Shake to Undo on iPhone 7 Plus

While composing text, messages, or editing photos, shake your iPhone to revert to the previous action, and shake again to redo.

To enable the Shake to Undo feature on iPhone 7 Plus, follow these steps:

First, go to 'Settings'.

Next, choose 'General Settings'.

Access the Accessibility menu.

Here, locate 'Shake to Undo'.

Wishing you all the best.