iPhone — ‘Low Power Mode’ For Fun And Profit
iOS 9.0 introduces Low Power Mode. Low Power Mode extends battery life considerably by disabling many background tasks, such as fetching/refreshing email, turns off some intensive visual effects, blanks the screen more quickly and slows the processor down.
In previous versions of iOS, if you knew you needed to conserve power, you would manually turn various settings off, enable Airplane Mode, close applications, and change email polling settings. Now all that can be done with one option.
In Low Power Mode, the battery level is shown in yellow instead of green.
By default, when the device's battery level reaches 20%, it will prompt to switch to Low Power Mode. When the device is being charged, Low Power Mode switches off when it reaches 80%.
But Low Power Mode can be enabled at any time by going to Settings → Battery.
In iOS 11, Low Power Mode can also be added to the Control Centre under Settings → Control Centre → Customise Controls. Then Low Power Mode can be more readily enabled/disabled by swiping up to access Control Centre.
Low Power Mode is excellent for:
In Low Power Mode, you will still receive calls, messages and notifications. (If you want to quieten these, switch on Do Not Disturb.)
Low Power Mode is not useful for:
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