To encourage the voluntary desegregation, districts started developing magnet schools to draw students to specialized schools all across their districts. Each magnet school would have a specialized curriculum that would draw students based on their interests.
Android holds the largest number of installed-base devices, with 1.9 billion in use in 2014, compared with 682 million iOS/Mac OS installed-base devices. Check out the link Android domination to continue in 2014; iPhone loses ground.
Windows Phone and Blackberry users, however, will have to wait a little longer for the bigger groups to become available. Facebook-owned WhatsApp now has 1 billion active users, who send 42 billion messages, 1.6 billion photos, and 250 million videos every day. There's also 1 billion groups active on the service.