1. First open the phone, then find the "Gallery" function and click to enter.
2. After entering, find the picture you want to set as wallpaper, and click the "Edit" option at the bottom of the screen.
3. Click the rotate icon in the editing interface to rotate the picture and save it.
4. Then turn on the "Desktop and Wallpaper" function in the phone "Settings".
5. Finally, find the rotated picture in the wallpaper interface and set it as wallpaper.
Taking Apple 1 1 and IOS 14.2 systems as examples, the method of changing horizontal screen into vertical screen wallpaper:
First turn on the phone, then find the "photo" function and click enter. After entering, find the picture you want to set as wallpaper and click the "Edit" option in the upper right corner. Click the image rotation icon in the lower left corner in the editing interface, then rotate the image and save it. Then open the "wallpaper" function in "Settings", and select the previously rotated picture as the wallpaper in the "camera film" of the wallpaper interface.