1. Charge the phone for half an hour, then press and hold the power button to see if it can be turned on. 2. When the mobile phone is turned off, press and hold the power button and the volume reduction button for about 10 seconds at the same time to enter the recovery interface, use the volume button to select to restart the mobile phone, and use the power button to confirm to restart the mobile phone. 3. If the above operation cannot be started, you can go to the local after-sales service for help.