iPhone SE Anyone seeing slowdown on their 6s/SE?

Discussion in 'iPhone' started by mr.steevo, Apr 6, 2019.

  1. mr.steevo macrumors 65816

    mr.steevo

    Joined:
    Jul 21, 2004
    #1
    I have a 16GB SE that System Preference indicates 9GB used and Battery Health reports as having 93% health.

    The past few weeks I’m seeing the smoothness fade from this phone. Choppy transition between apps, slow camera action, just slower overall. I backed up and reinstalled iOS two days ago and it still seems choppy.

    Is this something you other A9 users are seeing? Just wondering if updates are slowing down all devices or if it’s just mine.

    If not I’m going to replace the battery.

    Thanks
     
  2. jwolf6589 macrumors 65816

    jwolf6589

    Joined:
    Dec 15, 2010
    Location:
    Colorado
    #2
    My mom has a SE and has no issues. But she has 64GB. I think the issue is your 16GB which is nothing.
     
  3. mr.steevo thread starter macrumors 65816

    mr.steevo

    Joined:
    Jul 21, 2004
    #3
    Do you think 7GB free is not enough for the phone to breathe?

    I appreciate the input
     
  4. jwolf6589 macrumors 65816

    jwolf6589

    Joined:
    Dec 15, 2010
    Location:
    Colorado
    #4
    I have a 8 and have 32GB free. Perhaps 7 is not enough. Go on eBay and get a 64GB model. My parents love the smaller form factor of the SE.
     
  5. now i see it macrumors 68040

    Joined:
    Jan 2, 2002
    #5
    7 is plenty of free space. That's not the problem nor is it your battery. Wait it out until the next iOS update
     
  6. DeltaMac macrumors G3

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #6
    I would suggest first: try a backup and restore through iTunes. It's a fairly painless process, and CAN provide some performance relief as some internal temp files/etc, would be cleaned up during the restore.
     
  7. se95dah macrumors member

    se95dah

    Joined:
    Dec 30, 2014
    #7
    In battery health settings, underneath where it says Maximum Capacity 93%, what does it say about “Peak performance capability”? Performance throttling due to chemical degradation of the battery does not necessarily correspond to a certain percentage of capacity - your phone may be slowing down to prevent unexpected shutdowns and its this second heading in “battery health” that is more important. Can you tell us what your phone says here?
     
  8. MasterControlOp Suspended

    Joined:
    Mar 28, 2019
    #8
    No problems on the three SEs in my family.
     
  9. Shirasaki macrumors G3

    Shirasaki

    Joined:
    May 16, 2015
    #9
    I start experiencing increasing amount of system random freeze (sometimes a hard reset is the only thing to fix it) and app freeze, as well as overall sluggish navigation experience. I think iOS 12 is tweaking my device to a level that forces me to upgrade but not hard enough.
     
  10. Significant1 macrumors 6502a

    Joined:
    Dec 20, 2014
    #10
    No problem on 6s. But the battery was running low in no time (89% health), so I just had it replaced and now it is better.
     
  11. TooMuchChocolate macrumors newbie

    Joined:
    Apr 5, 2019
  12. Reno Raines macrumors 65816

    Joined:
    Jul 19, 2015
  13. Freakonomics101 macrumors 68000

    Freakonomics101

    Joined:
    Nov 6, 2014
    #13
    Not at all! iOS 12 increased performance from iOS 11.
     
  14. pika2000 macrumors 601

    Joined:
    Jun 22, 2007
    #14
    Mine is still at 100% capacity battery (replaced by Apple few months ago).
    There are occasional stutters, which are really rare. Eg. slowdown going to home screen, or starting an app. Imo this is the effect of the new scheduler introduced in iOS 12. My guess is after a deep sleep state, it takes a “while” for the A9 to ramp up its CPU. But other than that, I rarely experience slowdowns (unlike iOS 11 where you do feel something is bogging the phone down).
     
  15. CrazyForCashews macrumors 6502

    Joined:
    Apr 1, 2018
    #15
    Yep, the SE screams on iOS 12.2.

    People can say whatever they want about Apple but one thing you can’t fault them is how they support older devices.
     
  16. TooMuchChocolate macrumors newbie

    Joined:
    Apr 5, 2019
    #16
    Unfortunately the idea that Apple deliberately slows down older devices with updates is still firmly embedded in a lot of people's minds.
     
  17. mr.steevo thread starter macrumors 65816

    mr.steevo

    Joined:
    Jul 21, 2004
    #17

    It says

    “This iPhone has experienced an unexpected shutdown Because the battery was unable to deliver the necessary peak power. You have manually disabled performance management protections “

    This shutdown happened when we had a cold spell and I was walking outside in -35.
    I suppose the battery could be the issue as the restore hasn’t made much of a difference.
     
  18. Freakonomics101 macrumors 68000

    Freakonomics101

    Joined:
    Nov 6, 2014
    #18
    Off topic but that cold spell (if the one I think you’re referring to) was miserable!! Wind chill flirted with -60°F. I didn’t use my phone outside for this very reason. I kept it in my coat pocket so it could stay warm. Glad I did because I got frostbite in less than 3 minutes.
     
  19. mr.steevo thread starter macrumors 65816

    mr.steevo

    Joined:
    Jul 21, 2004
    #19
    It was uncomfortable For Sure.
     
  20. ghanwani macrumors 65816

    Joined:
    Dec 8, 2008
    #20
    I have the same battery issue with my SE and I do experience some slowness and on rare occasions freezing. But it’s still a very usable device.
     
  21. Banglazed macrumors demi-god

    Banglazed

    Joined:
    Apr 17, 2017
    Location:
    Cupertino, CA
    #21
  22. user_xyz macrumors regular

    user_xyz

    Joined:
    Nov 30, 2018
    #22
    My 6s is fine.
    As good as ever.
    I stay on IOS 12.0.1
     
  23. Mity macrumors newbie

    Joined:
    Nov 1, 2014
    #23
    I have an iPhone 6s and I got the battery replaced last fall because I still prefer Touch ID (I greatly dislike the Face ID on my new iPad Pro). I'm still on iOS 11 and I've noticed a slowdown in the last month or so. It happened almost instantly. I haven't had any random shutdowns, just the feeling of being slow and choppy. I've taken very good care of my iPhone - no drops, damage whatsoever. I decided to update to iOS 12 just now to see if that fixes it. If not, I'll have to upgrade to an iPhone 8.
     
  24. drumtroll, May 12, 2019
    Last edited: May 12, 2019

    drumtroll macrumors newbie

    Joined:
    May 12, 2019
    #24
    "This iPhone has experienced an unexpected shutdown Because the battery was unable to deliver the necessary peak power," is Apple's way of telling you they throttled your processor so as not to stress a taxed battery. However, "You have manually disabled performance management protections" is Apple's way of saying you then went in and turned off said throttling, which you would've done on the same settings page as this message.

    If you're still experiencing seemingly slower performance after turning performance management off, though, then something might be up... Firstly, the SE battery can be bad when the battery health even when it measures in the mid-to-low 90s range; mine was, and was about unusable once it degraded further into the high-80s range. When I finally took it in for repair, the battery was swollen (which explained the noise I would sometimes here when pressing down on my screen). I had dropped mine in water briefly at one point, so that could've started a slow degradation of my battery which didn't manifest itself until almost a year later, who knows. Similarly, the cold could've done some subtle damage to yours that is manifesting later (again, who knows; I'm just throwing theories against the wall).

    The battery in my wife's SE, though, also started behaving badly in the mid-to-low 90s range, though, and qualified for replacement. (Hers has never been dropped in water, exposed to cold etc.) So, with performance management turned off and your battery health at 93%, it could very well be time to have your battery replaced.

    Before getting my own battery replaced, I did download Coconut Battery to my Mac as a way to independently measure of my iPhone's battery health... it seemed to be way more accurate and showed a much less healthy battery. So, you could try that to see if it sheds any light on the situation.

    Regardless, with your battery showing performance management [throttling] kicked in and showing a not entirely healthy 93% health rating, you could try taking it into the Apple Store to see if they'll replace the battery. If replaced, chances are you probably see improvement. (They can also run a diagnostic over the phone if you don't want to spend time at an Apple Store right away.)

    OH, ALMOST FORGOT: Have you upgraded the iOS version, recently? Increased battery drain is always a thing for the first few days after an upgrade as the phone is busy reindexing files, then it calms down a few days later. I saw another thread on here about iOS 12.2 causing drain on the iPhone SE, though it's hard to tell if the issue is "real" since no one says how many days/weeks it's been since they upgraded to the latest version. (I'm still on 12.1 so I have nothing to add to that conversation, at the moment... though it sounds like the 12.3 betas might be gentler on the batteries than 12.2.)
     
  25. ghanwani macrumors 65816

    Joined:
    Dec 8, 2008
    #25
    I just got my battery replaced because I had experienced this. It has made a big difference to both battery life and speed.

    I was having trouble getting through the day and now I end the day with 30%+ even though battery health reported 90% capacity.
     

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24 April 6, 2019