[Walt]

From what I have been able to ascertain, the Fathom's GPS hardware is not connected thru a serial com port (as it is in many other phones). Therefore, one can't access it by setting an app to a com port number. Instead, one is "stuck" with only being able to access the GPS hardware thru the LG provided windows driver. I have a couple of older GPS apps that only offer com port numbers as setup options, and therefore I can't use them on my Fathom.

I am going to venture a guess that with Tom Tom, if it can't find any GPS hardware sitting behind a com port, it attempts to connect to an external GPS "puck" thru bluetooth.