Moved to a more appropriate section.
(1) If you can navigate just by using lat/long data, you can get that read out on the device itself. However, if you need to turn that data into useful information, i.e. on a map, then you need a data plan, and in most cases you need a BB data plan. What good is using WiFi for map access when most of the time you will need it, you will be out of WiFi range?
(2) There are no map apps that I know of that will allow you to download a map to your device. They are generally too large and there isn't enough internal memory. Most of the map apps download sections of the map as you move. Go tot he yellow sticky at the top of the GPS & Maps section and read the review of the various map apps. There are a couple apps you can run from the device, such as Garmin, but they aren't free.
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