The plan gives it an edge over its competitors who no longer offer unlimited plans to new customers.A look at the pluses and minuses of all three U.S. iPhone 4S carriers, AT&T, Sprint and Verizon.Sprint customer it thrills me that the carrier will finally get the iPhone. Will I drop my Android phone for the iPhone 4S?Apple's iPhone 4S was made available for pre-order from AT&T, Sprint and Verizon on Friday morning.
