Why Airplane Mode Exists on Flights
Airplane mode disables wireless transmissions that could interfere with aircraft systems. It turns off cellular, Wi‑Fi, and Bluetooth radio signals, reducing the risk of noise or confusion in cockpit communications and navigation equipment.
What Happens If You Skip Airplane Mode
Without airplane mode, phones and tablets can repeatedly search for ground towers, causing signal spikes and possible interference. Crews may ask you to enable it, and in some regions ignoring the rule can lead to fines or restricted device use.
How to Use Devices Safely in the Air
Enable airplane mode before takeoff, then turn on Wi‑Fi or Bluetooth only if the airline permits it. For details on regulations and airline policies, see the Federal Aviation Administration guidance on portable electronic devices.
