1, open the settings - wallpaper, as shown in the picture below;

2, at the bottom of the camera roll - select a new wallpaper, open the photo gallery;

3, in the album to find a favorite picture, choose to set the lock screen, set the home screen or set at the same time, to complete the setup;

The second method2

1, Open the album, select your favorite photo, click the "up" symbol in the lower left corner;

2. Click the "Use as wallpaper" option below and select Settings;

3. After clicking Settings, select Settings to lock the screen, Set home screen or both to complete the setup;

4, Set the home screen or both, to complete the setup;