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In flight mode the connection to your network is turned off, so your phone can’t cause any interference with sensitive equipment in a plane or a hospital. You can still use your phone when flight mode is turned on, but you can’t send text messages or make calls. Follow these instructions to turn flight mode on or off.
Turn flight mode on or off
Scroll to Flight mode and press the Navigation key.
Highlight a profile other than Flight mode (except Headset or Bluetooth) and press the Navigation key.