Microsoft unveiled its next-generation Windows Phone operating system at Mobile World Congress in Barcelona this week. Windows Phone 7 Series is a massive departure from the firm’s ageing Windows Mobile platform and is a completely fresh approach to mobile phone software. It’s an evolution of the OS on its Zune HD media player and uses a very simple tiled home screen. The tiles are updated in real-time, feeding information from various sources to deliver a more interactive experience. Read on for all of the juicy details on what could be the best piece of software to ever come out of Microsoft.