Okay, I have heard of this being done, but can't find anything concrete. I have heard of people cutting down to size a regular sim card from an AT&T phone and using it in the iPad. I did that. Fits fine, but something is not working. who knows, maybe it doesn't really work, but the sim card I am using is a 3g card from a spare phone. Maybe I was hoping for too much. Any thoughts out there anyone? I keep getting the error, "the connection to the server was lost, please try again later"