1. Take the vivoX5Pro mobile phone as an example, light up the screen of the mobile phone, find the I theme in the standby interface, and click Open.

2. In this interface, find the "My" option in the lower right corner and click Open.

3. In this interface, find the "local screen lock" option and click Open.

4. In the local screen lock interface, find the option of "light simple or light pleasant" and click Open.

5. Return to the screen lock interface of the mobile phone, click the screen lock avatar slide to pop up the avatar selection interface.

6. Locate the "+"icon on the left and click Open.

7. Enter the screen lock nickname in the "avatar" input box, and click "Save Options" in the upper right corner.

8. Finally, after setting the lock screen interface, you can display the added text.