Plum Optimax 11 official Pictures. Plum Optimax 11 is a Smartphone of plum. The Plum Optimax 11 Android Tablet. Announced Mar 2018. Features 8.0″ Display Spreadtrum SC7731G Chipset 5 MP Primary Camera 2 MP Front Camera 3500 MAh Battery 16 GB Storage 1000 MB RAM. Plum Optimax 11 price starts.