AT&T makes changes to unlimited data plans

In this July 21, 2009 file photo, a customer displays an Apple iPhone 3GS at an Apple store in Palo Alto, Calif. Apple on Tuesday, Jan. 5, 2010 said it is buying the mobile advertising company Quattro Wireless. It's a bet on the future of cell phone ads and steps up competition with rival Silicon Valley powerhouse Google. (AP Photo/Paul Sakuma, File)

June 2, 2010 2:29:12 PM PDT
Just a week before Apple is expected to unveil a new iPhone, its wireless carrier AT&T is making some big service changes.

Starting next Monday, AT&T will stop letting new customers sign up for its unlimited $30 Internet data plan for smart phones and iPads.

It hopes to ease congestion on its network by charging the people who use the most data more money.

Customers will have two new plans to choose from: one costs $25 a month and the second costs $15 a month. Both also come with a fee for anyone who goes over their usage limit.