I'm having the same issue. Is there a solution to this. I have to take all my call with speakerphone or plug in headphones. All this happened after last update on my device.
We would recommend giving this troubleshooting article for microphone issues a try: http://www.samsung.com/us/support/troubleshooting/TSG01001249/
Hope this finds you well!
Yea I'm having the sam problem on my s9 plus.
It's been going on for about a month now . It first started after I updated my phone. Samsung needs to fix this issue soon
My husband and I are still having this problem. Tired of the replies that do nothing to fix it. The last one said to try a fix to the microphone. It is not the microphone! I cant hear the people I talk to on a call! I should not have to use speakerphone at my office or a headset just to answer a basic call. Samsung fix this! I have had galaxy phones since they first started but I am ready to find something else. Fix this!!!!!!!!!!!!!!