iPhone and iPad

How To Set Up An iPhone DUN Internet Connection

Jeffry Thurana 13-07-2010

iphone DUNWith the dawn of the internet, computers and modern telecommunication technology, the term “working” has shifted from what it was several years ago. Nowadays, working is not always identical with sitting in a physical office from 9 to 5. Any place can serve as a virtual office. All you need is a mobile computer and a good internet connection.


WiFi hotspots have become common hang out places and we can find these spots almost everywhere, from the big international airports to your friendly neighborhood coffee shops. But they are not really everywhere and they can’t follow you anywhere you go.

There are times when you are on the road and nowhere near WiFi spots but you still need an internet connection. These are ideal times to use the internet connection provided by your mobile phone provider using your phone as a modem How To Use Your GPRS Cell Phone As A Modem Read More .

The process is known as wireless DUN (Dial Up Networking) – or tethering, utilizing Bluetooth What Is Bluetooth? 10 Common Questions, Asked and Answered What is Bluetooth and how does it work? We take a look at Bluetooth, why it's so useful, and how to use it. Read More to connect the gadgets. And if you use an iPhone, the iPhone DUN set up process is very easy.

On The iPhone Side

There are two steps needed to set up an iPhone DUN internet connection: on the iPhone side and on the computer side. Let’s start with the first one.

  • Open your iPhone “Settings” and go to the “Internet Tethering” option. It’s buried a little deep inside “Settings – General – Network – Internet Tethering“. This setting is off by default.

iphone bluetooth dun enable

  • If you switch the tethering on, your iPhone will ask you to turn on your phone’s Bluetooth connection (if it isn’t already on). If you choose not to turn it on, the tethering will only be available if you connect your iPhone to your computer using a USB cable.

iphone DUN

And that’s all that you need to do on the iPhone side. Now let’s move onto the next step.

On The Mac Side

If you use a Mac, here are the steps that you need to take to use your iPhone as a modem.  Windows users, don’t worry.  We will come onto the Windows method shortly.

  • Click on the Bluetooth service icon on the menubar and choose “Set Up Bluetooth Device“.

iphone bluetooth dun enable

  • Bluetooth Setup Assistant window will now open. Choose your iPhone from the list of available devices and click “Continue“.

iphone bluetooth dun enable

  • Then the pairing process will start. Your computer will create a set of random numbers for the passkey. Enter the exact number on your iPhone to pair the two devices.

iphone bluetooth dun protocal

  • After they are paired, your iPhone will appear on the list of available devices. To start the internet connection via your iPhone, click on it and choose “Connect to Network

iphone bluetooth dun protocal

On The Windows Side

For Windows users, here are the steps needed.

  • Open Control Panel, search for Bluetooth, then click “Add Bluetooth device“.

iphone bluetooth dun protocal

  • Windows will try to search for available Bluetooth devices. Choose your iPhone from the list and click “Next“.


  • The process will continue with the device pairing. Similar to the one on Mac computers, you will also get some random generated passkey number that you need to input on your iPhone.


  • After both devices are paired, go back to Control Panel and choose “View devices and printer” to open the devices window. Find your iPhone there, right click on it and choose “Connect using – Access point“.


  • Your Windows computer is now connected to the net. You can see the indicator which appears on the system tray.


  • To disconnect your computer from the net, right click again on your iPhone icon in the device list and choose “Disconnect from device network“.

iphone DUN

To Tether Or Not To Tether, That’s The Question

I have to apologize to Linux users for not including the OS here. The reason is I currently don’t have access to a Linux machine. But the basic process should be the same: pair your iPhone with your machine, and connect to the net using your iPhone as a modem.  If the process differs in any way, please do let us know in the comments.

But please note that due to financial reasons, tethering (using an iPhone or any other mobile phone) is not for everybody. You have to check whether your cell network subscription includes internet data, and if it does, how much is it? Some cellular networks impose crazy price tags for their internet connection. Make sure that your wallet won’t burn at the end of the month before you try this method.

Another thing that I have to point out is even though I’ve tried the method successfully (using the iPhone 3GS under iOS4, Mac with Snow Leopard and a Windows machine under Windows 7), the steps might be slightly different and the results might vary if you use different combinations of hardwares and softwares.

If everything goes smoothly, you don’t have to worry about an internet connection anymore. Between your home connection, the hot spots and your office’s internet connection, you will have your iPhone’s DUN Internet connection to cover you when you are on the road.

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  1. PAN pro
    February 28, 2017 at 5:53 pm

    This is NOT DUN (dial up networking).. this feature you are using is called bluetooth PAN (personal area network) aka bluetooth pan tethering... dun & pan are both tethering options but dial into the network differently..

    The title is mis-leading

  2. Anonymous
    April 14, 2015 at 5:08 pm

    I cannot even See the network you are talking about

  3. Bravo 25
    August 21, 2010 at 9:17 am

    I agree this is NOT dial up networking it's plain old tethering. 'Dial-Up' is half the clue. Nothing is dialled the connection is already established. Misleading, dissapointed

  4. Sam
    July 21, 2010 at 4:59 pm

    This is not DUN - it uses the PAN profile on the iphone.

  5. Birkenstock
    July 17, 2010 at 10:42 am

    o, I cannot operate it.

  6. ForestFire0
    July 14, 2010 at 5:04 am

    I have an iPhone 4, but I do not pay the extra $15 a month for a tethering plan. I've seen this in the iPhone settings already, but I had no interest in racking up a huge bill by enabling and finding out that means I signed up for the most expensive data plan. Can someone confirm that I need the plan that already includes tethering to do this? I don't want to try it myself, for the already enumerated reasons.

    • Anonymous
      July 15, 2010 at 11:44 pm

      It depends on which cell operator you are subscribing to. Mine just practically unlock the door and let us do what we please :). But yes, some operators require you to pay extra for the feature.

  7. Anonymous
    July 13, 2010 at 7:38 pm

    Well, it depends on the speed of your cell provider network. In good condition, I could get 3G speed from my provider and the download speed is up to around 50-60 KB/s.

  8. nm
    July 13, 2010 at 7:31 pm

    Is this an official feature of OS4? Or is this a jailbroken iPhone? I used to be able to tether before upgrading back when 3.1.2 came out, but since then it hasn't worked for me.

    • Anonymous
      July 15, 2010 at 11:39 pm

      No, it's not jailbroken iPhone. I'm using 3Gs and official iOS4; and as far as I know, this feature is available since iOS 3. But there are some carriers which disable tethering unless you upgrade your subscription. (Even though the workaround is just a search engine away).

  9. David Levine
    July 13, 2010 at 6:51 pm

    I do not have tethering as part of my cell phone plan, but I'm curious as to what kind of speed you get by accessing the Internet this way.