Apple 13 can change the wallpaper for the mobile phone in the settings, as follows:

Tools/materials: iPhone 13, iOS 15.2, settings 1.0.

1, click on the wallpaper

Click to enter the phone settings and find "wallpaper".

2. Click to select a new wallpaper.

Click to enter, and then click "Select New Wallpaper".

3. Click OK.

In the pop-up page, we can select our favorite pictures in the camera or other folders, and click OK to make them a new theme.