Contracts aren't required for data usage on iPads. You can fire up a data plan on an as needed basis. Because the iPhone4S is the same phone whether one chooses AT&T, Verizon, or Sprint, I'd bet that the new iPads will offer that choice, too. That would mean that if you didn't like one provider, you could easily try another. Rooting (on Android) or jailbreaking (on iOS) gives you administrative access to the device's file system. It removes a lot of restrictions involved with using the device. On an iOS device, for instance, you can install software that doesn't come from the App Store. Rooting/jailbreaking does void one's warranty, however, I believe that warranty status can be restored by restoring the device to factory condition. In other words, you won't get any advice or support from the manufacturer if you root/jailbreak. Rooting/jailbreaking also removes some of the built-in security on these devices. You become responsible for your own security. As an aside, the word "rooting" can be offensive to Australians if used in the right wrong context.