Prison Break star Wentworth Miller has quit smoking after 10 years.

The hunky actor admits he simply switched his cigarette habit to a new addiction - a BlackBerry.

Miller says, "My new addiction is a BlackBerry... I'm constantly on the 'CrackBerry'."

And the actor reveals he quit cold turkey.

He adds, "I didn't want to try the (nicotine) patch because I thought, 'Chemicals got me into this... I just want to stop, cold turkey on my own willpower.

"I've had maybe four or five cigarettes in the last eight months, so, as far as I'm concerned, that's quitting... I think I'm done with it."