Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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Mic not working on calls but working on viber, voxer etc. Ideas?

Hi, whenever I make or receive a phone call, the other person can't heard me at all. I can't heard anything too. (Sometimes all I get is like static noise) The weird part is that whenever I use viber, voxer, heytell or memo voice notes they work great. I already change the dock connector but I got the same error. At this point I don't know if this is a hardware or software problem since the mic and speakers work fine with other applications.

I checked Google for some help but I couldn't find someone with a problem like mine.

Any ideas please, at this point I'm willing to try anything.

Answered! View the answer I have this problem too

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Ok I finally find someone who solve this problem. According to him it was the "audio codec" on the logicboard. I don't really know if that's the real name of the chip but that's what he said.

Cost me around $75 and he fix it in 2 hours.

Hope this info let some of you guys with this same problem.

Cheers.

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i think the problem is with the noise cancelling microphone located near the headphone jack and the IC chip that controls it, you can bypass this by going into SETTINGS-GENERAL-ACCESABILTY and turning hearing aid mode on. give it a try and see if that helps

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That didn't help :-(. Any other ideas, I will try anything at this point.

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had the same prob, people couldnt hear me, but i can hear them, but when using viber... the mic works just fine- i changed the mic, it worked for 2 days then the prob came back, the guy workin on my iphone said its because of the 'microphone crystal' chip, so we replaced it and it works just fine. am not sure if this is the correct name but the guy showed it to me, it is not included in the microphone, it is a small chip (almost 1mm each side) located in the middle, try to replace it though its a bit hard to find one. it costed me 27 $

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I've seen this issue too many times. Very common problem with the iPhone 4. There's a chip that needs to be resoldered.

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I had the same problem for about a month until today, May 24, 2013.

I called up my cellular provider and explained the problem to them. They 'refreshed my SIM' and within 6 hours, the problem was solved.

God bless you.

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How to resolve the above mentioned issue

STEPS

1. Reset your i-phone (Setting -> General ->Reset ->Reset All Setting)

2. Switch OFF your i-phone

3. Switch ON your i-phone

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Replace the dock connector. It is the bottom microphone that is supposed to work on calls and the top mic works on apps. The issue is definetely with the bottom mic. The mesh on the bottom of the phone may be clogged. I had one come in recently with the same issue. I replaced the mesh in the bottom of the phone because it was clogged completely up. I did not even replace the mic just cleaned it up and replaced the mesh. Make sure the mic is plugged back in the bottom of the phone. Static is an indication of a bad connection. Like my Daddy always told me just because you did it doesn't mean you did it right.

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Craig, that was already changed "I already change the dock connector" is the statement in the original question.

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Joche will be eternally grateful.
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