Before Microsoft acquired Nokia, the company was heavily rumoured to be working on its own in-house Windows Phone device that was expected to ship in 2014 under the Surface moniker alongside its Surface Pro device. Unfortunately for Windows Phone fans, such a device never saw the light of day, but newly published images of a mysterious prototype might have just given us our first and only look at what Microsoft was exploring internally.
Possibly codenamed Raven, there isn't much information available about this prototype, other than the fact that it’s from the 2013-2014 time frame and is running an early pre-release build of Windows Phone 8.1. It’s powered by an unknown Qualcomm chip, has a 720p screen, features a Microsoft logo on the back, and a silver metal frame that matches the colour of the Surface 2 that released that same year.