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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 messages or make calls. Follow these instructions to turn flight mode on or off.
Turn flight mode on or off
Press the Menu key twice.
Scroll to Manage Connections and press the Navigation key.
Scroll to Mobile Network and press the Navigation key to turn flight mode on or off.
When the box next to the menu item is empty, flight mode is turned on.
Press the Return key to return to standby mode.