Iqoo8 caller ID unknown number

Investigation and handling method of caller ID unknown number;

1. If only a few incoming calls are not displayed, it may be that the other party used VoIP or third-party software to dial;

2. The other party has started the business of hiding numbers;

3. The phone came from abroad and could not be successfully identified;

4. It may be that the caller ID package has not been opened, so it is recommended to consult the operator to which the SIM card belongs.

For more questions, please enter the online customer service of vivo official website /vivo Mall APP-mine-or click the webpage link to enter the manual customer service for consultation.