No sooner did we do a factory reset on my son's phone, but it stopped on us again.
To refresh your memory, my son's phone is a dead stock T Mobile HTC One, never unlocked, never rooted, dead stock.
A week or so ago, it went into a boot loop from which we could not recover. We did a factory reset and everything was fine, for a moment. My son went about reassembling his contacts, music, etc., making sure they were properly backed up this time.
After the factory reset, everything seemed to work fine, for a time. But then the first time my son powered off his phone, charged it overnight while off, and tried to power on again, the PIN unlock screen won't come up, so he can't open his phone.
We can get to the bootloader and to the recovery. Tried wiping the cache from recovery mode, but that didn't help.
Is it time for another factory reset? Is there anything that would have potentially caused both problems loading Android/Sense (the boot loop from before and the failure of the unlock keypad this time) that we should investigate?
I love my own HTC One, but my son's opinion of his is quite different, and it's straining family relationships.
Any thoughts? Thanks in advance.