You don't need a data connection for on board GPS, who told you this? You download the map to you SD card (as well as downloading any points-of-interest, traffic cams points, etc if not already included in map), and then your set. Over the years, the only time I needed active data for on board GPS was when I was using GarminXT's Google Search function (WinMobile), and even then I didn't "need" it, I just wanted to use it, lol!
And Garmin doesn't have an Android app, unless something has changed since June 4th of this year.
Edit: I think you are referring to aGPS. Yes, that requires data, but is not necessary for normal GPS functions. It's like an icing on the cake kind of thing. Useful, sure, but not necessary.
Quote:
Originally Posted by aman1127
I believe garmin or tom tom has an android app. But either way, you need a data connection. If you have a gps unit, its better to update the map for that; no data required
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