Something looks a bit off with that photo [1]. The screen size is wrong. It has the aspect ratio of a pre-5 iPhone (notice the extra-large gap between the bottom of the screen and the home button compared to [2]). It also appears to be running iOS 6, which I'm pretty sure isn't possible on a 5s.

[1]: http://geohot.com/mt.jpg [2]: http://images.apple.com/iphone/compare/images/compare_iphone...