The ban on mobile devices has been in effect since the early 1990s, when cellphones began to crop up, and the FAA and airlines summarily freaked the hell out for no good reason. Despite no direct evidence that the use of mobile phones or other electronic devices would interfere with the plane’s systems, the ban continued — even after the FAA hired an outside safety agency to find if anything could go wrong. They didn’t. But the FAA and airlines decided to continue the policy. Until today.