Flexisip Linphone don't revice incoming call when in background mode

Question

I using Linphone to build VOIP app on iOS, backend SIP server using Flexisip.

If 2 users are in my application, incoming call will well working.

But if 1 user exit app (press home buttom), incoming call will unstable working ( sometimes well working, sometimes not )

How do i fix ?

Thanks all.

Answer 1

If you build the app on your own:

1. You need to apply for a VoIP push certification from https://developer.apple.com and deploy it to Flexisip.

2. Make sure you modify the register message like the code LinphoneManager.m did, attach "pn-type", "app-id", "pn-tok" and so on to Contact Header.