Unbelievable. I wonder if Gary02468 was right when he said on February 12: "For several years now, some Note and S models have had a problem where some fundamental part of the system stops working for a minority of users. Sometimes it's camera functionality that breaks, sometimes keyboard response, sometimes fingerprint recognition, sometimes display auto-rotate, or some other low-level behavior.
The common thread is that the problem clears up for a while after a reboot, but returns within a few hours or days. It doesn't happen in Safe Mode, but no responsible apps have been identified, despite comparing different affected users' setups and despite affected users systematically removing and restoring apps to investigate.
The problem, for those who encounter it, is not solved by cache clearing, factory resetting, or even device replacement--it seems somehow tied to particular users' accounts. Possibly a driver-level bug is randomly corrupting some resource in a way that's randomly affected by some aspect of the user account.
I hope we're not seeing a return of this problem here. But if a few others are reporting the same thing as you, it's possible. The test will be whether a factory reset solves the problem for you."
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