Screen turns black during a call if i tilt the phone???

Discussion in 'iPhone' started by VideoNewbie, Jun 21, 2009.

  1. VideoNewbie macrumors 6502

    Feb 6, 2009
    when i am making a call and i tilt the phone horizontally the screen turns black, when i tilt it vertically again the screen will go back into the call mode.

    what purpose does this serve??
  2. jmann macrumors 604


    Dec 8, 2007
    bump on a log in a hole in the bottom of the sea
    If you cover the proximity sensors (near the ear speaker) the screen will shut off. Are you doing that? This photo points to the general area.

  3. VideoNewbie thread starter macrumors 6502

    Feb 6, 2009
    its possible that i am...does it do that to conserve battery?

    i know for sure that when i tilt the phone during a call though that the screen will shut off.

    next time u are makign a call try tilting the screen horizontally and see if it does the same thing? or maybe its just mine?
  4. YoungLew macrumors regular

    Jun 8, 2009
    yesterday my screen went blank during a call......

    then once the call ended the screen wouldn't come back on :eek:

    it just stayed blank for about 30 seconds then it came back to life again......

    i thought something was wrong with the phone at first but i couldn't replicate the problem with other calls so i'm not sure
  5. conch575 macrumors 6502


    May 29, 2009
    Sydney, Australia
    It's to save battery while it's being held up to your ear, coz lets face it, who can actually see the screen while it's next to your ear. It's a good idea I reckon.
  6. brightlights macrumors regular

    Jan 6, 2004
    Not exactly true. It was stated at one of the keynotes that the screen shuts off to avoid accidental input when it's pressed against your face.
  7. TimothyB macrumors 6502a

    Jun 20, 2008
    I don't think it's just to save battery, but also disables touch so your face or ear don't randomly hit buttons.

    I can easily cover the sensor too. Often when I go to switch to speaker phone, I need to make sure how I'm holding it with my left hand doesn't cover the sensor. Also, if your phone is locked when a call comes in, the moment the call ends, the phone usually locks right away.
  8. Switz213 macrumors 6502

    May 26, 2008
    It's so your face doesn't accidentally hang up on an important business call. And so you don't blame ATT for all of your dropped calls :p
  9. iMacDragon macrumors 68000


    Oct 18, 2008
    As stated it is both to save battery life by turning very power hungry screen off, and preventing accidental ear input on controls.
  10. wetrix macrumors 6502


    Dec 1, 2006
    Auckland, New Zealand
    Damned accidental ear input.

    Does that imply that there is purposeful ear input?

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