So I have a friend who has an S3 that gets piss poor battery life now. Like, he was just charging it through his laptop while using it, and it died. The struggle is far too real and I need to find out if there's a way to help him.
Is there any enlightenment anyone can offer me on this? He tried doing something to it where it would let him install a ROM on it, but apparently it failed because he's on kitkat, and the device bootloader is supposedly stuck on kitkat now too or something. I have absolutely no clue what that means or what to do with it, but I feel bad for him at this point. If I can contact him at any point in time throughout the day it's a borderline miracle. He says it's been like this ever since he upgraded to kitkat. Short of buying a new phone, what can be done to help him out?