Microphone not working on iPhone 7. (Phone Calling and Siri)

It sounds as if you have a "Classic" Audio IC issue that will require microsoldering for repair. Look up Iphone 7 audio IC and C-12 jumper on Google and Youtube and you will find a goldmind of videos showing the repair needed for your phone. You can find a reputable Repair shop locally that can perform Microsoldering repairs by googling it or simply search here on Ifixit in the business listings for a repair tech that can perform a "No Fix/No Fee" mail in repair for you.

"I picked this up from this thread. I believe this can be used as a test to see if it is the Audio Chip IC that is the problem,

Turn your phone off. Then turn it on again, put pressure on the screen as shown in the image as the phone starts to boot. This will press the audio chip on to the circuit board. If the phone boots normally, it is the the Audio Chip IC.

Here is the link to the article as posted earlier.

http://www.fixstop.com/blog/iphone-7-stu...

More Tests :

Open FaceTimeStart dialling someone. When the phone starts to dial, press in the same place. If FaceTime works, then once again, it is the Audio Chip IC.Try a normal phone call, as soon as the phone starts to dial, press in the same place and see if it works, if it does, it is the Audio Chip ICOther tests you can perform, Record a video front & back & press the screen, Record a Voice Memo & press the screen

Hope this helps."

im seeing a lot more of this issue on the iphone 7 and 7 plus im starting to think its a signature issue with them I restored one and started working fine for 5 minutes and the same thing happened. It has some issue with the audio if you have warranty take it to apple and get it swapped out if not contact ipad rehab or sts telecom.

"Apple disgust me. For a company to treat is customers like this, they really don't deserve any in the first place.

I will NEVER buy any iphone again. I've now swapped over to android and I have to say it's really good. I can still use my icloud email address on it and now I just upload my photos straight to my hard drive. No more icloud pestering me for extra money.

It's just getting used to a different look but once your used to it, it's great. I prefer it now.

So really I should say thank you apple for stopping me from being a life long customer of over priced very expensive phones.

Let me know how your change over went?

The hurdle is the first two weeks, once past this it all becomes second nature again so perseverance pays."

"I’m also facing this problem, microphone stop working after update 12.1.2.

I can’t make /receive calls, Facetime, any in-app calls eg FB messenger, whatsapp, cannot voice record, recording video has no sound.

Not under warranty already and I’ve tried hard reset, reset network settings etc."

It’s been a month of this crap for me. I’ve literally tried EVERYTHING every forum says to do and NOTHING. I haven’t been able to resolve this issue at all. I’m beginning to think Apple does this on purpose to get people to just buy another phone. Literally nothing worked to fix this.