A new report from market research firm Knowledge Networks found that smartphone and internet-enabled mobile devices are moving into the mainstream, with nearly 45 million U.S. households using the technology.

That figure represents 38 percent of U.S. homes, the report noted, which is five percentage points higher than last year.

According to Knowledge Networks, smartphone ownership increased nearly 50 percent from 2010 to 2011, while 6 percent of U.S. households now own at least one tablet. Comparatively, fewer than 1 percent of homes owned a tablet at this time last year.

"As smartphones become the standard and tablets continue to grow, understanding distributed media becomes more and more important to media sellers and buyers alike," David Tice, vice president and group account director at Knowledge Networks, said.

While the United States leads the way in smartphone and mobile phone accessories adoption, households around the world are also utilizing the devices more frequently. According to recent figures from MarketsandMarkets, smartphones represent 14 percent of the global mobile phone market.