I'm on T-Mobile. The update was Monday. Starting about last night my phone is powering down or restarting every 10-20 minutes if it is idle. When I'm on it there's no issue. I cleared my cache partition. Is the next step factory reset?
The next step would be to do a complete backup of the phone. I would test the phone in Safe Mode first to ensure there are no apps causing the problem, then if the issue is still there do the factory reset.
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