SelfElevated2
Android Expert
Ok this is a fix for not being able to send or receive MMS messages on sprint ROMs. It takes about 2 mins on AOSP ROMs..
***some people have said it worked for them when they flashes this first... I've personally never had to flash this for it to work for me. But here it is in case that's the case. You can flash it first or try it without this which always works for me*** but this zip alone will not fix it. Do the rest!
http://forum.xda-developers.com/showthread.php?t=1758735
Here is what you need to do if your on AOSP, AOKP, CM, PA
This will take you about 2 mins without even rebooting or going into recovery
1st open voice dialer and say open APN. Now skip to step 3!!!
Or download this app I use and continue to step 2 go download this from the market
https://play.google.com/store/apps/details?id=com.google.android.apps.gesturesearch
2nd. Open app let it set itself up. Draw APN
Click on the apns setting
3rd. Now click the 3rd one that has internet at the end..
4th. Now scroll down and change your mmsc URL and MMS proxy to match mine.. Yours will say sprintpcs.com instead of myboostmobile.com
And your Proxy will end with 7 instead of 1.
5th. After changing those 2 things hit menu then save apns..
Now your MMS will work!!!!
This method will work on all sprint aosp roms
***some people have said it worked for them when they flashes this first... I've personally never had to flash this for it to work for me. But here it is in case that's the case. You can flash it first or try it without this which always works for me*** but this zip alone will not fix it. Do the rest!

http://forum.xda-developers.com/showthread.php?t=1758735
Here is what you need to do if your on AOSP, AOKP, CM, PA
This will take you about 2 mins without even rebooting or going into recovery
1st open voice dialer and say open APN. Now skip to step 3!!!
Or download this app I use and continue to step 2 go download this from the market
https://play.google.com/store/apps/details?id=com.google.android.apps.gesturesearch
2nd. Open app let it set itself up. Draw APN
Click on the apns setting
3rd. Now click the 3rd one that has internet at the end..
4th. Now scroll down and change your mmsc URL and MMS proxy to match mine.. Yours will say sprintpcs.com instead of myboostmobile.com
And your Proxy will end with 7 instead of 1.
5th. After changing those 2 things hit menu then save apns..
Now your MMS will work!!!!
This method will work on all sprint aosp roms