If you’re looking for a new rainbow wallpaper for your iPhone, you have come to the right place. Downloading your new wallpaper is quick and easy. Simply visit your device’s wallpaper gallery, touch a wallpaper you like, and hold it there for about two to three seconds. A popup will appear containing different options. Select download to start the download. The wallpaper should start downloading in about a minute. You can also purchase it as a full-size wallpaper.