iPhone 8 Plus microphone not working

Hi SameerThaj,

Thank you for using the Apple Support Communities! We understand you are experiencing an issue with audio while on phone calls. Let's work together and determine the best solution.

To confirm, when you say your microphone is not working on calls, do you mean the other person is unable to hear you? Are you able to switch the phone call to speaker to see if the other person is able to hear you? Please try each step found in this article, to support you through troubleshooting this issue: If the microphones on your iPhone aren't working - Apple Support.

In addition to that article, here are some other steps we suggest trying:

-Remove any additional accessories from your device, such as a case or screen protector, to rule out that as a potential cause.

-Update to the latest iOS version: Update your iPhone, iPad, or iPod touch - Apple Support.

-Test if the audio is present on all calls, or just certain calls with certain contacts.

Let us know if you need continued support after those steps.

Regards.

SameerThaj,

Thank you for taking the steps in that support article, and following back up with us.

It sounds like you can use your AirPods or speakerphone on calls, and you're able to hear without issue. If so, this would narrow down the issue being with the bottom microphone on your iPhone. To confirm this, as instructed in the article we shared initially, were you able to record a voice memo in the Voice Memo app, and playback the memo? If so, were you able to hear your voice, or was there no audio while the memo was playing? If you cannot hear that audio on the voice memo, then you may need hardware repair on your microphone. In that case, you would contact Apple Support directly, to discuss options: Contact Apple Support.

If you still need us for more guidance, feel free to reply back.