How does the anti-fraud app set up phone interception?

The application sets up phone interception like this:

Tools: mobile phone, national anti-fraud center App.

1. Click "National Anti-Fraud Center" on the mobile phone desktop to enter the app.

2. On the application homepage, click the "Call Reminder" option.

3. In the incoming call reminder interface, click "Open Now".

4. Click "Open immediately" in the pop-up prompt to open the interception of harassing calls.

5. In the phone setting interface, just turn on the call screening and identification function.