Do you mean you turned the screen on and off?
If you turned that actual phone all the way off and on and was still taking up your screen after the phone rebooted then that may have been some kind of malware and not a legitimate game
In particular more should be shot while trying to surrender and weasel their way out of responsibility. There's a pile of bodies from both sides that's ten feet deep but the guy who started the whole affair is going to be taken alive? No!
That's a pet peeve of mine. Often the villain doesn't even try to surrender and the hero spares him anyway, leaving the question of what the hell the rest of it was all for.