This Window Concept Phone looks absolutely amazing. I've seen some concept transparent mobile phones before, but none as as thin and truly see-through as this design.
The coolest thing about this device is that the clear see-through screen actually mimics the weather. If it is a sunny day, the display on Window Concept Phone is clear. If it is raining, the display will show drops of water on it. On cold days, the phone looks like it is covered in frost.