eMarketer 2.16 billion smartphone users by 2016 2.16 billion smartphone users by 2016 2.16 billion smartphone users by 2016 more than 620 million smartphone users 2 billion emarketer.com 28% of the population more than 2 billion people around the world 28% of the population eMarketer eMarketer explosive growth eMarketer eMarketer 2.16 billion smartphone users by 2016 28% of the population eMarketer 28% of the population eMarketer 28% of the population explosive growth eMarketer smartphone users explosive growth 2.16 billion smartphone users by 2016 eMarketer 28% of the population eMarketer 28% of the population 2.16 billion smartphone users by 2016 more than 2 billion people around the world own a mobile device