A friend and I say goodnight via text every night. ALL texts prior to the goodnight one arrive normally. Recently, the goodnight text, which is somewhat longer than the others, does not get delivered. The text immediately before that one, no problem. Then we'll ask each other if they got the goodnight text, and we didn't, so the text immediately after the goodnight message got delivered, along with subsequent ones. The only way the goodnight text differs is that it is longer (maybe 15 or so lines of text) and it contains emojis. We both use a Samsung Galaxy SM-G920V.