I recently came up with the following thought experiment: In a place where driving while using a hand-held phone is illegal, get a toy cell phone. Then drive around with it held up to your ear. When you get pulled over, show the officer at your window that you weren't using a cell phone, but just playing at it. What will happen?
When I ran this idea by TT Tom, he speculated, "You'll be shot for annoying the cop that much." But seriously, what is the legal status of such behaviour? I imagine that you can do the exact same actions as if you were on the phone, but not be subject to any penalty.