How does Apple intercept strange numbers and text messages?

Mobile phones will receive all kinds of harassing calls and text messages, so how does Apple intercept strange numbers and text messages? Let's take a look ~

How does Apple intercept strange numbers and text messages?

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.

This paper takes iphone 1 1 as an example and applies it to IOS 14.4 system.