How does Apple 12 intercept incoming calls and text messages from strange numbers?

Apple 12 intercepts incoming calls and text messages from strange numbers as follows:

1, open the phone and click Enter Settings, then click Enter Information.

2. Turn on the switch to the right of the person who filters the unknown files, and intercept the short messages of strange numbers.

3. Turn on the phone settings, turn on the phone, turn on the switch to the right of mute unknown calls, and intercept calls from strange numbers.

Interception of strange numbers means that the mobile phone will automatically intercept numbers, landline numbers and harassing calls that are not in the address book.