If you already have AT&T service, your contract and bill will be unaffected.
The new plans roll out Sunday, the Dallas-based company said Wednesday.
AT&T's current smartphone data plans come in three flavors: 200 megabytes of data for $15 a month, two gigabytes for $25, or four gigabytes for $45. As of Sunday, those plans will be scrapped in favor of a new trio: 300 megabytes of data for $20 a month, three gigabytes for $30 or five gigabytes for $50.
In the new pricing structure for tablets, the nation's second-largest mobile carrier will increase the price on only the top two tiers of data. So the 250-megabytes-for-$15 plan will remain in tact for tablet owners, and the new options will be three gigabytes of data for $30 a month and five gigabytes for $50.
Although the plans are more expensive, the adjustment offers more gigs for the money -- essentially tacking on an extra gigabyte of data for $5 a month in the top two plans.
"Customers are using more data than ever before," David Christopher, AT&T's chief marketing officer, said in a statement. "Our new plans are driven by this increasing demand in a highly competitive environment, and continue to deliver a great value to customers, especially as we continue our 4G LTE deployment."
-- Nathan Olivarez-Giles
Photo: AT&T logo. Credit: Lisa Poole / Associated Press