So I just recently bought the Samsung Galaxy s3 i747 for AT&T and it won't send or receive mms messages. I have the data package enabled and still nothing just sits there and continualy says sending but nothing. WiFi works fine so does regular txt messages. I did bring it in to AT&T recently and they told me they can't do anything because their 4g doesn't do mms unless ur connected to the internet....wtf...mine still won't send even when connected to the internet. Does anyone know how to fix this issue?? Please help!!! Thanks.