The most recent Kantar Worldpanel ComTech report is still not available to the public, but Forbes managed to get ahold of some early data for the United States. Apparently, Windows Phone now accounts for 5.6% of all smartphone sales in three months of 2013 (ending with March 31), a noticeable leap from the same period a year ago (3.7%). More importantly, another third-place contender, BlackBerry slipped from 2.6% to 0.9% in the same timeframe.

In just one month of this year, Microsoft’s mobile platform managed to jump from 4.1% (3 months ending Feb) to 5.6% (3 months ending Mar) of all smartphone sales. Nokia was the one to get most of the cake, with their own share of the device market jumping from 1% last year to 4% in the first quarter of the 2013. Kantar analysts consider this boost to be coming from the first time smartphone buyers, and based on some 240,000 interviews conducted in the U.S. each year, they found it to be true.

"52% of people it surveyed who swapped to Windows from a previous OS had previously owned a feature phone. By contrast, 55% of people who’d bought an iPhone had previously had another smartphone," Forbes reports. Kantar analyst May-Ann Parlato believes that this trend will continue, as "many will upgrade (from a feature phone) over the coming year, which will ultimately contribute to more growth for the Windows brand." According to the same report, iOS dropped from 44.6% to 43.7% of all smartphones sold in the United States while Android went up from 47.9% to 49.3%.