Xiaomi VoLTE icon: what it is, how to turn it on and why it disappears

Did you notice a strange VoLTE icon next to the network indicator on Xiaomi's notification panel and you don't know what it means? Or, on the contrary, the icon suddenly disappeared and voice communication became worse? LTE detailed: from the principle of operation to step-by-step settings on Redmi smartphones, POCO and Mi flagships.

We will not limit ourselves to dry theory - here you will find relevant instructions for the future. MIUI 14/15, Compatibility table with Russian operators, as well as solving typical problems (for example, when the VoLTE icon flashes or does not appear at all). Particular attention will be paid to hidden settings of the engineering menu, which help to force the technology to activate on devices blocked by the operator.

If you are a Xiaomi user and want to improve the quality of calls, reduce connection time or just understand modern mobile standards, read on. FAQ-block with answers to frequent questions.

What is VoLTE and why is it needed in Xiaomi?

VoLTE (Voice over LTE) — This is voice transmission technology on networks. 4G/LTE, which replaced the outdated standards 2G/3G. Unlike traditional calls, where voice is encoded into an analog signal, it is transmitted as a voice signal. IP-It's a packet, like the data on the Internet. It has a few key benefits:

• 📞 Instant connection: the call setup time is reduced by 5-7 second 1-2.
• 🎤 Clean sound: wide bandwidth (up to 24 kHz) provides quality comparable to that of HD-ring-off.
• 📶 Without switching networks: during a conversation, there is no drop in Internet speed (as when switching from a computer to a computer). 4G on 3G).
• 🔋 Battery savings: no need to support two radio units (LTE + 3G) simultaneously.

On Xiaomi smartphones, the VoLTE icon appears in the status bar (near the network indicator) only when an active call is made or if the feature is enabled in the settings.

• ✅ Support from the carrier (not all tariffs include VoLTE).
• ✅ Compatible SIM-Cards (usually required) USIM or 4G-LTE).
• ✅ Activated Options in Phone Settings.

If at least one of the conditions is not met, the VoLTE icon will not appear, and calls will go according to the old standards (3G or 2G). This is especially true for Xiaomi users in Russia, where operators (such as MTS or Beeline) may restrict the feature at certain rates.

What does the icon VoLTE on Xiaomi: photos and display options

VoLTE icon on Xiaomi smartphones may differ depending on the version MIUI And the phone models. Here are the basic ways to display it:

On some devices (e.g. Xiaomi) 12T Or the Redmi Note 11 Pro.+) The VoLTE icon may flash or disappear during a conversation:

• 📡 Unstable signal 4G (phone-to-phone 3G).
• 🔄 Problems with SIM-card (for example, a damaged chip).
• ⚙️ Settings conflict (priority disabled in the engineering menu) LTE).

If the icon is missing after the update MIUI, The network settings are probably lost, in which case resetting the mobile settings will help (instruction below).

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In some models (for example, POCO F4) You can force the VoLTE icon to turn on via the engineering menu. To do this, enter the code ##4636## and select Phone information. → Set preferred network type → LTE only.

Step-by-step: how to enable VoLTE on Xiaomi

Activation of VoLTE on Xiaomi smartphones takes no more than a minute, but the path to settings may differ depending on the version. MIUI. Follow the instructions for your firmware:

For MIUI 14 and newer (including HyperOS)

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Tap on the network type or preferred network type.
4. Set the 4G (preferably) or LTE value.
5. Go back and turn on the VoLTE call switch (or Improved Calls).
6. Reboot the phone.

For MIUI 12–13 (old models)

1. Go to Settings. → SIM-maps and mobile networks → Additionally.
2. Choose VoLTE (can be called VoLTE) 4G-call-up).
3. Activate the slider and confirm the action.
4. If you do not have an option, update the firmware or use the engineering menu.

After activation, the VoLTE icon should appear in the status bar. If this does not happen, check:

Does your carrier support VoLTE (list below)|

Is the service activated in the operator’s personal account?|

Is yours compatible? SIM-map (required) USIM)|

Is the firmware updated to the latest version?|

Have you tried restarting your phone?-->

On some models (e.g. Redmi) 9A or POCO M3) The VoLTE option can be hidden, and the engineering menu method will help.

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If after turning on VoLTE calls began to be interrupted or the Internet disappears - check the settings APN. The wrong parameters can conflict with the technology.

List of operators in Russia that support VoLTE on Xiaomi

Not all Russian operators provide VoLTE service for Xiaomi subscribers, here is the current compatibility table (data for 2026):

The operator officially supports VoLTE, on some Xiaomi models, the function can be blocked at the firmware level. For example, the Redmi Note 8 Pro does not support VoLTE on MegaFon, despite the presence of technology in the specifications.

To check the availability of the service:

1. Call the operator’s short number (e.g. *111# for MTS).
2. If during the call in the status bar appeared icon VoLTE – the function is active.
3. If not, contact the operator support and check if the service is included for your room.

Engineering menu: hidden VoLTE settings for Xiaomi

If standard ways of enabling VoLTE do not work, you can use the Engineering Mode, which is suitable for power users and requires caution - incorrect settings can disrupt the mobile network.

To open the engineering menu:

1. Enter the phone code in the app: ##4636##
2. Select the Information (or Phone Information) option.
3. Scroll down to the Set preferred network type block.
4. Set the value LTE only LTE/WCDMA auto.
5. Go back and find the VoLTE provisioned option – it should be Enabled.

If the VoLTE provisioned option is disabled, try:

• 🔄 Reboot the phone.
• 📱 Insert SIM-The card is another slot (if there are two of them).
• 📡 Manually select the operator network in the settings (Settings) → SIM-map → Choice of network).

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In some models (for example, POCO X3 Pro) the engineering menu may be blocked, in which case the installation of the application will help MTK Engineering Mode from Google Play (MediaTek processors only).

⚠️ Note: Changes in the engineering menu may result in:

⚠️ Loss of network communication (reset to factory settings required). ⚠️ Increased battery consumption due to constant network search. ⚠️ Block IMEI operator (in rare cases).

If after manipulations, the VoLTE icon did not appear, return the settings to the original state or contact the service center.

VoLTE is missing after the update: how to return

One of the most common problems is the disappearance of the VoLTE icon after the update. MIUI. It's connected to:

• 🔄 Resetting network settings by default.
• 📱 Conflict of new firmware with communication module.
• 📡 Changes in operator policy (e.g. Beeline periodically updates the list of supported devices).

To return the function, follow the following steps:

1. Resetting mobile network settings

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Reset Mobile Network Settings (or Reset Network Settings).
3. Confirm the action and restart the phone.

2 Manual update of operator configuration

1. Enter the code in the phone application: ##2432546##
2. In the menu, select Update operator config.
3. Wait until the process is completed (it can take up to 5 minutes).

3.Verification APN

Wrong parameters APN (access points) can block VoLTE. To reset them:

1. Open the Settings. → SIM-map → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to default values.
3. Reset the device.

If the problem persists, try:

• 📥 Install an older version MIUI (If the update has caused a bug).
• 🔧 Contact the service center for reflashing the communication module.

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After resetting the network settings, it may be necessary to re-activate VoLTE in the operator’s personal account (for example, through the site or through the website). USSD-team).

Frequent VoLTE issues on Xiaomi and their solutions

Even after setting up VoLTE correctly, Xiaomi users may face a number of problems, and here is a list of typical situations and ways to fix them:

If none of the methods worked, check:

• 📡 Coverage area 4G: VoLTE requires a stable signal. LTE (You can check it out through the NetMonster app).
• 🔋 Power saving mode: some profiles (such as Ultra battery saver) disable VoLTE.
• 🛠️ Custom firmware: Unofficial builds (e.g. LineageOS) may not support VoLTE.

⚠️ Note: If after all the manipulations VoLTE has not worked, it is possible that your model Xiaomi is not certified by the operator for this function. 3G-Calling, or consider alternatives like Wi-Fi Calling (if supported).

FAQ: Answers to Frequent Questions about VoLTE on Xiaomi