63 percent of people who own cell phones use them to get online, Pew reports. That's not exactly surprising, but it's double the percentage of people who said they did so in April 2009.

One-third of those people (21 percent of the total) "mostly use their phone to access the internet, as opposed to other devices like a desktop, laptop, or tablet computer," Pew says. Such users are likely to be young, not white, and "with relatively low income and education levels."

Related: More people seeking location-based information on smartphones | Pew: A third of people without broadband have a smartphone