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ivansd89
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Internal microphone not working after swapping the dock connector.

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Hello, I just swapped the dock connector on a friend's iPhone 4 because it wasn't charging/syncing; but now after following iFixit's guide and putting everything together, the internal mic doesn't work. When I make a call the mic is completely muted but when I activate the speakerphone the other person can hear me (because it uses the secondary mic on top of the phone). It doesn't work with voice memos either.

Oddly enough when I remove the back glass of the iPhone and blow or talk into the lower part (from the rear) of the phone near the mic, the other person hears it, but very "far away".

Does it have anything to do with the little rubber piece I had to move from one connector to the other?

Any help will be greatly appreciated!

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markvisser99
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Eh

I'm not sure if it has to do with the rubber piece, but I have a similar situation, and think that could be the case.

My speaker went quiet one day, so I took a look, and there was a lot of dust / lint / stuff blocking the two grills and inside the dock connector.

So, I took an air gun to it. Not an aerosol duster can, but an air hose in the shop at work.

Microphone isn't useful anymore for voice memo's or phone calls. If I yell at it, and play back on a high volume, I can hear myself in a voice memo, and if I blow on it, it is VERY loud in the recording.

I'm wondering if it does have to do with the rubber piece.

I'll let you know if I find anything.

Cheers

Well, I disassembled the phone again and reinspected everything and it seemed that everything was in place. Apparently the mic was DOA, so I ordered a replacement. But be sure to check that rubber cover though: it's very soft and if you used an air hose to clean it, most probably the cover slipped out of place and therefore the mic won't pick up the sound properly. I'll post back here how it goes with the replacement dock connector.

ivansd89,

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Yogo
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I have the same problem when I had to change the charging port. Did it work for you after you replaced and put a new charging port again? Let me know so maybe i can order another one.

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ivansd89
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I'm so sorry...I forgot to report back here how it went. My first dock connector came with a DOA microphone and iFixit gladly replaced it for a second one which came with a stripped ribbon cable, so I yet again asked for a replacement and the customer rep that took my case was kind enough to inspect the third unit himself and when it got here it was in perfect working condition.

Sadly these kinds of electronics are very tricky and there's no way of knowing if they work or not until you assemble them on the phone.

But yes, after getting the third one it worked great. The mic sounds loud and clear, the dock connector syncs and charges as it should...everything went great! I hope you can fix yours too!

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