I covered in a 2 part series the new MMS and tethering capabilities built into iPhone 3.0. You can find them here:
iPhone 3.0 MMS & Tethering: Part 1
iPhone 3.0 MMS & Tethering: Part 2
In this article I wanted to get more specific and focus on my experience tethering my 3.0 enabled iPhone 3G (note not the 3G S) with my recently purchased iMac (running OS 10 Leopard).
First thing I had to do was turn on Bluetooth on the iPhone. I normally don’t deal with Bluetooth devices so I leave the radio off. Plus it’s a good idea to save on battery life by turning it off. The iMac (which wonderfully has Bluetooth available) wasn’t listed on the devices list, even after I made it discoverable (the iMac that is).
I decided then to go through the device setup wizard available through the Bluetooth configuration icon in the status bar.

On the second page of the wizard there was an option for “Mobile Phone”. I chose that to proceed.
A search page then appeared as it tried to locate (from 2 feet away mind you) my iPhone. It took a moment but it showed up and I was able to select the device to continue. The iMac said that it needed to gather some bits of data about my device (no idea what) but after that I had a code popup on my iPhone which matched a code appearing the iMac screen.
The popup display on the iPhone indicated that a paring was occurring and I had to click OK to permit this. I did. However the pairing came up unsuccessful.
I tried a couple combinations of turning off Bluetooth and back on, switching the discover mode on the iMac to restarting the wizard but I wasn’t having much luck.
I eventually stumbled on the solution (no stopping for directions for this guy!). I had to be on the Bluetooth settings page on the iPhone with it scanning for devices. I then let the wizard attempt to pair with the phone. When the wizard came up with the code, I clicked the OK to permit prompt on the iPhone and then went back to the wizard to click continue.
Success! I could then setup a network connection through the iPhone.
In the Bluetooth settings page (use the Open Bluetooth Preferences from the status bar icon) you will see your paired device and details about it:

All you have to do is click the device and connect! (click the little settings cog wheel next to the minus sign).
So really this is a simple process, and a wireless one at that, much better solution that having to carry around a dock connector.
I did a few connection speed tests to measure the performance (excuse my lousy net speed!)

This is my broadband DSL connection (above)

And here is the tethered test.
About 100 kb/s off on the download, but significantly bad on the download. That is OK with me, since if I was using my iPhone for net access, I would likely really only care about the download speed.
This post originally appeared on DavidRStorms.com on August 10th, 2009

On my last 



