When you fly on an airplane these days, you more than likely have access to Wi-Fi. That means you can peruse Facebook, catch up on the latest trending topics on Twitter, feel bad about yourself after two minutes on Pinterest, and even stream music and movies (on certain airlines).

With such impressive in-flight technology improvements, why are cell phones still limited to airplane mode only?

Phone signals can—and do—interfere with the radio frequency. It doesn’t happen often, and when it does, it’s brief. Still, when pilots and air traffic control are trying to communicate vital information, even a split second of confusion is too risky.