I love to hear the kids pretend to talk on the phone. Vanessa doesn't do it as often now, but sometimes Zane's interest pulls her back.
Zane often carries an old cell phone in his pocket. The other day he was "texting" and I noticed him turn to his imaginary companion to tell him or her that he was almost finished sending Mom (me) a text about what we were going to do, "Wait just a second. I'm almost done."
I find that he talks and texts on the phone more while in the backseat alone, when he thinks no one is paying attention. I love to sneak a listen and/or peek. I learn so much about him in those moments.