As I understand it the Atrix works as any other GPS device would. In other words it just has the receiver and it doesn't use mobile networks or any other data besides GPS. My question is can I go roam about town and use my GPS without any charges from ATT. I'm using google navigation and google earth. I assumed that if I just looked around the map a bit while connected to wi-fi it would download and store the information I need to use about town (then I could use it without any data connection). I never use the mobile data, so when I'm outside of wi-fi I have no data connection. I could still use GPS though correct? Assuming the maps WERE indeed stored on my phone. If it doesn't work as I assume it does (the maps aren't stored on the phone) then is there a way to ensure that they are? So I can use GPS outside of an internet connection. Thanks very much for any replies, greatly appreciated.