How to intercept SMS for overseas information of Apple mobile phone?

The interception of overseas information of Apple mobile phone is as follows.

1. Open the settings of Apple's mobile phone and click the information option.

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.