Unable to access microphone in my mobile application while sharing the mobile screen in zoom meeting

[sales-avion]

I hope you are doing well!
I am facing one issue/problem while sharing/recording my screen in a Zoom meeting. I am giving the client a demo of the mobile application through a Zoom meeting. We have added a video recording functionality to our application.
So when I give the demo to the client, I can access the camera. I have recorded video using the camera but am unable to record voice using a microphone. I tried different settings of the camera and microphone in the Zoom app.

Please let me know about the solution to this issue/problem.