Despite the considerable efforts of Nokia and Microsoft to achieve rapid growth platform Windows Phone has not yet been possible. At the moment, according to various estimates, this smartphone OS in fifth or sixth place, losing not only the iOS and Android, but written-off to the scrap Symbian, BlackBerry, and according to some, even Bada from Samsung. Despite this could happen in November momentous event for the U.S. market. If current dynamics, Windows Phone beats, and then bypass the most popular OS in the corresponding BlackBerry smartphones RIM. In this "overtaking" the merit of the two competing platforms. If Windows Phone shows a slow but growing, the BlackBerry steadily losing popularity, and tends to that of WP faster than that to her. Such data are based on statistics StatCounter, which show only the current dynamics, giving the average growth data. This information does not take into account planned for the fall release of new versions of operating systems. Meanwhile, not only Microsoft has high hopes for WP8, and Research in Motion is hoping to change the negative dynamics when new smartphones with BlackBerry 10. So it is possible that these StatCounter undergo some changes, but the surest is to assume that the real struggle between the above mentioned mobile OS will unfold in 2013, when the device with their new versions become mass market.