session after connection error',
+            context: { error: stopError },
+          });
+        }
+      }
+
       set({ isConnecting: false });
+
+      // Show user-visible error so the failure is not silent in production builds
+      const errorMessage = error instanceof Error ? error.message : 'An unknown error occurred';
+      Alert.alert(
+        'Voice Connection Failed',
+        `Unable to connect to voice channel "${roomInfo?.Name || 'Unknown'}". ${errorMessage}`,
+        [{ text: 'OK' }]
+      );
     }
   },
 
@@ -589,6 +650,21 @@ export const useLiveKitStore = create<LiveKitState>((set, get) => ({
       await currentRoom.disconnect();
       await audioService.playDisconnectedFromAudioRoomSound();
 
+      // Stop the native audio session that was started during connectToRoom
+      if (Platform.OS !== 'web') {
+        try {
+          await AudioSession.stopAudioSession();
+          logger.debug({
+            message: 'Audio session stopped',
+          });
+        } catch (audioSessionError) {
+          logger.warn({
+            message: 'Failed to stop audio session',
+            context: { error: audioSessionError },
+          });
+        }
+      }
+
       // End CallKeep call (works on all platforms - web has no-op implementation)
       try {
         await callKeepService.endCall();