Plum Optimax 12 official Pictures. Plum Optimax 12 is a Smartphone of plum. The Plum Optimax 12 Android Tablet. Announced Mar 2018. Features 7.0″ Display MT8321 Chipset 5 MP Primary Camera 2 MP Front Camera 2400 MAh Battery 8 GB Storage 1000 MB RAM. Plum Optimax 12 price starts.