Table - US Smart Phone Users By OS

Android, which grew rapidly in popularity soon after its release, fell from triple-digit to double-digit increases in users in 2012—that year its growth rate actually lagged behind iOS. In 2013 and 2014, eMarketer predicts, growth rates for both systems will be almost identical, varying by less than a percentage point. The compound annual growth rate (CAGR) between 2011 and 2014 will be slightly higher for iOS than for Android, and in overall reach among the US population, Android will be ahead by just 4 points in 2014. Read the rest at eMarketer.