Lower Your Screen’s Brightness

One of the fastest and easiest ways to save battery life is to lower your brightness. Combine this with using Dark Mode or any of the other tips on this list, and your iPhone’s battery life should last substantially longer when you really need it.

To lower your screen brightness, just open the Control Center by swiping down from the top right side corner of your screen (if your iPhone has Face ID) or swiping up from the bottom of your screen (if your iPhone has Touch ID), and swipe the Brightness slider down until you reach a point where you can still see your screen comfortably without using too much illumination.