1, first open the phone screen, find and open the "Settings" option, click the "System and Update" option after opening, and then click the "System Navigation Mode" option.

2. After entering, select the "Three Keys Navigation in Screen" function, and then click the "More Settings" option at the bottom of the screen to select your favorite virtual key combination according to your personal usage habits. Virtual function keys, including mobile phone menu keys, will appear in the area below the home page of the mobile phone screen.

Take iphone 1 1 mobile phone and IOS 13 system as examples.

1. The menu button of Apple's mobile phone is the Home button. To turn on the phone's Settings function, open General, select Auxiliary Touch, and then click the Home button.

2. Select the virtual function, click OK, and use the virtual point icon to operate the menu bar.

(The above methods are applicable to most models of Huawei and Apple branded mobile phones. )