Apple's mobile phone always prompts when texting or typing. What should I do?

The prompt "Undo is typing" appears on the iphone, because accidentally shaking the phone often causes all the typed words to be suddenly undone.

The way to undo typing when the iphone is turned off is as follows:

1. Click to enter Settings-General-Auxiliary Functions.

2. On the Accessibility page, find the shake you want to undo.

3. After turning off the shake cancel option, there will be no cancellation reminder. After turning off the shake cancel option, there will be no cancellation reminder.