Yandex Number Defier has become an indispensable tool for millions of users, allowing you to identify incoming calls from unknown subscribers, block spam and scammers. However, owners of Xiaomi smartphones often face difficulties in configuring this tool due to the features of MIUI firmware and the limitations of Android. Unlike standard instructions that do not take into account the specifics of Xiaomi devices, this guide will help you understand the nuances of activating the service on your phone.
Compounding the problem, MIUI aggressively optimizes the background of applications, and Yandex Definition requires constant access to calls and contacts. Without the right setup, the service will either not work at all or will work with a delay. In this article, we will discuss not only the basic installation, but also the hidden MIUI settings that guarantee stable operation of the determinant, you will learn how to bypass system restrictions, which permissions are critical, and what to do if numbers are still undetermined.
Why does Yandex Define not work for Xiaomi?
The main cause of the problem lies in the energy-saving MIUI algorithms. By default, the system blocks background activity of most applications, including Yandex Determinator, to extend battery life.
- 🔴 Does not show information about the incoming number (delay or complete absence of data).
- 🔴 Does not block spam calls despite the feature enabled.
- 🔴 It stops working after the phone restarts.
- 🔴 Does not update the database of numbers (outdated data about callers).
The second common problem is incorrect permissions: Yandex Definition requires access to call logs, contacts and notifications, but MIUI can automatically reset these settings after updates or cache resets. In addition, on some Xiaomi models (for example, Redmi Note 10 Pro or POCO X3 Pro), the service conflicts with the built-in Security application, which blocks it as “suspicious”.
Preparation of the phone before installation
Before you install Yandex Determiner, you need to disable MIUI optimization for the future application, which will prevent the system from automatically shutting down the service.
- Open Settings → Applications → Application Management.
- Click on the three dots in the top right corner and select Special Access.
- Go to Battery Optimization.
- In the list, find Yandex Determiner (if the application is not installed, this item can be skipped and returned later).
- Choose No Limits.
It is also recommended to update MIUI to the latest version, as older firmware (below MIUI 13) may not have critical permissions for working with calls. Check the relevance of the software in Settings → About Phone → System Update.
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If your Xiaomi model does not have the option "Battery Optimization", use the alternative path: Settings → Battery and Performance → Selection of applications and set the "No Limits" mode for Yandex Determiner.
Step-by-step instructions for the inclusion of Yandex Determiner
Now, let's get to the immediate settings. Follow the instructions carefully, because skipping even one step can lead to a service that is not working properly.
Installation of the annex
Download Yandex Number Definiter from the official source:
- 📱 Google Play (for devices with Google services).
- 📱 AppGallery (for models without Google, for example, Xiaomi for the Russian market).
- 📱 Official APK from Yandex website (if other options are not available).
After installation, don’t launch the app right away – set up permissions first.
2. Set up permissions in MIUI
Go to Settings → Applications → Application Management → Yandex Determiner and activate the following permissions:
Access to call logs | Access to contacts | Display on top of other apps | Auto Launch | Permission to send notifications-->
| Permission | What do you need? | How to turn it on |
|---|---|---|
| Call logs | Defining incoming numbers and blocking spam | Settings → Applications → Yandex Determiner → Permissions → Call logs |
| Contacts | Synchronize with your phone book | Settings → Applications → Yandex Determiner → Permissions → Contacts |
| Displaying on top of other applications | Displaying information about the call during the conversation | Settings → Special access → Display on top of other applications |
| Auto-start | Starting the service after restarting the phone | Settings → Battery and Performance → Auto-Run |
Important: On Xiaomi models with MIUI 14+, you must additionally allow access to notifications in the Settings → Notifications → Yandex Determiner and enable the “Show Notifications” option.
3. Setup within the application
Launch Yandex Determiner and execute:
- Click Enable Number Definition and confirm access to calls.
- In the Settings → Block spam activate the option to Block fraudsters.
- In Settings → Notifications, turn on Showing the name of the caller.
- In Settings → Additional activate Run when booting.
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If after setting up Yandex Definition does not show the names of the callers, restart the phone - it will reset the cache of the system and apply all permissions.
Solving common problems
Even after setting up correctly, Xiaomi users may encounter errors. Consider typical scenarios and ways to fix them.
1.The identifier does not show the names of the callers
Causes and solutions:
- 🔄 App cache: Clear the cache in Settings → Annexes → Yandex Definer → Warehouse → Clear the cache.
- 📵 Conflict with MIUI Dialer: Disable the built-in number definition in Settings → Annexes → Phone. → Notifications → Definition of numbers.
- 🔒 Limitations MIUI: Add the app to Settings → Battery and performance → Block and select No Limitations.
2.The service does not block spam calls
Check the following points:
- 📞 In the settings of Yandex Determiner is included the option to Block fraudsters.
- 🔄 Update the number database manually: Settings → Update the base.
- 🛡️ B Settings → Annexes → Phone. → Permissions Disable Permissions Change Call Settings for other applications (e.g. Truecaller).
What to do if Yandex Determiner conflicts with Truecaller?
Alternative ways to activate for older Xiaomi models
On devices with MIUI 12 and below (such as the Redmi Note 8 Pro or Mi 9T), standard methods may not work due to outdated permission architecture.
- Install. ADB-Drivers to the computer and connect the phone to USB (Turn on the debugging. USB In Settings → The phone. → Version. MIUI → 7 times press the assembly number).
- Execute the command to grant special permits: adb shell pm grant en.yandex.call android.permission.READ_CALL_LOG adb shell pm grant ru.yandex.call android.permission.WRITE_CALL_LOG adb shell pm grant ru.yandex.call android.permission.BIND_NOTIFICATION_LISTENER_SERVICE
- Reboot the phone.
This method bypasses the limitations of MIUI, but requires technical skills. Be careful - incorrect use of ADB can disrupt the system.
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For models without Google Play (e.g. Xiaomi for China), download APK only from Yandex's official website. Installation from third-party sources may result in the service being blocked by MIUI antivirus.
How to check if Yandex Determiner works?
To ensure that the service is functioning correctly:
- Ask a friend to call you from a number that isn’t in your contacts.
- During the call, a plaque with the name of the subscriber should appear (if the number is in the Yandex database).
- After the call, check the log in the Yandex Definition → History application – there should be a number marked (for example, “Bank” or “Spam”).
If the name is not displayed but the number is defined as spam, then the problem is in the display settings. Go to Settings → Appearance and turn on the option to Show the name on the call screen.
⚠️ Attention: On some firmware MIUI (For example, the global version for POCO F3) Yandex Determiner may conflict with the system application Google Phone. in this case, install the standard application "Phone" from Xiaomi by default in the settings.