Trying to decide on which carrier to go with for the next iPhone, and would like some advice. Was on O2 for my 3G with no real problems, but I'm tempted by Orange's bigger 3G coverage. My only gripe is their 750mb fair use policy on data; can someone explain what this is and how it compared to O2's unlimited? As I may be thinking of jailbreaking and tethering at some point. Stuff like Orange Wednesdays could be useful, too. I'm on O2's simplicity at the moment, as I've sold my 3G. Some advice would help me a lot!