The next version of Windows phone is initially codenamed “Tango”. Now it is named Windows Phone 7.5 Refresh. This version is just minor update same like NoDo update. NoDo is first update version of Windows phone with few features like copy and paste. This Tango also coming with less features only. This Tango smartphone device going to launch  in China on March 21, 2012. It is having this list of features (few are officially confirmed and few are rumors) 1) It will help Windows Phone to run on...