Engadget has come across all the different prototypes currently existing for Windows Phone 7, side by side. The one to the left is the Samsung handset we just finished covering, in the middle was the poster child of Windows Phone 7 at MWC 2010, and to the right is the slider that was first introduced at the Engadget Show a while back. There’s no detailed specs on the phones other than what Microsoft laid down as the requirment for running Windows Phone 7 for OEMs. Hopefully that will change soon.
Image Source: Engadget
