Upon entering an airplane, the flight attendants will often caution passengers against using any electronic devices during the course of the flight.

This, naturally, includes cell phones, pagers (does anyone even use pagers anymore?!) and laptops—all of which are capable of broadcasting wireless signals that interfere with the plane’s electronics and could lead to your untimely demise.

To combat this danger, electronics manufacturers long ago figured out that their products should include an airplane-safe mode. And so, “airplane” mode, an option that disables cellular signals, radio waves and Wi-Fi, became standardized.

The iPhone, of course, has it, but apparently, if you fly ATA airlines, they will still attempt to arrest you regardless if you use the option or not.

The Consumerist reports:

The iPhone has a setting that makes it safe to use on an airplane. So-called "airplane mode" disables cell phone, radio, Wi-Fi, and Bluetooth signals, thus allowing you to watch movies staring Jennifer Love Hewitt while flying through the air.

And that's what reader Casey tried to do. Unfortunately, it seems that the flight attendants had never heard of "airplane mode," and called the police when Casey refused to stop watching I Know What You Did Last Summer.

Lesson learned: iPhones are dangerous.

Thank God, I’m getting rid of mine…