iOS 9 'Low Power Mode' Results in Significant Performance Reduction [Benchmarks]

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Posted June 26, 2015 at 3:33pm by Shalom Levytam

Apple is introducing a new 'Low Power Mode' in iOS 9 that will extend battery life by up to three hours, on top of the additional hour of battery life that iOS 9 is set to offer.

"Now in iOS 9 we give you a single switch in what we call Low Power Mode and it pulls levers you didn't even know existed and is able to extend battery life for an additional three hours of typical use on top of that additional hour."

With Geekbench 3 updated to support iOS 9, MacRumors was able to benchmark an iPhone 6 Plus running with Lower Power Mode on and off.

Without Low Power mode activated, an iPhone 6 Plus scored 1606 on the single-core processor test and 2891 on the multi-core processor test. When Low Power mode was turned on, the same iPhone 6 Plus scored 1019 on the single-core test and 1751 on the multi-core test, suggesting there's a significant performance reduction when Low Power mode is enabled to save as much battery as possible.

Results on an iPhone 5s were similar with performance reduced by about 40%.

Users are prompted to enable Low Power Mode when an iPhone drops to 10 or 20 percent battery level and it can manually be enabled from the Battery section of the Settings app.

Apple will release iOS 9 to the public this fall. Please follow iClarified on Twitter, Facebook, or RSS for updates.

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iOS 9 'Low Power Mode' Results in Significant Performance Reduction [Benchmarks]

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bigjiba - June 27, 2015 at 12:17pm

feature stolen from cydia tweak. thanks jailbreak community.

Zaw Htet Aung - June 29, 2015 at 2:30am

Which feature tweak?

Woz - June 27, 2015 at 1:15am

3 hours? HTC does two weeks.

Name14 - June 28, 2015 at 12:37am

With zero performance - nice...

detective sims - June 26, 2015 at 9:37pm

Why is this headline a surprise to anyone?! If you want to extend your phones life with the battery so low, you have to sacrifice performance.

What142 - June 26, 2015 at 8:29pm

So Samsung had this two models ago. It makes you wonder who is copying who now.

Wah - June 27, 2015 at 12:05am

Samsung had it because it needed it. I'll use it because I always underclocked my PCs, then MacBooks, and like my stuff cool ;P

Stealther - June 27, 2015 at 2:57am

I wonder if IPhone can be underclock, you will do it or not?

monkUsa - June 27, 2015 at 1:26pm

That's true... Samsung did have this for a while, and so did some of the other Android devices. I'm glad that iOS is doing the same. This is how the game is played... Apple takes features from other devices and implements into their device. Then Android phone manufacturers take the new features that Apple introduces and puts it into theirs. This is how it has always been, and how it always will be. Live with it and enjoy future enhancements (on any device) as they happen. From your friendly iPhone, iPad, iMac and Galaxy Note 3 user.

gamerscul9870 - June 26, 2015 at 7:55pm

I find this necessary. Angry birds games run a bit too fast for the rate of the gameplay speed I am used to. I would want it to run as if it performs like the a7 chip would in the upipad air.

Keno - June 26, 2015 at 6:33pm

That's expected...

Great! - June 26, 2015 at 4:57pm

So an iPhone 6 will run like an iPhone 5 since it is more than 2 times faster to begin with.

Stealther - June 27, 2015 at 2:58am

Apple, just admit your batteries not not good enough

Name14 - June 28, 2015 at 12:40am

How long does your battery last? iPhone 4S over 4 yrs old and still original battery - same batterylife...