iPhone 6 very slow with IOS 11 update

After receiving IOS 11.01.1 on my MGCT2LL/A1522 (iPhone 6), my phone is super slow. Apps hang, then close (like the Starbucks app), my purchased music would just stop in the middle of a song, then I had to close the app and re-open.

In general, everything is very slow to respond, and I have rebooted twice.


Any suggestions

Posted on Oct 1, 2017 5:02 PM

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Question marked as Top-ranking reply

Posted on Oct 11, 2017 9:03 AM

HERE'S THE FIX: Go into Settings> General> Reset> Reset All Settings (this will reset iOS settings, won't touch your apps)


WHAT THIS DOES: This will *not* erase your phone, but will reset most of the things you can adjust in settings on iOS (you'll need to re-enter you wifi, adjust notifications and privacy settings again, reset your default account for Calendar and Notes, etc, but all your email accounts and iCloud account will still be logged in and all working).


FIXES THIS ISSUE: I had the same issue: iPhone 6S. Upgraded. Even with 25GB free, I'd press a button and often have to wait 1-3 seconds for a response, or copy and paste selectors would be really slow to appear, even the keyboard was unresponsive... phone was barely unusable, literally. I think most people don't get it because most who updated to iOS 11 noticed it being a little slower but not 90% slower. Those like us need to take this step.


BACKGROUND: When I was scouring I found that erasing your phone and restoring from backup worked for people on Reddit, and that should be reliable. I was in the process of doing that myself and accidentally chose "reset all settings" instead of "erase all content and settings". My phone rebooted and all my apps are fine, just needed to go through iOS settings and readjust things.


ALTERNATIVES: This is obviously better than either (a) downgrading to iOS 10 or (b) making sure your phone (as it is now on iOS11) is backed up to iCloud, erasing it, and restoring from that backup.


The difference in speed is shocking.


Pretty sure this will work for you too.

733 replies

Dec 22, 2017 9:17 AM in response to donalan

Now why would Apple do that? Seriously. They are in the business of selling product, getting you addicted, adding a few bells & whistles to justify your buying new and additional hardware while slowing down your existing hardware to make it a little less effective. All the while, they raise prices slightly across the board- it is a brilliant business strategy...

Dec 22, 2017 8:36 PM in response to El Paso Steve

I had this issue and it is very disappointing. I am monitoring Apple's actions. They are still top tier in many ways but I want to upgrade my devices on my terms, as their prices are high, especially for Macs. I am a iphone, iwatch, ipad user but recently switched to PC from my Mac which was a good decision (I hate to say it). Are there compelling reasons to move to the Google ecosystem (Android)?

Dec 23, 2017 11:09 AM in response to jnajdzion

The ONLY way this gets fixed is for Apple to take responsibility for the upgrade error. They have been leading me down the primrose path for 2 months now, costing me hours of my time to fix THEIR problem. Now they want me to go to the Apple store in the middle of the Christmas rush for ANOTHER diagnostic test. No - there is nothing about my phone that they don’t know by now. I am demanding action up the chain of command at Apple. Apple knows exactly what is happening, their approach at this point is attrition- to see how many upset customers actually push back.

Dec 23, 2017 2:16 PM in response to Uboat CT

I wonder what is so essential in iOS11 that couldn't be turned off for the iPhone 6, it worked perfectly well with iOS10, so there is no reason why it couldn't be so under IOS11. Mine is now pretty useless, I can type faster than it can display what I type, etc... I won't upgrade, this after owning a 3, 3GS, 2x4S, 2x6, 2xiPad, 1xMac Mini, 2xMacBooks, 1xWatch, 1xAppleTV... It must be possible to release an iOS update to fix this properly !!!


Sure, I could have avoided the update altogether, although I was prompted while running a GPS navigation app and driving. It was raining, dark and late so not an ideal time to look at what it was asking me to do (not that it would have been safe any other time anyway), so I inadvertently asked the phone to update later and woke up to a new iOS and very slow iPhone6.


The irony being that in the morning, it told me of a new iOS11 feature that could disable notifications while driving...


Apple, time to fix this or I could be tempted back to Android and giving up my app developper account. Honestly... you can do better than this.

Dec 23, 2017 3:16 PM in response to El Paso Steve

Have 8 members in my family with iPhone 7’s all updated to OS11.2.1 and now all running slow as molasses. Way to **** off a whole lot of users Apple! We own Apple desktops, laptops, my office is all Apple, now a significant number of family members and friends who are Apple users are talking about migrating to Samsung Android. Apple better come up with a solution and quick! Class action suits are already in the works.

Dec 23, 2017 6:24 PM in response to Philly_Phan

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Dec 23, 2017 6:29 PM in response to donalan

donalan wrote:


Terms of Use


  1. Be polite. Everyone should feel comfortable reading Submissions and participating in discussions. Apple will not tolerate flames or other inappropriate statements, material, or links. Most often, a "flame" is simply a statement that is taunting and thus arbitrarily inflammatory. However, this also includes those which are libelous, defamatory, indecent, harmful, harassing, intimidating, threatening, hateful, objectionable, discriminatory, abusive, vulgar, obscene, pornographic, sexually explicit, or offensive in a sexual, racial, cultural, or ethnic context.
  2. Post constructive comments and questions. Unless otherwise noted, your Submission should either be a technical support question or a technical support answer. Constructive feedback about product features is welcome as well.

Your posts are not constructive and make me feel uncomfortable.

Dec 26, 2017 10:58 AM in response to Skindles71

I completely agree. Apple has screwed up big time and no innovation since Steve is gone. They are upsetting consumers now by slowing their phones down. These consumers were loyal and now have no loyalty.

My entire company of iPhone 6 are moving to Google Pixel 2 phones. They should have done more testing and not allowed iPhone 6 or 7 to update.

Sorry Apple but your going downhill and fast!!!

Time for consumers to jump ship before it sinks!

Dec 28, 2017 8:00 AM in response to Serolio

Hey Serolio,


After upgrading to the latest IOS over the Xmas, my iPhone 6 is behaving ridiculously badly. Basically, it freezes on and off, and when you press any of the apps different apps open up, you click on settings but different menus appear. In other words it's not only slow but acts on frolics of it's own.


I suspect Apple have done some sort of a fix to slow down the battery (as admitted by Apple already) for the "better" customer experience but in fact not only they've fed my phone with dodgy virus to slow down the battery but messed up the entire phone's software working system. The phone became totally unusable. It just shows one thing and how unscrupulous Apple are - they want us to buy a new phone that is well overpriced and technologically behind their rivals on price, quality and honesty.


I have applied the fix as per your advice in the post, however, this is my result:

1. It does initially speed up the phone as it clears a lot of unwanted settings

2. The apps and buttons behave in an unexpected manner - don't open up or load after few minutes when not required, open links that are not needed, etc... Nothing materially changed since applying the fix as far as those problems concerned.


All I can say at this stage to whoever wants to apply this fix is - DO NOT BOTHER, it will not fix the issue nor remove the VIRUS that the Apply have implanted in your handset. All I can think of at this stage is going to the Apple store and ask them to fix it (hopefully free of charge), and failing that join the others affected by the issue to take class action against the disgraceful company.


In any case, I suspect after this experience, it'll be my last iPhone ever. I'll be switching to android phone (possibly Samsung) as my trust in Apple's products and services are permanently broken.

Dec 28, 2017 2:08 PM in response to olivierfrommerelbeke

The only way they could save themselves and their customers is to cover the cost of the new battery replacement.

This is a terrible mistake on their part simply due to lack of testing their new iOS on all their devices so they could plan and mitigate these issues. Certainly says something about the poor quality of the Snr Managers and Test and QA managers at Apple now. Jump ship before it sinks. I'm ready for my New Google Pixel 2!

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iPhone 6 very slow with IOS 11 update

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