As smartphone shipments topped the one billion mark for the first time in 2013, Android
continues to dominate the market. According to IDC
, Google's open operating system was installed on almost 80 percent of all smartphones shipped in the past year, up from just 49 percent in 2011. Apple's iOS
remains number 2 in the increasingly concentrated market, in which the market share of Windows Phone and BlackBerry OS remains in the low single-digits.