Everyone knows ‘that guy’. Mr. loud cell phone talker. You’ve heard him on the street, in the bus, and at the restaurant. But as early as next year, you may be hearing him on the airplane. Airlines are preparing for mobile phone use in flight. ‘Overhead “no smoking” signs will be replaced by “no mobiles” messages on some planes next year when technology is introduced to make it safe for passengers to use mobile phones mid-flight.‘ If you thought being able to take no liquids on the plane was annoying, just brace yourself…’that guy’ may be coming to an airplane near you.