Forget About Low Power Mode — Use Adaptive Power Instead 

Low Power Mode has long been a useful tool that turns off background tasks in order to give you more battery life on your iPhone. However, with iOS 26, Apple introduced Adaptive Power, which is much more subtle. 

Instead of shutting things down completely, it will instead reduce brightness, slow non-essential processes, and balance performance in the background. You’ll barely notice it’s active, but your battery will last longer during heavy use.

Your iPhone will do this by learning when you’re consuming more battery power than usual, and automatically adjust various features to help your battery last longer. If everything else fails, it will automatically turn on Low Power mode when you’re near the end of your battery life.

Activate it by navigating to Settings > Battery > Power Mode and enabling Adaptive Power. Your iPhone will then manage itself automatically, stepping in only when needed. Note that this feature requires an Apple Intelligence-enabled device, which means an iPhone 15 Pro or newer model.