I think that from a pure technical standpoint, you can't leave a MMS group any more than you can leave a reply-all email chain. "Leaving" a group usually just i

I think that from a pure technical standpoint, you can't leave a MMS group any more than you can leave a reply-all email chain. "Leaving" a group usually just involves your phone dropping any texts it gets directed to that group. (Obviously iMessage is different because it's not actually MMS)