Multiple choice What can happen in Facebook Messenger? If you hold the "thumbs up" icon, it gets larger There is an Avengers set of icons in a "hidden" tab Hold an emoji for 30 seconds and it becomes the background Text box shape change on device (iOS has rounded corners) Reveal answer Fill a bubble to check yourself A Correct answer Explanation In Facebook Messenger, holding down the thumbs up icon allows the user to send a larger version of the emoji.