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Lumia 800 vs Lumia 900 rear
The Lumia 900 measures 127.8mm by 68.5mm by 11.5mm and weighs 160g. By comparison, the 800 has a chassis measuring 116.5mm by 61.2mm by 12.1mm and weighs 142g.
Unlike the Lumia 800, the 900 uses a flat piece of glass for the display rather than rounded edges. However, it provides a similar level of camera functionality, with Carl Zeiss optics on board.
Image credit: Ben Woods