Mute button on Blackberry Curve?

I am trying to unlock my Blackberry. I accidentally locked the keypad and it’s telling me to press Mute to unlock. I don’t see a Mute button and though I keep googling (and seeing stuff about an easy access mute button), nothing seems to be working. Help!

Look on the top edge of the case. You can also try hitting the * and the green button simultaneously.

Yeah, on mine it’s on the top right edge of the case.