How to block calls from unknown numbers on Xiaomi Android

Xiaomi smartphone owners often face intrusive calls through instant messengers. Especially annoying when they call from unknown numbers, interrupting important business or rest. Viber has powerful functionality that allows you to weed out unwanted contacts, but not all users know where the right switches are hiding.

On Android, especially with its MIUI or HyperOS branded operating system, privacy settings have their own peculiarities: blocking calls from strangers is not just a convenience, but a necessary measure of digital hygiene, and you can safely use communication without fear of sudden intrusions into your personal space.

In this article, we will take a closer look at the algorithm that will help you isolate yourself from spam. We will look at the regular tools of the messenger itself, as well as the system limitations of Android that can affect the operation of notifications.

Setting up privacy mode in the Viber application

The primary and most effective tool is the built-in functionality of the messenger itself, and the developers have a special mode that automatically ignores incoming calls from people not saved in your phone book, and to activate this feature, you need to go to the application settings menu.

Open Viber and click on the "More" icon in the lower right corner. Next, select Settings, then go to Privacy. This is where the key controls for accessing your number are located. Find the "Privacy Mode" switch and activate it.

• 📱 Click on the menu icon in the bottom panel of the application.
• 🔒 Select the “Privacy” section in the list of options.
• 🚫 Activate the slider "Privacy Mode».
• ✅ Confirm the action if the system requests permission.

Once this option is enabled, all calls from subscribers who are not in your contacts will be automatically reset. The caller will hear the beeps, but you will not receive any notification, and the phone screen will not light up. This is the perfect solution for those who want to keep the number available only to friends and colleagues.

Use the “Do Not Disturb” feature on Xiaomi

If you need to temporarily limit incoming calls without changing the global settings of the messenger, use the Android system function. On Xiaomi smartphones, the Do Not Disturb mode works very flexibly and allows you to create exceptions for selected contacts or completely block the sounds of applications.

To activate, lower the notification curtain and find the moon icon. In the advanced settings of this mode, you can specify which apps can make sounds and which should be silent. You can set a schedule so that the phone automatically goes to quiet mode at night or during meetings.

⚠️ Note: In Do Not Disturb mode, calls may not even pass from saved contacts unless exceptions are configured. Check the list of allowed apps in the audio settings to avoid missing an important call from loved ones.

You should also look at the notification settings specifically for Viber. Go to your phone Settings, select Notifications, and find Viber's list. You can turn off the sound and vibration for incoming calls, leaving only text messages, so you can see missed calls after the fact, without being distracted in real time.

Manual locking of specific numbers

Sometimes the problem is not mass spam, but a specific intrusive subscriber, so there's no point in having a general privacy mode, just adding the intruder to a blacklist, and that action will block not only the calls, but any text messages from the user.

Open the dialog with the unwanted contact or find it in the chat list. Click on the person at the top of the screen to open the profile. Scroll down to the bottom of the page and select Block. The system will warn you of the consequences of this action.

Once blocked, the user will not be able to see your online status or the time of the last visit, and will look like an inaccessible subscriber, and if you decide to unblock the contact, the history of the correspondence that was conducted before the blocking will not be restored, so it is worth taking screenshots of important information in advance.

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Periodically check the list of blocked numbers in the Viber settings. Sometimes the right people accidentally get there, and they need to be unlocked to restore communication.

System restrictions and access rights to MIUI

MIUI is known for its aggressive work with background processes and battery savings, and sometimes it happens that the privacy settings in Viber itself are enabled, but calls still pass or do not pass from anyone, and this may be due to system access restrictions.

Check if the app has the necessary permissions. Go to Settings → Apps → All apps → find Viber → Permissions. Make sure that access to microphone, contacts and phone is allowed. Without these rights, the messenger will not be able to properly filter incoming calls.

It's also important to set up the battery. In Battery and Performance, find Viber and set the "No Limits" mode. If the system strangles the application to save energy, the call filtering mechanism may not work properly.

Hiding Online Status and Visit Time

While this doesn't directly block calls, hiding your online presence reduces the likelihood of spammers or intrusive acquaintances calling you. If a subscriber sees you're online, they're tempted to call right now. By hiding your status, you become less visible.

In the same Privacy section, find the item “Show status online” and select “Nobody” or “My contacts” as well as the time of your last visit, which will create an additional barrier to unwanted attention.

Keep in mind that if you hide your status, you may not be able to see other users’ statuses (depending on the application version and server settings), a two-way anonymity feature that helps keep distance.

⚠️ Warning: Completely concealing your online status can make it difficult for corporate chat rooms where colleagues focus on employee availability.

Third-party applications for call filtering

If there's not enough built-in tools, you can use specialized software. There are many number detectors and blockers in the Play Market, such as Truecaller or GetContact, that use huge databases to identify spam.

These apps can work in conjunction with Viber, marking suspicious numbers before the call, but keep in mind that they require access to your entire phone book and call history to work, which raises privacy concerns.

When installing such programs, read the agreements carefully. Often they require broad access rights, which on Xiaomi devices can conflict with security. Use only proven applications with high ratings and a lot of downloads.

Frequently Asked Questions (FAQ)

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The comprehensive use of privacy mode in Viber and system settings MIUI gives maximum protection against unwanted calls, allowing you to fully control your digital peace.