 In February 2009 , Microsoft signed a deal with the third largest mobile phone maker , LG Electronics , to license Windows Mobile OS on 50 upcoming LG smartphone models . But in September 2009 , Palm , Inc. announced it would drop Windows Mobile from its smartphone line @-@ up . Gartner estimated that by the third quarter of 2009 Windows Mobile 's share of worldwide smartphone sales was 7 @.@ 9 % . By August 2010 , it was the least popular smartphone operating system , with a 5 % share of the worldwide smartphone market ( after Symbian , BlackBerry OS , Android and iOS ) . An October 2009 report in <unk> said that Acer will shift its focus from Windows Mobile to Google Android . The New York Times reported in 2009 that Windows Mobile " is foundering " , as cellphone makers desert it in favor of Google 's Android phone platform . It cited the difficulties in Microsoft 's business model , which involves charging handset manufacturers up to $ 25 for each copy of Windows Mobile , while rival Google gives away Android for free . From late 2009 analysts and media reports began to express concerns about the future viability of the Windows Mobile platform , and whether Microsoft would keep supporting it into the future . Samsung announced in November 2009 that it would phase out the Windows Mobile platform , to concentrate on its own Bada operating system , Google 's Android , and Microsoft 's Windows Phone . 
