Smartphones and tablets account for more than 20% of US internet use

As mobile devices like smartphones and tablets continue to become increasingly powerful, more and more consumers are using them to browse the web instead of traditional computers.

A new study from online ad network Chitika finds that smartphones and tablets make up more than 20 percent of web traffic in the U.S., with the lion's share coming from Apple devices like the iPad, iPhone 4S and iPod Touch.

Of those surfing the internet in the U.S., smartphone users account for 14.6 percent and tablet users make up 5.6 percent.

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