Charlie LOVES to pick up any phone-shaped object and start a fake conversation with Mommy or Daddy. He must understand how the phone works b/c he will pause to hear a (non-existent) reply and then share his wisdom in response.
Sometimes he will pick up our phone, but sometimes he'll just pick up a wooden block and hold it up to his ear.
We don't even talk on the phone very often from home, b/c we get awful reception in our house. I think kids just love the idea of phones! It cracks me up, each and every time...
Does your LO have fake phone conversations with fake (or real) phones?