Not sure if this is a stupid question but can someone explain to me why a 3G iPad cannot be used as a cellular phone on the 3G network? I know I can receive SMS on my iPad on the 2degrees network in NZ. Why can't I send them? Yeah I know you might look a bit silly walking down the street with a iPad held up to your ear but I'm thinking bluetooth OK! I'm sure its just Apple being Apple. But is it a hardware or software constraint? If firm/software is there a JB app that will let me do this oneday?