I am not sure which is the purpose of giving one's GPS device in the track, but when I tried to select one, I did not find
any Nokia, Sony-Ericsson or Samsung devices. Some of their models nowadays also have an internal GPS device and external
GPS devices have been possible before via Bluetooth. Because the number of models is huge, I suggest that a general class of
mobile phones is added, or "Symbian S60 phone". I think in mobile phones the navigation SW is actually more relevant than the phone model. I am using a program "ViewRanger" with a set of Finland topographic maps in Nokia 6220C phone.