For the first time, the amount that an average American household spends on its cellphone service is passing spending on traditional landlines.

According to The Associated Press ,""the most recent government data show that households spent $524, on average, on cell phone bills in 20qa06, compared with $542 for residential and pay-phone services. By now, though, consumers almost certainly spend more on their cell phone bills, several telecom industry analysts and officials said."

The news sets up some probable winners and losers over the next several years. AT&T (NYSE:T) and Verizon (NYSE:VZ) should both come out ahead, but not by as much as investors may think. Each of the companies has large cell phone operations, but the number of US cell customers is beginning to reach a point of saturation, just as landline customers did years ago. Cellular revenue will continue to grow, along with operating profits. But, landline revenue at these companies is likely to shrink, and that may accelerate as more people move to VoIP and cell phones.

The big loser will be Qwest (NYSE:Q). Most of its revenue come from landlines. It has no cellular business to speak of, so it is on the losing end of a trend, but does not have a play at the winner's table.

Of course, handset companies are likely to benefit. Motorola (NYSE:MOT) is still the leader in US handset sales. Nokia (NYSE:NOK), the world's largest handset company, would like to change that. And, there is always the Apple (NASDAQ:AAPL) iPhone. These days Apple always wins.

Douglas A. McIntyre is an editor at 247wallst.com.