Windows phone 7 Smartphone Nokia Lumia 800 is currently one of the most popular Windows phone 7 smartphones. The battery had yet mismanaged something, so that has been subjected to some criticism of customers Nokia. The latest update now released for the Nokia Lumia 800, now significantly improved battery life. The update is now available for Smartphone without branding, Lumia 800 with a carrier branding will get the update as usual with a delay. In a video how to play up the update, shows Nokia.