Use Bluetooth device or Speaker Phone Function

[BlueVoice]

I've tried using the Roadster 2 when making phone calls in the car. The parties on the other end had trouble hearing me. When I shut the Roadster and used the speaker phone feature of the phone itself, they said it was must better.

 

[B. Diddy]

Welcome to Android Central! In case anyone else is wondering, this is the Roadster 2: Motorola Roadster 2 Bluetooth In-Car Speakerphone - Motorola

Can you figure out where the microphone opening is? There are probably two openings, since there ought to be a second one for noise cancellation. Make sure those openings aren't blocked by anything.