Just a quick note about texting (which I rarely do).
In some places in Wyoming it is possible to get a text message out and not be able to get a call out from the same phone.
So the phone stays off, in the pack, forgotten unless someone is seriously injured. In a situation like that, I'm a big fan of technology.
Otherwise, I agree with the ball and chain comments some have made -- we are sometimes TOO connected these days. I go into the woods (to hunt, to fish, to climb, whatever) to get away from things, not to take them with me.