Windows Phone wins 5.6 percent of U.S. smartphone sales For the three months ending April 13, Windows Phone captured 5.6 percent of all U.S. smartphone sales, Kantar Worldpanel ComTech reported Monday. That figure proved a healthy gain from the 3.8 percent share of sales for the same period in 2012. Windows Phone is even winning former Android users, according to Kantar. Among people who bought a Windows Phone in the last year, 23 percent jumped ship from Android, while 25 percent upgraded from another Windows Phone and 42 percent moved up from a feature phone. Android bit make sense since I remember reading a survey stating quarter of android users don't plan to buy one again.