How to reject harassing calls starting with 0?

Use the "match number at the beginning" function to block the number at the beginning of 0, and mainstream brand mobile phone systems will join this function. Here, taking Huawei mobile phone as an example, the setting process is given:

First turn on the phone to dial, click "Options" in the upper right corner, and click "Harassment Interception" in the pop-up menu.

Second, click "Interception Rules" at the bottom.

3. After entering the interception rules, click "Blacklist".

4. Click "Add" at the bottom and click "First Number Matching" in the pop-up menu.

5. Fill in the number "0" in the input field, and then click OK.

6. After the segment settings are matched, incoming calls and text messages of all numbers in the segment will be automatically rejected.