The Windows Phone 8.1

Microsoft announced the latest version of their smartphone OS, Windows Phone 8.1...adds a long-awaited notification center, "Action Center"—which gathers your new messages in a central location and provides quick access to four basic phone functions, such as turning on Wi-Fi, GPS, or Airplane mode. And Windows Phone 8.1's Cortana, the virtual assistant that's Microsoft's answer to Google Now and Siri, and Internet Explorer 11.