My current cell phone has text messaging. I learned how to use it, but have only used it once in a practical way.

I was on a plane, on the runway, and it was announced that we would be delayed for half an hour taking off. I wanted to let my wife know that I would be late, but didn't want to annoy my seat mates (crowded flight, middle seat) by making a voice call. So I sent her a text messgae. Great idea right? Unfortunately my wife doesn't know how to read the text messages on her phone!