Modern Xiaomi smartphones are equipped with powerful tools to protect against spam and unwanted calls, which often work in the background. Users can accidentally block an important contact or not notice how the system itself added a number to the blacklist after a series of complaints. Device owners often face a situation where the subscriber complains about the inability to reach, and the owner of the phone does not even suspect that the lock is possible.
MIUI and its new version of HyperOS have deeply integrated call filtering mechanisms that are different from standard solutions in pure Android. To understand who can’t reach you, you need to know the exact path to hidden security settings. In this article, we will discuss in detail all ways to detect and manage the list of blocked subscribers.
Standard path through the phone application
The quickest way to check which numbers are locked is to use the built-in app for calling. MI Dialer's interface has a hidden settings menu that's not available at first glance. You need to open the Phone app and pay attention to the three dots or gear icon at the top of the screen.
Once you go to the menu, select Settings, and then find the Lock section, which is where the main list of the numbers that are not allowed to enter is stored. The system groups them by type: manually blocked, spam calls or unknown numbers. It is important to note that the name of the item may differ slightly from one firmware version to another, but the logic remains the same.
Why are numbers automatically blocked?
Inside the lock section, you'll see a list of all prohibited contacts. When you click on a specific number, you'll see the details: the date of the lock and the reason, if any, to remove the number from the list, just click on it and select the unlock option or remove it from the blacklist.
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The standard way through the "Phone" is the main one for most users, since it does not require the installation of additional software and works even without the Internet.
Use of the Application Security
In the Xiaomi ecosystem, the central permissions and restrictions management node is the system application Security. It has a green zipper icon and provides deeper access to the call blocker settings. Open the application, find the Antispam or Lock section.
It's a lot more functional than a simple call, and you can not only see a list of blocked numbers, but you can also set up rules for adding them, for example, you can ban calls from hidden numbers or limit contact-only calls from the phone book, and the flexibility of settings allows you to create a personal filter that will ignore unwanted callsers.
⚠️ Warning: Changes to the Security App settings may affect the work SMS-Check the message blocking tab to make sure important codes from banks don't get quarantined.
The Blacklist section displays a complete database of prohibited contacts, you can export this list or import it from a backup, which is especially useful when switching to a new Redmi or Poco smartphone, allowing you to instantly migrate all filters.
Lock settings in MIUI and HyperOS
Interfaces MIUI and HyperOS offer advanced lock scenarios that are activated through the system settings menu. → Annexes → Application settings → Phone. Here are the parameters that control the behavior of the blocker at the system level.
Special attention should be paid to the function of “Keyword Block” for SMS and “Prefix Block” for calls, which allows you to screen out entire groups of numbers that start with certain numbers (for example, the codes of specific operators or cities), Selective blocking helps to combat aggressive telemarketing without having to enter each number manually.
☑️ Checking the lock settings
Newer versions of the shell also feature smart sorting, which can offer to unlock numbers that are no longer labeled as spam in the shared database, and check system offers regularly to keep important calls from delivery services or couriers.
Third-party applications for list management
When standard tools are not enough, users often turn to third-party solutions, apps like Truecaller, GetContact or Call Blocker have their own databases and filtering mechanisms, and they can intercept calls before they even reach a standard Xiaomi call.
When using these programs, it is important to remember that the number can be locked both in the Android system and in the application itself. To find all the blocked, you need to check the settings of each installed call manager separately, application conflicts can lead to the fact that the phone will stop ringing at all.
- 📱 Truecaller – has a powerful spam number database and its own blacklist.
- 🛡️ Call Blocker – allows you to create complex rules based on a schedule.
- 📞 GetContact – More Identity-focused, but has locking features.
Installing a third-party blocker requires broad permissions to access contacts and call logs.Be careful when sharing such data with third parties, and choose only proven solutions with a good reputation in the Google Play store.
Comparison of methods of searching for blocked contacts
For ease of navigation and the best way to manage locks, we have compiled a comparison table that will help you understand which way to go, whether it is a one-time check or a deep setup.
| Method | Difficulty | Functional | Availability |
|---|---|---|---|
| Application Phone | Low. | Basic viewing and deletion | Always available. |
| Security Annex | Medium | Setting up rules, exporting lists | Built into MIUI |
| System settings | Tall. | Deep Filtering by Prefix | Depends on the OS version. |
| Third-party annexes | Medium | Cloud databases, identification | Requires installation |
As you can see from the table, for most users, the phone + security link is enough, but for those who suffer from massive spammer attacks, the combination of system tools and specialized software will give the best result.
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Periodically clean the cache of the Security application through the memory management menu so that the block list is updated correctly and there are no errors in the database.
Frequent problems and their solution
Sometimes users are faced with a situation where the number seems to be unlocked, but the calls still do not pass, this can be due to data caching or synchronization with the Mi Account, in which case a complete reset of the phone application settings through the application management menu helps.
Another common problem is the dead souls on the lock list, numbers that no longer exist or have changed owners but have been on your blacklist for years, and it is recommended to review the list every six months, removing outdated entries. The relevance of the database ensures that you do not block new people using old SIM cards.
⚠️ Warning: If after unlocking the number, calls still do not arrive, check whether the mode "Do not disturb" is set" (DND). It can block all calls except the favorites, ignoring the settings of the blacklist.
In rare cases, the failure may be on the carrier’s side. Make sure that the Blacklist service is not activated additionally through your mobile operator, as it takes precedence over the smartphone settings.