I'm not sure when or how, but my nephew Nathan learned how to call and text me. it may be one of the most adorable things I have ever seen. I have received calls at work, calls at night before bed, and random day calls.
As for texts, many are picture things that you can make on iPhone's, messages saying "I love you", a message that said don't be a weirdo, and a lot of emoticons. It is humorous how I get excited to see these messages and calls while others can be kinda bleh. What also amazes me is that a 6 year old knows how to pick up a phone to send a message and communicate. He is young and inexperienced, but when he knows what he wants to say, he picks up a phone and communicates it.
Many adults don't know how to do this. I have lost friends because they didn't know how to communicate. They didn't know how to send a text and say "hey, I thought of you today" or "I miss you", but instead, they let years go buy with nothing.
We can learn a lot from kids. If we teach our children right, maybe they will teach us something.
If this is being posted before 7pm, I'm a poser. I'm probably drinking tea.