Android (operating system) OpenSignal, who develops both Android and iOS apps, concluded that although fragmentation can make development trickier, Android's wider global reach also increases the potential reward. Research company Canalys estimated in the second quarter of 2009, that Android had a 2.8% share of worldwide smartphone shipments. By May 2010, Android had a 10% worldwide smartphone market share, overtaking Windows Mobile, whilst in the US Android held a 28% share, overtaking iPhone OS. By the fourth quarter of 2010, its worldwide share had grown to 33% of the market becoming the top-selling smartphone platform, overtaking Symbian. In the US it became the
Usage share of operating systems and use both. Conversely, sales underestimate usage by not counting unauthorized copies. For example, in 2009, approximately 80% of software sold in China were due to copyright infringement. In 2007, the statistics from an automated update of IE7 for registered Windows computers differed with the observed web browser share, leading one writer to estimate that 25–35% of all Windows XP installations were illegal. The usage share of Microsoft's latest client operating system Windows 10 has been slowly increasing since July/August 2016 (while Windows 7 has had a slight decrease at the same time), reaching around 27.15% in December 2016. Windows