IPhone 4 mic issue

Discussion in 'iPhone Tips, Help and Troubleshooting' started by nephron8, Jan 31, 2013.

  1. nephron8, Jan 31, 2013
    Last edited: Jan 31, 2013

    macrumors regular

    Apr 24, 2012
    Hello all,
    I have this 32 gb iPhone 4 which is out of warranty but its mic is dead.
    It works intermittently and does not respond to troubleshooting which I did from forum info.

    1) I tried cleaning the upper mic and lower with air can.
    2) I did restore also with latest ipsw.
    3) their is not blockage due to case.

    It Does not work with Bluetooth also and wired headset also.

    What can I do next ?
    What intrigues me is this why even Bluetooth also does my work ? And why intermittent working of mic ?

    Can it be loose connection ?
  2. thread starter macrumors regular

    Apr 24, 2012
    Guys pls help me as I don't have any clue what's wrong here.
  3. macrumors member

    Dec 14, 2012
    Phoenix, Az
    Couple of questions

    1) Are all mics out? If not which one is out
    2) Is it only during calls that it doesn't work?
    3) Is it a CDMA or gsm iphone 4?
    4) Does the mic on your headphones work when plugged in?
    5) Has it had a hard drop recently or water damage at some point?

    Let me know and I can help you out :D
  4. macrumors 603


    Feb 15, 2009
    Toronto, Canada
    Try a DFU restore, if that doesn't work it's time to make an Apple store appointment.
  5. thread starter macrumors regular

    Apr 24, 2012
    Thanks all for replies.
    Its gsm iPhone 4 and it works intermittent. And no predictable part whether it will work or nt.
    Whether it's Bluetooth headset or wired headset. None will work.
    It has never had fall and always been in adult use.
    I did restore with all ipsw of ios 6. it never helped with it.
    Its dead intermittently.

    Sent from my Lumia 900 using Board Express
  6. macrumors member

    Dec 14, 2012
    Phoenix, Az
    Sounds like the audio ic needs to be reballed those gsm iPhones have an issue with that sometimes it's just a bad capacitor but most of the time it is the audio ic hop on google there are plenty of folks that can fix it for $50-$80 and the phone is still worth $200-300 let me know if you need any help or if it is something you would like to inspect yourself.

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