I have a stock G4, which I replaced the screen on a few months ago.
Every few days, it randomly powers off and then wont turn back on. When I connect a charger, I get a bootloop with the splash screen appearing/reboot cycling.
Fastboot works (although I only tried this with a charger, not a PC attached).
Eventually the phone will seem to reboot correctly (after charging for a while, rebooting into fastboot)
One thing that does seem to work is 5 minutes in the freezer... After a restart this shows that the last crash occurred with 92% battery. - but then it keeps powering off with no warning, and fastboot indicates low battery...
I'm guessing either hardware/power management issues, or battery problems - the phone is 2-3 years old...
Edit : Further messing about suggests the battery is completely hosed...
Every few days, it randomly powers off and then wont turn back on. When I connect a charger, I get a bootloop with the splash screen appearing/reboot cycling.
Fastboot works (although I only tried this with a charger, not a PC attached).
Eventually the phone will seem to reboot correctly (after charging for a while, rebooting into fastboot)
One thing that does seem to work is 5 minutes in the freezer... After a restart this shows that the last crash occurred with 92% battery. - but then it keeps powering off with no warning, and fastboot indicates low battery...
I'm guessing either hardware/power management issues, or battery problems - the phone is 2-3 years old...
Edit : Further messing about suggests the battery is completely hosed...
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