How to Add a Phone Number to the Blacklist on Xiaomi: All Ways

Spam calls, annoying promotional messages or unwanted contacts can make smartphone use a nightmare. Xiaomi, Redmi and POCO device owners have built-in tools to block such numbers, but not everyone knows how to use them effectively. In this article, we will discuss all the current ways to add numbers to the blacklist, from standard MIUI features to hidden features that are not written about in the official instructions.

The feature of MIUI firmware is that the lock interface can vary depending on the version (12, 13 or 14) and the model of the smartphone. We took these nuances into account and prepared universal solutions that work on most devices, including the latest flagships like Xiaomi 14 Ultra and budget models of the Redmi Note 13 series. You will also learn how to circumvent operator restrictions if the standard lock does not work, and what to do if the number continues to bother you even after you add to the blacklist.

Method 1: Locking through the call log (the fastest method)

If you need to block a number immediately after another spam call, it will take no more than 10 seconds. It works on all versions of MIUI and does not require additional settings.

1. Open the Phone app (the tube icon on the home screen).
2. Go to the magazine tab (watch icon in the bottom menu).
3. Find the number you want to block in the list and tap it.
4. In the contact card that opens, click on three vertical points (⋮) top-right.
5. Select Block Number (or Blacklist in older versions of MIUI).
6. Confirm the action by pressing OK in the window that appears.

✅ The method is used to block incoming calls and SMS Minus: If the contact is not saved in the phone book, you will have to manually search for it among all incoming/outgoing calls.

Number not stored in contacts as important |

There are no duplicates of this issue in the journal |

You have blacklist sync enabled with your Xiaomi account (if necessary)|

Operator settings are checked (some people automatically block spam)-->

Method 2: Manual addition via blacklist settings

If you want to block a number that has not yet been called (for example, from the SMS-Spam or recommendation, use this method, and it allows you to add numbers manually, even if they're not in the call log.

• 📱 Open the Phone app and go to Contacts (the icon of the man at the bottom).
• 🔍 Slip on three horizontal lines (☰) In the upper left corner, select the Black List.
• ➕ Press the badge. + top-right.
• 📝 Enter the phone number manually (with country code, for example, +79123456789) or select from the contacts.
• 🔒 Confirm the addition by clicking Ready.

An important nuance: if you enter a number manually, make sure it is listed in an international format (plus), otherwise the lock may not work for calls with other prefixes (e.g. 8 instead of +7).

💡

To quickly copy a number from an SMS, press the text of the message and select Copy the number. Then blacklist it through the clipboard.

Method 3: Blocking through Messages (SMS)

Spam messages often come from virtual numbers that are difficult to block through a call log. MIUI has a separate mechanism for filtering SMS that works independently of the call lock.

1. Open the Messages app (an envelope icon).
2. Find a dialogue with an unwanted number and tap it.
3. Press three points (⋮) top-right.
4. Choose Block. → Lock the room.
5. Confirm the action by ticking next to Block Messages and Block Calls (optional).

MIUI 14 has an automatic keyword spam filtering feature. To enable it, go to Message Settings → Spam Filter → Automatic Filtering and add words like “winning”, “credit”, “free” to the blacklist.

Daily |

Several times a week |

Abruptly, 1-2 times a month |

Never.-->

Method 4: Use the Security App (for advanced users)

MIUI has a hidden Security app that offers advanced lock settings, which allows you not only to add numbers to the blacklist, but also to set rules for unknown calls.

• 🛡️ Open the Security app (if it is not on the home screen, search through the system search).
• 📞 Go to the section "Call Lock" or "Black List" (the name may vary).
• 🔄 Turn on the switch to Lock Unknown Numbers if you want to automatically screen out calls from unidentified numbers.
• ➕ Add numbers manually or import them from the call log.

⚠️ Warning: Unknown number blocking may miss important calls (e.g. from courier services or banks) Use it carefully or configure exceptions in the White List section.

Method 5: Blocking through Google Contacts (for synchronized accounts)

If you use Google Contacts for sync, you can lock the number directly through the web version. This is convenient when you don't have a smartphone at hand, but you have access to a computer.

1. Open your browser and go to contacts.google.com.
2. Sign in to your Google account that is linked to your phone.
3. Find the contact you want to block or create a new one with an unwanted number.
4. Open the contact card and press More (⋮) → Lock the room.
5. Confirm lock. Changes sync with the phone for 5-10 minutes.

🔹 Advantage: the lock will work on all devices where you are logged in to this Google account (including other smartphones and tablets).The disadvantage is that not all spam numbers are saved in contacts, so the method is more suitable for blocking familiar but unwanted contacts.

Method 6: Third-party applications for blocking (Truecaller, Hiya, Should I Answer?)

If you don't like the built-in MIUI tools, you can install specialized applications that offer advanced features like:

• 🌍 Global spammer database (automatic blocking of known scammers).
• 📊 Call statistics (how many times the blocked number called).
• 🔍 Number identification (indicates who is calling, even if the contact is not saved).
• 📵 Blocking by keywords (e.g., “credit”, “debt”, “winning»).

Top.-3 apps:

1. Truecaller is the most popular, but requires registration and access to contacts.
2. Hiya is lightweight, no advertising, with a good spammer base.
3. Should I Answer? is a minimalist, offline.

⚠️ Warning: Check the permissions of the application before installing. Some calls (such as Truecaller) request access to the Call Log, SMS If you're embarrassed, use Hiya, which works without full access to personal data.

💡

Third-party applications may conflict with the built-in MIUI lock. If the blacklist system settings stop working after installation, disable duplicate functions in third-party software.

Frequent problems and their solutions

Even after being blacklisted, some numbers keep calling, and let's look at the typical causes and ways to fix them.

Problem 1: The number is called from different identifiers

Spammers often use spoofing when the same subscriber calls from different combinations of numbers (e.g. +79123456789, +79123456780, +79123456781).

• Use regular expressions in apps like Truecaller (e.g. locking all numbers with the prefix +7912345*).
• Add a number range to the blacklist through the Hiya app (Blocking by Template function).
• Complain to the operator – some providers (e.g. Tele2) block such numbers at the network level.

Problem 2: Lock is reset after MIUI update

After major system updates (e.g., from MIUI 13 to MIUI 14), the blacklist settings may reset.

• 🔄 Enable blacklist synchronization with Xiaomi account in phone settings (Settings) → Accounts. → Xiaomi → Synchronization).
• 📱 Export the list of blocked numbers to the file (via the Contacts app» → Blacklist. → Exports).
• 🔄 Before updating, make a backup through Settings → The phone. → Backup.

Problem 3: The number is blocked, but SMS is coming

In MIUI, call blocking and SMS are set up separately, and if you add a number through a call log, it can continue to send messages.

1. Open the Messages app.
2. Find a dialogue with an unwanted number.
3. Tap it on three points (⋮) → Lock down → Check both points (Calls and Messages).

FAQ: Answers to Frequent Questions