How the hell does Auto-Brightness work?

Discussion in 'iPhone' started by WhySoSerious, Jul 26, 2010.

  1. macrumors 65816

    WhySoSerious

    Joined:
    Jun 30, 2007
    Location:
    Dallas, TX
    #1
    Seriously, how do you get it to work? I have it turned on and the slider is all the way to the right (most bright). However, when I'm sitting in the living room where it's really dark at night and turn my phone on, it stays at 100% brightness.....it doesn't "auto" down.
     
  2. macrumors demi-god

    xraydoc

    Joined:
    Oct 9, 2005
    Location:
    192.168.1.1
    #2
    Not sure it does at full brightness.
     
  3. macrumors 6502a

    Joined:
    Feb 17, 2010
    #3
    I believe it readjusts every time you lock and unlock the device.
     
  4. macrumors 6502a

    Joined:
    Jun 20, 2010
    #4
    It is not as automatic as say a MacBook... But it does do it eventually. I noticed it usually has to be a huge change in the light for the screen to adjust minor changes don't effect it like a MacBook.
     
  5. macrumors 6502a

    spblat

    Joined:
    Jun 18, 2010
    #5
    The range is not enough IMHO. It dims somewhat, but never as much as I would like. Last phone I had with an adequate auto-dimmer was a Sidekick. But on the other hand, my battery life with iPhone 4 has improved to the extent that I don't feel the same need to micromanage brightness.
     
  6. macrumors 6502

    Joined:
    Aug 24, 2005
    #6
    It really does suck. Especially when traveling through rooms in my house with different light atmospheres.

    It looks the best on full brightness but I don't want my vision to get any worse.
     
  7. macrumors 65816

    Tom G.

    Joined:
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    Location:
    Champaign/Urbana Illinois
  8. macrumors 6502a

    Joined:
    Nov 9, 2009
    Location:
    Long Island
    #8
    I notice it, but I keep mine set on the lower end of the scale.
     
  9. macrumors 68000

    wirelessmacuser

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    Location:
    Planet.Earth
  10. macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #10
    its usually a very gradual change, it wont happen instantly. :)
     
  11. thread starter macrumors 65816

    WhySoSerious

    Joined:
    Jun 30, 2007
    Location:
    Dallas, TX
    #11
    thx for the replies, but i'm not seeing ANY changes in the brightness scale. it's still at 100% in a dark room. this is the same things I saw on the 3G and 3Gs.
     
  12. macrumors regular

    Joined:
    May 2, 2010
    Location:
    Pompano Beach, FL
    #12
    The only thing that sucks is that after it brightens your display, it doesn't dim back down if u go in a dark room.
     
  13. macrumors 65816

    Joined:
    Jul 6, 2007
    #13
    It's not working for you because you set the slider all the way to the right, which is max brightness. You need to move it to about 1/3 to 1/2 way. I think that sets the minimum for the brightness. Try that.
     
  14. macrumors 6502

    Joined:
    Jun 7, 2010
    #14
    100% brightness?!! Inside?!

    Turn that down man! Lol your killing your eyes and more importantly draining the hell out the battery :)
     
  15. macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #15
    yeh i never put it at 100%. its normally <50%! the battery dies at those levels :(
     
  16. macrumors 604

    mcdj

    Joined:
    Jul 10, 2007
    Location:
    NYC
    #16
    I would kill for a shortcut to the brightness slider in the subdock.
     
  17. macrumors regular

    livingonvideo13

    Joined:
    Jun 19, 2009
    #17
    Ditto. (Well maybe not kill but hurt somebody real bad)
     
  18. macrumors 6502

    omgitscro

    Joined:
    Jul 12, 2008
    #18
    Auto-brightness changes take effect when one changes apps or when one enters the springboard.
     
  19. macrumors 6502a

    sparrky

    Joined:
    Oct 23, 2008
    Location:
    California
    #19
    You would kill.... but would you jailbreak? ;) SBSettings provides a nice shortcut to the brightness slider. I really wish this sorta stuff was built in, though.
     
  20. Eso
    macrumors 68000

    Eso

    Joined:
    Aug 14, 2008
    #20
    You do realize that the brightness slider in settings will not actually move, right? The screen still gets darker. On the iPhone 4, the screen can get brighter too (on all previous models, auto-brightness will only darken the screen or do nothing).
     
  21. thread starter macrumors 65816

    WhySoSerious

    Joined:
    Jun 30, 2007
    Location:
    Dallas, TX
    #21
    do you not comprehend the original post?

    I have the brightness set to 100% with auto-adjust set ON.

    So, i assume that when i turn my phone on in a dark room, the auto-adjust will lower the brightness down to....say...50%; however, it won't. It stays at 100% by no choice of my own.

    That's the problem, Mmm-kay pumpkin.
     
  22. macrumors 6502

    Joined:
    Aug 24, 2005
    #22
    This might be the stupidest thing I've ever said, but is this how auto-brightness works?

    In high light conditions (sunny day), the iPhone screen gets dimmer.

    In low light conditions (dark room), the iPhone screen gets brighter.

    So, unless I'm completely crazy, the software is not designed to dim the screen in a dark room. Ever. Even if it's set to full brightness.

    When set at 50% the auto-brightness works best because it has the room to change the brightness based on lighting conditions.

    Try sliding auto-brightness off and back on?

    Sorry if this was stupid but that's all I got. I've just never seen my iPhone dim in a dark room or get brighter in a light room.
     
  23. macrumors 6502

    Joined:
    Nov 10, 2008
    Location:
    LOS ANGELES, CA.
    #23
    Works opposite of what you described.....its dims in low light cause you can see it better and brightens in the sunlight or brightlight so its easier to see...:apple: try this with autobrightness set to on, at about 50% lock then unlock your phone in a semi dark room and then walk over to a lamp and watch it get brighter then see the difference as you go back to the darker part of the room it takes about 4-5 seconds for it to brighten up while your holding it under the light bulb of the lamp.
     
  24. macrumors 6502

    Joined:
    Jun 7, 2010
    #24
    No reason to be rude. I was messing around (hence the emoticon) mmm k pumpkin

    Still. 100% brightness isn't needed indoors. But it's your phone. Not mine. Just my 2 cents
     
  25. macrumors 65816

    Joined:
    Jul 6, 2007
    #25
    Read my post above. The slider is to set the minimum so by setting the slider at 100%, it'll stay close to max even when you are in the dark. Lower the slider to 1/3 to 1/2 and it should work fine. You mentioned you tried 3G and 3GS, did you own those models and you still don't know how to use auto-brightness?
     

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