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Released September 22, 2017. Model A1863, A1905. Available as GSM or CDMA / 64 or 256 GB / gold, silver, and space gray.

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iPhone 8 microphone inop after replacement

Last night, I replaced the battery and microphone/lightning port on my IPhone 8. The battery had been having issues holding a charge, and people I talked to on it reported hearing static or general trouble understanding me while talking. I didn’t have any significant issues with the removal/replacement, it just took a while to strip it down and build it back up. The battery seems fine and is charging, but the microphone appears to be completely inoperative. I called my dad to test it, but he couldn’t hear me at all. I also tried recording a voice memo and can hear nothing. I don’t THINK I messed up on the lightning connector assembly installation, but the only other possibilities I can see are that a) I DID mess it up, or b) the assembly I ordered was bad. I’m pretty disheartened by the whole thing due to the amount of time it took to swap, and the possibility of having to reorder more parts/seals, plus my work “week” starts this afternoon and I won’t be able to commit any worthwhile time to it till Saturday/Sunday. As of right now, I have a fairly expensive texting device. /8P Any help or suggestions would be appreciated.

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Can Siri hear you? Could you here your dad? If so the charging port you purchased is probably faulty. From the iPhone 8 up they are particular about aftermarket charge ports. I suggest purchasing one from a reputable supplier.

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The mic is completely inop, so no. Siri, voice memo, and a call to my dad proved pointless. And I would assume that iFixit is a fairly reputable source; I haven't had any issues with their batteries, at the very least...

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@erric07 The iPhone 8 has multiple microphones. Siri uses the top microphone where voice calls use the two at the bottom. If all the microphones are not working you could have a problem with an audio IC on the logic board. This could also explain the battery drain.

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Ah, I was thinking it was just the 2 at the bottom. Minor correction either way; I just ran a simple test with Siri (opened clock), and it worked. (I don't typically use Siri, so I'm not fluent with it). At any rate, Siri works as advertised, so I have to (still) assume either the lightning assembly I installed is bad or that I missed a connection or something. I still have the old assembly, so I'll likely try reinstalling it to verify, but I'll have to get another replacement seal (or 2) in the meantime.

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A fancy texting device, huh? Yeah that ‘s no fun. Sounds like when you reconnected the battery and the speaker part, could be that the seal is not entirely secure. You stated that it took of time to put it back together, which sometimes in the process, the right amount of pressure and/or screws are not placed correctly.

Now, in the case that the part you got in indeed faulty, obviously you’d have to swap it out. Either way, you’d have to reopen the phone and see what the problem is.

What I’d recommend, is to get another speaker part, just be careful with the TouchID, since you can disconnected by mistake and create another problem. Seal it back up with the help of an iSlack if you have one. If not, just gently apply pressure along the edge to make sure it’s enclosed correctly.

Any questions, let me know.

Alex H.

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The speaker works fine; I played some voice mails, Youtube videos, and songs in my library to make sure. To be clear, with the exception of the microphone, everything on the phone currently works normally since the "operation."

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