How to Unblock Contact on Xiaomi Phone: The Complete Guide

Locked contact on a Xiaomi smartphone can be a problem if you accidentally blacklist it or get a device with existing limitations. Unlike other manufacturers, Redmi, POCO and Mi phones use the branded MIUI shell, where the unlocking process has its own nuances. In this article, we will analyze all the current methods, from standard system functions to hidden features that are not written in the official documentation.

It’s important to understand that blocking contacts in Xiaomi can work on two levels: through the built-in Contacts app (locally) or through Google Contacts (synchronized with your account), which depends on which way you’re going to work. If you’re trying to unlock a number that has called you before but can’t reach you now, the problem may lie in the blacklist settings or even the MIUI security settings.

We have tested all the methods on the latest versions of MIUI 14/15 (including HyperOS for new models) and ensure that they work. If you are using a device older than 2020 (like the Redmi Note 8 Pro or Mi 9T), some menu items may be slightly different, but the logic remains the same.

1. Unlocking through the standard “Contacts” application

The most obvious way is to use Xiaomi’s built-in Contacts app, which works for local contacts that aren’t synced to Google or other services, and if you’ve locked a number manually through your phone’s interface, that’s where you’ll look for a solution.

Instructions:

• 📱 Open the Contacts app (an icon with a person’s silhouette on a green background).
• 🔍 Press three points (⋮) In the upper right corner, select the Black List.
• ❌ In the list of blocked numbers, find the contact you want and swipe it left (or click on the basket icon).
• ✅ Confirm the action in the pop-up window.

If you don’t have a Blacklist on your menu, try an alternative route:

1. Open Contacts. → Select a blocked contact.
2. Press three points (⋮) top-right.
3. Select Remove from the blacklist (if the option is active).

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If a contact is synced with Google, it can be blocked in the account. After unlocking in MIUI, check the settings of Google Contacts (more on this below).

An important nuance: some versions of MIUI (like the POCO F5 or Redmi Note 12) have a blacklist hidden in the security settings, so if you don't find it in the contacts, move on to the next section.

2. Check the blacklist in the MIUI security settings

The MIUI shell has a separate security module that stores a global blacklist for calls and messages, and this list can block numbers even if they are not displayed in the Contacts app, to check it:

Steps:

• 🔒 Go to Settings. → Annexes → Application management → All applications.
• 📞 Find the phone (or calls) in the list and open it.
• 🚫 Select the Blacklist or Number Block.
• 🔄 Remove unnecessary numbers by swipe or through the basket icon.

On some devices (such as the Xiaomi 13 Pro), the path may look like this:

Settings → Memory and applications → Application management → Phone → Blacklist

Remove the number from the blacklist in Contacts|Check the list in the phone settings|Make sure the number is not locked in security|Reboot your phone after the changes-->

Why can a number be missing from both lists? If you've used third-party blocking apps (like Truecaller or Call Blocker), they create their own databases, in which case you need to unlock directly in those programs.

3. Unblock through Google Contacts (for synchronized accounts)

If your contacts are synced to your Google account, the lock could have been applied at the level of Google services, not MIUI. This is true for users who use Gmail or Google Contacts as their main source of storage, in which case unlocking through MIUI will not help - you need to work with Google services.

How to check and unlock:

1. 🌐 Open your browser and go to Google Contacts (sign up with the same account as your phone).
2. ☁️ On the left menu, select More → Settings → Managing lockdowns.
3. 📋 View the list of blocked numbers and remove unnecessary ones.
4. 🔄 Return to your phone and update contacts (click down on the Contacts for Sync app).

Important! Google Contacts locks on all devices where you are logged in to that account. If you unlock a number on your phone but it stays blocked on Google, calls will still not go through.

Through the standard Contacts app|In the phone settings|I use Google Contacts.|Third-party applications (Truecaller et al.)-->

4.Use of the engineering menu (for experienced users)

If standard methods don’t work, you can try unlocking the number through an engineering menu (or MTK Engineer Mode for MediaTek processor devices), which is suitable for advanced users and requires caution, as incorrect actions can disrupt the phone.

Instructions for Qualcomm Snapdragon devices (e.g. POCO X5 Pro, Redmi K60):

1. 📱 Enter the phone combination in the app: ##4636##.
2. 🔧 Select Phone Information (or Phone Information).
3. 📞 Scroll down to the Call Blocking block and click View Blacklist.
4. ❌ Remove unnecessary numbers and restart the device.

For devices on MediaTek (e.g. Redmi Note 11):

• 🔧 Install the app MTK Engineering Mode from Play Market.
• 📱 Open it and move into it. MTK Settings → Connectivity → CDS Information → Radio Information.
• 📞 Choose Phone 1 (or Phone 2 for the second one) SIM) And put in a command: AT+CKPD="C",15,"{phone number}" (replace {phone number} with a locked number without +7 or 8).
• ✅ Press Send. AT Command and reboot the phone.

Attention! The engineering menu is diagnostic, and it may contain parameters that will cause the phone to run in an unstable way. Don't edit other settings unless you're sure they're there.

5. Resetting phone settings (last resort)

If all the previous methods didn't work, the last option is factory reset, which is a radical solution that will remove all data from the device, including locks, but also erase all your files, applications and settings, and only use it if:

• ❌ The number is locked at the system level and you can’t find it in the blacklists.
• 🔄 You tried all the other methods, but the calls still don't go through.
• 📱 You have a backup of your important data (or it’s synced to the cloud).

How to perform the reset:

1. 🔄 Go to Settings. → The phone. → Resetting settings.
2. 🗑️ Select to erase all data (reset to factory).
3. 🔐 Enter a password (if required) and confirm the action.
4. ⏳ Wait for the process to be completed (it will take 5-10 minutes).

Warning: Once reset, the phone will return to out of the box, you will need to reconfigure accounts, install apps, and restore data from the backup (if any).

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Resetting is a nuclear option, only use it if you are sure that the problem is not solved in other ways, and you have a backup of the data.

6. Check of locking at the level of the operator

Sometimes the problem is not with your phone, but with your mobile operator settings. Some operators (e.g. MTS, Beeline, Tele2) provide number locking services at the level of the mobile operator. SIM-If you have activated such a service (for example, through the USSD-command or personal account, unlocking must be done there.

How to check:

If you do not remember whether the operator has activated the lock service, contact support at the number listed on the official website. SIM-limit-card.

7. Alternative methods: third-party applications and ADB

If the built-in MIUI tools fail, third-party solutions are available, and we only recommend proven applications to avoid data leakage or viruses.

Top.-3 contact-free applications:

• 🛡️ Truecaller has its own blacklist, which can duplicate the system. → Locked numbers.
• 📵 Call Blocker – allows you to manage the locks separately from the MIUI. Has the function of export/import lists.
• 🔍 Blacklist Plus – Supports massive unlocking and rule backup.

For advanced users, there is another method, the Android Debug Bridge (ADB), which requires connecting the phone to your computer and enabling debugging mode, but allows you to manage locks at a low level.

A brief instruction on ADB:

1. 🖥️ Install. ADB Tools on PC and connect the phone to USB (Turn on Debugging. USB In Settings → The phone. → Version. MIUI → Click on version 7 times, then return to Additional → For developers).
2. 📌 Open the command line and type in: adb shell content query --uri content://call_log/calls (This will show your phone history, including blocked calls).
3. 🔧 To remove the lock, use: adb shell content delete --uri content://call_log/calls --where "number='{number}' (replace {number} with the desired number).

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Before using ADB, back up your data. Incorrect commands can cause your phone to malfunction.

Frequently asked questions

If none of the described methods worked, the problem may lie in the software failure of MIUI. In this case, we recommend updating the firmware to the latest version or contact the official Xiaomi service center. Remember that self-manipulation of system files (for example, through Root) can deprive you of warranty.