By Rick Richardson
You hear the warning every time you fly: Please set all devices to airplane mode. But what happens if you don't?
It’s not that long ago that airlines stopped telling passengers to keep their mobile phones, tablets, e-readers and other devices turned off throughout the flight.
Why airplane mode?
We’re asked to turn our devices off or to put them in airplane mode because of electromagnetic interference from phones, tablets, e-readers, electronic headsets and more. Because some planes were built before these became a thing, it took a while for the industry to make sure it was entirely safe to use them.