devil_gecko

Hello, the phone works fine for a while, then it starts stuttering and once the screen goes black, I can't boot it back up right away.

Putting it in the freezer for 20 minutes pulls off the trick, but only for a while before it starts malfunctioning again.

factory resetting, using Wake Lock app and safe mode haven't helped at all.

I have considered installing a custom rom, but the current state of the phone doesn't allow my pc to recognize the phone in fastboot mode, so I can't even unlock the bootloader. Plus I have never gone through this procedure on a Samsung device, so I'd rather be sure it would eventually work out before even attempting.

At this point I'd only assume it's a hardw