I am baffled at the lack of cell phone etiquette exhibited by some people. It's unbelievable. Otherwise normal people really disappoint me sometimes. The worst is when I am dining out with someone and they answer their phone. Their message to me is: you just sit there quietly while I have a loud conversation with someone that is more important than you. My new policy is to tell them, right before they answer, that they have one minute before I leave. I know, it sounds snotty, but I can't help it. They should know better.
Anyway, just read these etiquette tips from AT&T, which are just common sense people! I'm waiting for the backlash: just because you *can* be connected 24x7 doesn't mean you should. The trade-off for being connected is that you are frequently and notably, very, very annoying.