Open settings
Open the settings application of the mobile phone and enter the "wallpaper" option.
Select a new wallpaper
In the "wallpaper" option, click "Select a new wallpaper" and you will see a brand-new page.
Choose your favorite wallpaper.
In the beautiful wallpaper library, choose your favorite wallpaper and save it.
Select a photo from an album.
In the "wallpaper" option, you can choose to select photos from the album or directly from Apple's wallpaper library.
Adjust the wallpaper to fit the screen size.
Select the wallpaper you like, and then adjust it to suit your screen size.
Complete the wallpaper setting.
Click "Settings" and then select "Lock Screen", "Home Screen" or "Both" to complete the wallpaper setting.