How to solve if the mobile phone auto turn on when turn off and charge?

Solutions:
This situation is not a hardware problem, but is generally caused by abnormal system software. It is advised to do the following:
1. Confirm whether the version of the mobile phone system is the latest version; if not, it is suggested to update to the latest version.
2. It is recommended to use the original charger and data cable to try whether there is such a issue.
3.  Restore Factory Settings after backing up data.
4. If all the steps failed, it is suggested to go to after-sales center for inspection.