Why is Apple notified by mobile phone several times?

This is because the mobile phone system is set by default.

If you only want to notify once, you can set the number of internal changes.

The specific operation method is as follows:

1. Under the main menu page, click "Settings".

2. Find "Notice" and click Open.

3. Choose programs according to your own needs (here, take information as an example, open "Information")

4. Find the "repeated reminder" at the bottom and choose the number of times you want to remind.