Depending on the screen size, the A design lineup consists of four products - A3, A5, A7 and A9. The standardization of dimensions and other elements helped increase the efficiency of mass production and enhanced the consistency of the design. A layer of 2.5D glass with a high surface tension on the front and the back delivers a smooth yet high-density surface. The solid metal frame surrounding the refined surfaces appeals to the mind, while the optimum grip of the phone is emotionally satisfying. The A design emphasizes tension and harmony through the ambiguous expression of, and balance between, two different materials.