Use dark mode to preserve battery

Lots of smartphone users switch their display to dark mode because they find it easier on the eyes. But, it can conserve your battery life, too. Organic light-emitting diode (OLED) devices use individual light-emitting diodes to light the screen, which means that less electricity is used in dark mode because fewer bulbs are at work.

In fact, researchers at Purdue concluded in a 2021 study that OLED screens utilize between 44% and 73% of the device’s total battery when light mode is activated at maximum brightness. Keeping the phone at 100% brightness but in dark mode reduces power consumption by over 40%.