Maria Shriver is donating her old cell phone to charity after the California First Lady was busted by TMZ photogs earlier this week yaking on her cell phone while driving — a move her husband, Gov. Arnold Schwarzenegger, made illegal in the state last year.

“I’m sorry,” Shriver in a statement Thursday. “I will be donating my favorite old cell phone to my Women’s Conference partner Verizon through their HopeLine program that helps domestic violence shelters. I invite anyone else who wants to recycle their old phone to join me. That’s my version of swift action with a higher purpose.”

On Wednesday, Gov. Arnold sent a Twitter message to Harvey Levin, thanking the TMZ editor for dropping dime on Maria: “Thanks for bringing her violations to my attention. There’s going to be swift action.”