My S4 started acting weird a couple days ago. It would occasionally self-reboot when I woke the phone by the home button or the power button. During those self-reboots, the AT&T logo seemed to stay longer (probably a couple minutes) than a normal reboot but everything was fine afterwards (could still use the phone for hours without triggering another self-reboot).
The situation went downhill quickly today and now it always gets stuck at the AT&T logo. Press and hold the power button will reboot the phone until the AT&T screen and the only way to turn it off is removing the battery. I can still charge the phone but sometimes instead of showing a charging battery icon, the phone will power on when I press the power button.
I've tried a few tricks (remove SIM and microSD card, pull battery, boot into recovery and wipe cache partition) but none worked. In the beginning, I did manage to boot past the AT&T logo a few times (self-reboot with home/power button still persisted) but no luck since this afternoon.
Since I haven't made any changes to the phone in the 2-3 weeks before the above problem occurred, can this be hardware-related (like a bad battery)?
And at this point, is it still possible to unbrick the phone without wiping the data?
Thanks for helping!
The situation went downhill quickly today and now it always gets stuck at the AT&T logo. Press and hold the power button will reboot the phone until the AT&T screen and the only way to turn it off is removing the battery. I can still charge the phone but sometimes instead of showing a charging battery icon, the phone will power on when I press the power button.
I've tried a few tricks (remove SIM and microSD card, pull battery, boot into recovery and wipe cache partition) but none worked. In the beginning, I did manage to boot past the AT&T logo a few times (self-reboot with home/power button still persisted) but no luck since this afternoon.
Since I haven't made any changes to the phone in the 2-3 weeks before the above problem occurred, can this be hardware-related (like a bad battery)?
And at this point, is it still possible to unbrick the phone without wiping the data?
Thanks for helping!
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