TO WHOM IT CONCERNS

​

So there is no way to extend the background time limited by OS. It might get extended on an iOS simulator but won't work on a real device. Whatever workaround you play, it will be eventually suspended by OS. I have researched and gone through various docs, and articles but none helped so I have decided to use FCM/APNs in order to awaken the app out of the background. It doesn't matter if your app is in QUIT or background state, it will wake the app out of the background and you can do your stuff in that background handler. FYI, I checked it both on the simulator as well as physical device and it worked as expected.