This unlocked model works on AT&T and T-Mobile in the United States, and also means that you will not need a contract with those carriers if you buy this specific model. The SIM-free iPhone 5s comes in 16GB, 32GB, and 64GB capacities for $649, $749, and $849, and it comes in the same space gray, silver, and gold color options as the carrier-tied versions. The models ship in 1-2 weeks from Apple’s online store, and should become available in Apple retail stores in the coming weeks.
Since launch, Apple has sold an unlocked variant of the iPhone 5s for T-Mobile. However, that model includes a T-Mobile SIM card and could potentially be tied to a T-Mobile account. Today’s release includes no SIM card. This is also different than an AT&T/GSM model because that device is tied to an AT&T contract even at full price. A customer would need to manually unlock that device to get the same effect as today’s new offering. In essence, today’s SIM-free model works the same way as other unlocked iPhone 5s units, but it comes with no SIM card and is completely unlocked the moment you turn it on.
A SIM-free version of the iPhone 5c has been available since its launch in September. Many international countries have had availability of the fully unlocked iPhone 5s for several weeks.