When I open my 5s, especially after some time of it being locked (maybe 10 minutes), the opening animations can sometimes be a little jerky. This is easiest to reproduce on my phone with the live wallpaper- if I start moving the phone orientation right after the screen goes on, there will be a freeze on the bubble animations for a fraction of a second. Like I said, this is especially likely if it's been off for more than a few minutes. Similarly, when i touch Id right into the home screen right when the screen goes on, the "zoom in" animation freezes for a fraction of a second right before the icons reach their "final" positions. I'm not sure if it's the parallax or the animation or some other process, but it's a little jarring and uncomfortable. And this does not happen on my iphone 5- that handles all the parallax and animations beautifully, all the time. Has anyone else experienced this issue? I don't know if I have a bad unit or if ios 6 is better optimized for the 5 than it is for the 5s.