iPhone 4 screen changes brightness

Discussion in 'iPhone' started by dimka15, Aug 16, 2010.

  1. dimka15 macrumors newbie

    Joined:
    Aug 16, 2010
    #1
    Hi All,

    Does anyone has the same experience:

    During beginning of the call ( after dialing) the screen changes its brightness rapidly 2 times, sometimes.

    This could be an attempt to recalibrate the proximity sensor. However, I can see this also if I use bluetooth.

    It does not happen always. Just from time to time.

    Thank you.
     
  2. OneMike macrumors 601

    OneMike

    Joined:
    Oct 19, 2005
    #2
    Settings > Brightness > Auto-Brightness

    I don't have this occur during calls (that I can remember). It does happen just about every other time though.
     
  3. dimka15 thread starter macrumors newbie

    Joined:
    Aug 16, 2010
    #3
    Auto Brightness never changes the brightness rapidly. So, this is not auto - brightness.
     
  4. nooaah macrumors 68000

    nooaah

    Joined:
    Sep 3, 2009
    Location:
    Philadelphia, PA
    #4
    This happened to me when I turned auto brightness on for my girlfriend. I think you said auto brightness is toggled off for you, though. I don't really know -- but, again, my phone showed this type of behavior when I put the phone on speaker while in a call and tried to use Safari (with auto brightness on). This never happened with auto brightness off and only with iOS4.
     

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