Windows Phone 7.5 Mango

	KDramaStars Nokia Lumia 900 Vs Nokia Lumia 1020: Display, Hardware, Camera, Battery, Operating Systems ... KDramaStars It has 512MB of RAM, an internal storage of 16GB, and runs on the MicrosoftWindows Phone 7.5 Mango software. Meanwhile, the Lumia 1020 is ... Flag as irrelevant