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How to set Apple SMS to only accept phone book information?

Open do not disturb mode and set the white list.

1. First click the settings icon on the iPhone home screen, click Open, find the "do not disturb mode" option in the settings list, and click Enter.

2. Then, in the time setting, set the anti-interference time according to your actual needs.

3. Secondly, click the AllowCallsFrom option to enter the settings.

4. Finally, select all contacts. When the Do Not Disturb mode is turned on, all numbers will be blocked except the contacts in the address book who can dial in.