How to recover blocked messages?

Take Huawei P20 mobile phone as an example

operation sequence/order

1. First, find the application "Dial" icon on the mobile phone desktop, and click to enter the new operation interface.

2. Then enter the dial-up operation interface, find more icon options, and click Open.

3. After entering the new operation interface, find the "harassment interception" option and click Open.

4. After entering the harassment interception operation interface, find the icon option of the gear and click Open.

5. Select the contact person whose information needs to be restored, and click "Delete".