The Photo app comes pre-installed on iPad and iPhones. The application allows you to set wallpaper, display pictures on Apple TV, assign contact images, and even start a slideshow. So, here are the steps to use the Photos application to create slideshow, wallpapers and add to contacts on iOS devices. Assigning Images to Contacts on the iOS Photos Application If you want to assign images to contacts on the Photos application for iOS devices, then you can follow the provided steps. ...