Add fallback audio configurations for iOS

If primary audio config fails (OSStatus -50), automatically try:
1. videoChat mode (speaker default)
2. voiceChat mode (earpiece default)
3. minimal config (most compatible)

Also make speaker output setting non-critical - call will work
even if output can't be changed.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

utils/audioSession.ts

@@ -50,32 +50,76 @@ export async function configureAudioForVoiceCall(): Promise<void> {
     }
 
     if (Platform.OS === 'ios') {
-      // iOS-specific configuration
+      // iOS-specific configuration with fallback strategies
-      // IMPORTANT: Use 'videoChat' mode instead of 'voiceChat' to enable speaker by default
+      // Try multiple configurations in order of preference
-      // voiceChat + defaultToSpeaker causes OSStatus error -50 on some iOS versions
-      console.log('[AudioSession] Step 1: Setting Apple audio config...');
-      await AudioSession.setAppleAudioConfiguration({
-        audioCategory: 'playAndRecord',
-        // Only use options that are safe with playAndRecord category
-        // Removed 'defaultToSpeaker' - it conflicts with some iOS versions
-        // Instead, using 'videoChat' mode which defaults to speaker
-        audioCategoryOptions: [
-          'allowBluetooth',
-          'mixWithOthers',
-        ],
-        // Use 'videoChat' instead of 'voiceChat' - it enables speaker by default
-        audioMode: 'videoChat',
-      });
 
-      console.log('[AudioSession] Step 2: Starting audio session...');
+      const configs = [
+        // Strategy 1: videoChat mode (speaker by default, no problematic options)
+        {
+          name: 'videoChat',
+          config: {
+            audioCategory: 'playAndRecord',
+            audioCategoryOptions: ['allowBluetooth', 'mixWithOthers'],
+            audioMode: 'videoChat',
+          },
+        },
+        // Strategy 2: voiceChat mode (more compatible, but earpiece by default)
+        {
+          name: 'voiceChat',
+          config: {
+            audioCategory: 'playAndRecord',
+            audioCategoryOptions: ['allowBluetooth', 'mixWithOthers'],
+            audioMode: 'voiceChat',
+          },
+        },
+        // Strategy 3: Minimal config (most compatible)
+        {
+          name: 'minimal',
+          config: {
+            audioCategory: 'playAndRecord',
+            audioCategoryOptions: [],
+            audioMode: 'default',
+          },
+        },
+      ];
+
+      let configSuccess = false;
+      let lastError: any = null;
+
+      for (const { name, config } of configs) {
+        try {
+          console.log(`[AudioSession] Trying ${name} configuration...`);
+          await AudioSession.setAppleAudioConfiguration(config);
+          console.log(`[AudioSession] ${name} configuration succeeded!`);
+          configSuccess = true;
+          break;
+        } catch (err) {
+          console.warn(`[AudioSession] ${name} config failed:`, err);
+          lastError = err;
+          // Continue to next strategy
+        }
+      }
+
+      if (!configSuccess) {
+        console.error('[AudioSession] All iOS configurations failed!');
+        throw lastError || new Error('All audio configurations failed');
+      }
+
+      console.log('[AudioSession] Starting audio session...');
       await AudioSession.startAudioSession();
 
-      console.log('[AudioSession] Step 3: Setting default output to speaker...');
+      // Try to set speaker output (non-critical, don't throw on failure)
+      try {
+        console.log('[AudioSession] Setting default output to speaker...');
         await AudioSession.configureAudio({
           ios: {
             defaultOutput: 'speaker',
           },
         });
+      } catch (outputErr) {
+        console.warn('[AudioSession] Could not set speaker output:', outputErr);
+        // Continue anyway - audio will work, just maybe on earpiece
+      }
     } else if (Platform.OS === 'android') {
       // Android-specific configuration
       // IMPORTANT: Using 'music' stream type to force output to speaker