sat nav requires hardware that I am fairly certain that the iPhone does not have. However, it might be possible that a bluetooth device could be used to connect to the iPhone and display geographic location. But the iPhone has to be programmed to be able to decipher the incomming data.
cheers for the reply
yes the iPhone would need hardware, a GPS bluetooth receiver.
Thats what i'm using with the Palm with TomTom software.
Do you (or anyone else) think that Apple will included satnav with the iPhone anytime soon?