Plum Sync 4.0 official Pictures. Plum Sync 4.0 is a Smartphone of plum. The Plum Sync 4.0 Android Smartphone. Announced May 2014. Features 4.0″ Display, MT6572M Chipset, 5 MP Primary Camera, 1.3 MP Front Camera, 1200 MAh Battery, 512 MB Storage, 256 MB RAM. Plum Sync 4.0 price starts.