I have a recurring problem with the outgoing audio during voice calls, i.e., other people can't hear me. I don't know if this is something about the microphone, or something in the phone software.
It has happened with and without a Bluetooth headset. It has happened from the start of some calls, or in the middle of other calls. That is, the other person could hear me when we started the call, but later could not. The mute indicator is never on when this happens.
I have been able to make the problem go away by rebooting the phone. This makes me think it may be a software problem. This is also only a workaround, not a solution. I have an important call scheduled two days from now when this problem must not happen.
Thanks for any suggestions