Let us have a look at some of these not-so-known traits of the new OS, and also dwell on how the ‘well known’ features may affect your experience on the new Windows 8.1 for your mobile device. While most Windows phone enthusiasts would now be aware of the major changes that would be included with the new Windows Phone 8.1 OS, there are always those features which are ‘add-ons’ to support the primary attributes.