1. Open the settings and click on the wallpaper.
2. Enter the wallpaper page and select a new wallpaper.
3. Click on the photo album to enter.
4. Select one and open it.
5. Enter the preview interface and click Settings in the upper right corner.
6. When the menu appears, click Settings to lock the screen.
7. Click Settings-Wallpaper again.
8. Enter the page and click to select a new wallpaper.
9. Select an album to open.
10. Enter the page, select the wallpaper and open it.
1 1. Click Settings in the lower right corner.
12. Click "Set as Home Screen" so that you can set the lock screen wallpaper and desktop wallpaper separately.