So the flight attendant doesn't yell at you
What is Airplane Mode on a Cell Phone?
If you've ever traveled on a plane, you've probably heard that you should put your portable electronic devices into airplane mode or game mode.
This is because most major airlines prohibit the use of wireless communications while the aircraft is in flight, as this can cause interference that can cause radios or other equipment on the aircraft to malfunction.
However, this is not the only reason not to use mobile devices on the plane. Sometimes, using such devices can be distracting for other passengers on the same flight, as not everyone wants someone talking or typing on their gadget next to them, especially when they are trying to sleep.