Microsoft Lumia 540 Dual SIM official Pictures. Microsoft Lumia 540 Dual SIM is a Smartphone of microsoft. The Microsoft Lumia 540 Dual SIM Windows Mobile Smartphone. Announced Apr 2015. Features 5.0″ Display, Snapdragon 200 Chipset, 8 MP Primary Camera, 5 MP Front Camera, 2200 MAh Battery, 8 GB Storage, 1000 MB RAM. Microsoft Lumia 540 Dual SIM price starts.