I did some troubleshooting as the microphone has not been working for some of the keyboard inputs and Gemini since a few updates ago. I believe this is a software issue with the OS not recognizing Mic1 and Mic2 correctly(assigning both mics to mic2). I used "Device Care" phone diagnostics to test the microphone many times. I am under the impression that the lower mic should be mic1 and the upper should be mic2 (this is how my diagnosis is written). Either way, here is how I tested and the results. I would like to report a bug although don't know how.
Test 1 - Mic 1: Blew into lower mic back and forth, with no sound during playback
Test 1 - Mic2: Blew into the lower mic, back and forth, loud sound as if blowing directly into mic.
Test 2 - Mic1: Blew into upper mic back and forth, no sound during playback.
Test 2 - Mic2: Blew into upper mic back and forth, loud sound as if blowing directly into mic.
