In China, currently nearly 89% of Internet users use smartphones to go online, according to the CNNIC.
In the United States nearly two-thirds of Americans are now smartphone users, and for many these devices are their entry point to the Internet world, according to the PEW Research Center.
Worldwide, eMarketer forecasts that by 2018 there will be over 2.73 billion smartphone users. In the Internet Report by KPCB, some very interesting aspects of time spent per day by Adult Internet users. A report summary can be seen at Technology Personalized.
In the United Kingdom, an Ofcom survey has confirmed that smartphones are the main device for going online. Two thirds of the population own a smartphone using it for nearly two hours every day to browse the internet, access social media, bank and shop online.