Why is the Meizu note suddenly caller ID unknown

Unknown handling method of mobile phone caller ID:

1. If the caller ID service is not opened on the mobile phone, you can dial 10086 to open it;

2. Calls from the Internet or from areas with hidden caller number services;

3. Calls from special ** organs or relevant departments;

Fourth, mobile phone failure;

5. Some international roaming** display faults, you can try to switch to the network of other operators in the roaming place.

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.

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.

In fact, in today's era of such advanced networks, the first scenario is more likely. In particular, the number can be displayed normally when it is connected to others, but the display of this connection is unknown. At this time, the user should immediately think that this is the network**.

And for the network, you should also be more careful when answering, 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 person mentions money or personal privacy information in the conversation, you must be vigilant.

In addition, if the user finds that no matter who calls him**, it will be displayed as unknown. It is very likely that your mobile phone has not opened the caller ID. Generally speaking, no matter how cheap ** is, it is with an incoming call base display, but occasionally there will be cases where you accidentally do not choose to open it.

In this case, you can contact the operator's manual customer service to solve the problem.

As for the last case, the probability of occurrence is relatively small. The calling concealment service is not open to public users, and is generally only used for secrecy agencies or military personnel. And the possibility of this kind of person calling the ** scum is still very small.

The reasons for this question are as follows:

1. The caller ID is not enabled on the mobile phone number. If caller ID is not enabled, the phone will not recognize the caller ID. The caller ID needs to be enabled on the mobile phone to display the caller ID normally.

2. Mobile phone system problems. You'll need to restart your phone or factory reset it.

3. The mobile phone is infected with a virus. Need to kill the phone stupidly.

It's because you didn't turn on the caller ID, or you turned off the caller ID by mistake.

You can call** and consult customer service in detail.

Activate caller ID for 3 yuan per month.

It should be your phone's problem! Is it the mobile phone card that turns off the caller ID?

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.

If you don't have a caller ID, open it, or if it has been opened before, call customer service to ask if it is still open.

The issue occurs for the following reasons:

1. The caller ID is not enabled on the mobile phone number. If caller ID is not enabled, the phone will not recognize the caller ID. The caller ID needs to be enabled on the mobile phone to display the caller ID normally.

2. Mobile phone system problems. You'll need to restart your phone or factory reset it.

3. The mobile phone is infected with a virus. You need to disinfect your phone.

Caller ID has been disabled. You call the operator** to turn on the caller ID.

If the incoming call on the mobile phone does not display the ** number, follow the following methods to troubleshoot:

1) If a contact shows an unknown number, confirm with the other party whether to use a third-party application to dial the network**, because the network** will not show no number recognition and cannot make a callback.

2) If the unknown number is displayed when other contacts or mobile phone numbers call, it is recommended to call ** to the operator to check whether the caller ID business function is normal.

3) If the above methods do not solve the problem, it is recommended that you try to refresh the latest system of your phone after backing up your data.

1. Try to restart the phone to see if it can solve the problem.

2. Check whether the phone needs to be updated, if it needs to be updated, then update to see if it can solve the problem;

3. There may be an error in the system of the mobile phone;

Solution: Find after-sales service to test your own system.

4. It may be that there is too much software running in the background of the mobile phone, resulting in a temporary error;

Solution: It is recommended to close all running software in the background.

If the problem cannot be solved, it is recommended to find a mobile phone after-sales repair.

It is recommended that the mobile phone should not be restored to factory settings, because the data of the mobile phone will be deleted, and it is recommended to find a professional or after-sales repair directly when encountering such problems, so as not to cause secondary damage to your mobile phone.

It can be displayed through the settings. The steps are as follows:

Open Dialing: Import Contacts:

Select SIM Contact:

Select Card 1: Click on the dot after your mobile number

Select "all":

Click "Import" below

That's it:

1. According to the information you provide, if the number is not displayed in individual calls, it cannot be ruled out that the caller uses the function of number hiding to call you, or uses some networks** to call you.

2. If all calls are not displayed, it is recommended that you contact the local customer service to confirm whether the caller ID is enabled.

1. The caller ID function is not enabled on the mobile phone, and you need to contact the operator's customer service to activate it. 2. The other party has set up a number hiding, which is currently no way to solve it. 3. The setting problem can be solved by flashing or restoring the factory settings.