Set up Bluetooth DUN on Mac OS X

First you need to pair your computer with your phone:

1. On Mac go to System Preferences => Bluetooth, click "+" to add a new Bluetooth device.

2. Make sure your phone is discoverable and select it from the list. Use a secure code to pair with your phone. On the phone side and select "OK" to accept the pairing request. If you do not see a popup window on the phone side, simply pull down the notification list on Android. The Bluetooth pairing request should be in the list.

3. Once pairing is done, Mac OS X should prompt you to set up a mobile/dialup connection.

You can select "NULL Modem" from phone Vendor and enter "123" as the number. This will create a Bluetooth DUN network interface.

4. Before you can connect to the Internet, on Mac launch System Preferences->Network, make sure "Bluetooth DUN" is in the network interface list. If you do not see it, click "+" and add it. Again use "123" as the Telephone Number.

5. Click the "Connect" button and your Mac will be online instantly.

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That's it! You only need to setup once. For convenience you can also connect directly using the network icon on the menu bar.