Video: Why can't you use a phone on an airplane
A one-minute video explores the belief that using phones on airplanes emits radio signals that interfere with flight control. Though using phones from high altitudes emits stronger signals to connect with signal towers on ground, installing 'Picocell', a mini cell tower on board, could combat the issue. Additionally, a study suggested that banning electronic use below 10,000 feet is "useless".