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  • 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?
    This article was originally published in forum thread: iPhone 4 Proximity Sensor Malfunctions Reported started by Paul Daniel Ash View original post
    Comments 159 Comments
    1. jerrykid323's Avatar
      jerrykid323 -
      yes this is very true I noticed this on my 1st phone call all of a sudden it was on MUTE !!!
    1. prankz55's Avatar
      prankz55 -
      Its true ... i am also facing the same problem ...
    1. scatman10's Avatar
      scatman10 -
      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
    1. aonavy's Avatar
      aonavy -
      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
    1. one1's Avatar
      one1 -
      Ran out of pictures I see..............
    1. prankz55's Avatar
      prankz55 -
      Mine goes on loudspeaker or hold ...
    1. xbigjoe's Avatar
      xbigjoe -
      Big time!! Every time I make a call my number pad comes up and I keep hitting the numbers
    1. nichgus's Avatar
      nichgus -
      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
    1. carlos916's Avatar
      carlos916 -
      mines activates facetime all the time... maybe because its next to my face LOL! but yeah no bueno!
    1. giancarlo's Avatar
      giancarlo -
      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
    1. NiteStar's Avatar
      NiteStar -
      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.
    1. michoolyoung's Avatar
      michoolyoung -
      This keeps happening to me every time I'm on the phone it calls someone else
    1. javii's Avatar
      javii -
      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.
    1. mikerlx's Avatar
      mikerlx -
      Wouldnt using a bluetooth solve this? Holding any iphone to your ear/face makes it greasy.
    1. squassss's Avatar
      squassss -
      Zero issues here.
    1. sungod661's Avatar
      sungod661 -
      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
    1. Vish's Avatar
      Vish -
      Happened to me last night. I wasn't sure what was going on. Hopefully it isn't the sensor itself.
    1. Punker1625's Avatar
      Punker1625 -
      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)
    1. XFaega's Avatar
      XFaega -
      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.
    1. moodyryan's Avatar
      moodyryan -
      i have the same issue, phone goes on hold suddenly while in active conversation, mute, speakerphone or Face time.... i thought i was the only one with this issue lol