Bluetooth hands free calling is a feature offered on my upper-level auto GPS devices. Bluetooth is simply a feature which allows two devices to communicate with each other wirelessly over a short distance. With a Bluetooth mouse and a computer with Bluetooth, they can work together without a cable tethering them via Bluetooth.In GPS devices the connection takes place between your GPS and your mobile phone. Your GPS device works like a Bluetooth headset. When a call comes into your phone, the caller ID information and the notification of an incoming call can display on your GPS.

This can be handy if your phone is in your pocket or purse, and offers a safer way to take the call.After answering the phone on your GPS, the speaker inside the GPS broadcasts the voice of the caller, and an internal microphone in the GPS picks up your voice, sends it back to your phone, and then your phone sends it back to the person on the other end of the call.Some GPS devices will allow you to dial POIs from the GPS. Navigate to a restaurant and dial your phone, directly from the GPS, to make a reservation.Other GPS devices can even view your phone’s phonebook from the GPS and you can make calls to those people directly from the GPS.