I'm not sure if anyone else has had this issue but I have a group thread with two other individuals who have iPhones. This had always been an all iMessage thread until the last couple weeks where for some reason, one of the guys txts consistently come thru only as "text messages" and not as iMessages. I'm not sure why this is happening because individual txts from this same person come thru as iMessage. Just on this group thread it doesn't. Any ideas?