I answered my phone and my friend's 22-month-old son said, "Hiiii!" and started babbling about his favorite cartoon. I laughed and played along, thinking my friend had dialed and was letting him talk. Then I heard her say in the background, "Did you find Mommy's phone, Charlie?" Turns out he'd unlocked her iPhone, hit redial, and thought it was perfectly natural when he got an answer! He's a tiny technical genius and IMMD.