I don't have it yet, waiting to get it. But I've been doing homework on this for the past week. Regarding the Android version, it uses wifi connection for the android based features (e.g. the navigation). So your options are: 1) wifi hotspot or 2) tethering from your smartphone's data plan. Option 2 is the most realistic application/use, but it would cost you to enable tethering on your smartphone with your carrier (e.g. AT&T charges $10/mo for enabling tethering). Specifically for navigation, you can purchase other nav/map apps (e.g. Copilot) that do allow you download the maps and use the nav app in an offline mode with just the GPS signal.

FAQ link: FAQ | J & T Distributing Store