HowTo: MMS on an AT&T iPhone 3G/3GS with OS X

Ben Miller

This tutorial shows you how to enable MMS on an AT&T iPhone 3G/3GS with OS X:

Requirements:

HowTo:

  1. Close iTunes
  2. Save the AT&T Carrier Settings File on your Desktop
  3. Open the „terminal.app“ on your Mac which you can find in Applications/Utilities
  4. Copy/Paste into the terminal.app the following command:defaults write com.apple.iTunes carrier-testing -bool TRUE
  5. Close terminal
  6. Open iTunes
  7. Plug your iPhone into your Mac
  8. Select your iPhone inside iTunes in the sidebar
  9. Press and keep the Option-Key hold while clicking on „Check for Update“
  10. Now select the AT&T Carrier Settings File on your Desktop and hit „Choose“
  11. Let iTunes install the AT&T Carrier Settings File
  12. After installing unplug your iPhone and restart your iPhone
  13. After the restart open the „Settings.app“ on your iPhone and go to „General > Network > Cellular Data Network“
  14. Now enter the following settings
    1. APN: wap.cingular
    2. Username: wap@cingulargprs.com
    3. Password: CINGULAR1 (case sensitive)
    4. MMSC: http://mmsc.cingular.com
    5. MMS Proxy: 66.209.11.32
  15. Press the Homebutton
  16. Reopen your Settings.app and go to „Messages“ and enable MMS Messaging
  17. Press the Homebutton again and its done! Sending MMS should be working right now!

This guide only works if AT&T has already updated the cellular towers in your area.

 

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