Nokia Lumia 730 Dual Sim has display Size 4.7", operating system Microsoft Windows Phone 8.1. The device has ram 1 GB too, card support is microSD, up to 256 GB (dedicated slot), it has 8 GB, 1 GB RAM hard disk. Back camera 6.7 MP is awesome, front camera 5 MP is also not bad. Lumia 730 Dual Sim has power storage, . Device status is Available