I wanted to update a little since I've been using my iPad. I have downloaded topo maps for use without data connection. I haven't had a need to start my data plan and probably don't plan to. What I thought was pretty nifty and thought I'd share, is that my wife just got her new Samsung SIII. With our plan she is able to create a hotspot. So I decided to play around with it a little this weekend. I was rather impressed. For those maps that I didn't have downloaded in areas where she was able to get cell reception, (Verizon), it tracked us perfectly. I just hadn't seen much about hot spot tethering mentioned here, so just food for thought. For those that have wifi only pads this would work good for you. Maybe I've just restated an obvious connection type. But, eh...still feel good for sharing.