In many countries, you are required by law to turn off the phone while on board an aircraft. A way to turn off the phone function is to switch your phone to Airplane mode.
When you enable Airplane mode, all wireless radios on your phone are turned off, including the call function, data services, Bluetooth, and Wi-Fi.
When you disable Airplane mode, the call function is turned back on and the previous state of Bluetooth and Wi-Fi is restored.
To turn Airplane mode on or off, press and hold Airplane mode.
, and then tap
When enabled, the Airplane mode icon
is displayed in the status bar.