Modern Xiaomi smartphones running under the control of shells MIUI or the new HyperOS, offering users a wide range of communication capabilities, one of which is VoLTE (Voice over) technology. LTE), It allows voice calls to be made over a fourth-generation network, despite the obvious advantages of being a voice caller. HD-While using the Internet at the same time, many users are faced with the need to deactivate this option. from unstable network operation in a particular region to the desire to save battery power or simply return the usual interface of the communication status.
The process of disabling can vary depending on the device model, firmware version and settings of your mobile operator. In some cases, a standard switch may not be in the settings menu, which requires addressing deeper system parameters. Disabling VoLTE on Xiaomi often requires activating a hidden engineering menu through special code that is not displayed in the standard interface. Understanding these nuances will help you avoid unnecessary errors and properly configure the communication module of your gadget.
In this article, we will discuss in detail all the available ways to control this function, we will consider the standard methods, work with the engineering menu, and also touch on issues related to compatibility. SIM-It's important to be careful, because changing the parameters of the radio module affects the basic functionality of the phone.
Why users are turning off VoLTE on Xiaomi smartphones
The decision to deactivate Voice over LTE is often driven by practical considerations. Many subscribers notice that in areas of uncertain reception of the 4G signal, the phone begins to lose network or voice calls become intermittent. In such situations, the forced transition to 2G or 3G networks provides more stable, albeit and less high-quality communication. In addition, some users prefer the classic display of network icons without the unnecessary indicators of "HD" or "VoLTE" in the status bar.
Another important aspect is carrier compatibility: not all mobile operators support this technology correctly at all tariffs; there are cases when the feature on leads to double-debiting minutes or the inability to make a call; also the impact on autonomy is worth mentioning: constant search and retention of an LTE signal for voice communication can consume more power than working on standard networks.
There is also a category of users who are just used to certain device behaviors, and for them, switching to new call technology can be unusual, especially if there are delays when switching between 4G and 3G during a call, and in such cases, returning to factory communication settings seems the most logical solution.
- 📉 Unstable signal 4G in the region of residence, leading to call interruptions.
- 🔋 The desire to reduce the power consumption of the radio module and extend the battery life.
- 📡 Roaming problems or specific requirements of the operator.
- 👁️ Aesthetic Preference: Removing Excess Icons from the Status Line.
Standard Disconnection Method through MIUI and HyperOS Settings
The first and most obvious way to control voice calls is to use the standard interface of the operating system. POCO Developers have put a switch in the settings menu SIM-This method is safe and requires no special knowledge, but its availability depends on the policy of your mobile operator and the region in which the device was purchased.
To check the availability of the standard method, you need to go to the Settings section, then select the item SIM-Maps and mobile networks. You should choose active networks. SIM-If you have two cards, you'll need to look for a switch that's called "Use VoLTE" or "Calls on" in the menu that opens. LTE". If the switch is present and active, you can simply put it in an inactive state. HD Or VoLTE should disappear from the status bar.
Importantly, in global firmware versions, this item is often hidden if the operator has not certified the function. In Chinese shell versions, access to settings can be more open. If you do not find the switch, this does not mean that the function is disabled; it can operate automatically at the operator level, and other methods will be required to force it to turn off.
☑️ Checking standard settings
Note that after the system upgrade to HyperOS, the menu structure may have changed, some items have been renamed or moved to the Mobile Network subsection. If the standard path did not lead to the result, do not despair, as the system may hide this option intentionally.
Using an engineering menu to manage network functions
When standard settings don't provide the necessary control, an engineering menu comes to the rescue, a hidden interface designed for hardware testing and diagnostics that allows accessing the depth parameters of the radio module. To access it, Xiaomi devices use a special code entered in the Phone application.
Dial the combination ##4636## If the code is correct, the "Verify" menu will open immediately. You will select "Phone Information" from the settings that open the "Set Preferred Network Type" setting. In this drop-down list, you can select a mode that does not support VoLTE, for example, "LTE Only" (though it will shut down incoming incoming incoming) 2G/3G) or vice versa, "WCDMA/GSM", That's why I'm forced to transfer the phone to 3G. However, for a point-to-point disabling of VoLTE in new versions of Android, this method may be limited.
⚠️ Warning: Changing the settings in the engineering menu can lead to temporary loss of communication or unstable operation of the phone.Write down the initial values before making changes so you can return everything as it was.
There is also a code ##86583## that is specifically designed to hide or display the VoLTE switch in the settings, and entering this code causes a pop-up notification to "Remote VoLTE switch disabled" (or enabled). SIM-The right switchboard can appear or disappear, and this is one of the most effective ways for users who want to manage the function with regular means, but do not see the option.
| Command (code) | Appointment | The outcome of action |
|---|---|---|
| ##4636## | Opening of the test menu | Access to phone information and network settings |
| ##86583## | VoLTE Visibility Switch | Shows or hides the VoLTE switch in the settings |
| ##868546## | Alternative switch | Duplicate command for control of visibility of function |
What do I do if the codes don't work?
Hidden settings via Activity Launcher and ADB
If the codes don't work, you can use more advanced methods, such as running hidden system activities, and this will require a third-party application, such as Activity Launcher, which allows you to see all the components registered in the system, including those that do not have an interface.
An even more powerful tool is ADB (Android Debug Bridge) debugging, which requires connecting your smartphone to your computer and having an SDK Platform Tools installed. With ADB commands, you can change the global settings of the system. For example, a command to change the settings of a carrier config can force the function to disable. However, the syntax of commands can vary depending on the processor model (Snapdragon or MediaTek) and the Android version.
For users who are not afraid of the command line, this method provides maximum control. But it is worth remembering that incorrect use of ADB can lead to software failures. Before executing any commands, it is strongly recommended to make a full backup of the data.
- 📱 Install Activity Launcher to find hidden menus.
- 💻 Prepare a PC with drivers installed ADB and USB-cable.
- 🔧 Enable the Developer Mode and Debugging by USB smartphone.
- ⚙️ Use commands to change carrier config (requires precise syntax knowledge).
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Before using ADB, make sure that your computer has the latest drivers for Xiaomi device installed, otherwise the computer will not see the smartphone in debugging mode.
The influence of the operator and SIM-card on the work of VoLTE
Often the problem is not with the phone settings, but with the operator's network configuration. VoLTE only works if the service provider supports it. The operator sends a special profile to the phone that activates the relevant features. If the profile is not loaded or outdated, the function can behave unpredictable.
In some cases, replacement SIM-New cards issued according to standards USIM, It solves problems with display and function. SIM-Maps may not interact with modern networks 4G/5G. It is also worth checking whether the VoLTE service is connected on the operator side, as on some tariffs it can be disabled by default or require a separate activation through the personal account.
Regional features also play a role: Firmware purchased in China may have different network frequency and priority settings than the global version. This can lead to the phone persistently trying to use VoLTE where the network is not yet ready, causing disruptions. Changing the region in the phone settings (via the Service and Feedback app) sometimes helps to restructure the logic of the network module.
⚠️ Note: If your carrier does not officially support VoLTE, forcing this feature to be enabled via the engineering menu may result in you being unable to make or receive calls until you return the settings back.
Possible problems after disconnection and how to solve them
Once you turn off VoLTE, you may notice a change in the behavior of the device. First, during a conversation, the network icon can change from 4G/LTE to 3G/H+ or even E/2G. This is normal behavior, since voice calls now go through classic channels. The Internet at the time of a call can slow down or temporarily interrupt if the phone switches to a 2G network that does not support simultaneous voice and data.
Sometimes users are faced with a situation when the function turns on itself after a reboot, this can be caused by an update to the operator's settings (Carrier Settings Update). In this case, it is worth checking whether the tick is not worth automatically updating the network configuration in the settings. SIM-map.
If the phone stopped seeing the network or constantly writes "No Network", you need to reset the network settings. This will return all the parameters of the radio module to factory values, which often resolves software conflicts. The path to reset is usually located in the Settings menu → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.
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Network reset is a universal solution to many communication problems that are secure for your personal data (photos, contacts), but will require re-entering passwords from Wi-Fi.