Poor microphone quality using Samsung S9

On all my ring devices I notice that my voice is barely audible when using my Samsung Galaxy S9 phone to communicate with people via the ring Android app. I can hear and see people without issues. My wife also has an S9 and has the same issue. We have no issues with the microphone using any other application. So it's not a fault with the phones. When on a computer I have no such issue with the microphone. I have read about such issues with Samsung devices, but I can't believe there is not a fix, as it's such a common device.