Can't find anything in search. I have an offically unlocked iPhone 4 on telus in BC. My wife and I travel to the US a couple times a year and I can't figure out what sim card to buy. I need cheap data 500 to 1 gb and want free international text. Don't really care about international calling as I wont use it much. I hear that AT&T offers a pay as you go option for $50 with unlimited data and text but can't find anything on it. Thanks. There seems to be so many choices out there but never having done it I haven't got a clue. Any help directing me would be greatly appreciated.