S4 mini through AT&T; Why can't I download group mms?

A

AC Question

Used to have an iPhone, iMessage disabled--this is not the problem!

I usually receive the first message in a group message, it automatically downloads whether it is a photo or simple text; I am able to reply, however after that I cannot download any further messages in the group thread. The mms comes from the individual rather than in the group and the download fails. I have mobile data turned on; have tried with wifi on and off. My group message box is checked in the message settings. What is wrong?? What else can I try to solve the issue?