It just works. I haven't experimented a lot with the built-in microphone because I have been in enough meetings that have been ruined by people using the built-

It just works. I haven't experimented a lot with the built-in microphone because I have been in enough meetings that have been ruined by people using the built-in microphone. But I never heard any complaints about echos, and when I record myself using the speakerphone the audio quality is fine. I have also experiemented with background noise such as typing, and as I long I don't speak, I can't hear myself typing.