Background calling for IOS 13

Hi, I have successfully implemented the webrtc and things are working fine in the foreground. However, the background calling is somewhat new for me so I really dont know much about it and now as far as I know IOS 13 doesn’t call background calling. Can anyone please guide me how to achieve background calling in both IOS and android.

For android, I have seen people use react-native-foreground and react-native-callkeep to make it work. but for IOS there is not much information available or I might have not searched it properly I guess.

Please advise.

Thank you.