Micromax Bolt D320 official Pictures. Micromax Bolt D320 is a Smartphone of micromax. The Micromax Bolt D320 Android Smartphone. Announced Mar 2015. Features 4.5″ Display, MT6572 Chipset, 3.15 MP Primary Camera, 1600 MAh Battery, 4 GB Storage, 512 MB RAM. Micromax Bolt D320 price starts.