The large majority of U.S.-based iPhone users are happy with AT&T, according to a new study by the Yankee Group. CNNMoney reports that 73% of iPhone users are “very satisfied” with AT&T, a number that compares favorably to how non-iPhone smartphone users feel about AT&T. The survey found the satisfaction rate of AT&T subscribers as a whole is 68%, while AT&T smartphone users were only slightly more satisfied at 69%.…
