Solution: 1 Click on the desktop and wallpaper. In the setting interface, click on the desktop and wallpaper. Click the lock screen to sign. In the desktop and wallpaper interface, click the lock screen signature. 3 Enter the text. In the pop-up lock screen signature, enter text and click OK.

Huawei mate40pro is a mobile phone owned by Huawei. It is equipped with Kirin 9000 processor and 6.76-inch organic light-emitting diode screen with a resolution of 2772× 1344.