When TeliaSonera, the Nordic telecommunications operator, switched on the world’s fastest wireless network last December, customers quickly ratcheted up their consumption of mobile data tenfold.

Besides reaffirming the soundness of the operator’s investment in the new technology, called Long Term Evolution, or L.T.E., the data smorgasbord confirmed another truism: the days of flat-rate mobile data rates are probably drawing to a close.

All-you-can-eat plans — as they are known in the industry — were introduced when the mobile Web was in its infancy and demand was profitable and manageable. But with traffic booming, reflecting the growing popularity of smartphones, social networking and downloading music and video, network operators fear that flat-rate plans will eat into profits or even fail to cover costs.

The result is likely to be higher prices for consumers.

To read this report from The New York Times in full, see:
www.nytimes.com/2010/04/19/technology/internet/19iht-tiered.html