How small can a phone get? Apparently very small. The nano phone (no relation to the iPod nano or it's daddy, Apple), is a concept phone designed by Roman Kriheli.
The entire surface of the phone is a TFT touch screen display 4.2 inches in size and is protected by a 2-mm plastic shield. The screen can mimic surface controls like buttons and display video allowing you to use the phone vertically and horizontally. A fuel cell battery powers the phone and charging takes place via an induction field, something like a SplashPad.
via yanko design