Can malicious harassment of vivo wallet be hacked?

Take vivo X6 mobile phone as an example, the setting method is as follows:

First, turn on the phone, find the "contact" icon on the phone desktop, and then click Enter.

2. After entering the contact, find the contact to be blacked out, click to find the "More" item, and click Enter.

3. After entering, find the item "Join Blacklist" and click Enter.

4. Then click OK in the reminder menu that pops up in the system, so the contact will be blacked out.

Note: After the contact is blacklisted, if the contact calls you, there will be a prompt that "the phone is off" or "it is not convenient to answer".