Identification of an incoming call number (Caller ID) is a basic function of a modern smartphone, which allows you to identify the caller even if he is not in your phone book. Owners of devices based on the operating system Android often encounter a situation where this option stops working after changing the SIM card or resetting the settings. Instead of the expected name or number, only “Unknown number” is displayed on the screen, which creates inconvenience and increases the risk of missing important calls.
Restoring the service depends on several factors: the settings of your mobile operator, the configuration of the smartphone itself and installed applications. In most cases, the problem is solved by activating the service with your telecom provider or changing the settings in the call menu. However, there are nuances associated with versions Android and regional characteristics of networks.
This guide will help you step by step understand the reasons for the lack of number identification and return this useful function. We will look at both standard system settings and the use of third-party tools for spam filtering and call identification.
Checking the service status of a mobile operator
Before delving into the depths of your smartphone’s settings, you need to make sure that the Caller ID service is generally active on your side. Many users mistakenly believe that caller ID is enabled by default on all plans, but this is not always the case. Some telecom operators disable this function on prepaid tariffs or require its separate activation through your personal account.
The fastest way to check the status is to use the USSD command. For most large operators in Russia and the CIS, there are universal codes that instantly display the status of the service on the screen. If the service is disabled, the system usually offers to connect it for free or for a nominal fee.
⚠️ Attention: tariffs and conditions for connecting services can be changed by operators unilaterally. We recommend checking the current USSD codes and the cost of the service in the official application of your operator or on the website before sending commands.
Here is a list of popular commands for checking and connecting Caller ID from the main operators:
- 📱 MTS: dial
*111*0887#to check or*111*0887*1#to connection. - 📱 MegaFon: use the command
*105#and follow the instructions in the menu or dial*105*0051#. - 📱 Beeline: check the status through
*110*09#and to connect use*110*091#. - 📱 Tele2: the service is usually enabled by default, but you can check it through
*155*611#.
After sending the command, wait for SMS confirmation. If you receive a message about successful activation, proceed to setting up your phone. In rare cases, updating the status on the network side can take up to 24 hours, although usually this happens instantly.
Setting up built-in caller ID in Android
If the operator’s service is active, but the number is still not detected, the problem lies in the settings of the device itself. The menu interface may differ depending on the manufacturer's shell (for example, MIUI, One UI or ColorOS), but the logic of actions remains the same for the entire ecosystem. Android.
You need to find the section responsible for processing incoming calls. Often users skip this step because the system may default to a simplified display mode. Go to the standard Phone application that you use to dial a number and open its settings.
Usually the path to the desired parameter looks like this:
Phone application → Settings (three dots or gear) → Additional settings → Number identificationIn this menu you will see a switch responsible for the “Identify caller number” or “Show caller ID” function. Make sure it is in the active position. On some devices, there is also an option “Use Google service” or “Advanced search”, which should be turned on for better accuracy.
If there is no “Caller ID” item in the phone settings menu, try clearing the cache of the “Phone” application through Settings → Applications → Phone → Storage → Clear cache. This often solves software glitches.
It is worth noting that on smartphones with “pure” Android (for example, Google Pixel or Motorola) this function is closely integrated with Google services. While devices Xiaomi or Samsung can use their own databases or integration with local definition services.
| Manufacturer | Path to menu (approximate) | Features |
|---|---|---|
| Samsung | Phone → Add. settings → Number identification | Integration with Smart Call |
| Xiaomi / Redmi | Phone → Settings → Advanced settings → Caller ID | Requires Internet connection |
| Google Pixel | Phone → Settings → Caller ID and spam | Uses the Google database |
| Huawei / Honor | Phone → More → Number identification | May require updating the database |
Using Google Assistant and database
Modern versions Android offer a powerful built-in call identification tool that does not require the installation of third-party apps. This feature uses Google's huge database to identify numbers of organizations, delivery services, and even potential spam.
For this mechanism to work correctly, several conditions must be met. First, you must be signed in to your Google Account on your device. Secondly, a stable Internet connection is required at the time of an incoming call, since the request to the database occurs in real time.
⚠️ Attention: the caller ID function through Google may transmit data about incoming calls to the company's servers for processing. If complete privacy of your call metadata is critical to you, consider disabling this option.
To enable this feature, go to your Google app or Assistant settings. Find the “Spam and Call Screen” section (or similar in your software version). Here you can turn on the “Identify caller number” toggle switch. The system will offer to download the current database, if necessary.
How does number identification work without the Internet?
Without access to the network, the smartphone can only determine those numbers that are already stored in the device’s local memory or the cache of recent calls. To identify unknown numbers from global databases, the Internet is required.
The advantage of using Google services is the constant automatic updating of the database. You do not need to manually download definition files, as was the case with older versions. Android. The system itself uploads information about new organizations and fraudulent schemes.
Third-party applications for number identification
In cases where the built-in tools do not work correctly or the operator’s database is scarce, specialized applications come to the rescue. Market Android offers dozens of solutions, from simple determinants to powerful all-in-one tools for blocking spam.
The most popular solutions are Yandex.Caller Identifier, GetContact, NumBuster and Kaspersky Who Calls. These applications have their own databases, which are formed thanks to the user community. This allows you to identify numbers that have not yet entered the official registers of operators.
The process of connecting a third-party Caller ID usually looks like this:
- 📥 Download the application from the official store Google Play.
- 🔐 Provide the necessary permissions to access calls and contacts (without this, work is impossible).
- ⚙️ In the settings of the application itself, enable the “Built-in identifier” or “Show name on top of the screen” function.
- 🔄 In the phone system settings, select the installed application as the main one for identifying the number.
It is important to understand that free versions of such apps often contain advertising or have limits on the number of requests per day. Paid subscriptions usually provide access to expanded databases and an anti-spy feature that hides your number on outgoing calls.
Third-party applications are often more effective than built-in tools in identifying personal numbers and spam, but require more battery resources and access to your contacts.
Problems with dual-SIM and roaming
Owners of smartphones with two active SIM cards may encounter a situation where Caller ID works only on one of them. This is a common technical feature related to the way the modem processes signals from different operators simultaneously.
If you are roaming, the situation may get worse. Not all of your carriers' foreign partners support full caller ID (CLI) transmission. In such cases, the screen may display a number, but without a name, or even the words “Roaming.”
To diagnose the problem, try the following:
- Temporarily disable the second SIM card in the settings and check the operation of Caller ID on the main one.
- Make sure that in the call settings there is no restriction "Only via SIM 1" for all outgoing ones if you are checking incoming calls on the second one.
- Reboot the device after changing the active SIM card for re-registration in the network.
☑️ Dual-SIM diagnostics
It is also worth remembering that some budget smartphone models have a simplified modem that physically cannot process the Caller ID signal on two channels simultaneously at high speed. In such cases, software correction of the situation is impossible.
Private questions and answers (FAQ)
Why is only the number, but not the contact name, determined?
This can happen for two reasons. Either the contact was saved with an error in the number format (for example, without the +7 country code), or the synchronization of contacts with your Google account is broken. Check the format of the number entry in the phone book.
Is it possible to connect Caller ID for free forever?
Depends on the operator. Some tariff plans include this service in the base price. On other tariffs it can be free only for the first month, and then charged daily. Check the conditions in the operator's application.
Does Do Not Disturb mode affect the operation of caller ID?
Yes, in some settings, Do Not Disturb mode can block the display of the caller's name on the locked screen, allowing only vibration or sound. Check the exceptions in the settings of this mode.
What to do if the Caller ID disappears after updating Android?
After major system updates, privacy settings are often reset to default values. Go to the settings of the “Phone” application and re-activate the “Identify caller number” checkbox.
Is the number detected if the caller has hidden it through the code?
No. If the subscriber used the number hiding service (for example, dialed a code in front of the number or configured hiding in the operator’s menu), it is impossible to determine his identity through a standard Caller ID. “Hidden number” or a similar message will be displayed.