OS X Mountain Lion: Turn off Wi-Fi
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If you have a Wi-Fi installed, turn it off when you’re in situations where radio communication may be prohibited, such as in an airplane or at a hospital.
- Choose Apple menu > System Preferences, and then click Network.
- Select AirPort in the list, and then click Turn AirPort Off.
If you disabled the AirPort service in Network preferences, then your Wi-Fi card is already turned off.
You can also use the AirPort status icon in the menu bar to turn Wi-Fi off. Select “Show AirPort status in the menu bar” in the AirPort pane of Network preferences.
Last Modified: Sep 4, 2015