iPhone Pro call sound issue post iOS 16.7 update

I believe because of that failed speaker chip they replace entire display , if the 3 years are not over.

iPhone 12 and iPhone 12 Pro Service Programme for No Sound Issues - Apple Support

Hi there,

Please try this

1. Remove all screen protectors, films, or cases from your device. 
2. Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver isn't blocked or dirty. 
3. If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.
4. Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service.
5. If you hear sound, try making a call with your iPhone and turn on speakerphone. On iPad or iPod touch, make a FaceTime call. If you still can't hear, or hear static or crackling, then your network or reception could be the issue. Try to call again later, or from a different location.

If this is not working  contact Apple Support to discuss service options.

This post might help - iPhone 12 and iPhone 12 Pro Service Program for No Sound Issues - Apple Support

Went to Geek Squad (through Apple) and the top speaker hardware failed. They replaced the back of the phone and I no longer have the issue. This was covered under the limited Apple warranty.

I took my phone to Apple today. My phone was fine until the afternoon of Mar 4th. Then all of a sudden no sound on a phone call unless on speaker or through the car.

it’s a known Apple issue “iPhone 12 service program for No Sound Issues” for phones manufacturered between Oct 2020-Apr 2021.

Update: I took my phone (iPhone 12) to Apple today and spoke to support on the phone. While my model is within the manufacturer dates of the sound issue I am just under 60 days past the “3 year extension” for the warranty for the sound service program. It is the receiver that needs replacing. But it is in the display so the phone needs a complete display replacement. There is nothing they will do unless I pay for it. I am currently not a happy Apple customer.

Same issue in iPhone 12

can hear calls through loud speaker only.

when contacted Apple care they told me that you have to bear the cost of Rs 28000/- for screen replacement as the top receiver is attached to the screen only and it has to change to make it work.

new iPhone 12 is not worthy Rs 28000/-

Hello~ This is from the article I linked above…

*You might still need to contact Apple Support after following these steps.

It’s more than likely a hardware issue so you need to go into Apple. Do as you like but an update is unlikely to help with the issue.

~Katana-San~

Hello~ Best option if you have tried all fixes is to have your iPhone checked…

Genius Bar Reservation and Apple Support Options - Apple

~Katana-San~

Hello ~ Click on below …

If the microphones don't work - Apple Support

You likely have a hardware issue and Apple is the only one that can help. Posting the same thing over and over here certainly does no good. Click on below…

Genius Bar Reservation and Apple Support Options - Apple

~Katana-San~

Hello~ Most likely you have a hardware issue and need your microphone checked out by Apple. Click on below or Click here

If the microphones don't work - Apple Support

Contact - Official Apple Support

~Katana-San~

Hello once more~ Take your iPhone in for repair. The microphones have failed. Others have had to have their’s repaired because it is a hardware problem. What part of that doesn’t hit home with you? You have been in this thread complaining since the beginning of January and still haven’t bothered to get your device repaired and I don’t understand that myself. Go get it repaired…please.

~Katana-San~

This happened to me, fixed by updating software to newest update

Just take a toothbrush and scrub the earpiece at the top of the phone and the microphones at the bottom. Worked for me.

Hello ~ The link works fine for me. Take your iPhone in to Apple and have it physically checked out…that’s pretty simple. You more than likely have a hardware issue that needs repair. In the past when I have had a device issue Apple has always taken care of it for me which is more than I can say for some other companies and done a wonderful job to boot. Also …I am getting a little uncomfortable with you arguing with me when I am trying to assist someone else in this thread.

~Katana-San~