When your phone does not respond at all, I am sure you are tempted to throw it against the wall. Oh wait, you don’t have to do that there is still a solution for that even if you think there is none anymore.
If you could not turn the phone off, even how hard you tried because the screen froze, here’s the tip. You actually just have to power and hold the volume key down until it will turn off. You don’t have to worry because it will not erase your data at all, this will not also reset your phone default. So after your phone turned off, turn it on the normal way. I am sure your phone will be back to normal.