05-02-2017 07:45 PM
I'm having a similar issue. I happened twice for now. people just cann't hear me at all. Mic was still working fine with voice recorder app when this issue happened. I fixed it with reboot my S8+ in first time, and fixed it with switch on and off the flight mode in second time. This issue both happened after I disconnected the blutooth connection from bluetooth audio devices (car bluetooth, and Bose Bluetooth headset) during a phone call. I think it is a bluetooth related software issue. Hope Samsung can fix it asap.
05-12-2017 06:30 PM
I've tried your suggestions but it's still not working
Interesting. So far my Mic is working. The last thing I could think that MAY help is closing all open apps, clear up ram space, and retrain ok google. I contacted Samsung. Hopefully they well tell us a solution to fix the problem. This is the best I can do to help :/.