Apple Store now selling unlocked iPhone 4 in U.S.
Apple now is selling unlocked versions of the iPhone 4 in both 16 and 32GB versions, white or black. Since using the iPhone without a designated carrier requires a SIM card, only the GSM version is available as a carrrier-independent and contract-free phone. The CDMA version remains available on the Verizon network.
Those who travel internationally or don't wish to be committed to an AT&T contract are the target audience for unlocked phones. And while unlocked phones have been available through various unoffical jailbreaking techniques, this provides an Apple-approved way of owning an iPhone that can be used on multiple carriers through the swapping of SIMS.
Prices for the unlocked phones with no contract are steep, however, with the 16GB version coming in at $649 and the 32GB one at $749. Those prices also may attract international buyers, though, since prices for the iPhone are typically much higher in Europe and other regions.