You can change the background image on your home screen or lock screen.
Touch & hold a blank area on your home screen, then tap 
Tap 
Some dynamic wallpapers play motion for several seconds then pause. To start or pause motion, touch the screen.
If your battery is low, temporarily change wallpaper to a static image to save power. Or, touch the wallpaper to pause its motion, if supported.
Stylize your photos with AI visual effects and use them as wallpaper.
