2. Then enter the information operation interface, click the left key (menu key) on the phone body, select "Settings" in the pop-up menu, and click Open.
3. After entering the setting operation interface, find the "Basic Settings" option and click Open.
4. After entering the operation interface of basic settings, find the "wallpaper" option and click Open.
5, the system pop-up picture selection menu, select the picture location menu item.
6. Select a wallpaper image, click Open, and the setting is successful.
7. Back to the original SMS window, you can see that the background image has been replaced.