The specific operation method is as follows:
Open the phone settings;
Enter the "General" setting;
Find "Auxiliary Functions" on this page and click to enter;
Find the auxiliary touch option and enable this function;
Return to the mobile phone desktop, click the assistive touch beside the screen, and click "Device";
Press and hold "Lock Screen", the shutdown page appears, and slide the slider to the right to shut down;
After power off, use the data cable to connect the computer to start up, or long press the home key to start up.