I am beyond frustrated. My boyfriend is on the AT&T network and has an iPhone 5. We never had issues before but over the past week we have discovered that he is not receiving my picture messages (only any text attached). I am also not receiving his. Anyone else we are both receiving/sending fine. I do not know anyone else on AT&T though so not sure if that is the issue. Is there a known problem with MMS messaging from Verizon to AT&T?