1. Turn on the phone and hold, and select Run.

2. Enter the running interface and click Settings in the menu bar below.

3. In the settings interface, click Run Settings.

4. Enter the running setting interface and click the background at the bottom of the running screen.

5. In the background interface, select custom background.

6. In the custom background, select a picture or color.

7. Select and click Finish to complete the customized running screenshot background kilometer.

The above are the steps to customize the background kilometer of keep running screenshot, I hope it will help you.