The percentage of cell-phone owners who use their devices to access the Internet has more than doubled since 2009, a new Pew study of how people use their phones shows. Email use has rocketed during that time, too. But the most popular use of cell phones -- by percentage of phone owners -- is as cameras:

Blacks and Hispanics were more likely than white people to use their phones as Internet devices, the study found -- a finding that may interest publishers contemplating cutting back on print. Overall, "younger adults, people with higher levels of education, and those living in households earning $75,000 or more are more likely than others to have performed several of the cell phone activities the Pew Internet Project queried," the report says.

“Cell users now treat their gadget as a body appendage," Pew Internet & American Life Project director Lee Rainie said by email. "There is striking growth in the number of people who are taking advantage of the growing number of functions that these phones can perform and there isn’t much evidence yet that the pace of change is slowing down.”

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