Wallpaper & Battery: OLEDs Save with Dark, Live Wallpapers Drain

• Live or animated wallpapers significantly drain battery (10-25% more) due to continuous rendering and active CPU/GPU, especially on high refresh rate screens.
• Static photo wallpapers have minimal impact on battery life; drain is mainly from screen brightness and app usage.
• On OLED/AMOLED screens, dark or black wallpapers save battery by turning off individual pixels, while bright wallpapers consume more power.
• LCD screens have a constant backlight, so dark and light wallpapers consume roughly the same amount of battery.
• High-resolution wallpapers can slightly increase GPU load, particularly on older or low-end devices.

Why It Matters: Dark wallpapers save battery on OLED screens; live wallpapers drain it.