I believe it just goes off the gps so data isn't require. For example you can have no service but still be able to use the gps. Searching for things will require data though such as coffee shops, food, ect..
So does it allow you to download the whole map for US once, or do you have to pre-load the map for every trip separately?
Does that mean I can use my iPod Touch 4G for Navigation? Once the maps are loaded?
So does it allow you to download the whole map for US once, or do you have to pre-load the map for every trip separately?