AVILA R1 is the first smartphone designed by ALIBABA Group. AVILA R1’s physical roller is made by aviation aluminum with delicate anti-slip texture. It provides precise control with 16-band-volume adjustment, which is also considered to avoid suddenly volume change due to unexpected turns. Besides, The roller can provide more friendly operation than touch. The C-shaped guiding light, on the back makes system prompts easily get, such as charging, missed calls etc. Reflected light of the roller comes into being a circle with the C-shaped guiding light, which has become the symbolic designing element of this phone.