Nokia adopted Windows Phone as it’s smartphone platform last year officially and ,already two variants from Nokia using Windows Phone 7 Operating System are available in the market.
Nokia Lumia 800 is the first Windows Phone ever from Nokia ,and Nokia have started shipping the second and affordable Windows phone Nokia Lumia 710 .
Windows Phone 7 is the mobile operating system developed by Microsoft ,already there are several key players in the market offering phones with Windows Phone 7 ,like Samsung,HTC . Nokia is quite new to the Windows Phone market .
Most of the people who are favorable to Microsoft report Windows Phone O/S as sleek and fast one ,but as I live with Samsung Galaxy SII that uses Android 2.3(Gingerbread) and I have tested Windows phone 7 with HTC T8697,would predict that Nokia will not overtake Android phones as those are far most ahead of the crappy Windows phones.