iPhone 5S unlocked version available at Apple Online Store

Credit: Apple

Until now the iPhone 5S has been offered by Apple with a contract with AT&T, Sprint, and Verizon, and without a contract at T-Mobile.

The unlocked model costs $649 for the 16GB version, $749 for the 32GB option and $849 for the 64GB version.

Ship times are listed as 1 to 2 weeks, with 3 to 5 business days for the off-contract version at T-Mobile.

The smartphone comes in the same space gray, silver, and gold color options as in the case of carrier versions.