Has anyone used this phone? How is it in terms of batter life, user friendly and other features.

Hi , Its windows phone 7.5, quite fun to use, if you have used android, you will miss few things like freedom to do anything you may want to do with your phone and sometimes lack of apps. But if you have used windows phone for long then you will find Android little laggy as compared to windows phone however, windows phone is more organized than Android and looks clean.