iPhone 3G won't send MMS (Picture Messages) anymore.

[flubberguard]

So I recently got a jailbroken iPhone 3G, and it was able to send picture messages before my dipsy self went and screwed it all up. I tried downloading a fake 4.3, and I later uninstalled it and put the 3.3 (7E18) back on it, but now it won't send picture messages, just emails. Should I just unjailbreak it? What should I do? Also, I'm not sure if it matters but I have T-Mobile, 5.11.07 modern firmware, and cydia.

 

[tortelliniguy]

Since you have tmobile, you need to make sure the APN settings to use MMS are correct.

Here's a guide from Tmobile.

1. From the main menu, tap Settings.
2. Tap General.
3. Tap Network.
   • Note: For iOS6, tap on Cellular.
4. Verify the following settings:
   • Data Roaming: On
   • Wi-Fi: Off
   • 3G Enable: Off
     • Note: The Apple® iPhone® is missing the WCDMA 1700/2100 band, and cannot function on the T-Mobile 3G network until the network reallocation has been completed. See: T-Mobile Steps Up “Bring your own iPhone” Efforts.
     • Note: Changing the 3G Enable function while the device is on an active call may cause the call to disconnect.
5. Tap Cellular Data Network.
6. Configure the internet settings under the Cellular Data section:
   • APN: epc.tmobile.com
     • Note: For some iPhone unlocks you may need to use wap.voicestream.com.
   • Username: <Leave Blank>
   • Password: <Leave Blank>
7. Configure the picture message settings under the MMS section:
   • APN: epc.tmobile.com
   • Username: <Leave Blank>
   • Password: <Leave Blank>
   • MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
   • MMS Proxy: 216.155.165.50:8080 (Leave Blank for 4S)
   • MMS Max Message Size: 1048576 (Leave Blank for 4S)
   • MMS UA Prof URL: http://www.apple.com/mms/uaprof.rdf
8. Press the Home button to save the APN and exit to the main screen.
9. Verify MMS is enabled:
   1. Tap Settings.
   2. Tap Messages.
   3. Set MMS Messaging to On