Sorry if this has been posted before, but I need to know if there is any way to tell the difference between the iPad mini and iPad mini 2 from looking at the box. I know the original iPad mini shipped with the iOS 6 wallpaper on the front of the box and the iPad mini 2 with the iOS 7 wallpaper, but now it appears both minis show iOS 7 on the front? Is there any obvious way to tell without opening it?