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Thread: iPhone 4 Proximity Sensor Malfunctions Reported

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Increasing numbers of iPhone 4 users are reporting the touchscreen becoming active during phone calls when the proximity sensor would normally shut it off, leading to inadvertent button-presses. The reports
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  1. #1
    MMi Staff Writer Paul Daniel Ash's Avatar
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    Default iPhone 4 Proximity Sensor Malfunctions Reported


    Increasing numbers of iPhone 4 users are reporting the touchscreen becoming active during phone calls when the proximity sensor would normally shut it off, leading to inadvertent button-presses. The reports are coming in with enough frequency and consistency to suspect a hardware or calibration issue with at least a particular subset of iPhones. No word from Apple yet.

    The iPhone's proximity sensor uses a small infrared LED and uses the reflection from nearby objects to deactivate the touchscreen when it's close to your head. If you hold it up to an iSight or other camera that can read near infrared light, you can usually just see the glow. The problem may be in how sensitive the detector is set to be on some phones or an actual problem with the detector. So far I haven't noticed it with my own phone, if I make a call and hold a finger in front of the sensor with my finger the screen deactivates out to about an inch away.

    An email from a MMi member this morning reported hearing keypress tones during calls, and in one instance his phone tried to initiate a FaceTime call while he had the iPhone to his head. There's an Apple Support thread with forty-one posts as of the time of this writing, most with similar reports. One user says the display activates when he rocks it from side to side.

    Anyone out there seeing this?

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    Green Apple jerrykid323's Avatar
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    yes this is very true I noticed this on my 1st phone call all of a sudden it was on MUTE !!!

    NO MORE NEEDS TO BE SAID!!

  4. #3
    Green Apple prankz55's Avatar
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    Its true ... i am also facing the same problem ...

  5. #4
    iPhone? More like MyPhone
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    My very first phone call I made on my new iPhone4. The very same thing happened. I had a conference call but had accidentally pressed hold with my face. I missed out on a lot of details during the phone call

  6. #5
    Green Apple
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    this happens to me. I was just talking with my bro about this same issue. I kept on hitting the damn mute. Never happened in the last iphone
    Bought the Iphone 3g on Friday jailbroke it on Monday!!!

    Black IPhone 3g Jailbroken.

  7. #6
    Retired Moderator one1's Avatar
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    Ran out of pictures I see..............
    Screw #Winning, I'm #Juanning
    iMac 27" i5 quad 2.8Ghz (1TB), MacBook Pro 17" 2.6, iPhone 4s

  8. #7
    Green Apple prankz55's Avatar
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    Mine goes on loudspeaker or hold ...

  9. #8
    What's Jailbreak?
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    Big time!! Every time I make a call my number pad comes up and I keep hitting the numbers

  10. #9
    What's Jailbreak?
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    Yep it's happened to be a few times. I wonder how apple will deal with exchanges while demand is so high. Has anyone noticed battery life issues? Cause mine doesn't seem to be holding a charge that well

  11. #10
    Green Apple carlos916's Avatar
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    mines activates facetime all the time... maybe because its next to my face LOL! but yeah no bueno!

  12. #11
    iPhone? More like MyPhone giancarlo's Avatar
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    go to settings and choose the "erase all settings." Cleared it right up for me. I complained about my phone screen not coming back after I finish a call, but a fellow member gave me a heads up and sure enough all the issues are gone.

    Settings>General>Reset>Reset All Settings

  13. #12
    iPhone? More like MyPhone NiteStar's Avatar
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    I first noticed while taking to an AT&T rep about my reception issue. All of a sudden she was like "hello? Hello?" lol. I had put her on hold somehow. After testing this out, it happens quite frequently while on calls.

    Btw I did the settings reset and it still goes it.
    Last edited by NiteStar; 06-25-2010 at 10:46 AM. Reason: Automerged Doublepost

  14. #13
    What's Jailbreak?
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    This keeps happening to me every time I'm on the phone it calls someone else

  15. #14
    What's Jailbreak?
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    i was told to reset the network settings and it worked for me as well. No more problems. I just assumed since I had restored from my 3gs to the iPhone 4 maybe a setting caused it to glitch or something.

  16. #15
    Livin the iPhone Life mikerlx's Avatar
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    Wouldnt using a bluetooth solve this? Holding any iphone to your ear/face makes it greasy.

  17. #16
    Green Apple
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    Zero issues here.

  18. #17
    Green Apple sungod661's Avatar
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    Am i the only one that noticed that the moron in the picture is wearing a freakin BURGER HAT? sheesh couldnt we find another pic

  19. #18
    iPhone? More like MyPhone
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    Happened to me last night. I wasn't sure what was going on. Hopefully it isn't the sensor itself.

  20. #19
    What's Jailbreak? Punker1625's Avatar
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    Quote Originally Posted by sungod661 View Post
    Am i the only one that noticed that the moron in the picture is wearing a freakin BURGER HAT? sheesh couldnt we find another pic
    Its a cheeseburger in paradise. I got one from margaritaville.(its a jimmy buffet song)

  21. #20
    iPhoneaholic XFaega's Avatar
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    Yep same here. Second call. This also happened on my 3G. Any one having battery issues? I charged my i4 for 24hrs like instructed. Haven't done anything but now and I'm already down to 83%. Nothing is running in multitask. I have read many others having the same issue.

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