Mobile Internet users can access content, applications, and services using their cell phones. Recent PEW Internet research shows that more than half of U.S. cell phone owners have smartphones. Among them, some people have adopted a mobile phone and use it as a major Internet access medium; they...

Mobile Internet users can access content, applications, and services using their cell phones. Recent PEW Internet research shows that more than half of U.S. cell phone owners have smartphones. Among them, some people have adopted a mobile phone and use it as a major Internet access medium; they...