I am working on an iOS client project where we have implemented Agora voice call functionality using the "AgoraAudio_iOS" SDK (version below 4.0.0). Everything was working perfectly fine, and the calls were being made successfully.

However, after encountering Apple's Bitcode restriction in XCode 16 and above, we upgraded the Agora SDK to a version greater than 4.0.0 to resolve this issue, as it contains Bitcode which is preventing us from uploading the app to the App Store or TestFlight.

After upgrading the bitcode related issue resolved and able to upload build on store and testflight, but the voice call feature has stopped working correctly. Specifically, the AgoraRtcEngineDelegate methods are not being called, even after the remote user accepts the call. Interestingly, the feature works fine with SDK versions below 4.0.0.

Has anyone faced a similar issue when upgrading the Agora SDK? Could you please provide guidance on how to resolve the issue of delegate methods not being triggered?

Thanks in advance for your help!