1. Download and save your selected Wallpaper to the “Photos” app on your iPhone.
2. Open the “Settings” app and select Wallpaper option.
3. Then select Choose a New Wallpaper option.
4. Find and press on your Wallpaper from "Photos" app. Then tap on the Set option.
5. Select Set Home Screen.
6. Done! Go back to your home screen and see your new wallpaper!