I would appreciate this getting stickied. Please Register or Log in to view images Here's the video tutorial I made, which follows these exact instructions. http://www.youtube.com/watch?v=ourNVkb1Xik If you are unsure about this process, please check the FAQ at the end of this post before you begin! Step 1: Folks at BenM.at have hosted several iPhone tethering configuration files for many carriers across several countries. You need to go to the following link http://help.benm.at/help.php using iPhone's Safari browser. Please Register or Log in to view images Step 2: Then click on Mobileconfigs on that page: Please Register or Log in to view images Step 3: Select your country from the list. Please Register or Log in to view images Step 4: Once you have selected the country, you will be prompted to select the provider. Please Register or Log in to view images Step 5: Tap on the Install button. Please Register or Log in to view images Step 6: Then tap on the Install Now button. Please Register or Log in to view images Step 7: Tap on the Done button. Please Register or Log in to view images Step 8: Finally, go to Settings -> General -> Network -> Internet Tethering and tap on the toggle button to enable tethering. Please Register or Log in to view images That's all, it is as easy as that and no hacking required, can you believe it and the best part is it's free. But the way this hack has spread, I won't be surprised if AT&T clamps down on it soon so enjoy it till it works. Please note that this is a hack so proceed with caution. Source: Link Here's the results, this is my iPhone running tethering! Please Register or Log in to view images Frequently Asked Questions. No, internet tethering is taking the data that your iPhone receives over the 3G network and "forwarding" it, if you will, through the USB cable. AT&T would have no way of knowing that you do this, unless if they physically are monitoring how your data is being used on your device, which is an invasion of privacy and therefore illegal. No. I would highly recommend you have an unlimited data plan before beginning to use tethering, because you are now loading more info onto your computer than the iPhone can handle. If you think about it, iPhone cannot support flash. So flash advertisements now have to be loaded over the 3G network on sites that you used to visit on your iPhone. Also, the iPhone has mobile website support, which takes less data than full-version websites. Some websites that you would visit on your iPhone in the mobile version would load now on your computer in full-version, requiring more data transfer over the 3G. Therefore, I recommend you have an unlimited data plan if you are going to be using internet tethering regularly. Yes. In theory, if you uninstall the profile it should remove tethering. However, this is not what I have experienced. You may need to restore your iPhone to remove the feature completely. No. Internet tethering is already built into the iPhone. This little trick just unlocks it. It's exactly like the Emoji that you easily unlocked with some free app in the Appstore. The support is built in, but by default (due to the location in the world of the iPhone) it is disabled. It is not any worse than jailbreaking, and that doesn't do anything to your phone considering all you do to get rid of that is restore. Yes. I don't have a Mac, but there is a confirmation on the YouTube video that a user got it to work with Mac.