Callkit loudspeaker bug / how WhatsApp fixed it?

Question

I have an app with Callkit functionality. When I press the loudspeaker button, it will flash and animate to the OFF state (sometimes the speaker is set to LOUD but

Answer 1

Maybe you can setMode to AVAudioSessionModeDefault.

When I use CallKit + WebRTC

1. I configure AVAudioSessionModeDefault mode.

2. Alloc CXProvider and reportNewIncomingCallWithUUID

3. Use WebRTC , after ICEConnected, WebRTC change mode to AVAudioSessionModeVoiceChat, then speaker issue happen.

4. Later I setMode back to AVAudioSessionModeDefault, the speaker works well.