I just got an ipad 2 wifi. I'm still trying to figure it out. I'd tried to set up a data plan online yesterday with AT&T but could not do so because I don't have an IMEI # or ICCD (I think is what it was). Are there Ipads that aren't compatible with data and are strictly wifi only? Or if I take it to like Verizon or whatnot, can they hook it up?