Why can't oppo phones receive blacklist information completely? ?

How to completely fail to receive blacklisted short messages;

Tools: oppo Ace2, ColorOS v7. 1, SMS v4.2.20

1. First, we open the mobile phone application and click SMS.

Next, we will copy the intercepted information first.

3. Next, we click … in the upper right corner of the information page, and then click "Settings".

4. After entering, we click the interception rule.

5. After that, we click Information Interception.

6. Next, we click on the spam keyword.

7. Finally, we can completely block the blacklisted SMS by clicking+on the top right, then pasting the content just copied, and then clicking Add.