How to block unwanted calls on your Android phone Xiaomi

Spam and intrusive calls from advertising agencies or scammers have become a real scourge for smartphone owners. Xiaomi users running the MIUI shell or the new HyperOS face this problem daily, as their contacts often end up in telemarketers' databases. The constant ringing of the phone is not only annoying, but also distracting from important affairs, disturbing peace and can lead to financial losses if you accidentally contact scammers.

Fortunately, Redmi and POCO have powerful incoming traffic filtering tools that don’t require third-party software. The company’s engineers’ security system allows you to flexibly configure locking rules, create blacklists, and even hide your number when outgoing calls. Understanding how to properly lock a number on Xiaomi will help you regain control of your device.

In this article, we will take a look at all available methods of protection against spam, we will look at the regular system tools, contact management and specific settings, which are often hidden in the depths of the menu, you will learn how to effectively manage the blocking list and protect yourself from unwanted communication.

Using Xiaomi’s built-in security system

The main tool for combating unwanted subscribers in Xiaomi smartphones is the Security app, which is a system component that cannot be removed, and it has enhanced functionality compared to the standard “ringer” of pure Android, and this is where the main filtering settings are concentrated, which are activated immediately after the device is first turned on.

To access the settings, you need to run the Security app (green zipper icon). In the menu you should find the Antispam or Lock section. Here the user sees statistics of blocked calls and SMS, and also has access to the blacklist settings. The system allows you to block not only specific numbers, but also entire groups, for example, hide calls from unknown numbers or hidden IDs.

⚠️ Warning: When activating the All Unknown Numbers lock function, be careful.You may miss an important call from a courier, doctor or emergency officer if they are not in your phone book.

Within the anti-spam menu, you can set automatic rules, such as preventing calls from numbers starting with specific city codes, or blocking all international calls if you don't expect calls from abroad, especially when phone scammers are active.

Set up a blacklist through the Phone app

The standard Phone (green handset) app provides faster access to lock management, and unlike the security menu, you can quickly add a number to a blacklist immediately after a missed or incoming call, which is convenient when you need to quickly respond to repeated spam.

To add a number to the blacklist through the call log, follow the following steps:

• 📞 Open the Phone app and go to the Journal or Recent tab».
• 🛑 Click on the “i” icon (information) or arrow next to the number you want to block.
• 🚫 In the menu that opens, select the option “Block” or “Add to the blacklist».
• ✅ Confirm the action in the pop-up window.

After that, the caller will no longer be able to reach you, and when you try to call, they will hear beeps or a message that the caller is busy, depending on the operator's settings.

You can also manually blacklist a number through the app's settings. To do this, open the menu (three dots or bars in the corner of the screen), select Settings, then Locked Numbers, and click Add. Here you can manually enter a number, select from contacts, or from call history. This is useful if you have a list of spam numbers coming from, but they haven't called you yet.

Advanced settings and hidden MIUI capabilities

MIUI is known for its deep customization capabilities, and call settings are no exception. There are a number of options that allow you to fine-tune the behavior of a smartphone when incoming calls. One of these options is Do Not Disturb Mode (DND), which is often confused with a blacklist, but it works differently.

In Do Not Disturb mode, the phone does not ring or vibrate, but calls are logged as missed. In the blacklist, the call is simply reset or blocked at the network level (depending on the method). To access advanced settings, go to Settings → Apps → Phone → Lock. Here you can turn on the “Block Hidden Numbers” feature, which is relevant for those who are often called by anonymous people.

Special attention should be paid to spam recognition. In some regions and firmware versions, Xiaomi works integration with databases that mark incoming calls as “Advertising”, “Delivery” or “Fraudsters.” To activate this feature, find the “Number Recognition” switch in the “Antispam” menu and update the databases, which will allow you to see the type of caller before the beep.

Blocking through contacts and third-party apps

If standard methods are not enough, you can use the capabilities of the phone book itself, you can find the number you want in the contact list, open the card, and select "Block" from the menu (three dots), which is a good way to do this because the number is marked with a special icon, and you can visually see who is in the ignorant.

However, MIUI is sometimes not as functional as it is, especially if spam attacks come from different numbers (spoofing), and in such cases, experts recommend using third-party applications such as Truecaller, NumBuster or Kaspersky Who Calls. These applications have huge crowdsourcing databases where users themselves enter the numbers of the scammers.

When you install this app, the system will ask for permissions to access calls and contacts, and once set up, it will automatically detect and reset calls from its databases, and only use the verified software from the official Google Play store.

How to hide your number when calling Xiaomi

Often users are interested not only incoming protection, but also in hiding their number when outgoing calls. This can be useful for maintaining anonymity when calling ads or strangers. On Xiaomi smartphones, this feature can be activated through an engineering menu or network settings.

The easiest way to do this is to use USSD-For most Big Four operators in Russia and CIS, the code #31# is dialed before the phone number (e.g., #31#79001234567). To hide the number permanently (constantly), you need to enter the code #31# and press the call button#.

An alternative way through smartphone settings:

1. Open the phone app.
2. Click on three dots (menu) and select Settings.
3. Go to the “Accounts” or “Additional Settings” section.
4. Choose. SIM-card for which you need to hide the number.
5. Find the item "Show the number" (Caller) ID) and select "Hide the number».

It is worth noting that the carrier can prohibit this feature at the network level, so the phone settings may not work without connecting the service.

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Use the #31# code before dialing for one-time anonymity, which is faster than trying to get into the settings every time.

Frequently Asked Questions (FAQ)

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The integrated use of built-in blacklist and third-party databases provides maximum protection against phone spam and scammers.