There are plenty of things that have been changed about Android with Nokia’s first Android phone, the Nokia X. The most noticeable change is its user interface; the tile-based interface reminds you of Windows phone. Windows Phone users can try Nokia X UI on their handset with “Nokia X” preview app.
The Nokia X preview app brings the Nokia X user interface on any of your Windows Phone (Windows Phone 7.5, 8) handset. It works without any problems and you can get a real Nokia X feel on your phone, though it is little slow and buggy.