The iPhone is Apple's popular smart phone. The "Airplane Mode" function turns off all wireless functionality so that you can use the device while traveling in the air. Airplane Mode disables all Wi-Fi, bluetooth and phone signals. While in Airplane Mode, no phone calls can be made or received and no data can be sent or received. Removing an iPhone from Airplane Mode upon landing is simple. The feature is toggled on and off via a simple switch in the device's Settings.