The goal of this prototype smartphone made together with KDDI, as its name suggest, was to come up with a formative language for a smartphone that was universal and beautiful. We came up with a theory that the universal quality in which the shape of a smartphone could create, was preventing the glass screen from cracking. Based on our theory, we selected the material for the frame, thickened the four corners, and when the level of glass screen was slightly lowered below the four corners, this structure has already made an attractive form. “Uncrackable” was the design purpose for the front side, so our goal for the back side was “non-slip.” We carved chunks of wood in the studio as we were thinking of the shape, and applied a rubber-like finish at the end. A beautiful smartphone was created from function. Many of the works at PRODUCT DESIGN CENTER consists of developing formative language. We continue to design a design through a process where we clarify what functions we want to set out and how the form should be in order to reach the goal.