Owners of budget smartphones often face intrusive calls from advertising agencies or scammers. For users of the Xiaomi Redmi 7A model, the issue of limiting incoming connections becomes especially relevant due to the features of the MIUI interface. Not everyone knows that the built-in functionality of the device allows you to effectively manage the list of unwanted contacts without installing additional software. This is a basic level of protection that must be configured by each owner of the gadget.
The procedure for adding a subscriber to the blacklist can vary depending on the version of the Android operating system and the MIUI shell. In this article, we will look at all the available methods, from standard phone settings to the use of third-party utilities. It is important to understand that the correct configuration of call filtering will save your nerves and time.
We will take a detailed look at the algorithm for blocking specific numbers, hidden calls and entire subscriber groups, and will also touch on the nuances of the work of antivirus databases and cloud services of Xiaomi, you will learn to fully control who can reach you.
Use of the built-in blacklist in MIUI
The easiest and most reliable way to use native functionality is to use the system, which is the system application Security on Xiaomi Redmi 7A smartphones, which is deeply integrated into the shell and does not require permissions to work, accessed through the settings menu or a separate icon on the desktop.
To get started, you need to open the Security app and find the partition that's responsible for blocking, and in different versions of the firmware it can be called Antispam or Blacklist, and it stores the database of all prohibited contacts, and the system automatically checks the incoming call against this list and interrupts the connection if the number matches.
Adding a number takes a few clicks, you can manually enter a combination of numbers or select a contact from the phone book, and there is also a feature to block recent calls, which is convenient if you just got a call from an unwanted caller.
💡
Check the log of blocked calls in the Security app regularly to make sure the system is working correctly and does not miss important calls from delivery services or couriers.
Importantly, the blacklist in MIUI works at the system level, not the SIM card.This means that the caller will hear the beeps or reset, but will not receive a notification that it is locked.For the Redmi 7A user, this is the most energy-efficient option, not a loading processor.
Blocking through call log and contacts
There's a faster method that doesn't require a deep dive into the settings menu, and if you just get an unwanted call, you can block it right from your connection history, which takes a few seconds and is ideal for responding to spam quickly.
The algorithm is simple: Open the standard Phone app (green handset) and go to the Recent tab. Find the number you want to block on the list. Click on it or the information icon (the letter "i" in the circle) next to the number.
In the action menu that opens, select "Block"; the system can request confirmation of the action, and then the number instantly enters the ban base; similarly, you can do through the "Contacts" app by opening the card of a particular person.
effluent-->
Keep in mind that when you block a call log, you limit only voice calls. SMS-It is better to use the advanced settings in the Security application, this ensures that you do not receive any notifications from this sender.
Filtering Unknown and Hidden Numbers
A separate category of problems are calls from unknown numbers or when a subscriber hides his ID. Fraudsters often use spoofing technology to bypass simple blacklists, in which cases more aggressive filtering settings are required.
The security settings on the Xiaomi Redmi 7A include a lock option for all unknown numbers, which you activate, and you will not allow any calls that are not in your phone book to pass, a radical but effective method for those who only expect calls from friends.
Hidden number blocking is also available, which is useful if you get frequent calls from organizations that hide your number, but beware: some important services (banks, clinics) may call from hidden numbers, and you risk missing a critical call.
⚠️ Note: By enabling locking all unknown numbers, you can miss a call from a courier or taxi if their number is not saved in contacts.
To set these parameters, go to Security Settings, then select Antispam and Lock Settings, and you can activate the Block Unknown Numbers and Lock Hidden Numbers switches, and the system will warn you of the consequences before activating.
Use of operator codes to block
In addition to the smartphone, you can block calls at the network level of the carrier, which is good because the call does not even reach your device, saving Redmi battery power. 7A. Operators provide USSD-Teams or services to manage a blacklist.
Each operator has its own commands, for example, to activate the service "Blacklist" often requires sending USSD-query. Once activated, you can add numbers through the operator menu or special commands. Information about incoming blocked calls can come in the form of SMS-report.
Below is a table with popular commands for the main operators (the relevance of commands may change, check with the operator):
| Operator. | Activation command | Addition command | Cost of service |
|---|---|---|---|
| MTS | *111*442# | *111*442*1*number# | Paid (there is a test period) |
| Beeline | *110*771# | *110*771*number# | Paid (subscription fee) |
| Megaphone | *130# | Through an LC or an application | Paid (there are free options) |
| Tele2 | *155*611# | *155*611*number# | Paid. |
The advantage of using network services is that the lock list is tied to the SIM card, and if you move the SIM card to another phone, the lock will remain, but operators often charge a monthly fee for such services, unlike the free features of Xiaomi.
Third-party applications for spam protection
If there's not enough built-in tools, you can turn to third-party developers, and app stores offer a lot of tools that use crowdsourcing databases, and they tag calls from telemarketers, banks, and scammers in real time.
Popular apps like Truecaller, Getcontact, or Yandex.Phone have huge number databases, can identify callers even if they're not in your contacts, and when you install them on Redmi 7A, make sure you have the necessary permissions to access your calls and contacts.
- 📱 Truecaller, the world leader in number definition, has the largest database of spam numbers.
- 📞 Getcontact – allows you to see how your number is recorded by other people, and has a function of spam protection.
- 🛡️ Yandex.Phone – works well in the CIS, defines organizations and has a built-in determinant.
Installing a third-party determinant can affect the autonomy of the Xiaomi Redmi 7A, as the app constantly monitors incoming calls, and you give developers access to your phone book, which is a matter of personal digital hygiene.
Risks of using third-party determinants
Problem Solving and Frequent Errors
Sometimes users are faced with a situation where the locked number continues to call, this can be due to the update of the phone application or failures in the MIUI system.
Another reason could be that callers use different numbers, and scammers often change SIM cards, which can only help with installing applications with dynamic databases or completely blocking all unknown numbers, and also check if Do Not Disturb mode is on, which can conflict with the blacklist settings.
If you upgraded your firmware, your lock settings might reset. After each major Android or MIUI update, it's recommended to recheck the Security section. Make sure all the necessary switches are activated.
⚠️ Attention: Locking a number does not mean that the caller will not be able to leave a voice message if you have an autoresponder function enabled from the operator.
In some cases, cleaning the cache of the Phone and Security app helps. To do this, go to Settings → Apps → All apps, find the right app, and select Clear Cache. This will not delete your contacts, but can fix software errors.
💡
Comprehensive protection is achieved by combining the built-in MIUI blacklist and the careful use of third-party spam databases.