1, after the upgraded version of the mobile phone, there are a lot of data to be updated. If more software was originally installed on your mobile phone, it will take more time to process the data after the system is updated.
2. Connect the original charger and pay attention to the status of the mobile phone. If the phone has a serious fever or can't access the system for a long time, please unplug the adapter in time and go to the after-sales inspection for processing.
3. If it is not the problem of cycle restart after system update, you can try to enter the REC by holding down the power+volume down key and select the safe mode to enter. If the safe mode can be turned on normally, press and hold the power button in the safe mode to try to restart.