I know Telus charges you $30 a mo... for data. Which is required for GPS usage.
GPS doesn't use data, sat nav and other navigation/mapping software using GPS information on the other hand does.
The TrekBuddy.net app doesn't use network connections at all, just GPS, however you have to plan ahead and get your own maps as a result, which is fine if you know you won't have coverage for what ever reason and have the time/effort to put everything togeather.
What's better/more accurate, GPS or triangulation?
The answer is, it depends.
From what I know about RadioInfo functionality on the BB, the apps can only get info about the currect tower you are connected to, so they can't do triangulation anyway.
If they could triangulation and you had a few pico or nano base stations near by then the accuracy could be better then GPS especially if you are in a tunnel for instance, indoors, or in the urban canon. GPS doesn't play nice with big things with lots of mass that absorb the signal.
If the phones would hand off all the tower info to apps, then triangulation could be used alone or to augment GPS in a similar fashion that A-GPS does, Google and OpenCellID.org and no doubt many others are building databases of cell tower locations from GPS handsets.
I found a thread from Google talking about the functionality of the storms GPS and google maps. I've subscribed to this thread for email updates but thought I would post it for anyone who was interested.....
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