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Your iPhone uses Low Power Mode to extenditsbattery life. Some features work differently in LowPowerMode — for example, your phone won't fetch emailunlessyou manually ask it to. You can easily turn on LowPowerMode at any time. Your iPhone will automatically leaveLowPower Mode once you reach 80% charge.
Similarly, you may ask, what does low power mode actually do?
Low Power Mode reduces the amount ofpowerthat your iPhone uses when the battery gets low.To turnLow Power Mode on or off, go to Settings >Battery. WhenLow Power Mode is on, your iPhone willlast longerbefore you need to charge it, but some features mighttake longerto update or complete.
Similarly, what is the use of low power mode in iPhone?
Apple's Low Power Mode, introduced iniOS9, lets you flip a switch to temporarily reduce thestrain on yourbattery by disabling a number of high-demandfeatures. Your phonewill automatically prompt you to enter LowPower Mode whenyou hit 20 percent, but you can also enable itmanually viaSettings > Battery.
Of course not, the iPhone charger doesnotcharge the iPhone slow in Low Battery Modeorwhen the battery is low. Do not over chargeorcompletely drain your device it will increase batterylifeas well. If possible, put your phone on Airplanemodefor 30 minutes to get the boostcharge.