auto-brightness not working?

Discussion in 'iPhone' started by Jongo1, Oct 30, 2011.

  1. Jongo1 macrumors regular

    Oct 9, 2011
    If I move the slider then turn the auto brightness on it pretty much stays at that brightness. If I put the slider down to nothing and toggle auto on it just stays just as dark and might change just a hair but nothing to noticeable. Does anyone else have this problem?
  2. mavis macrumors 68040


    Jul 30, 2007
    Tokyo, Japan
    Wirelessly posted (iPhone 4S (64GB): Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)

    When you adjust the slider, you're setting a baseline brightness for the phone. If you really want to test the auto-bright function, unlock the phone while holding above the earpiece with your thumb. This will trick the ambient light sensor into thinking the phone is in a pitch-black room. Wait a few seconds and then remove your thumb. The brightness will automagically go up, just like it's supposed to. ;)
  3. Jongo1 thread starter macrumors regular

    Oct 9, 2011
    well it does change a little bit, but if i put it on full brightness it stays on full brightness if i do that test. If I put it on lowest brightness it will stay that dim. If there was a min or a max setting then mining or maxing it would have a effect. For example if it was a max setting then if i put it to full brightness then it should change the screen from all sorts of levels but instead it stays fully bright. The only time I notice a change is when its around the middle.
    I feel like it generally stays in the area of where u set the slider. So if its in the middle it will stick close to the middle setting and wont stray away to far from it, instead of a min max kind of thing for me.
  4. Jongo1 thread starter macrumors regular

    Oct 9, 2011
  5. FreakinEurekan macrumors 68040


    Sep 8, 2011
    Eureka Springs, Arkansas
    Yes, that seems to be how it works.

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