You will remember those clumsy airplane phones in the back of the center seat which, for a hefty price, could let you reach out and touch someone from 30,000 feet. What you get these days is an announcement about turning off all your battery-powered stuff until you reach altitude. And don’t even think about making a call. The tide, however, could be shifting. The new Boeing 747-8 Dreamliner, now in production, could let people use their cell phones as soon as next year, although at the moment FAA rules won’t allow this over U.S. airspace. So there is First Class, Business Class, and here an idea: Quiet Class.