I'm having some issues getting mms to work on my phone. I downloaded a carrier file so I would have the option of sending mms messages. I then borrow my Dad's non-iphone and put my sim card in it and made a phone call. Then when I checked my phones on my online account it showed that I had his phone now. So it gave me the option of selecting a non-iphone texting plan which I did. Then I sent a picture message from his phone and it worked. After that I put my sim card back in my iphone and sent another picture message and it worked again. So then my friend who has a 2g iphone wanted to do the same thing with his phone. We did the same thing to his phone and it worked. But when I tried sending him a test picture message it gave me an error. He could still send picture messages but I couldn't any more. Could it having something to do with him using the same non-iphone to do this?