When Xiaomi Redmi is silently vibrating in your pocket, and there is only a void on the screen or a mysterious "Unknown Number" that can piss off any user, it's not just a small interface bug, it's a critical violation of the basic function of the smartphone - communication. You miss important business calls, can't identify couriers or ignore emergency calls from relatives, thinking that it's again spam.
The problem of not having a caller ID on devices with a MIUI shell or a new HyperOS is met with alarming regularity. Often the reason is not a hardware breakdown of the speaker or screen, but a software conflict between the system phone, directory and Google services. Sometimes a simple update is enough, and in other cases, you will need to deep cache cleaning or even change the system settings through the engineering menu.
In this article, we will look at all the possible scenarios why Redmi Note or Poco stopped showing who is calling you, and we will look at both the banal synchronization errors and the complex access rights conflicts that block the display of the contact name when an incoming call is made.
Basic checks for synchronization and contact
Before you go into deep system settings, you need to make sure the obvious. Often users sin by not saving the number in the device's memory, but only showing up in the cloud, which is currently not accessible. Check if the contact is visible in the standard "Contacts" application when the Internet is open.
If the number is recorded but the name doesn't pop up when the call is made, it's likely that the connection between the number database and the telephony module is broken, and the system just doesn't have time to pull the name from the address book at the time of the incoming signal, which is especially true for devices with a large amount of memory filled with thousands of records.
⚠️ Note: If you use third-party number detectors (like GetContact or NumBuster), they can intercept the call and block the display of the standard Xiaomi contact card.
Make sure that sync with your Google account is active and working correctly. Sometimes the crash happens at the server level and the phone simply can't get the actual contact name. Go to your account settings and force the update to run.
- 📱 Open "Settings" and find the "Accounts and Synchronization" section".
- 🔄 Select your Google account and click on Sync".
- 👤 Make sure the check box opposite the "Contacts" item is active and there is a mark about successful sync.
- 💾 Check if contacts are hidden in the Phone application itself through the filter menu.
It’s also worth checking if the contact is locked or display settings, and in rare cases, the user accidentally hides certain groups of contacts, which causes them to become unidentifiable when the call is made.
Configuring permissions for the "Phone" application
The most common reason Xiaomi doesn’t show the name of the caller is the lack of necessary permissions from the system application.The MIUI shell is famous for its aggressive energy saving policy and strict isolation of processes, which sometimes plays a cruel joke with basic features.
The Dialer app needs to have full access to read contacts and call logs, and if you've recently upgraded your system or reset your permissions, those permissions could fly off. Without the right to read contacts, your phone can't physically match your incoming number to your book entry.
To check and configure the rights, go to Settings → Applications → All applications. Find the Phone app (green handset icon) in the list. Here we are interested in the Permissions section. Make sure that Contacts and Phone are "Allowed".
☑️ Access rights verification
Special attention should be paid to the function "Out-Run." If the system prevents the auto-run of the phone application, it may not properly handle incoming calls in the background.
⚠️ Warning: Do not turn off the battery for the Phone app in the Energy Saving section. The "No Limits" restriction is critical for stable call performance.
Sometimes, a complete reset of the app helps, and it won't delete your contacts, but it will return the call settings to factory settings, removing any possible configuration software errors.
Cleaning cache and system application data
The accumulated garbage in the cache of system applications is a scourge of the Android operating system, and Redmi is no exception here. Temporary storage files, responsible for the rapid loading of avatars and names, can be corrupted, and as a result, instead of a name, you see a void or a generic icon.
The cleanup procedure is safe for your personal data, as long as you follow the instructions clearly, and we will clean the cache of three key components: the Phone application, the Contacts and Dialer Storage application and the system process.
Go to Settings → Apps → All apps. Find Contacts. Click Clear and select Clear Cache. If that doesn’t work, you can try Clear Everything, but make sure your contacts are synced to the cloud, otherwise they may disappear from the device (but stay on Google’s server).
Cleaning procedure for maximum effect:
1. Clear the cache of the "Phone" application
2. Clear the cache of the "Contact" application
3. Clear the data of the application "Contact Storage"Once the contact store data is cleared, the system can go dumb for a few minutes by re-indexing the entire phone book, during which time it is better to stop making calls and let the processor complete background tasks.
What to do if the contacts are lost after cleaning?
It is also important to clear the cache of the Google Play Services app, which is responsible for many background processes, including identifying numbers through the Google database. Go to the settings of this app and clear the cache.
Conflicts with number determiners and third-party launchers
Many Xiaomi users install third-party applications to identify numbers, block spam or call interfaces. Programs such as Truecaller, Yandex with Alice or various "Callers" from the market often conflict with the standard MIUI module.
When an incoming call arrives, the system tries to hand over control to a third-party application, and if there is a delay or error in the third-party program's code at that point, the standard call screen simply doesn't have time to show up, and you end up with a black screen or a standard stub without a name.
Try temporarily removing or disabling all third-party number detectors, and if the problem has disappeared, then the conflict was in them, and in the settings of such an application, find "Integration with the system" or "Standard call" and try to switch modes.
- 🚫 Remove newly installed apps related to calls or contacts.
- 🛡️ Check if Do Not Disturb or Block Unknown mode is enabled, which may hide the interface.
- 🎨 If there is a third-party launcher (theme of design), return the standard theme. MIUI check out.
- 📞 In the settings of the application-definition, disable the function "Replace the standard call screen".
It’s also worth checking the theme settings. Some custom themes downloaded from the theme store may be poorly optimized and may contain bugs in the lock screen or incoming call.
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Use a standard theme, "Classic" or "Basic" for diagnosis, and if the caller's name is displayed in the standard theme, the problem is visualizing your current theme.
Specificity of work of SIM-cards and telecom operators
Sometimes the problem lies not in the phone, but in the way the caller data is transmitted. ID The operator, if you use two SIM-cards, try to switch priority SIM for calls or move them into slots in places. SIM 1 on some Redmi models takes priority in signal processing.
Operators may not share the name of the subscriber if the caller or you have the Anti-Number service enabled, and roaming may also be disrupted when the number format differs from the home region and the phone cannot recognize the country or city code for identification.
Check the format of the numbers in contacts. For the correct operation in international roaming and when using VoLTE numbers are better to save in an international format (for example, +7 instead of 8).
| Problem. | Probable cause | Decision |
|---|---|---|
| No name, just a number. | Lack of synchronization | Enable Google Sync |
| Black screen on the call | Conflict of topics or sensor | Change the subject, check the proximity sensor |
| Writes "Unknown" | Hidden number of caller | Nothing (operator protection) |
| Failure after update | Contact cache error | Clear the data of the "Contact" application |
If you’ve changed carriers recently, it’s possible that old network settings are getting in the way of correct identification. Try resetting network settings: Settings → Connection & Sharing → Reset Wi-Fi, mobile networks and Bluetooth.
Radical measures: resetting and reflashing
If none of the above methods worked and Xiaomi Redmi still ignores the names of the callers, it may be that system files are damaged or a critical error occurred in updating the firmware.
The first step is to completely reset your phone, and you should be careful: this action will delete all your phone data, so make sure to back up your contacts, photos and messages to your Mi Cloud or computer.
To do the reset, go to Settings → About Phone → Settings Reset → Erase all data. Once you reboot, the phone will look like new. Without installing third-party apps, check the call work. If everything works, the software was the problem.
⚠️ Warning: Before resetting, make sure you remember the password from your Mi Account and Google account.Without them, activating your phone after reset will be impossible due to theft protection.
In extreme cases, even if the reset does not help (which happens when the EFS partition or modem is damaged), you will need to flash the device through the computer using the Mi Flash Tool utility.
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90% of caller ID problems are solved by clearing the Contacts cache and checking access rights.
Remember that if the phone is under warranty, self-flashing can deprive you of warranty service, in such cases it is better to contact an authorized service center.