While many overseas wireless providers choose to not subsidize customers’ new phone purchases in exchange for locking the consumer into a contract, it’s still the prevailing model among three of the four major wireless companies here in the U.S., with T-Mobile the sole provider offering only non-contract plans (sort of). But with AT&T recently dipping its toes into the water to encourage customers to buy their own phones, the market may be in for a major change. [More]