My phone is a Galaxy S9+, for reference.
I've tried recording audio in many different apps and none of them work. In addition, when I try to use voice-to-text, it turns off automatically. Is there possibly a setting I may have turned off, or something I can fix?
Read more: https://samsungus.org/qa/s9/why-does-the-microphone-on-my-phone-not-record-audio.html