AT&T Dials Up Limits on Web Data

In a significant shift in how phone carriers bill customers, AT&T Inc. will stop selling unlimited Internet data plans to new customers that buy smartphones and iPads, and will instead begin charging more for heavy bandwidth users. New AT&T customers will have to chose between two data plans with monthly usage limits—and pay additional fees for extra use. Existing customers, however, can stick with their current plans, AT&T said.