title: Cannot receive VoIP messages in background/suspended state in iOS 13 Devices
body: <p>I am developing a chatting application. To enhance the message delivery experience, I was using VoIP push to deliver messages to the application in the background/killed state. This is just how whatsapp does this, I guess. It was working fine on devices with iOS version prior to 13.0. However, on iOS 13 devices the push is only coming in the foreground state. In the background state, I could not get callback in <code>didReceiveIncomingPushWith</code> delegate method. I have gone through few online blogs where it's been written that apple restricted it to only use for the calling purposes now. One more thing that people proposed was that if the app is distributed over XCode 10 i.e, compiled with iOS 12 SDK then also it should work. However, It is not working in my case no matter what XCode I used. My objective is to deliver the messages to the users even when the application is killed/in background just like whatsapp. Any thoughts/guidance over this is highly appreciated. Thanks</p>