the $10 premium data add on. The pre 3 is only 3g on sprint, why would anyone want to pay an additional $120 a year to still have 3g when they could have wimax 4g for the same price. With most large cities have usable 4g sprint coverage, I believe most people would want 4g. Also the price of the phone. Most like @ $199, the same as what the evo 3d and nexus s 4g will be $199.