A crystal concept phone that's thinner than a credit card.

Ever since the Motorola V3 became a huge hit, mobile phone manufacturers have been trying all sorts of ways to make their phones thinner. The Motorola RAZR series, Samsung SGH-X828, and Sony Ericsson W880i all follow this design philosophy. However, upon seeing the concept phone below, all these phones would surely give up the claim to the title of the thinnest phone.