What is the real purpose of the “Airplane Mode” on our phones?

Although it has never been proven that mobile phone signal interferes with airplane navigation, the belief is widespread. What’s the truth about the “Airplane Mode”, though?

Ever wonder why stewardesses ask you to put your phone on "Airplane Mode" on flights? Some claim that it's because active cell phones could interfere with the plane's navigation equipment.

– It's never been proven that a mobile phone signal has interfered with the navigation performance of the aircraft. But just because it's never happened doesn't mean it will never happen – a pilot tells Business Insider.

However, the real reason has to do with radio interference with cell phone networks on the ground. Active cell phones in airplanes would be picking up service from multiple cell towers on the ground. This could crowd the networks on the ground and disrupt service.

Still, some international airlines have cell phone receivers installed on select planes, so passengers on certain flights can call or text in the air. You can also connect to Wi-Fi on a lot of domestic flights, so you can surf the web and send messages, Business Insider reports.

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