deleting one text in a conversation without wiping the whole thread

iphone: press and hold the message, tap More, it'll be ticked, then hit the bin icon bottom left. only that one goes. google messages on android is the same idea - long press it and tap the delete icon at the top. just know it only deletes it from your phone. the other person still has it, unless it was an iMessage and you use Undo Send within a couple of minutes.