"No cell phone" signs in planes.

The no smoking sign in airplanes is pretty much out of date. Most, if not all airlines have prohibited smoking in their planes. This article claims that soon the "no smoking" signs will be replaced by "no cell phone" signs. You would think why, because on a 36,000 feet cruise levels, chances are that cell phones won't work. Well, that will change. Manufacturers of airplanes like Boeing and Airbus have plans to launch their broadband wireless services in which using cell phones during flight will be made possible. To avoid cell phones making contact with ground services, the use of cell phones during landing and take off will be prohibited.