The iPhone 3G was the most frequently used phone for going online for nearly all of the year, the researchers at Nielsen report. About 4 percent of all US active cellphone owners used Apple's 2008 smartphone to get online between January and October. Its results were helped both by the iPhone 3G having sold by itself for the first half of the year and continuing on as a $99 model after the iPhone 3GS became available in June.
