Manners, manners, manners. it really boils down to consideration of others, using good judgement and polite manners in any situation. I have observed friends and others talk on cell phones publicly (and in restaurants) for a lot of years. I have never understood this and I never will. Texting and iphone use in a restaurant is just as bad if not worse, imo.
I was told that at a NYE celebration/dinner at a nice local restaurant, there were many iphones out on the tables - some being used occasionally, and some being checked and used quietly at regular intervals (email, texts) regularly. etc. sounds like a personal habit with the new technology. whattayagoing to do? you can't tell people not to quietly use their stuff, but it doesn't exactly seem appropriate for the situation.
oh well! we can only control our own manners! we can also frequent restaurants with cell phone policies.