How to blacklist a number on Xiaomi Redmi: Instructions

Modern smartphones, such as Xiaomi and Redmi devices, are becoming the center of our digital lives, where all important notifications and calls flow. However, along with useful contacts, users often face intrusive advertising, spam or calls from unwanted interlocutors, blocking such numbers becomes a critical function for maintaining personal space and peace of mind.

The MIUI Android operating system provides built-in and flexible tools to filter incoming calls. You don’t need to install third-party apps to stop receiving calls from scammers or intrusive collectors. In this article, we’ll take a look at all the ways you can blacklist a Xiaomi Redmi number using only the regular system capabilities.

Developers are constantly improving their security algorithms, so the methods may vary slightly depending on the firmware version, but the basic principle of operation has remained unchanged over the past few years, and we will look at the current ways to solve the problem for most users.

Locking allows you to completely isolate your subscriber from contacting you, not just voice calls, but text messages, and understanding how filtering works in MIUI will help you manage your contact list effectively and avoid unnecessary stress.

There are several scenarios where immediate intervention in communication settings is required, sometimes isolated cases of harassment, sometimes a constant stream of spam. In MIUI, the lock is at the system services level, so the subscriber does not receive a notification that the call is rejected programmatically, and the signal is as if he is in a normal occupation or no response.

Standard way to block through call log

The fastest and most obvious method available to every smartphone owner is to use a call history. If you just got an unwanted call, you don't have to look for complex settings. Just open the standard Phone app, which is installed by default on all Xiaomi and Redmi devices.

Find the number you want to block in the latest call list, press it and hold your finger for one to two seconds until the context menu appears. In some versions of the MIUI shell, just click on the information icon (the letter "i" in a circle) to the right of the number.

In the menu that opens, you should select "Block" or "Add to the blacklist"**. The system will immediately confirm the action, and this subscriber will not be able to reach you again, this is the most effective way to respond to one-off incidents.

• 📞 Open the Phone app and go to the History tab.
• 🚫 Press and hold your finger on the desired number or select the information icon.
• ✅ Confirm the lock in the pop-up window.
• 🔍 Check the list of blocked in the settings if you need to make changes.

It is important to note that after blocking, the caller will hear the beeps, but you will not have your phone ringing. In the call log, you may see a record of the missed, but with a note about the lock, or the call will not appear at all, depending on the logging settings.

Set up a blacklist through the contact menu

If the number is already saved in your phone book, but communication with this person is stopped or became unpleasant, the most convenient way to use the contact menu is to block the subscriber, even if he did not call you right now, and you just want to protect yourself from future attempts to communicate.

Go to the Contacts app and find the person you want alphabetically. Open the contact card and look at the top of the screen or the bottom menu where the actions are located. There may also be a three-dot button or a gear that hides additional options.

Select the “Block” option.** After that, the contact will be marked with a special icon indicating the restriction, this action instantly synchronizes with the system call filter.In addition, you can delete the number from the phone’s memory by previously adding it to the blacklist through the lock settings, which will be discussed below.

⚠️ Warning: When you delete a contact from your phone book without first locking it, the number will disappear from memory, but calls will continue to flow from it. Always block it first, then delete it if the target is completely ignored.

Using the contact menu is especially convenient when you need to block several numbers from a saved database, for example, after a breakup or change of work, you can consistently go through the list and restrict access to all unwanted persons.

Remember that the blocked contact is still in your address book, just the calls from it are filtered, and if you decide to resume communication, you will need to unblock the same menu without entering the number again.

Using the Security app for mass blocking

The unique feature of Xiaomi and Redmi smartphones is the powerful built-in Security app. This system tool combines antivirus, memory cleanup and, importantly for our theme, an extended blacklist.

Run the Security app (green icon with shield) and find the Antispam section.** This is where all the levers of incoming traffic are concentrated, so you can not only add specific numbers manually, but also configure smart filters.

Inside the Antispam section, go to settings (usually a gear in the corner) where you can activate hidden number locks, lock all unknown numbers (those that are not in your notebook), and even lock keywords in SMS, which makes your smartphone an impregnable fortress.

The keyword blocking feature deserves special attention: you can specify words like “credit”, “win”, “promotion”, and any messages containing these terms will be automatically deleted or placed in a spam folder without disturbing you with a notification.

Configuring smart filters and operating modes

The MIUI shell allows you to flexibly customize your smartphone behavior in different situations. In the Antispam section, you can activate preset modes that can be activated with a single touch. For example, the Only of Contacts mode is useful when you are on vacation or at an important event.

You can also set up a blacklist schedule, imagine that you take any calls during the day and want silence at night, and you can set time slots in anti-spam settings when you activate Do Not Disturb or increased filtering.

For advanced users, the cloud-based update feature is available. Xiaomi periodically releases databases of phone numbers seen in the mailing of ads. Connecting this feature allows the smartphone to automatically block calls from thousands of spammers, even if you did not personally block them.

• 📅 Use a schedule to automatically lock at night.
• ☁️ Enable the upgrade of the cloud database of numbers to protect against new spammers.
• 🔇 Activate Do Not Disturb mode for complete silence at important moments.

Don't be afraid to experiment with settings, because all changes are reversible. You can always turn off any filter or delete the number from the stop list if an error occurs. The main thing is to find a balance between accessibility and peace of mind.

⚠️ Warning: Enabling the Block All Unknowns feature may cause you to miss an important call from a courier, doctor or employer whose numbers are not stored in your book.

Third-party applications for extended filtering

While Xiaomi and Redmi’s built-in tools are powerful, some users prefer third-party solutions.Apps like Truecaller, Calls Blacklist or GetContact offer advanced databases and more flexible filtering rules that can be useful in specific situations.

The main advantage of third-party apps is crowdsourcing, which is being refilled by users around the world, and if a number is labeled by thousands of people as "Crackers," the app will block it automatically before you even call.

However, installing such software requires broad permissions to access contacts and calls, which may raise questions about the privacy of your data. Xiaomi’s built-in solution is safer in this regard, as it works locally and does not transfer your phone book to third parties without your knowledge.

If you do decide to use third-party software, make sure it is compatible with your version of Android and does not conflict with the system application Phone. Often, two call filters begin to “fight” for the right to process the incoming call, which leads to crashes.

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The built-in security application in Xiaomi is the most optimal solution, since it is deeply integrated into the system, does not consume battery and does not require the installation of additional software.

Frequently Asked Questions (FAQ)