3 Change Your Wallpaper
Applying Apple’s official “true” black wallpaper to your homescreen and lockscreen is a simple way to squeeze more life out of your battery. Tests have shown that displaying white on OLED displays consumes more battery life than other shades.
- To do this, simply open Settings.
- Tap Wallpaper.
- Tap Choose a New Wallpaper.
- Tap Stills and select the true black wallpaper option.