So I just got the iPhone 4 and my friends are trying to send me pics through texts and my phone doesnt even recognize a pic has been sent to me. I can send pic out but not get them and yes I have MMS Messaging ON.
that happened to me but i didnt realize it until i found out the jailbreak took away my MMS capabilities, is your iphone jailbroken as of now? if not then follow deciphermedia intsructions.. worst case scenario is doing reset settings or restore.