How to get rid of the contacts who blacked out the mobile phone?

Take Apple's mobile phone as an example, it needs to be operated in the device mobile phone, and the operation method is as follows:

Tool: iPhone 8

Operating system: iOS 14.4. 1.

1. Select the phone in the phone settings.

2. Then enter the interface of the mobile phone and select the blocked contact;

3. Enter the blacklist interface and select Edit;

4. After the delete button is displayed, select the delete button from the delete blacklist;

5. Then it appears and chooses to unblock;

6. Finally, select Done.