Celkon A402 official Pictures. Celkon A402 is a Smartphone of celkon. The Celkon A402 Android Smartphone. Announced Jun 2015. Features 4.0″ Display, Spreadtrum 7715 Chipset, 3.15 MP Primary Camera, 1.3 MP Front Camera, 2000 MAh Battery, 4 GB Storage, 512 MB RAM. Celkon A402 price starts.