About a quarter of mobile phone users consider the device their primary means of communication, and about four in 10 say their cellular phones give them a sense of personal security, Harris Interactive said.
Based on a nationwide survey in August of more than 1,100 U.S. adults, 74 percent had mobile phones, while 58 percent had landlines. One in 10 said they abandoned their wired-phone in favor of using a wireless phone exclusively. Another 5 percent said they were seriously considering a similar move within a year, and 47 percent said they were somewhat considering it.
Currently, about 13 percent of U.S. adults use only a mobile phone, or plan to do so within the next six months, the researcher said.
"Ma Bell could become a name for Trivial Pursuit before you know it," Joe Porus, vice president and chief architect for Harris, said in a statement.