Do you have to order the Nav. to get it?

but bucktooth is standard. j/k... bwahahahahahaa.

... from the B7 A4 press realease:

"Mobile phone preparations for D/E-network phones offer convenient voice control for entering and dialling up to 50 different numbers. Digital signal processing serves to compensate disturbing noise and guarantees excellent voice quality. The choice of a multifunction steering wheel ensures a particularly high degree of operating convenience. The Bluetooth interface guarantees the system's future compatibility."