iOS 11 battery drain is a real problem, study shows


Big new software upgrades might be awesome and exciting, but they are often accompanied by some unpleasant teething troubles. Apple's introduction of iOS 11 is the latest example of this, as many users reported a variety of problems after they updated to the latest version of the software. 

One of the most commonly experienced issues seems to be related to battery drain. This could be attributed to things like the Spotlight search feature needing to re-index all the files on a given device or recalibration of the battery charging mechanism which usually concludes after a few recharges. 

Normally, such early-stage ailments disappear quickly, but it seems that there is still an alarming number of users which continue to struggle with the battery life on their device. 


Security research firm Wandera took notice and conducted a survey which compares the average battery decay rate of devices running on iOS 10 and iOS 11. Wandera states that it has singled out 50,000 moderate to heavy users and averaged the results for a device to go from 100 to 0 percent over the course of three days. The results are startling, to say the least. 

The decay rate for iOS 11 stands at 96 minutes. That's much less than the 240 minutes achieved by devices on iOS 10. Of course, this is a rough generalization and the results will vary for each device, but the stats show that there is a real problem that is yet to be fixed by Apple. 

Cupertino has so far released iOS version 11.0.1 which addressed other issues related to Outlook and Exchange-based email accounts, but the incremental patch doesn't do much to increase time between charges. As such, if you're still on iOS 10, you might want to hold off for a little before upgrading.

Have you experienced an inferior battery life after upgrading to iOS 11? Let us know in the comments below.

source: Wandera via Neowin

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70 Comments

1. SIGPRO

Posts: 2817; Member since: Oct 03, 2012

Battery Gate! Apple you suck once again! Where is my popcorn....

3. Settings

Posts: 2943; Member since: Jul 02, 2014

At that price you expect your device to be top of the notch, but no. Apple screws you at the best problem possible.

15. SIGPRO

Posts: 2817; Member since: Oct 03, 2012

They quipped the new iphones with fast charging......but you need to buy a cable and charger separately.....apple is truly pathetic. And apple user are even worse than pathetic!

36. Leo_MC

Posts: 7432; Member since: Dec 02, 2011

Blow me! Signed: a pathetic Apple user.

49. sgodsell

Posts: 7368; Member since: Mar 16, 2013

What kills me is iPhonearena gave the latest iPhone 8's a glowing review when it came to battery. Makes you think about their battery testing. Or is it pulled out of a hat or something else? Also the quick charge is a joke on the new iPhones, especially since you have to buy an additional charger and another cable in order to get quick charging.

57. Leo_MC

Posts: 7432; Member since: Dec 02, 2011

iOS 11 works very well on the 7, not so much on the 8. The same with the battery: it might be stellar on the 8, not so much on the 7 (6 or 6P - if I recall - had the same problem with an Android release, then it was fixed). Also, Apple users like to pay for stuff, why should you care?

65. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

And it still takes longer to quick charge a smaller battery versus the Galaxy S6/7/8, and the Note 5/7/8 as well

26. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

Wait! You're usually siding with Apple and calling out people who call out Apple. But today you woke up on the wrong side of the bed and you're actually speaking against Apple? I am surprised!

34. PhoneInQuestion

Posts: 496; Member since: Aug 20, 2017

Apple had made even dumber decisions with the iPod Shuffle (3rd gen anyone?), but to call being behind the staple hardware features "value for what you get" is corporate arrogance. Tim should just let some other higher-up speak for his product line. But if someone likes the iPhone X more power to them, not me...

47. Settings

Posts: 2943; Member since: Jul 02, 2014

Lol, you fanboys and your labels. I can praise and criticize whoever I want.

66. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

You just called people fanboys. Isn't that a label?

70. Settings

Posts: 2943; Member since: Jul 02, 2014

Fanboys of what? That's the label.

10. submar

Posts: 713; Member since: Sep 19, 2014

You're holding it wrong.

14. SIGPRO

Posts: 2817; Member since: Oct 03, 2012

You charged it wrong.

67. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

The iPhone is just wrong.

41. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

I don't think its battery-gate, because the problem isn't the battery itself.

2. dmakun

Posts: 382; Member since: Jun 06, 2011

A real problem?! Not for iPhoneArena apparently. According to their usually awesome review of Apple products the iPhone 8 has a stellar battery life

8. trojan_horse

Posts: 5868; Member since: May 06, 2016

Why so brutal, man? Damn.

27. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

The truth is brutal.

12. kiko007

Posts: 7493; Member since: Feb 17, 2016

Battery life issues aren't necessarily a universal thing. Check out the iPhone sub-reddit where some users are reporting 12-18 hrs of usage time with the 8+, which is REALLY good. That's like 8 hrs SOT for Android users, the sweet spot IMO. Having said that, iOS 11 has been a total crapfest early on. They somehow managed to make their new phone SLOWER than their old one... f**king incredible.

21. threed61

Posts: 259; Member since: May 27, 2011

I haven’t had battery issues on an 8 Plus or a Pro 10.5, but I agree, they are slower than they should be.

37. Leo_MC

Posts: 7432; Member since: Dec 02, 2011

iPhone 8 has a software related issue, iPhone 7 is faster on 11 than it was on 10.

43. uncle_gadget

Posts: 1050; Member since: Sep 20, 2017

How many apps do you have installed? I have 220 apps installed on IOS11 on iPhone 7+, and I can say it is slower. The animations are slower/gittery. Typing is slower (keyboard lags out much quicker).v Less RAM is available to apps now, because the operating system uses more RAM. Which means now the 3GB of RAM holds are less which has been shown here: https://www.youtube.com/watch?v=yjfVv2RPaGE Also I was shown this link recently, its somethign all iOS users should consider if it is true or not. Even though I never liked Chris, he makes a very good arguemnt. https://www.youtube.com/watch?v=x0JxHq-nR98

54. tedkord

Posts: 17357; Member since: Jun 17, 2009

220 apps? I thought I had a lot at about 80. And of those 80, there are probably 20 I use with any regularity.

58. Leo_MC

Posts: 7432; Member since: Dec 02, 2011

I don't know exactly, around 100. The only difference I see is in the animation when opening the apps and the only app that I had problems with is Facebook. Maybe you should erase your phone and see how that works.

4. jove39

Posts: 2146; Member since: Oct 18, 2011

I faced this issue, factory reset helped a little but battery life is not as good as iOS 10. It still drops nearly 40% faster (comparing battery remaining by EOD).

5. kiko007

Posts: 7493; Member since: Feb 17, 2016

It's been hit or miss with me. Some days, battery life is REALLY good. Other days, it's a total s**tshow. Then again, I've the 7+ and not the 7 or 8, so my battery life has always been at least decent up until 11 dropped. Apple has really gotten ahead of themselves and forgotten what got them their customer base in the first place: good... stable... SOFTWARE!!! Well, customer support too, but that's besides the point. Should've just dropped the iPhone X next year and polished the software until they could procure more resources for it's release.

16. maherk

Posts: 6879; Member since: Feb 10, 2012

My iPad Pro 10.5's battery life was great before iOS 11, and after I updated it, it got even better. I still have the clear notifications bug, but as for battery life, I can't complain one bit.

29. ph00ny

Posts: 2031; Member since: May 26, 2011

Wife's 7+ battery life post ios 11 is crapshow too. Also the phone function went to total s**tshow when she tried to call her mother. Multiple tries later, she ended up restarting the phone

6. palmguy

Posts: 982; Member since: Mar 22, 2011

And Apple fans joke about Android's updates. Apple makes you guys afraid to update.

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