So, I was on a plane the other day, connected to the WiFi and I received a text from a friend. I replied and he said he received it. I didn't think about it at the time, but later I realized, "Hey, he doesn't have an iPhone, he has an Android!" And sure enough, my messages to him are green and the text field says "Text Message," not iMessage. So how could that work? Did Apple come up with some new way to actually SMS over WiFi that I'm not aware of?