Detecting GSM Call States in IOS 10 (Swift 3, Xcode 8) and Notification from Background state

Question

TLDR: Detect call end event from background Please see update to the question below:

Is it possible to detect/get an event for call state in IOS 10 usin

Answer 1

After a long while it looks like this may not be feasible in iOS 10. I did try using the background modes as suggested but neither i need to play music nor keep tracking the location at all times hence they do not work out for me.

I cannot use Push Kit because the intent is to get events for normal GSM calls and not voip calls.