If you have an Android phone, there’s a good chance you’ve heard of the Delete button. It’s a handy little function that lets you erase any text messages that have been sent to or from your account. But what if you don’t want to delete the messages? What if you just want to forget they ever happened? That’s where the “undo” button comes in. To use the “undo” button, first open up your messaging app and tap on the three lines in the top left corner. This will show a list of all of your messages, including those that have been sent and received since you last used this function. Next, tap on one of the messages in this list and then press and hold on it for a few seconds. This will cause a small box to appear at the bottom of your screen that will say “Undo.” Once it says “Undo,” drag it up so that it is next to the “Delete” button. Now press and hold on both buttons until they turn blue (it should take about two seconds).