Where can I set the blacklist function for Apple iOS 8 unfamiliar calls?

Step 1: click the phone number to be added to the blacklist, and then click the exclamation point.

Step 2: There will be a "block this call number" at the bottom of the interface ".

Step 3: Click "block contact" in the pop-up confirmation box.

Note: You can click "Blacklist" on the "settings-phone" page to view all blacklist calls.

Friendly reminder. Now that you have set up this phone, you will no longer be able to get through your phone, and you will not be able to receive the text message.