The Cellphones on Verizon's system have GPS build in.
The ones in Union Wireless do not. The Union system calculates coordinates if two or more towers receive
the signal, so most report the coordinates.
The Land line report the address, and the system has a data file of addresses with coordinates, so there is also a map point for Land line phones.
We only get one or two calls each week that do not show a map point of the location.
Thanks for the 411.