Two Apple phones use the same ID number. How to solve the problem of telephone and SMS in series?

You can cancel the synchronization between the information in iCloud and the address book.

Materials/tools: iPhone8.

The specific operation includes the following steps:

First, open "Settings" on the phone desktop.

Second, after opening "Settings", click the "Apple ID" avatar above to enter.

Third, click "iCloud" on the "Apple ID" page to proceed to the next step.

4. Find "Address Book" and "Information" on the "iCloud" page, and click "Button" to close.

5. After the address book and information in 5.iCloud are synchronously closed, the data of the two mobile phones will not be connected in series.