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
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.
Hello everyone,
iOS 11.2 was recently released today, and for performance issues I recommend keeping your device up-to-date using Software Update.
The latest version of iOS is: iOS 11.2 (15C114)
Thanks,
Vis
Holy **** this is a real SCANDAL !
https://9to5mac.com/2017/12/10/iphone-6s-slow-down-battery-fix/
Shall I put the definition of scandal here : [an action or event regarded as morally or legally wrong and causing general public outrage.]
So basically, Apple has miscalculated the size and global power envelope of the battery in the iPhone 6 and 6s and that caused sudden power off of iPhones last 2 winters like no other phone has seen before. So since 10.2.1 they added battery evaluation within the OS to UNDERCLOCK the processor to make the sudden shutdown disappear. It’s like if you basically buy an i7 cpu and one year after it transforms in an one core i3 cpu :-O
"Hello again Cinderella" should say their adds.
The Apple Store changed my battery 11 months ago and I see this problem since iOS11 (I’ve jumped over 10.2.1). So that makes an iPhone 6 better/faster(for everyday use) than an iPhone 4 for only 9 or 10 months.
Now (after a battery is 11months old) my iPhone 4 starts Message,Phone,Calendar,etc... way faster than my iPhone 6.
Come on Sir Johnny Ive, were those 2 mm of thinness really worth that JOKE !
And why did the end user agreement of iOS 10.2.1 / 11 didn not talked about this change of hardware management which kill the phone usability. I think there’s pretty large place for a class action here.
This would have been okay if imperceptible but it’s clearly not the case.
+ iOS already has a "Low power mode" from its battery menu, and this new power management takes the decision ability away from the user.
Now It also make sense that resetting system settings makes the phone faster again : without statistics and recording of the battery, the underclock is not happening ...until a few charges, when iOS will remind the device thats it’s no royal eagle anymore but a small sparrow just good to be dumped. This story will end up with infuriated users who will the earth while seeking revenge against a company too big to be fight back.
Well that’s the twist, it won’t be fixed !
That power / performance policy was specifically introduced by Apple starting from iOS 10.2.1 to avoid sudden power shutdown that was affecting all iPhone 6 and 6s. Twisting a software is less expensive than to change millions of batteries under warranty or the risk of a class actions.
Reverting this power management algorithm would just reenable the sudden power failure.
As for the battery mine, is 11 months old (changed but Apple) and the iPhone slow since 2 months. So you have your answer...
So,
It turns out that iOS 11 issues on iPhone 6/6s ARE battery related if you are no longer experiencing iOS 11 performance issues using a battery case that is keeping your iPhone 6 continuously charged at 100%
Kinda confirms Visberry’s hypotheses on iPhone 6/6S degraded battery isuues causing the poor iOS 11 performance.
Looks like Visberry’s theory/hypothesis on iPhone 6/6S battery issues affecting iOS 11 performance were “spot-on”!
You are right. The CPU dropped to 830 MHz at about 90% battery and then to 600 MHz at 70% battery.
However, the factory reset fixed my other problems. Before reset, CPU was running at 600 MHz at full charge, home button was unresponsive more than once a day and “Hey Siri” was misbehaving. e.g. If I say “Hey Siri, what is the time?” Siri would wake up but would not have heard the time request. It would sit there waiting for me to say something. I just tested Hey Siri by plugging in the power with battery at 60% and it worked. It woke up, parsed the request and responded.
After 24 hrs, those problems have not resurfaced. Yes, the phone is more sluggish when power drops to 70%.
There appears to be several issues. The CPU slow down is probably by design. The others may be due to corrupt OS.
I hope that Apple is investigating and will make an announcement when they figure it out. They have a history of keeping mum until they have a solution. 🏼
mok1987 wrote:
I wiped and re-installed the ios through recovwry mode. THE BATTERY DOESNT MATTER. IT IS A FEATURE
Why do you think the battery doesn't matter? Did wiping and reinstalling iOS help?
Lots of people have said that when they replaced their battery the problem went away. Lots of people who have seen the problem have said that their battery wear level was high.
If your iPhone is still under warranty, take it into Apple and get the battery replaced. They should do it for free.
Just read through this whole thread, my wifes iPhone 6 been acting pretty slow for her, checked battery and ordered a new one, will report back with the outcome. Also the couple of battery check apps have been really inconsistent or my battery has been really inconsistent, it ranges from 93% to 77%, but the phone has over 585 cycles, so ill try a new battery and see what happens, kit replace battery, $15 bucks, OEM battery $19 bucks. Apple care is way past so I won't have to worry about warranty,
Really glad Apple came out with the discounted Battery R & R and IOS update. Ill send the battery back I ordered and let Apple take care of the fix, we got the phone to a manageable level of use and I'll be patient.
Yes, it will!
If you have an iPhone 6/6S/6S plus that is close to two years old, replacing the battery WILL restore your iPhone to normal operations!!!
Apple has “officially” admitted that is was purposely slowing down the CPUs in ONLY all iPhone 6 and iPhone 6 variant models to preserve the continuous working of these iPhones that had older, aging degrading battery performance issues, by the time of the introduction of iOS 11!
Apple has admitted this and HAS implemented in the U.S. (soon to be introduced in other countries) a reduced priced battery replacement plan for ALL iPhone 6 AND later iPhone models!
The iPhone battery will only cost $29 U.S.D. ( the normal iPhone battery replacement cost is $79 U.S.D., a savings of $50 U.S.D.) and WILL return ANY iPhone 6 or iPhone 6 variant back to its former, normal operations and performance speed!
This reduced priced iPhone battery replacement program will stay in effect until December 2018!
Stop treating me like some sort of village idiot!
If you have a two year old iPhone, get the battery replaced as soon as you can!
Lawrence Finch wrote:
I guess some people would prefer that their phone shut down randomly.
I'd prefer that my phone shut down randomly once a month (which is what it was doing) than that it be very slow and difficult to use every day of the month.
Even better would be to have iOS tell me that my battery needs to be replaced, and that my iPhone performance will be compromised until I replace the battery. That feature is coming in the next iOS update, thankfully.
Best of all would be if Apple didn't push the CPU+battery combination to its limits, so that iPhones could continue to operate at full speed for several years, even as the battery ages. This used to be the case, but with the CPUs in the iPhone 6 and 6s (at least) they began running into this problem.
Marc007@ wrote:
If my laptop is being used on battery power, I can choose to allow the power management to reduce the CPU and other hardware performance and use it longer, or I can disable power management features and use the hardware at full performance capability up until the last few % of power remaining before I get the critical warning and it shuts down - I know the consequences, it is my choice. I would never intentionally buy anything that did not give me this sort of choice.
The problem is that iOS devices with weak batteries don't give you critical warnings - they just shut down abruptly, frequently with battery percentages of 40% or higher. They don't give you warning. If you go back to before 10.3 was released (the first version with this feature) there are constant reports and complaints in the forum about devices abruptly shutting down, usually during phone calls or video games. Those complaints have pretty much disappeared. Laptops with weak batteries have the same problem, and any other battery powered device with batteries that have developed high internal resistance. I've had laptops fail this way many times over the 20+ years I've been using them - until I got my 2 Macbooks. The oldest is from 2010. Neither has ever failed this way.
How old is your iPhone 6?
They were discontinued in March 2016.
If you purchased and iPhone 6 anytime in 2016, your iPhone 6 is going on two years old.
Apple has already admitted to slowing down all iPhone 6 variants with degrading performng batteries.
Apple has the new reduced priced IPhone battery replacement for iPhone 6 and later models for only $29 U.S.D..
So, make the appointment and get a new replacement battery.
The replacement battery WILL restore your iPhone 6 to its former, normal performance under iOS 11.
Good Luck to You!
If your iPhone 6 battery is bad or not performing at a certain threshold of acceptable performance, this iOS 11.3 update does NOTHING to change the condition of your iPhone battery!
If you turn off the CPU throttling and your iPhone 6/6S/6S Plus starts having random shutdowns due to CPU and battery overload, you will STILL need to have your iPhone battery replaced!
If you think your phone got faster with iOS 11.3 and you haven't disabled the throttling, then, the difference is not in the phone or it's behavior but in your perception.
When you install iOS 11.3 throttling is disabled automatically. You don't have to take any action to turn it off. Throttling will only be turned back on if your phone has an unexpected shutdown.
So, this is not perception or imagination. iPhones with old batteries that were being throttled under previous versions of iOS 11 get an immediate performance improvement when iOS 11.3 is installed, even without a battery replacement. Of course, if you experience unexpected shutdowns or other battery problems, throttling will be turned on. At that point you can live with it, you can turn it off and take your chances with shutdowns, or you can replace the battery.
My iMessage was late to respond literally like 5 seconds at times but resetting all my settings FIXED my issue! Thank you!!!
iPhone 6 very slow with IOS 11 update
