Mic is being used by some other application ( Which ? ) I have a Samsung mobile ( S9 Plus ), When I use an app called "BixBy", sometimes it does not work and message is that mic is used being used by some other application and hence "Bixby" can not function.

In such cases, how may I know that which application is using mic at present?
Install the app named Unhack from playstore or from the link given below. It gives you a list of all applications using mic, camera etc. separately.
https://www.apkmonk.com/app/com.lucideustech.unhack/