Every day on the iPhone you have to work with text, write emails or notes, correspond in messengers more and more often. The simplest and most pleasant way to undo the last action has existed since the first versions of iOS.
To cancel the last action, just shake your iPhone and select the appropriate item in the dialog box. In the same way, you can repeat the last or canceled action.
This gesture allows you to undo input, paste, delete, or other action in the system. The gesture is activated and deactivated via “Settings” → “Universal access” → “Touch” → “Shake to undo”.
You can also use the triple swipe to cancel the last action. Just swipe three fingers to the left on the input area to cancel the last action.
This trick will work in most standard and many third-party applications. Reverse operation – repeat the last action is carried out with a similar gesture to the other side.