BenQ B502 official Pictures. BenQ B502 is a Smartphone of benq. The BenQ B502 Android Smartphone. Announced Oct 2014. Features 5.0″ Display, MT6582 Chipset, 13 MP Primary Camera, 5 MP Front Camera, 1800 MAh Battery, 16 GB Storage, 2 GB RAM. BenQ B502 price starts.