A federal antitrust class action lawsuit has been filed against Apple accusing the company of billing iPhone customers for voice and data services even after they cancel it. They also Apple of stifling competition and increasing prices for software apps by charging developers an annual 'application' fee.

The Courthouse News reports that lead plaintiff Eric Terrell accuses Apple of 'unlawful anticompetitive activities,' and claims that consumers did not contractually consent to Apple and AT&T's 5-year exclusivity agreement.

Terrell accused Apple of using program locks to prevent customers from using third-party Apps, unless the developers of those Apps paid a fee through iTunes, or handed over 30 percent of their revenue.

"Through these actions, Apple has unlawfully stifled competition, reduced output and consumer choice, and artificially increased prices in the aftermarkets for iPhone voice and data services for iPhone software applications," the complaint states.

Terrell says that even though AT&T and Apple no longer share revenues, they still enforce the terms of the agreement.