Do you have a problem with your Apple iPhone constantly displaying a popup that wants to undo your text editing? It may happen often in a moving vehicle. This is usually caused by the “Shake to Undo” setting. Change it with these steps.
- Open “Settings” from the Home screen.
- Seect “General” > “Accessibility“.
- Scroll down and set “Shake to Undo” to “Off” to prevent the “Undo” popup.