The stated ROM amount shows the maximum available ROM with nothing installed. However, the Android/Windows OS and pre-installed software from the manufacturer will occupy some of this ROM. The available ROM on the device will therefore be slightly less than the ROM listed.
Dual sim dual standby (2 Micro SIM Card Slots and 1 SD Card Slot). Android 7.0 with1.3G MT6580A, Quad-core processor and1GB RAM 16GB ROM. Dual real camera ,13.0MP 2.0MP high definition back camera with Auto Focus,double lens and double sensor give rise to twice of the incoming light and sensitive area,take sharpe photographs and better color reduction.