Airplane Mode is a setting on mobile devices that disables all wireless communication functions. This includes cellular networks, Wi-Fi, and Bluetooth. It is primarily used during flights to prevent interference with an aircraft's navigation and communication systems. When activated, users can still access offline features and applications. While in Airplane Mode, users can manually turn on Wi-Fi or Bluetooth if needed, allowing for limited connectivity. This mode is also useful in conserving battery life, as it stops the device from searching for signals. Overall, it provides a simple way to manage connectivity while ensuring safety during flights.