iPhone 6 Plus screen dims by itself ???

Discussion in 'iPhone' started by MightyTrojan, Sep 29, 2014.

  1. MightyTrojan macrumors newbie

    Joined:
    Sep 16, 2014
    Location:
    Cupertino
    #1
    I don't like the auto-brightness feature so I turn it off all the time. However, I noticed something strange tonight that the screen actually dimmed itself a little bit, and if I want to go back to full brightness, I had to restart the phone.

    Does anyone know if this issue is hardware-related or software-related?
     
  2. Hal~9000 macrumors 68000

    Hal~9000

    Joined:
    Sep 13, 2014
    #2
    We would need more specifics.

    You mean you have auto-brightness turned on, went into a dark area so the phone dimmed, then you somehow couldn't use control center to adjust the brightness back up? :confused:
     
  3. maxsquared macrumors regular

    Joined:
    Jun 27, 2009
    #3
    You didn't even read what OP wrote, he's pretty clear what he meant....:rolleyes:

    Anyway, can't say for 6+, but my 6 works fine in terms of back light, there is no issue of dimming.
     
  4. Hal~9000 macrumors 68000

    Hal~9000

    Joined:
    Sep 13, 2014
    #4
    To you perhaps, sure wasn't clear to me why he didn't simply use control center to put the brightness back up instead of restarting the phone.

    Guess anyone who asks a question to clarify before trying to help should get a roll of the eyes eh? Nice world with wonderful people we live in...
     
  5. MightyTrojan thread starter macrumors newbie

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    Sep 16, 2014
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    Cupertino
    #5
    No. I turned that feature OFF because I prefer to adjust screen brightness myself through control center.

    After the phone dimmed itself, I tried to turn up brightness in the control center. Unfortunately, it DIDN'T work. It would not go back to original brightness level.

    Normally, you would see screen become brighter as you turn up brightness, but in my case, when I turned brightness from medium to maximum level, the brightness doesn't change anymore. It only changes when it's in lower level of brightness.
     
  6. Hal~9000 macrumors 68000

    Hal~9000

    Joined:
    Sep 13, 2014
    #6
    Wow, that is very weird. If I had to guess that would simply be a random bug with iOS 8. After you restarted your phone can you replicate the issue again and again?

    Thanks for the additional clarification btw.
     
  7. MightyTrojan thread starter macrumors newbie

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    Sep 16, 2014
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    Cupertino
    #7
    I had similar issues with my 5s in the past, and I didn't really give extra attention to it. But I can't believe this issue still exists now. Disappointing.

    I can't really replicate the issue as I don't know when it will dim. It's very random.

    I already restored the phone by downloading brand new OS from iTunes, and after installing and playing with it, the issue reappeared again.
     
  8. Hal~9000 macrumors 68000

    Hal~9000

    Joined:
    Sep 13, 2014
    #8
    Sucky :(

    Wish the error was more consistent (even though that would be bad as well) so it would be fixed by Apple or you could replicate it to a genius to perhaps get a new phone. If you've already restored through iTunes I would just make sure it's not from a backup and simply start fresh to see if the issue still occurs. One time I had an overheating problem with my 4s, restored from backup though iTunes and had the issue pop up again. Once I did a completely clean restore it fixed whatever issue it was and I never saw it again.

    I personally have never seen that happen on my 5s though.
     
  9. whajj macrumors newbie

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    Oct 8, 2014
    #9
    I have the exact same random problem and it is driving me crazy! Any luck finding a solution?
     
  10. Bhs1975 macrumors 6502

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    Oct 30, 2012
  11. sonicblue83 macrumors member

    Joined:
    Dec 30, 2008
    #11
    It happened to me too. I think it happens when the phones gets hot. As soon as it cools down a little bit the brightness goes to maximum again.
     
  12. lbrooks macrumors newbie

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    Dec 22, 2013
  13. runtohell121 macrumors 6502

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    Mar 12, 2010
    #13
    If it's the same as the iPhone 5S, it's probably overheating... My phone tends to dim itself when it gets too hot.
     
  14. Godmode macrumors newbie

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    Sep 30, 2014
    #14
    It is 100% a product of overheating. My 6 did it too and my 5. My 6 plus doesnt though.
     
  15. cambookpro macrumors 603

    cambookpro

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    Feb 3, 2010
    Location:
    United Kingdom
    #15
    My 6 Plus also seems to dim randomly - auto brightness is also off. It always when it's been sitting around for a while, so I'm not sure it's a heat issue.
     
  16. Godmode macrumors newbie

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    Sep 30, 2014
    #16
    Its purpose is to kick in when the iphone is over heating. If yours is cutting in randomly then your device is faulty, its not normal
     
  17. AppleCinemaMan macrumors newbie

    Joined:
    Oct 9, 2014
    #17
    My 5s did that a lot and now my 6 plus (both on iOS 8). On 6 Plus, it happens a lot when I play Modern Combat 5 for a few minutes. First, it dims to about 75% then a few min later to about 50%. I'm not playing the game outside in the hot sun. It's in a air conditioned home. I do notice it getting hot when it happens so it's likely an over heating issue. Surprised it's not happening to more people. Hope Apple fixes it soon. dont know if it can be fixed via software update.
     
  18. circa7 macrumors regular

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    Jan 8, 2013
  19. WolfLaser macrumors newbie

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    Jul 27, 2008
    Location:
    Los Angeles, CA
    #19
    Mine too. Driving me bats. Dimming screen is self-generating and random. Can't be reproduced on command but happens everyday. No apparent association with "heat" -
    my iPhone has never show signs of heating up unless battery is being recharged. The dimming occurs both when power cord is attached and when running only on battery. Which suggests software issue rather than hardware (but I'm not an engineer...)
     
  20. grantwall macrumors newbie

    Joined:
    Nov 13, 2007
    #20
    Been having this same problem myself as well and it's driving me insane. I thought I was crazy for the longest time, until I was able to capture it on video.

    https://vid.me/Vtb

    Dims at 4:55, brightens at 6:20

    From my experience it seems to happen primarily when playing games or watching videos in Safari. It's quite random when it happens, but after it does the brightness will pop back after around a minute or so

    I'll be going to the Genius Bar tomorrow, so I'll be sure to report back.
     
  21. Steve686 macrumors 68030

    Steve686

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    Location:
    US>FL>Miami/Dade>Sunny Isles Beach>Condo
    #21
    Funny you posted this today.

    I live in Florida and it was pretty sunny and hot yesterday. I was using my phone outside in direct sunlight, and the screen definitely didn't seem as bright as it is most of the time while using it in the bright sun here. I would say it felt as if the brightness level was almost at 50%. This was around 2pm in the afternoon and I just attributed it to the sun being a little brighter than normal or something strange. Didn't check my brightness level.
     
  22. 1member1, Oct 13, 2014
    Last edited: Oct 13, 2014

    1member1 macrumors 6502

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    Sep 8, 2012
    #22
    Happened on my 4S couple of times.. i noticed it was hot then the screen dimmed..

    this happened like 2 months ago and i remember the brightness bar was on the highest level..
     
  23. IFRIT macrumors 6502a

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    Oct 15, 2012
    #23
    My guess is that it's a protection feature to help the phone not overheat.
     
  24. hipnetic macrumors 6502a

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    Oct 5, 2010
    #24
    I've also had this happen with my iPhone 5 when it got overheated. For me, that happened mostly when using the GPS functionality in the car. Sucked that GPS usage could cause the phone to get so hot, but since it was one use case I didn't get too worked up about it.

    If the newer phones (and it sounds like maybe the 6+ in particular) are prone to overheating when doing things that the older iPhones would not overheat from, I'd consider that to be a pretty big issue. Hopefully it's something specific to poorly written apps and can be fixed via better software.
     
  25. grantwall macrumors newbie

    Joined:
    Nov 13, 2007
    #25
    I can understand this if a device is being strained to it's limit while in a warm environment, though even then I'm not sure how much heat difference turning down the brightness would make.

    That said, this seems to happen when doing simple things like watching MP4 videos, or even browsing Safari at times. It's also far from warm weather where I am.
     

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