How to unlock a phone number from the blacklist on Android Xiaomi

When an important call is not received and a missed call is not even shown on the screen, it is often an unpleasant surprise for owners of Xiaomi smartphones. This happens when the number of the interlocutor by mistake or in a fit of emotion was blacklisted. In the MIUI interface and the new HyperOS, the locking of subscribers is implemented quite deeply, and finding a way to return the connection is difficult without detailed instructions.

The Android system on Xiaomi devices offers several layers of protection against unwanted calls, including built-in filters and integration with the Security app. If you stop receiving messages or calls from a particular person, the first thing to do is check these settings. The unlocking process takes only a couple of minutes, but requires attention to the details of the menu.

In this article, we will take a look at all the available methods for removing numbers from locking. You will learn how to find the hidden “Blocked” section, how to manage the list through the system application and what to do if the number is blocked by your mobile operator. Remember that unlocking the number through the smartphone settings does not remove the lock if it was installed at the level of your operator’s cellular network.

Where is the blacklist in MIUI and HyperOS?

Searching for a blocked contact list on Xiaomi smartphones can be confusing for an untrained user. Unlike pure Android, call management is split between the standard caller and the system application Security.

To get to the desired menu, you need to run the Security app (green icon with a shield). In the window that opens, you should scroll down to the Tools or Antispam section, and this is where all the call and message filtering settings for the entire system are stored.

• 📞 Open the Phone app and click on three dots in the corner, then select Settings» → «Lockdown».
• 🛡️ Launch the Security app and find the Antispam item in the bottom menu or tool list.
• ⚙️ Go to the general system settings and search for the word “Block” to find the desired section directly.

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If you can’t find the Security app on your desktop, search for all apps by swiping the screen down, or find it in the Tools folder.

The interface may vary slightly depending on the version of the MIUI firmware. On older versions, the locker settings were often logged in through the gear icon inside the Phone app, while newer versions of HyperOS seek to unify access through a central security hub.

Method 1: Unlocking through the Security Application

This is the most reliable method that works on the vast majority of Xiaomi, Redmi and POCO devices.The Security app is the system access control center, and this is where the blacklist in its classic sense is stored.

Once you start the application and go to the Antispam section, you will see a list of all the blocked numbers, which displays not only the number itself, but also the date of the lock, as well as the type of lock (calls or SMS). To delete the contact, you just click on it and select the appropriate action.

⚠️ Note: If you delete a number from the list in the Security app, make sure you do not activate Quiet Mode or Do Not Disturb mode, which can simulate incoming lockdown.

The process of unlocking is as follows: in the list of blocked, find the contact you want, click on it to open detailed information, and in the menu that opens, you will see the Unblock button or the basket icon that will remove the number from the list of prohibited.

It is important to note that once unlocked, the call history or messages from that subscriber that has been blocked will not automatically recover.System logs do not store content filtered by anti-spam unless you have previously set up saving them to a separate folder.

Method 2: Control via a standard Phone application

In some scenarios, especially when using a Google caller instead of a standard MIUI Dialer, lock settings may be duplicated or located directly in the dialing interface, which is typical for global firmware versions.

Open the Phone app and tap the three vertical dots in the top right corner of the screen. In the drop-down menu, select Settings. Next, you're interested in Locked Numbers, and it shows you a list of all the contacts that can't reach you through the standard call interface.

If you use a standard MIUI call, the path may be slightly different: Settings → Lock → Blacklist. In this menu, you can not only delete numbers, but also configure exceptions, such as allowing calls from contacts or, conversely, blocking everyone but a select few.

Method 3: Unlocking through Call History

There is a faster way to unlock a caller if they have recently tried to reach you but were automatically rejected by the system, and in the call log, such calls are often marked with a special icon or simply absent if the concealment function is enabled.

However, if you have previously received calls from a subscriber and you have manually blocked the number directly from the log, you can unlock it by the reverse route: find the contact number in the call history (if it is displayed there) or go to the contact card in the phone book.

• 📂 Open the call log and find the number you need to unlock.
• 👤 Click on the “i” icon or arrow next to the number to open details.
• 🚫 Find the “Unblock” button or uncheck the “Blacklist” box».

This method is convenient because it does not require deep immersion in the system menus, it is ideal for situations where the lock was random and perfect on the go.

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The fastest way to unlock a contact is to find it in the phone book and remove the lock switch right in the subscriber profile.

Operator-level locking: how to remove

Sometimes users are faced with a situation where the smartphone settings are clean, but the calls still do not pass, in which case the lock can be set on the mobile operator side, a separate service that is often called Antispam or Blacklist.

To check and remove such a lock, you must use USSD-Teams or personal account of the operator. Teams differ for different operators (MTS, Beeline, MegaFon, Tele2), There is no universal code.

Usually, management is carried out through a personal account on the operator's website or in the mobile application. In the "Services" section, you need to find activated spam protection options and disable the lock of a particular number or the entire service.

⚠️ Attention: Operator-level lock service is often paid. When disconnected, make sure you do not disable other important services, and check the tariff terms.

If you can't find settings in the app, call your carrier's support team, and the operator can check if your number has a Parental Control or Inbox Ban service that can mimic blacklisting.

Unblocking Problems and Their Solutions

Even following the instructions, you may encounter technical difficulties, such as the unlock button may be inactive, or the number may return to the lock list after the reboot, indicating a conflict of programs or the presence of third-party software.

A common cause of problems are third-party call apps or number detectors (like Truecaller, Yandex with Alice) that have their own spam databases, which can intercept call management and ignore Android system settings.

In such cases, you need to go to the settings of a particular detector application and check its blacklist separately, often there is the "culprit" of silence, and it is worth checking the permissions of the Phone application in the system settings.

• 📱 Check the settings of third-party number detectors and their internal lock lists.
• 🔄 Clear the cache of the Phone and Contacts app through the Apps menu».
• 🔌 Make sure that SIM-The card is properly installed and has no physical damage to the contacts.

If nothing helps, reset your call settings. To do this, enter the code ##4636### in the dial menu (does not work on all firmware) or simply reset the network settings in the Settings menu → Connections and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.

Frequently Asked Questions (FAQ)