Apple released an unlocked and sim-free variant of the iPhone 5s on the US Apple online store. The unlocked model will let you insert a nano-SIM of your choice. The unlocked variant of the iPhone 5s can work on many GSM networks across the globe with no contract.
The unlocked version of the iPhone 5s includes the same exact capabilities of the non-unlocked models. For frequent world travelers an unlocked version of iPhone 5s is a worth looking option.
The unlocked varient of iPhone 5s comes in 16GB, 32GB, and 64GB capacities for $649, $749, and $849 respectively and in the same space gray, silver, and gold color options. The unlocked iPhone 5s models ship in 1-2 weeks from Apple’s online store.