 Although sharing a similar appearance with the Lumia 800, the Lumia 820 is a major overhaul over its predecessor, sporting a diagonal OLED display with scratch resistant glass, though lacking Gorilla Glass protection, 1.5 GHz dual-core processor, and an 8.7-megapixel camera.The phone will come with LTE connectivity and a wireless-charging option.The 820 is the first Nokia Windows Phone OS based smartphone to embed a microSD card slot.