Why doesn't the mobile phone show the other party's number?

If you use an OPPO mobile phone, the incoming call of the mobile phone does not display the other party's number or displays an unknown number.

1, caller ID service is not turned on;

—— In most cases, this abnormality is related to the SIM card and the service of the operator. You can ask the operator whether the local SIM card has opened the caller ID service.

2. The other party has opened or set up the "calling number hiding" service of the operator;

-If the other party has enabled/set "Incoming Number Hiding", the phone will not display the incoming number when receiving an incoming call;

3. Some third-party software is used to hide numbers.

-Some third-party software also has the function of setting the number as unknown or hiding the incoming number. If such software is installed, you can try to uninstall the software in turn to confirm whether it can be restored;

4. Other abnormal conditions

-You can change your phone and card. If it is confirmed that all related services are set correctly and the caller ID of the mobile phone is still abnormal, you can try to replace other SIM cards with the current mobile phone to confirm whether the same problem still exists; Or insert the current SIM card into other brands of mobile phones to confirm whether the same problem will exist. If the problem lies in the SIM card, it is the SIM card or the operator network problem; If the problem lies in the mobile phone, please back up the important information of the mobile phone in advance and take the purchase invoice, warranty card and mobile phone to the OPPO customer service center for testing. You can call the service center in advance to make an appointment. (OPPO official website > service > online inquiry reservation)