I have spent the past week or so playing with a Samsung Focus preloaded with the final build of Windows Phone 7.5, previously codenamed Mango. I have always appreciated what Windows Phone has to offer: a clean and intuitive user interface that works well, to put it simply. Windows Phone originally shipped lacking a few features, though. The NoDo update, for example, added copy and paste but the operating system still felt like it was lacking. Windows Phone 7.5 adopts Microsoft’s motto to “put people first,” and it does a fairly good job of that. There are hundreds of changes in Mango and in this hands-on look, I highlight a few changes that stood out to me during my time with the OS.