iOS – How to turn on low-power mode?
There’s nothing more frustrating than a red battery icon on your iPhone. But in iOS 9 it doesn’t have to send you into a panicked search for an outlet. Much like Apple Watch, Apple has introduced a new Low Power Mode in iOS 9 that helps squeeze out every bit of juice remaining in your battery. Flip it on (inside the battery settings, which has moved to its own tab under Touch ID in the main Settings) and your iPhone’s battery icon will turn yellow, indicating that it is conserving energy by reducing performance and networking activity, including Mail fetch, background app refresh, motion effects and animated wallpapers. And if you don’t turn it on yourself, Apple will prompt you once your battery dips below 20%.
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