iOS 9 has some significant new power saving features that will lend users up to an additional three hours of battery life. Dubbed Low Power Mode in iOS 9, users can eek out up to an extra 3 hours of battery life with the option enabled.
Low Power Mode works by disabling animated wallpapers, Mail Fetch, Background App Refresh, motion effects, and, as recently discovered, throttling the CPU.
Power Saver Mode, a new iOS tweak developed by Elijah Frederickson, tries its best to provide many of the same benefits to jailbroken iPhone users on iOS 8. Power Saver Mode increases contrast, enables Reduce Motion, disables Background App Refresh, location services, Cellular Data when on Wi-Fi, and more.Â