How to block the phone number on Xiaomi Redmi: the full guide

Constant calls from intrusive advertising agents, bank collectors or just unwanted interlocutors can unbalance any smartphone owner. Owners of Xiaomi and Redmi devices often face the need to quickly limit access to certain contacts to themselves, but do not always know where exactly the desired functions are hidden in the shell of MIUI or HyperOS. Fortunately, Android provides powerful tools to filter incoming calls right out of the box, without requiring the installation of third-party software.

In this article, we will take a look at all the ways you can block your phone number so you don’t call using the standard tools of your Xiaomi Redmi. You will learn about the intricacies of the Blacklist, methods of blocking hidden numbers and ways to completely silence when you really need it.

Use of the built-in Blacklist in the Phone app

The easiest and most effective method is to use the regular call functionality, which is pre-installed on all Xiaomi devices, which is integrated deep into the system, which ensures its stable operation and minimal battery consumption, and you do not need to search and download additional applications that can request unnecessary permissions or display ads.

To add a contact to the blacklist, open the standard Phone app and go to the call history tab or the contact list. Find the number you want to block and click on it to open the detailed menu. The window that appears often features a "Block" button or a crossed-out circle icon that will instantly put the subscriber in the ignored list.

If you don't have a direct button, you can use the settings menu of the call itself. Click on the three dots in the corner of the screen or the gear icon to get into the Settings section. Here you are interested in Locking, which will give you access to full control of the list of prohibited numbers. In this menu, you can manually enter numbers, add them from the history or remove them from the list if the situation changes.

⚠️ Note: When blocked through the standard menu, the call from the blacklisted subscriber will be reset automatically. The caller may hear short beeps or a message that the subscriber is busy, depending on the settings of your carrier.

The MIUI blacklist feature allows you to flexibly adjust your response to incoming calls, so you can choose whether to log blocked calls or hide them completely, which is especially useful if you want to not only limit contact, but also protect yourself from possible psychological pressures without even seeing attempts to communicate.

Setup lock through the Security app

Xiaomi Redmi has a separate system application called Security that combines antivirus, memory cleanup and spam protection tools, and it is here that the most advanced filtering settings are located, allowing you to block not only specific numbers, but also entire categories of callers.

Run the Security app and find the Blacklist in the tool list. The interface here is more informative than a simple call. You will see tabs for blocked calls and SMS messages. By clicking on the gear icon or menu in the corner, you will be taken to the settings where you can activate the lock by keywords or number prefixes.

One of the most useful features is the ability to block hidden numbers and numbers that are not saved in your phone book, which is ideal for those who only expect calls from loved ones and colleagues, and all other calls will be automatically rejected by the system, giving you complete silence.

• 📞 Prefixed: Allows you to block calls from all numbers beginning with a particular combination of numbers (for example, the codes of specific cities or mobile operators).
• 🔒 Contacts Only mode: the phone will only ring for those who are recorded in your address book, the rest will receive a signal “occupied».
• 💬 SMS filter: a separately configurable block for messages containing keywords such as “credit”, “winning” or “share».

It's important to note that the settings in the Security app take precedence over the normal call settings, and if you blacklisted a number in both ways, it's guaranteed to fail, and there's a detailed log that shows who tried to reach you when, even if the call was blocked.

Blocking of hidden and unknown numbers

A special category of irritants are callers who hide their identification number, and on the screen of a smartphone they are displayed as "Unknown number" or "Hidden number." Standard methods can not block them from numbers, because there are simply no numbers. However, the shell Xiaomi offers a solution for this case.

To activate the protection against anonymous, you need to revisit the settings of the Phone or Security application. In the lock section, find a switch called “Block Hidden Numbers” or “Block Unknowns.” Activating this feature causes the system to reject any calls where Caller ID is not transmitted.

It's a nuanced feature, and on the one hand, it's a big save for scammers and overly cautious telemarketers, and on the other hand, you might miss an important call from a doctor, an emergency officer, or someone using a corporate PBX with a hidden number, so you should only turn on it when you really need it.

⚠️ Warning: Hidden number blocking can be critical in situations where you may be called from government agencies or hospitals where the number detector is often disabled by security systems.

If you have enabled this feature, but are waiting for an important call from an anonymous number (for example, a courier or a call back from the operator), temporarily turn off the filter. After the expected event, the protection can be activated again. Remember that technical tools can not distinguish between “good” and “bad” anonymous – everything is blocked every day.

Do Not Disturb as a Temporary Measure

Sometimes it's not a permanent lockdown on a particular number, but a temporary isolation from the world, and for those cases, Android and Xiaomi have a "Do Not Disturb" mode, which, unlike the blacklist, is scheduled or manually enabled, allowing only select categories of calls to be skipped.

You can activate mode via the notification panel (swipe from top to bottom) or in the Sound and Vibration settings. In the advanced Do Not Disturb settings, you can create exceptions, for example, allow repeated calls (if the same person calls a second time within 3 minutes, the system will consider it an urgent matter and miss the call).

This is the perfect method for sleeping, meeting, or movie times, and it doesn't blacklist numbers forever, it just pauses them, and all missed calls will be logged, so you won't lose anything, but the audible notifications won't bother you at the wrong time.

• 🌙 Automation: Set up schedule settings, such as 23:00 to 07:00, to sleep quietly each night.
• ⭐ Selected Contacts: Set up asterisk contact exceptions so family members can reach you even in silence mode.
• 🔁 Repeated calls: The function misses a call if the number rings again within a short period of time.

It's important to understand the difference: a blacklist works for specific numbers, and a Do Not Disturb mode is a temporary shield from everyone except the ones you choose, and using these tools in combination gives you maximum control over communication.

Third-party applications for extended filtering

Xiaomi’s regular funds are often enough, but if you encounter aggressive spam that changes numbers, specialized applications will come to the rescue. Market leaders are Getcontact, NumBuster and Kaspersky Who Calls. They use crowdsourcing, a database that is replenished by users themselves.

The main advantage of these apps is that you can see how the number is written down by other people before you even answer a call, and if the number is marked by multiple users as "Spam" or "Collectors," the app will automatically reset the call or alert you with a vibration, which is much more effective than a static blacklist.

But installing third-party software requires attention to permissions, and it requires access to your contacts and call logs to work, and by sharing that data, you're essentially adding to the commons, and weighing the risks of losing your contacts' privacy against spam protection.

When using third-party number detectors on Xiaomi, there is often a conflict: the system may try to “kill” the application’s background process to save energy. To keep the locking stable, you need to go to the battery settings, find the application and select the “No Limits” mode.

⚠️ Warning: Do not install two or more number-detection apps at the same time. They will conflict over the right to handle incoming calls, which can lead to missing important calls or the phone interface freezes.

Remote lock through the operator

If the software methods on the Redmi smartphone do not give the desired result or the phone is temporarily unavailable, you can use the services of a mobile operator. Large operators (MTS, Beeline, MegaFon, Tele2) provide services "Anti-determiner" (to hide their number) and various options of the "Black List" at the network level.

Operator-side locking means the call is cut off even before the signal reaches your phone, ensuring that the phone won't ring and vibrate at all, the service is most often paid, with a subscription fee or one-time connection fee.

It is usually enough to send the connection. USSD-You can use a command or a personal account of an operator, for example, many operators have a kind of command *111*442# (Once activated, you can manage the list of prohibited numbers through the operator menu or SMS command.

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Before you connect a paid service "Black List" from the operator, carefully study the tariff. Often the first 7-14 days are free, which allows you to test the effectiveness of the lock without financial costs.

The downside of this method is that it's cost-effective and operator-dependent, and if you change your SIM card, you'll have to reset your settings, but it's the most reliable method to deal with particularly persistent stalkers, because it's impossible to get around it with a simple change. SIM-cards in the phone (if the lock is on the phone number in the network).

Frequently Asked Questions (FAQ)

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The combination of the built-in MIUI blacklist and the schedule mode “Do Not Disturb” covers 99% of the needs of the average user in protection from calls, without requiring the installation of third-party software.