With the unique invisible sensor technology, the front face has been simplified to one dot and one rectangle. The metal frame of U3 Pro is built in aluminum with dual anodized finishing, a characterized diamond-cut seem running through the center, which ties all elements on side of the phone. The finger print sensor has been integrated with Smartisan logo on back of the phone, together with the smart dual camera design, the rear face of U3 Pro is much cleaner than usual smartphones.

The mission of Smartisan is to draw upon a spirit of artisanship and perfectionism to create consumer electronic products (primarily smartphones) that offer a first-rate user experience, and to improve people's quality of life.