Xiaomi V0 LTE badge: appointment, activation and concealment

Users of Xiaomi, Redmi and Poco smartphones often face the appearance of incomprehensible symbols in the status bar. One of the most common issues is the appearance of the inscription V0 LTE or VoLTE next to the signal indicator of the cellular network. Many gadget owners perceive this as a system error or intrusive advertising of the operator, but the reality lies in modern voice technologies.

In fact, this icon is a sign that your device has moved to a whole new level of connectivity, so instead of switching between 4G and 3G networks when you make an incoming or outgoing call, your phone uses a high-speed LTE channel to transmit voice data, which provides crystal clear sound and allows you to talk and use the Internet at maximum speed at the same time.

In this article, we will explain the nature of this indicator in detail, the difference between V0 LTE and standard VoLTE, and provide step-by-step instructions for enabling the function through hidden menus and full ADB commands.

Technological essence of the indicator V0 LTE

V0 LTE is a specific representation of Voice over LTE technology in the MIUI or HyperOS shell. The letter "V" stands for Voice, and the letter "0" is a stylized display of the letter "o" or simply an index of the protocol version in some firmware localizations. The essence of the technology is to transmit voice traffic as data packets over a fourth-generation network, bypassing the rollback to slower 2G or 3G standards.

In the past, when a call came in on a 4G network, the smartphone would force it to switch to 3G or even 2G mode, interrupting the Internet connection. This created a delay of 2-3 seconds before the beeps and stopped the loading of pages. With the advent of V0 LTE, the phone remains on the LTE network using a dedicated channel for voice, which is especially critical for modern applications, video calls and navigation during conversation.

The sound quality of this protocol is much higher because it uses the HD Voice codec, the voice of the interlocutor becomes more natural, the effect of metallic sound that is characteristic of old networks disappears, but the function requires support from your carrier and the availability of a corresponding SIM card.

💡

If the V0 LTE icon appeared suddenly after the firmware update, it means that your carrier has added support for the technology in your region and the phone has automatically activated the feature.

Key advantages of technology for the user

Turning on V0 LTE has tangible benefits in everyday smartphone use, especially in connection stability, you no longer have to worry about the Internet falling off at an important point in the conversation, downloading files, streaming music or watching videos without interruption.

The second important aspect is the speed of connection, which is that dialing and waiting for a response is almost instantaneous, and the time between pressing the call button and the first beep is reduced to a minimum, especially when calling emergency services or if you need to quickly contact someone in a bad signal.

The third plus is energy efficiency. While it may seem like running 4G constantly consumes more battery, in fact, the lack of constant switching between communication standards (handover) reduces the load on the radio module.

• 🚀 Simultaneous operation: the ability to talk on the phone and use the navigator or messengers without losing Internet speed.
• 🔊 HD-sound: Improved voice quality through the use of broadband codecs.
• ⚡ Quick dial: Reduce the waiting time of the connection with the interlocutor to a minimum.
• 📶 Stability: Reducing the number of connection breaks in areas of uncertain signal reception.

Checking the compatibility of the operator and SIM-map

Before you try to activate the feature forcefully, you need to make sure your mobile operator supports VoLTE technology in your region. Major federal carriers have long implemented this service, but it may not be activated on the default tariff plan.

It also plays an important role itself. SIM-If you use an old card that was released many years ago, it may not support new security and data protocols, which would require replacing the SIM card in the operator's cabin, which is usually free and takes a few minutes.

You can use the service status check USSD-These commands may differ from provider to provider, so it is recommended to contact the official website or the support service. V0 LTE It may appear, but calls will be dropped or go through 3G.

Activate the function through the Xiaomi engineering menu

If your carrier supports the technology but the icon doesn't appear, it may be hidden in the operator's settings. Xiaomi smartphones have a hidden engineering menu that allows you to control the parameters of the radio module.

Open the Phone app and dial the combination ##86583##. If you did everything right, the system will give the message "VoLTE carrier check was DISABLED." This means that the operator check is disabled and the phone will try to use VoLTE wherever possible. Re-enter the code will return the status of "ENABLED", that is, will turn on the check.

Once you have entered the code, restart the device. Then go to the settings. SIM-There should appear an item "Use VoLTE" or "Calls on the maps." LTE". Turn on the switchboard if the icon is rebooted. V0 LTE Appeared in the status bar, so the activation was successful.

Adjustment through ADB and hidden commands

In cases where standard methods do not work or the menu is hidden by the manufacturer, you can use debugging on the menu. USB tool ADB (Android Debug Bridge: This method requires you to connect your smartphone to your computer and have drivers installed, and it allows you to make changes to your databases directly.

First, you need to activate the developer mode. To do this, seven times click on the build number in the About Phone section. Then in the advanced settings, turn on Debugging on. USB". Connect your phone to your PC and open the command line or terminal in the folder with ADB.

To force the function to be enabled, enter the following command:

adb shell settings put global volte_enabled 1

You may also need to change the setting for a particular slot. SIM-Use the command:

adb shell settings put global carrier_volte_available 1

Once you have completed the commands, be sure to restart the device, a method that is more profound and can help in situations where the software switch in the interface is missing or inactive.

💡

Use of the ADB-commands allow you to bypass interface limitations MIUI, but requires caution: incorrect introduction of parameters can lead to unstable operation of the communication module.

Hiding the V0 LTE badge in the status bar

For some users, the V0 LTE icon may interfere visually, closing other notifications or simply annoying with its presence. Unfortunately, in standard Android settings, there is no button to hide this particular indicator. However, there are workarounds that depend on the shell version.

The newer versions of MIUI and HyperOS have the ability to hide icons through the Notifications and Status Bar menu. Try to navigate the Settings path → Notifications and Status bar → Status bar. If there's a switch to display VoLTE or 4G icons, you can deactivate it. However, often this icon is considered systemically important and not hidden by standard means.

Alternatively, tweaks or modified launchers are used, but they require more in-depth system intervention, and you can also try to disable icon display via ADB using the command to hide system icons, but this can affect the display of other important indicators.

⚠️ Warning: Forced VoLTE activation through the engineering menu on unsupported operators can cause outgoing calls to be reset and incoming calls to not pass. Use these settings only if you are confident in the support of the technology by your provider.

Possible problems and solutions

Despite the benefits of technology, users can face a number of challenges, and the most common problem is that the icon is on, but the calls don't go through. APN or SIM-In this case, it is recommended to reset the default access point settings.

Another problem is that the icon disappears after the reboot, which may indicate that the operator is blocking the service at the network level or requires re-authorization. SIM-map, wipe contacts and paste again, and re-registering the network through flight mode will also help.

If you notice a strong battery drain after turning on V0 LTE, it may be that your 4G signal is unstable in your coverage area. The phone is constantly looking for a network that consumes energy. In such cases, it is advisable to temporarily switch to 3G Only mode or turn off VoLTE.

⚠️ Attention: When using two SIM-activation of VoLTE cards on one of them can automatically turn off 4G Second, put it in the mode. 2G/3G. This is the technical limitation of most modern modems.

Frequently Asked Questions (FAQ)