First, use your own wallpaper.

1, go to Settings > Desktop and Wallpaper > Wallpaper.

2. Choose a picture.

3, according to the need to choose:

Blur: Blur the wallpaper. Slide the slider to adjust the blur level.

Scroll: Let the wallpaper slide with the screen.

4. Click √ to select the setting as lock screen, desktop or both.

Second, set the photos in the gallery as wallpaper.

1, enter the gallery and find your favorite picture.

2. click more > set as > wallpaper, and complete the setting according to the screen prompts.