The use smartphones and mobile devices continues to increase. According to comScore’s mobile subscriber market share report in Q4 of 2011, Android gained 3.1 share points and Android handsets now represent 47% of the US smartphone market. iPhone also gained some points thanks to the recent launch of iPhone 4S. iPhone covers 30% of the smartphone market. comScore also noted that almost 40% of the US mobile population carry smartphones and that means nearly 100 million people.