The document discusses smartphones, including that a smartphone is a cellular phone that can perform computer functions with an operating system capable of running applications. It notes that the top smartphone platforms in 2012 were Android at 72% and iOS at 14%, and in the US in 2013 Android was 48% and iOS was 43%. Additional facts provided include that as of 2014 there were over 1.7 billion smartphone users worldwide, comprising one in five people, and that in the US 56% of adults own smartphones, with highest ownership among 25-34 year olds. The document also lists various uses of smartphones like calling, texting, internet, cameras, and games.