How to disable VoLTE on Xiaomi: a complete guide for subscribers MegaFon

Modern Xiaomi smartphones, which use MIUI or HyperOS, offer a wide range of features to improve communication quality. One of these options is Voice over LTE technology, which allows voice calls over a fourth generation network. Megaphone subscribers often face a situation where this function is not working correctly: the phone loses the network, does not leave 4G during a conversation or quickly consumes battery power.

The deactivation process can vary depending on the software version and model of your device. Sometimes standard settings are hidden from the user, and you have to resort to deeper methods of system configuration. In this article, we will discuss in detail all the available solutions to the problem, from simple switches in the menu to the use of engineering code.

It’s worth noting that disabling this feature puts voice communication on standard 2G or 3G protocols. This may even be preferable in areas with unstable LTE coverage, where the phone is constantly trying to re-arrange between communication standards. Let’s look at the main reasons why Xiaomi users need to interfere with the communication module.

Why it is necessary to disable VoLTE on Xiaomi smartphones

LTE voice technology is designed to improve audio quality and speed up communication with the interlocutor. However, in practice, implementing this feature in conjunction with some Xiaomi models and MegaFon SIM cards can cause failures. An unstable signal is the first and most common reason for users to turn off the option. The phone can show the full level of the 4G signal, but incoming calls simply do not arrive or are reset.

Another important issue is the increased energy consumption. LTE-Even when you're calling voice, you're using more CPU and radio resources. If you notice that your smartphone is running out faster than usual in standby or conversation, you should check the status of VoLTE. 4G It is not perfect, and the phone is wasting its charge trying to stay on the high-speed network.

• 📉 Disappearance: Device loses registration in the operator’s network immediately after the start or end of the conversation.
• 🔋 Fast discharge: background processes of the communication module consume excess energy when active LTE.
• 🔇 Sound problems: subscribers complain of metallic sound or audio delay.

In addition, there are situations where the MegaFon SIM card itself does not support VoLTE on a particular device, although the service is formally connected. In this case, the phone can constantly switch between 4G and 3G, creating a “blink” effect of the network. Forced shutdown of VoLTE often solves the problem of “hanging” 4G when the Internet is working and you can not call.

⚠️ Note: Before making changes to your network settings, make sure you have an alternative method of communication, as when the standards are switched, the communication may be temporarily interrupted.

Understanding the reasons helps you choose the right solution, if the problem is a software conflict, a simple reset will help, and if it's hardware compatibility in your region, you'll need a deeper intervention through the engineering menu.

Basic settings SIM-map MIUI hyperos

The first step that the owner of Xiaomi should take is to check the standard settings menu. In the latest versions of shells from Xiaomi, developers often hide or, conversely, put a VoLTE switch in a prominent place. For MegaFon subscribers, it is important to check how the SIM card through which calls are made is configured.

Go to the Settings section and find the item SIM-Maps and mobile networks. This displays all the communication modules installed. Select the SIM card you want (e.g. Sim 1 Megaphone). In the menu that opens, you should look for a switch called "Use VoLTE" or "Calls on VoLTE" LTE". If such a switch is active, it must be transferred to an inactive state.

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If the VoLTE switch is gray and not pressed, it means that the operator or firmware is blocking manual control, in which case, move to the next section with the engineering menu.

Sometimes, once the function is disabled, you need to restart the device to make the changes effective. The system must re-register on the operator's network, without requesting a voice channel via LTE. In some cases, it is also useful to turn on and off the flight mode to force reconnection to the base station.

It is important to distinguish between settings for data and voice calls. Disabling VoLTE will not ban 4G Internet, it will only transfer voice to 3G or 2G. Make sure that in the preferred type of network is not limited to only 4G, otherwise the phone may not see the network for calls at all after the VoLTE disabling.

Using an Engineering Menu to Manage a Network

If the standard MIUI interface doesn't allow you to control the function, the engineering menu comes to the rescue. It's a hidden part of the system that's designed to test the hardware. To access it on a Xiaomi phone, you need to type a special code in the call app. The most universal code to access the phone settings is ##4636##.

After you dial the code, you'll see the Testing menu. You're interested in Phone information. If you have two SIM cards, select Phone information 1 or 2 depending on where the MegaFon SIM card is installed. This section provides a comprehensive list of options. Find the Set Preferred Network Type string.

Here's the key: To guarantee that VoLTE is disabled, you have to choose a type of network that doesn't support this technology. For example, choosing WCDMA preferred mode (3G only) will completely eliminate the possibility of voice calls over LTE. However, this will also turn off high-speed Internet. More fine-tuning is possible through IMS settings, but they are not available in all firmware.

Some versions of Android and HyperOS have a separate VoLTE provisioned or Enable VoLTE switch on the same menu, and unchecking this item will prevent the phone from using the IMS protocol for calls, even if the carrier provides such a service, which is the most effective method for advanced users.

⚠️ Warning: Be extremely careful in the engineering menu.Changing the parameters of the radio module that are not associated with VoLTE (for example, resetting) IMEI or frequency change, may result in complete loss of communication.

Hiding the VoLTE icon through ADB-team

Often, it's not the technology itself that's annoying, but the "HD" or "VoLTE" icon in the status bar that takes up space on the screen. If you want to keep the feature on for quality of communication, but remove the visual display, you can use the ADB (Android Debug Bridge) toolkit, which requires connecting your smartphone to your computer.

First, you need to activate developer mode on Xiaomi. Go to About Phone and press MIUI seven times. Then, in advanced settings, turn on USB Debugging. Connect the phone to your PC and open the command line with administrator rights. You will need to enter a command to change the global interface settings.

adb shell settings put global volte_icon_hide 1

This command hides the icon in most cases. However, it is worth remembering that after updating the system or resetting the setting, the parameter may return to its original value. Also, on some global Xiaomi firmware, this particular command may not work, as the manufacturer modifies the system variables, in which case you need to edit the system file build.prop, which requires root rights.

Using ADB is safe for user data, but requires careful input. An error in syntax can cause the command to simply fail. If you're not sure what you're doing, it's best to limit yourself to standard shutdown methods through the menu.

Specifics of the service MegaFon VoLTE

MegaFon is actively promoting its services, and VoLTE is often automatically connected when the SIM card is first installed in a smartphone.The service is free for most tariffs, but its work depends on support from the device. Xiaomi in its global firmware certifies many models to work with Russian operators, but sometimes there are conflicts of versions of the software.

If you have disabled VoLTE on your phone, but the icon is still there, or calls are still going through LTE, it is possible that the setting is duplicated on the operator side. In MegaFon’s personal account or in the My MegaFon application, you can check the status of the connection of the service “VoLTE”. Its disconnection on the operator side is guaranteed to prevent the phone from using this protocol, regardless of Xiaomi settings.

It is important to understand that the service shutdown from the operator can take up to 24 hours, although usually the changes take effect instantly, after which the phone will cease to register in the IMS segment of the MegaFon network and will use classic switching channels.

Impact of VoLTE Disconnection on Communication Quality and Internet

Users often wonder what will change after a shutdown? The main change will be the speed of the connection. When dialing a 4G network with VoLTE, the connection occurs in 1-2 seconds. Without VoLTE, a phone needs time to switch to 3G or 2G, which can take from 3 to 10 seconds. You will hear the beeps only after this switch.

Voice quality will also change. VoLTE uses an HD Voice codec that delivers clean, rich sound. When you switch to 3G, quality will become standard, noise may occur if 3G coverage is weak in your area. However, paradoxically, in places with poor 4G signal, communication quality after VoLTE is turned off can increase, as the phone's constant attempts to "grab" on dying 4G disappear.

As for the Internet, CSFB (Circuit Switched Fallback) technology used for calls without VoLTE, in some older implementations, could temporarily interrupt data transfer. Modern Megaphone networks and Xiaomi smartphones usually support simultaneous voice and data transfer, but Internet speed during a conversation can decrease to 3G.

So, turning off VoLTE is a trade-off: You sacrifice connection speed and maybe sound quality for the stability of the network and the battery life in specific conditions.

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