Wallpaper settings let you set an image or photo as wallpaper for the Lock screen or Home screen. You can choose from dynamic and still images.

Change the wallpaper. Go to Settings > Wallpaper > Choose a New Wallpaper.

The Lock screen and Home screen showing the current wallpaper

When choosing an image for new wallpaper, the Perspective Zoom button determines whether your selected wallpaper is zoomed. For wallpaper you already set, go to the Wallpaper setting, then tap the image of the Lock screen or Home screen to see the Perspective Zoom button.

Note: The Perspective Zoom button doesn’t appear if Reduce Motion (in Accessibility settings) is turned on.

Play a Live Photo on the Lock screen. (iPhone 6s and iPhone 6s Plus) Go to Settings > Wallpaper > Choose a New Wallpaper. Tap Live, then choose a Live Photo or choose one of your own Live Photos (under Photos). Tap Set, then tap Set Lock Screen. When on the Lock screen, press to play the Live Photo.