I'm taking a nap.
I'm out with my friends.
LOUD ALARM CLOCK NOISE!!!!!!
Oh wait, that's my phone. How is this convenient again? Well, it is convenient to be able to make calls wherever you are. But rarely to receive them.
How often does your phone ring when you think, "Yea! I've been looking to be interrupted!"? No, much more likely, you go, "Ugh, I'm not walking the 10 ft. over to the table to see who it is."
That's why I like the idea of texting to set up a phone call, but my friends still think that's weird. It may be weird, but I bet it's the future.