This mobile operation system was first launched in 2010. It"s based on Windows Mobile, but it also has several new applications. windows phone 7 development was a fast process so at first some Windows mobile applications were not compatible with it. Fortunately, this has been changing recently and now the new operating system is much more flexible. Windows phone 7 development was positively commented on when a beta version of the system was first launched. It was described as natural and intuitive, and it really is extremely user-friendly. Have you ever used this system? If not, you should definitely give it a try. The interface is called Metro and it consists of a given number of Tiles that you can add, remove or rearrange. The tiles are an easy way to get to all necessary functions and applications such as your phone, your web browser, video camera, email or games. Even a child could use the interface, it"s so easy! Actually, fast Windows phone 7 development is something really encreaible.I am going to to by an iPhone wth this system installed soon. The operating system is still being improved so I guess that by the time I start using my new iPhone, it will have changed a lot. Well, it"s always so with small electronic devices.