Caller ID unknown number. What's wrong?

Incoming caller ID number may be due to the following reasons: mobile phone setting problem, mobile phone operator problem, caller ID problem and mobile phone security software problem.

1. Mobile phone setting problem: The caller ID setting of the mobile phone may be changed, resulting in the caller ID as an unknown number. You can check the setting of caller ID in the settings of your mobile phone to confirm whether it has been changed.

2. Mobile phone operator problem: The mobile phone operator may cause the incoming call to be displayed as an unknown number. You can contact the mobile phone operator and ask if you are concerned about this problem.

3. Call number problem: If you receive an unknown call, it may be because the call number is hidden. You can contact the caller and ask if his number is hidden.

4. Mobile phone security software problem: If security software is installed on the mobile phone, it may be because of security software that the incoming call is displayed as an unknown number. You can check the security software settings on your mobile phone to confirm whether you are concerned about this problem.

What if I receive a strange number?

1. Don't answer or reply at will: If the contents of incoming calls or short messages from strange numbers are unknown, it is recommended not to answer or reply at will to avoid revealing personal information.

2. Ask the other person's identity: If the other person is a relative or colleague, you can ask how the other person got your number to confirm the other person's identity.

3. Mark as a strange number: You can mark the strange number as a harassing call or a fraudulent call, so that you can identify it in time when you receive it next time.

4. Find the source of the number: If the other party obtains your number through social media or other channels, you can try to find the information of the other party to confirm its identity.

5. Refuse to answer: If the other party keeps calling you, you can choose to refuse to answer or blacken the other party's number.