My daughter has acquired a new vehicle, and she has connected her phone to the infotainment system via Bluetooth.

However, it seems that the in-car microphone is either badly placed or poor quality because those called get very quiet or 'in a tunnel' type of reception.

Wondering if a separate visor-mounted Bluetooth car kit would work as a sepearte microphone?  or would it likely cause problems having two set ups trying to access the phone at the same time?

Are their Bluetooth enabled 'extension' mics available.