I jumped over to Sprint for the cheaper bill and it's true, you get what you pay for. At work I had great signal (4 or 5 bars all the time) but the data speeds were horrid. The App Store was unusable, pages took forever to load, and Speed Test showed my download speed never making it higher then 0.3 Mbps. I drove right to the AT&T store after work to port my number over to them and order a new 4S. Sucks that I have to wait a couple weeks to get the device but oh well.