How does Apple's mobile phone hack the SMS of mobile phone number?

Hello! First, open the short message and select a message you want to block; Click on the number displayed below the avatar above;

Select the third "information"; Click the number displayed in the first column after entering the page; Select "Block this calling number";

Select "Block Contacts" in the pop-up interface;

Or return to the home screen of the mobile phone and open the settings; Slide down manually to find "information"; Select "Blacklist" after entering the page;

Just enter the number you want to blacken in Add.