How to set the back button under Huawei p40?

Huawei P40 mobile phone provides full-screen gesture mode and virtual navigation bar mode (including enter key). Mobile phones default to full-screen gesture mode, so setting the Enter key requires changing the operation mode in the system settings. The specific operation method is as follows:

1. Open the setup menu of Huawei P40 mobile phone and drop it down to the bottom selection system.

2. Open the system navigation option in the system menu, and click to select three-key navigation in the screen.

3. Click more settings below, and select the navigation key combination according to actual needs (the default is to return to the left, return to the main screen in the middle, and enter multi-task management on the right).

4. If the three-button navigation on the screen is turned on in the settings, but the navigation key does not appear at the bottom of the screen, it may be that the user has set the automatic hiding function, and you can try to slide up from the bottom of the screen to restore the display.