A white battery icon means your iPhone is in "standard" power mode and red indicates a battery that is below 20%. But, when your iPhone battery is yellow, this means you've (somehow) enabled Low Power Mode, which is designed to preserve as much battery life as possible. Most importantly, this doesn't. Ready to send the iPhones yellow battery icon packing? Luckily, Low Power Mode will automatically turn off when your iPhone rises above 80%. When you enable Low Power Mode, your iPhone goes into power-saving mode. The Auto-Lock delay is reduced to 30 seconds, your display brightness is reduced, and the refresh rate on. If your iPhone battery life is worsening over time, consider replacing your battery. On top of this, there are a few other tips and tricks for getting the. If you like the idea of saving battery life but don't want the hassle of disabling or enabling it manually, automate it with Shortcuts. To do this, launch the Shortcuts app and tap on the.