Glitchy Audio During WebRTC Call on Both Android & iOS (react-native-webrtc + InCallManager)

Hi Team,

I'm currently implementing video calling using react-native-webrtc and handling audio routing via react-native-incall-manager. The video component is working flawlessly; however, I'm facing a serious issue with audio quality during the call. The sound is often glitchy, distorted, or contains unwanted noise.

export async function startInCallManage() {
try {
InCallManager.start({media: 'video', auto: true});
InCallManager.setSpeakerphoneOn(true);
InCallManager.setMicrophoneMute(false);
return await pauseProcessing(1);
} catch (error) {
throw error;
}
}

export function stopInCallManager() {
try {
return InCallManager.stop();
} catch (error) {
throw error;
}
}
useEffect(() => {
setTimeout(async () => {
try {
await startInCallManage();
await startCall();
} catch (error) {
console.log('Error while starting call', error);
}
}, 1000);
}, []);

Key Observations

• Audio becomes clear and stable when one peer mutes their microphone.
• This suggests that the issue could be related to echo cancellation, audio routing conflicts, or hardware-level interference when both peers have their mics active.

What I’ve Tried
Delaying peer connection setup until after InCallManager.start().

Using native code to adjust audio modes and routing on Android.

Enabling/disabling speakerphone, muting/unmuting mic as a test.

Request
If needed, I can share the code where I establish the WebRTC peer connection, in case something there might be contributing to the issue.

I’d really appreciate any help or guidance to resolve this — especially from others who may have successfully implemented high-quality audio using react-native-webrtc.

Thank you in advance!

Start by reviewing the shown startInCallManage and stopInCallManager functions, then inspect the referenced peer-connection setup and native Android routing changes. Reproduce a call with both microphones active on Android and iOS, and compare it with the muted-peer case; done means audio is clear and stable without requiring either peer to mute.