The black background of Huawei's mobile phone is the "dark mode". The function of this mode is to save electricity and protect eyes. The switching method between shutdown and startup is as follows:

First, turn on Huawei's mobile phone and click the "Settings" icon on the desktop.

2. After entering the Huawei mobile phone setting interface, find "Display and Brightness" and click Open.

3. After entering this interface, click "Switch" on the right side of "Dark Mode" to switch off the dark mode.

Four, as shown below, after entering the dark mode, it will become white on a black background.