Help! My husband and I both just recently got the Galaxy S5 Active, and the group text feature seems to be non-existent. I send a text message to three friends. When each of them replies to my text, it goes into a separate, individual text string. WHY will those responses not go back into my original group text??? Someone please help, before I go back to the iPhone.... And FYI, I do NOT have an 'Enable Group Texting' feature under Settings-Messages-Multimedia Messages, which apparently owners of the regular S5 (not the Active) have. Thanks in advance for any assistance you can provide!