A recent study conducted by a team of researchers at the University of Wisconsin-Madison found that the conferencing app is actually sending audio input to the server even if the Microphone is on mute.
The conference app still has access to the microphone even when it is on mute. Researchers tested this on many operating systems, including Windows, Mac, Android, and iOS, to see that the conference app still has access to the microphone when it is on mute.
Surprisingly, the team found out that these apps on all major operating systems still have access to the microphone. Most of us think when the microphone is on mute, the application won’t have access to the microphone, which is not true.
There are ways you can turn off your microphone at the operating system level, but this is not an easy option while you are on a conference call. The best option to solve this issue is to get an external speaker/microphone with a mute button.Having an external mute button will cut off the microphone and will not send any inputs to the conference app.