How to disable incoming calls to Xiaomi while saving mobile internet

The modern rhythm of life dictates its conditions, and often there is a paradox: you vitally need access to mobile Internet for navigators, messengers or documents, but absolutely no desire to take voice calls. Owners of Xiaomi smartphones with the shell MIUI or HyperOS often face the need to fine-tune the connection to cut off the extra without losing the online connection. Standard modes “Do not disturb” or “Air mode” is not suitable here, as they either miss calls or completely cut off the network.

Fortunately, the GSM and LTE/5G cellular architectures allow you to separate data streams and voice communications, which means you can technically deny calls to your number while keeping the GPRS/EDGE/LTE packet channel active. This article will detail all the ways you can do this on Xiaomi devices, from built-in operator functions to hidden engineering menus.

Use of the services of the communication operator for blocking

The most reliable and technically clean way to do this is to activate the Inbox Ban service directly on the cell operator side. Unlike the phone itself, this method works all the time, even if the device is off or out of coverage, but with active data roaming. For Xiaomi owners, this is ideal, since it does not require the installation of third-party software and does not consume the processor resources.

The essence of the method is that the operator network will simply not transmit an incoming call signal to your phone, which will look like the caller is constantly being told “busy” or “subscriber is unavailable”, while your smartphone will be quietly downloading files through mobile data. To activate this function, it is usually enough to send USSD-request or use of personal account.

• 📞 Send. USSD-Lock command (e.g. *43# for verification or codes for prohibition, depending on the operator).
• 🌐 Make sure that the network settings include “Data Transfer».
• 🔒 Check the redirect status so that calls don’t go to voicemail if you don’t need to.

It is important to understand that using this method you will not be able to make outgoing calls while the service is active. However, Internet traffic will be charged according to your usual tariff plan. This is the only way to guarantee 100% blocking of all incoming ones, including hidden detector numbers and emergency services (except 112), which can be critical in some situations.

⚠️ Attention: Activating a complete ban on incoming carrier-level services may be a paid service.Clarify the charging conditions with your provider before activating.

Set up a “When Occupied” redirect through codes

A more flexible tool for Xiaomi owners is to set up conditional redirects, and the logic here is to create artificially busy lines, so if you direct all incoming calls to a number that doesn't exist or is always busy, callers will hear beeps or an error message, and your phone won't even begin to vibrate, and the Internet connection will remain fully functional.

To implement this scenario, MIUI can use a standard call menu or special codes, and the most effective is to redirect calls to a non-existent number or to an immediate resetting beep service, which creates a busy effect for the caller, but does not require constant interaction with the phone.

Consider a step-by-step algorithm for customization through engineering codes that work on most Xiaomi, Redmi and Poco models:

1. Open the phone application (caller).
2. Enter *#61# and press the call button.
3. In the window that opens, you will see the number to which the redirect is going if the line is occupied.
4. To set a new number, use the command **61*number#.

Once set up, when someone tries to reach you, the carrier network redirects the call and your phone remains free to work with Wi-Fi or mobile Internet, a method that is especially useful if you need to temporarily “disappear” for everyone but stay online in work chats.

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To disable redirects and return calls to normal mode, dial the universal reset code ##002# and press the call.

Blocking through standard MIUI and HyperOS settings

Xiaomi’s shells have powerful built-in traffic filtering functionality that users often underestimate. Unlike a crude carrier lock, system methods allow you to create flexible rules. You can set your phone up to take calls from only select contacts and reset everyone else automatically, making it look like it’s out of reach for the rest of the world.

To access these settings, you need to go to the security section. In new versions of HyperOS, the path may vary slightly, but the overall menu structure is maintained. Here you can activate Do Not Disturb mode with special parameters, which will block sound and vibration, as well as reset calls from strangers.

To set up the “White List” and cut off the excess, follow the following steps:

• 🛡️ Go to Settings. → Annexes → Application settings → Phone.
• 🚫 Find the "Block" or "Antispam" item».
• ✅ Add the necessary contacts to the exceptions or turn on the “Selected Only” mode».

Using a built-in anti-spam filter allows you not only to block calls, but also to hide miss notifications if necessary.This creates a complete silence effect while you are online.

Using third-party applications for smart filtering

If Xiaomi’s built-in tools aren’t enough, Google Play’s specialized apps come to the rescue, offering more advanced algorithms such as locking on a schedule, locking all unknown numbers, or creating “blacklists” based on spam databases, running on top of a standard call and intercepting an incoming signal.

Popular solutions like Truecaller, Calls Blacklist, or Should I Answer can be set to automatically reset any incoming ones, and the advantage of this method is that you can turn on Full Insulation mode in one click, while keeping the 3G/4G data module active. Apps require permissions to manage calls, which is pretty secure in Android.

The table below compares popular locking methods for Xiaomi owners:

However, for those who need flexibility, this is the best choice: You can set up profiles that will automatically enable lock-in during business hours, leaving the internet for notifications.

⚠️ Warning: When installing applications to block calls, carefully check the permissions requested. SMS untested developers.

Flight mode with Wi-Fi enabled: nuances of work

Often users confuse the concepts and try to use Air Mode to block calls. Indeed, turning on flight mode disables all radio modules, including cellular communication, which is guaranteed to block incoming calls. However, with them, mobile Internet is also turned off. The solution lies in the hybrid use of this mode.

On Xiaomi smartphones, after you turn on "Flight Mode", you can manually activate the Wi-Fi module. In this case, the phone will be connected to a wireless network, allowing you to use messengers, mail and a browser, but the cellular network for voice calls remains disconnected. SIM-The card will not be physically delivered.

This method has its own characteristics:

• 📶 Mobile Internet (LTE/4G) It won't work, only Wi-Fi.
• 📞 Incoming calls to the SIM card are completely blocked.
• 💬 Messengers (Telegram, WhatsApp) work normally through Wi-Fi.

For many users, this is the best solution if they are in a stable Wi-Fi coverage zone: you are completely isolated from the voice noise of the cellular network, but you remain in the information field through Internet channels, and this also saves battery life, since the phone does not look for a cell tower.

Engineering menu and hidden network settings

For advanced Xiaomi users, there is an access to an engineering menu where you can manipulate network types, a risky but effective method, which is to force the phone to switch to a mode that only supports data transfer, or disable the voice domain if the operator and hardware allow such configuration.

The login to the engineering menu is via code ##4636##. Here, under Phone Information, you can try changing your preferred network type. However, modern VoLTE standards transmit voice as data packets, so complete separation may not be possible without losing both.

However, disable voice communication through settings SIM-map:

Settings → SIM- Maps and Mobile Networks → Select SIM- Cards → Disable voice communication (if available)

If you don't have this option in your version of MIUI, it won't work. The engineering menu is a powerful tool, but if you change the settings carelessly, you can lose the network altogether. Use it only if you understand what each option is responsible for.

⚠️ Warning: Changing the settings in the engineering menu (#4636###) can cause the phone to run unstable or lose communication completely!

Frequently Asked Questions (FAQ)

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The optimal solution for most users is to configure conditional redirect to a non-existent number - it is reliable, free of charge and does not require the installation of unnecessary programs.