17% of cell phone owners do most of their online browsing on their phone, rather than a computer or other device. Most do so for convenience, but for some their phone is their only option for online access.
Some 88% of U.S. adults own a cell phone of some kind as of April 2012, and more than half of these cell owners (55%) use their phone to go online. We call these individuals “cell internet users” throughout this report, and this represents a notable increase from the 31% of cell owners who said that they used their phone to go online as recently as April 2009.
Moreover, 31% of these current cell internet users say that they mostly go online using their cell phone, and not using some other device such as a desktop or laptop computer. That works out to 17% of all adult cell owners who are “cell-mostly internet users”—that is, who use their phone for most of their online browsing.
Read the full report, Cell Internet Use 2012, on the Pew Internet & American Life Project's website.