Having recently purchased a Navman My80T in car GPS device I was eager to see what it could do.
Bluetooth connectivity for my phone worked like a charm out of the box, although this unit has the Navman Connect facility which does require an internet connection via the bluetooth phone.
I noticed that the only service provider in the Navman was Vodafone. I don’t have a vodafone phone, however I have found a solution that enabled Navman Connect to switch to and use the Data profile via my phone.
Note: for Connect to work, your phone must be on Telecom 3G and not using WiFi.