According to statcounter, Android has come very close to surpassing Windows as the world's most popular operating system across desktop, laptop, tablet and mobile when combined.
February 2017 shows that Windows was it 38.6% while Android was at 37.4%.
“The idea of Android almost matching Windows would have been unthinkable five years ago,” commented Aodhan Cullen, CEO, StatCounter. “In January 2012 Windows held 82% global internet usage share compared to just 2.2% for Android.”
"Windows 10 will need to maintain momentum in order to combat the steady march of Android across all markets,” added Aodhan Cullen. " Statcounter: Android Comes Close to Challenge Windows For Top OS