iPhone XS Max Sudden brightness changes - XS Max

Discussion in 'iPhone' started by harrisondavies, Oct 27, 2018.

Tags:
  1. harrisondavies macrumors 6502

    harrisondavies

    Joined:
    Nov 21, 2010
    Location:
    Newcastle upon Tyne
    #1
    Firstly, I searched and couldn’t find a similar post.

    I can be reading a webpage in a steadily illuminated room and the brightness will suddenly dim slightly and then appear to creep back up to its original brightness.

    I understand the concept of auto brightness, but there is no significant shift in ambient light to affect the brightness of the screen. No shadows or anything.

    It’s very sudden and distracting though doesn’t dim a lot.

    I know other people have flickering screens but that is not the same issue. It feels like the ambient sensor is detecting a change were none is found and far too quickly dropping the brightness instead of gradually reducing it.

    Anyone else have this?
     
  2. vtgeek macrumors member

    Joined:
    Sep 21, 2012
    #2
    I noticed my XS doing that this morning. The room was dark with ambient light unlike your situation. I can't say I've noticed it when the light was at a higher level. Perhaps the sensor is so sensitive that it was picking up on the screen's light reflecting off my face?

    But it was that 1/2 second stutter going from one page to another.
     
  3. harrisondavies thread starter macrumors 6502

    harrisondavies

    Joined:
    Nov 21, 2010
    Location:
    Newcastle upon Tyne
    #3
    Thanks for your input.
     
  4. bhodinut, Oct 27, 2018
    Last edited: Oct 27, 2018

    bhodinut macrumors member

    bhodinut

    Joined:
    Jan 31, 2013
    #4
    I've found that if the phone is close to your face or light clothing the light from the screen will illuminate your face or clothing and the ambient light adjustment will correct by brightening the display. Once it's brighter then it will get dim again and the cycle will repeat. Try holding it a bit further from your face and see if it's better. It drove me crazy for awhile.
     
  5. harrisondavies thread starter macrumors 6502

    harrisondavies

    Joined:
    Nov 21, 2010
    Location:
    Newcastle upon Tyne
    #5
    Thanks. I will try that. Never happened on the 8plus which is weird.
     
  6. now i see it macrumors 68040

    Joined:
    Jan 2, 2002
    #6
    My 6 plus on iOS 9 will do that occasionally too. It seemed like it was triggered by the time of day, but I think it's because the angle of the phone changes slightly while using it and it registers the ambient light a little differently- so jacks up or down the brightness. I think the auto adjustment just doesn't have enough fine tune granularity to it to incrementally change the brightness. It seems to sometimes jump to a higher or lower brightness when reaching a certain threshold.

    I don't use auto brightness any more.
     
  7. Zune55 macrumors 6502a

    Zune55

    Joined:
    May 2, 2015
    #7
    XR did that, I turned off auto brightness in accessibility.
     
  8. harrisondavies thread starter macrumors 6502

    harrisondavies

    Joined:
    Nov 21, 2010
    Location:
    Newcastle upon Tyne
    #8
    I’m concerned turning Auto Brightness off will somehow damage the OLED screen. I’m sure I read somehwere that it could.
     
  9. Givmeabrek macrumors 68040

    Givmeabrek

    Joined:
    Apr 20, 2009
    Location:
    NY
    #9
    Sure, it will increase the chance of burn in. :(
     
  10. CobraPA macrumors 6502a

    Joined:
    Mar 12, 2011
    Location:
    Lansdale, PA, USA
    #10
    I had an iPad that I noticed this on. Found I was holding it sideways and sometimes placing my finger over the region near the front facing camera with the light sensor... Any chance you moved your hand/finger over the sensor?
     
  11. bhodinut macrumors member

    bhodinut

    Joined:
    Jan 31, 2013
    #11
    When I watch a movie on my iPad the same thing seems to happen. Bright scenes get dimmed and dark scenes brighten. It's like a cheap HDR feature!
     
  12. harrisondavies thread starter macrumors 6502

    harrisondavies

    Joined:
    Nov 21, 2010
    Location:
    Newcastle upon Tyne
    #12
    A good thought, but I’ve only noticed it in portrait mode.
    --- Post Merged, Oct 27, 2018 ---
    I’ve reported it anyway, probably like thousands of others. I’d rather have that than burn in
     
  13. Zune55 macrumors 6502a

    Zune55

    Joined:
    May 2, 2015
    #13
    I have used iPhone X with auto brightness off for about 10 months and iPhone X is completely fine, no burn in etc. I never like auto brightness feature in any device so I always turned it off. But you can make Genius Bar appointment and ask them if it’s okay to turn it off?
     
  14. Seth Matthews macrumors 6502

    Seth Matthews

    Joined:
    Jun 1, 2015
    Location:
    The Ether
    #14
    Where do you keep your brightness level set?
     
  15. Zune55 macrumors 6502a

    Zune55

    Joined:
    May 2, 2015
    #15
    For any kind of videos & games app from 80% to 100%. For all other things between 35% to 50%.
     

Share This Page

14 October 27, 2018