I have noticed that when I charge my Galaxy S4 version 4.4.2 overnight, when I wake up the LCD screen is black and the only two buttons when pushed are the menu and back button. I have to take the battery out for a few seconds and restart before it will function correctly again. When I call ATT technical support the only thing they suggest is to master reset ALL THE TIME and of course that's getting annoying. I've been noticing this ever since the last update. Is there a fix anyone or any settings I should fix or change?