Nokia Asha 503 Dual SIM official Pictures. Nokia Asha 503 Dual SIM is a Smartphone of nokia. The Nokia Asha 503 Dual SIM Smartphone. Announced Oct 2013. Features 3.0″ Display, 5 MP Primary Camera, 1200 MAh Battery, Corning Gorilla Glass. Nokia Asha 503 Dual SIM price starts.