Why are incoming calls displayed unknown instead of numbers?

Hello dear Samsung users:

Depending on your description, if your phone's caller ID is unknown, there may be several reasons:

1.If this is the case with individual **:

1).It is possible that the other party has turned on a feature similar to a hidden number.

2).The other party may call through unconventional channels, such as through the Internet**.

2.If this phenomenon occurs in all **:

1).The caller ID function is not enabled on the mobile phone, please check with the operator whether the caller ID is turned on.

2).Replace it with a different SIM card.

Try. 3).Check if your phone has firmware system push notifications, and if so, upgrade your phone to the latest version. View by: Settings - General - About Device - System Update - Update.

If the problem still exists, it is recommended that you bring the purchase invoice and the three-guarantee certificate to send the mobile phone to your nearest after-sales service center for testing.

It is recommended that you apply for "appointment to store" on Samsung's official website to enjoy priority repair services

After the appointment is successful, please bring your machine, invoice and warranty card to the service center where you made the appointment on time.

Comments, suggestions, complaints, please click:

It may be software with hidden numbers, and I have encountered unknown calls as well. If the data connection is not available, it is not the APN's fault. You see if the APN is set up right

Depending on the description, there are several possible scenarios:

1. This is because you have not activated the caller ID function. Caller ID service is a function of displaying caller information on the screen of the mobile phone, after opening this service, the caller will know the specific number of the other party.

2. The other party has enabled the call hiding function. After the other party activates this service, the ** number will not be displayed on your screen when the call comes, and only the unknown number or no caller ID will be displayed.

3. If the other party uses the network to dial your number, the number will not be displayed when the call comes.

Fourth, the other party used some hidden number software, most of these numberless calls are harassment**, and the other party asks you to answer ** in this way, so as to spread fraudulent information.

If you use an OPPO phone to call does not show the other party's number or displays an unknown number, how to deal with it:

1. It may be that the caller ID function is not activated, you can contact the operator to confirm whether to activate the caller identification service;

2. If the other party has set up "Caller ID Hide", the caller ID will not be displayed when the mobile phone receives an incoming call;

3. Some third-party software also has the function of setting the number to unknown or hiding the caller number, if you have installed such software, you can try to uninstall the software in turn to confirm whether it can be recovered;

4. If the SIM card is placed in other mobile phones, it is recommended to replace the SIM card;

5. If this phenomenon still occurs when other SIM cards are put into the mobile phone, please back up your personal data, and bring the purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and processing.

The common reason is that if the caller ID function is not activated, an unknown number will be displayed when the call comes. Another reason is that if you have turned on the display function, and the display still shows an unknown number, then the other party is likely to call you through unconventional channels such as through the network.

Caller ID service is a kind of service that can automatically enter the number and display it on the display screen of the machine, and can know the caller's number in advance.

There are several possible scenarios when the caller ID is unknown:

The other party is using a private number or a foreign number, and the local mobile phone cannot recognize it;

The other party is using a network or a soft network, which may not display the correct caller ID;

The other party sets an anonymous number when dialing **, and is unwilling to disclose his number;

Your phone is set up with caller ID blocking, which prevents unknown numbers from being displayed.

If you often encounter a situation where the caller ID is an unknown number, you can consider the following solutions:

Try using a different phone or SIM card to see if the number is displayed properly;

Check your phone's caller ID settings to make sure you haven't disabled the ability to display caller IDs;

Contact the operator's customer service to inquire if there is a situation where the number cannot be displayed;

If you frequently encounter unknown numbers, you can choose not to answer or use the block feature to prevent harassment**.

Hope it helps, hope, thank you!

The reason for the display of "unknown number" is as follows: If the network operator or mobile phone system does not recognize the home carrier of the caller number, it will be "marked" as an "unknown number" or "private number".

Notes on Receiving "Unknown Numbers":

1. The ** is from the network**, or the caller uses network software to hide the number.

2. The user has not activated the caller ID function. Of course, it is also possible that I accidentally canceled the call in ** last month to display.

3. The caller has enabled the caller hiding function. However, it is important to understand that this feature is only available to people with special industry identities.

And for the Internet**, you should also be more careful when answering the book, because this kind of **is likely to be fraud**or harassment**. If users are worried about missing something important**, they can choose to answer. Because today's mobile phones** are basically free to answer, and there will be no deduction for answering.

However, if the other party mentions money or personal privacy information in the conversation, you must be vigilant. <>

1. If only individual calls are not displayed, it may be that the other party uses the network ** or third-party software to dial;

2. The other party has opened the business of hiding the number;

3. ** is from overseas and cannot be successfully identified;

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

An unknown number caller is a caller ID that is not known**. Usually, this kind of number handles the "caller hidden" service. Caller ID hiding refers to the service that does not display the caller ID to the other party when the user is calling.

After the process, dialing ** to others will hide the number, and the number will not be recorded. However, this business will not be open to ordinary people, and is generally only used in special industries such as smart secrecy organs and military personnel.

In fact, if you want your phone to display an unknown number, it's very simple, if you want to show your own number, you can show your own, and if you want to display an unknown number, you can also achieve it. How to achieve this kind of effect, generally, as long as the mobile phone frequency band is not within the scope of operation of China Telecom, Mobile, Unicom or other international mobile phone operators, the location number is displayed.