Lock screen issue. All functions, events and everything stops executing.

I’m making a multiplayer game in Android but right now facing issue when player locks the phone using the lock button, the whole game comes to a stand still. The moment the power button is pressed it looks like the whole game is paused despite I have Pauseable set to false in Game mode. Is there anyway to run the game in background while the phone is locked or when the app is put to background.

I’m using UPlatformGameInstance and I have delegates (AppWillEnterBackground and AppWillDeactivate) bound but no use. The delegates do fire but after that nothing.