Lenovo A7-50 A3500 official Pictures. Lenovo A7-50 A3500 is a Smartphone of lenovo. The Lenovo A7-50 A3500 Android Tablet. Announced Apr 2014. Features 7.0″ Display, MT8382 Chipset, 5 MP Primary Camera, 2 MP Front Camera, 3450 MAh Battery, 16 GB Storage, 1000 MB RAM. Lenovo A7-50 A3500 price starts.