AT&T has officially announced MMS for the iPhone on September 25th 2009. But for the daring and ambitious few who want it now, you may be in luck. Using this tutorial will enable MMS, the camera icon in the Messaging app, and access to the Cellular Data settings for the iPhone.

Here are the requirements:

an iPhone 3G or 3GS running firmware version 3.1

iTunes 8.2 or 9

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Here’s what you do:

Mac OS X

1. Close iTunes if it is open
2. Start Terminal (Applications > Utilities)
3. Run the following command: defaults write com.apple.iTunes carrier-testing -bool TRUE

Windows 2000/XP/Vista (32-bit):

1. Go to Start -> Run (
2. type in “command” and hit enter
3. Type/copy+paste this into the command console that comes up: “C:\Program Files\iTunes\iTunes.exe” /setPrefInt carrier-testing 1
4. Hit enter

Windows XP/Vista (64-bit):

1. Go to Start -> Run
2. type in “command” and hit enter
3. Type/copy+paste this into the command console that comes up: “C:\Program Files (x86)\iTunes\iTunes.exe” /setPrefInt carrier-testing 1
4. Hit enter

Download the modified bundle right (right-click and “Save as” or whatever your browser’s equivalent is). To install this, follow these steps.

1. Download the file to some location on your computer
2. Plug in your iPhone
3. Start iTunes
4. Click on your iPhone in the device listing in iTunes
5. Alt-Click the “Update” button (Shift-click in Windows)
6. Browse to where you saved the IPCC you downloaded
7. Select this file and click Choose (or OK on windows i think)
8. Reboot your iPhone

You may get an error if you’re a part of the unlucky group. This is because it depends on your account– AT&T’s ongoing process of removing the opt-out codes.

Everyone will eventually be given access, just keep trying or wait for September 25th.

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