1, it may be caused by the temperature of the environment where the phone is too high or too low;
2, it may be caused by temporary problems in the mobile phone system software;
3, it may be caused by the mobile phone system for updating;
4, mobile phone charger problems can also lead to this situation;
5, there may be a fault in the phone itself.
The reason is that there is a problem with the charging display of the Apple phone system. If you encounter this problem, it is recommended to re-brush the Apple phone system to solve it, open the Apple phone Settings, enter the general, press restore to erase all contents and Settings, and restore the phone factory Settings