Over 2 weeks since 4S came out and we see what the 3 providers are offering. When you purchased the new 4S, did you STAY or SWITCH carrier? (Applies to first 7 questions ONLY) If you did not or not yet get 4S, choose why. Thanks! Poll question: IF you got 4S, did you change service (first 7 questions), and if no 4S yet, why?