But they only work on tmobile and AT&T?
http://9to5mac.com/2013/11/22/apple-starts-selling-unlocked-sim-free-iphone-5s-in-the-u-s/
http://9to5mac.com/2013/11/22/apple-starts-selling-unlocked-sim-free-iphone-5s-in-the-u-s/