And when you delete messages on your side of the conversation, the app on the other side of the secret chat will be ordered to delete them as well.</p> <p>You can order your messages, photos, videos and files to <a href="#q-how-do-self-destructing-messages-work">self-destruct</a> in a set amount of time after they have been read or opened by the recipient. The message will then disappear from both your and your friend's devices.</p> <p>