Did anyone encounter that the phone auto reboot on and off, continuously for numerous time after the update to Oreo 8.1?
I notice it happen to me when the phone was automatically updating the apps.
Happen randomly but once it starts, the restart will happen for a lot of time, within the span for 30mins.
The system seems to be not responding when i try to use it, after the reboot. Then it will freeze then reboot again.
The phone must not auto reboot, regardless of OS version.
I suggest first consider that a poor quality or defective SD memory card, or a defective SIM card can cause reboots.
Next, please make sure to backup all personal files and try a factory reset of the phone. Claim the warranty and have the phone inspected by a technician if you can't sort it out yourself?