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Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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Internal Mic doesn't work, even after replacing dock assembly

So, my iPhone 3G had a shoddy mic which would work when only you squeeze the phone. Thinking it was the connection, I resoldered the mic and it was fine for like an hour, so I decided to buy a new dock connector assembly to fix it permenently.

The iPhone headphones work fine--when plugged in I hear sound and I can use that mic. When they're unplugged, the built-in speaker works, just not the built-in mic.

Anyway, I installed the new dock connector assembly, but the mic now doesn't work at all. The actual dock connector and speaker work fine, and the mic built into the headphones works.

I am wondering if there is some trick to getting that piece installed that would affect only the mic, or is there anything I'm overlooking? (I did pull some lint out of the headphone jack, but it didn't help).

Thanks for any help you guys can give

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I also have this problem, did you ever get it resolved? Thanks

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I checked the dock connector and its plugged in snugly.... thanks for the suggestion though, maybe there is a bad batch of dock connectors on ebay? hmm

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I am going to try to reflow the audio codec chip and see if that works... I'll report back with my findings

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Me too... it must to be a problem with mother board....

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I got an "OEM" dock assembly from ebay.

The ribbon cable connecting the assembly to the logic board was slightly too long and therefore forced the connector in the ribbon to partly pop out of the logic board connector. That resulted in loss of mic and dock port in my case. Maybe in just affects the mic in your case?

Try opening the phone, put preassure and put preassure on the connector. Then call someone and see if it works...

Oh, this involves opening the phone while it's powered on... Do at your own risk......

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I had intermittent mic failure over the week of Thanksgiving this year. The only cause I can think of was a short fall from seat to floor on bus. Another short fall from similar height may have reseated my cable. I'm not sure.

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had anyone have a solution on this? i have the same problem too. I have tried to replace the dock assembly but still have problems.

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hi i bought a new dock from ebay and had some of same problem but i push hard and with otter box it keeps connectors down but the text tones and apps sounds not work but ringtones do any thoughts?

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Hi all

im facing same problem.but the distortion is only when i recieve a call.but using mic for audio recording has no problem.

everybody, is this the case you facing ? plz answer so we may have solution.

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