So these aren't always easy to find so in case anyone needs them here are my (working) data settings for using Straight Talk on an iPhone:
You'll need TetherMe or an APN Editor from Cydia (If you use tetherMe turn off Auto APN in settings)
Navigate to Settings - General - Network - Network settings
Cellular Data:
APN: att.mvno
Username: (leave blank)
Password: (leave blank)
Visual Voice Mail: (Does not work so it can say whatever)
MMS:
APN: att.mvno
Username: (leave blank)
Password: (leave blank)
MMSC:http://www.mmsc.cingular.com
MMS Proxy: proxy.mvno.tracfone.com:80
MMS Max Message Size: 1048576
MMS UA Prof URL: (leave blank)
Restart if you'd like or toggle airplane mode, there you go. Working Data/MMS on your iphone with Straight Talk.
_____________________________________________________________
-- ALTERNATIVE -- On 4.3.3 and below
Download and unzip attached .ipcc file
Open Cydia. Add the repo: http://cydia.d23.com.uy/
Install Comm Center Patch.
Restart phone
Connect to and open iTunes
Hold shift and click "Check for update"
Browse to unzipped ipcc and select it
iTunes will update your carrier settings. Banner and Carrier in "About" section in settings should say "Straight Talk" and data settings will be set correctly
You'll need TetherMe or an APN Editor from Cydia (If you use tetherMe turn off Auto APN in settings)
Navigate to Settings - General - Network - Network settings
Cellular Data:
APN: att.mvno
Username: (leave blank)
Password: (leave blank)
Visual Voice Mail: (Does not work so it can say whatever)
MMS:
APN: att.mvno
Username: (leave blank)
Password: (leave blank)
MMSC:http://www.mmsc.cingular.com
MMS Proxy: proxy.mvno.tracfone.com:80
MMS Max Message Size: 1048576
MMS UA Prof URL: (leave blank)
Restart if you'd like or toggle airplane mode, there you go. Working Data/MMS on your iphone with Straight Talk.
_____________________________________________________________
-- ALTERNATIVE -- On 4.3.3 and below
Download and unzip attached .ipcc file
Open Cydia. Add the repo: http://cydia.d23.com.uy/
Install Comm Center Patch.
Restart phone
Connect to and open iTunes
Hold shift and click "Check for update"
Browse to unzipped ipcc and select it
iTunes will update your carrier settings. Banner and Carrier in "About" section in settings should say "Straight Talk" and data settings will be set correctly