How to turn on VoLTE on Xiaomi: all ways to unlock in 2026

VoLTE (Voice over LTE) technology allows you to call over a 4G/5G network with improved sound quality, fast connection and the ability to use mobile Internet simultaneously while talking. However, many owners of Xiaomi smartphones face a problem: VoLTE is either missing from the settings or not activated despite operator support, the reasons may lie in firmware, regional restrictions or incorrect network parameters.

In this article, we will analyze all the current ways to unlock VoLTE on Xiaomi, Redmi and other devices. POCO — From official methods to hidden engineering menus, you'll learn how to test your model's VoLTE support, what codes and commands help force the feature on, and what to do if the operator blocks the technology. MIUI, where VoLTE is often disabled by default.

1. Verify VoLTE support for your Xiaomi

Before you try to unlock VoLTE, make sure your smartphone and SIM-The map is supported by technology. Even if the specifications of the model indicate VoLTE, its operation depends on the specification of the model:

• 📱 Hardware support – a modem chip (e.g. Qualcomm Snapdragon or Mediatek Helio) must support VoLTE.
• 📶 Firmware - in some regional versions MIUI function is disabled programmatically.
• 🏢 Operator – not all providers provide VoLTE in your region.
• 📲 SIM-Cards – should be nano-SIM with support USIM (obsolete SIM).

To check the hardware support:

1. Go to the GSMArena website.
2. Find your Xiaomi model (like the Redmi Note 12 Pro+).
3. In the Network section, look for the VoLTE string – if there is one, the device supports the technology.

To verify the operator's support:

⚠️ Note: If your Xiaomi is purchased in China (the domestic version), VoLTE may not work with Russian carriers due to differences in frequency bands. LTE-range.

2.The official way to enable VoLTE through the MIUI settings

The easiest method is to activate VoLTE via the standard menu, and the instructions are suitable for most Xiaomi, Redmi and POCO models with global or European MIUI 12 firmware and later:

1. Open the Settings app.
2. Go to section. SIM-maps and mobile networks.
3. Choose yours. SIM-card (if there are several).
4. Tap on the network type or preferred network type.
5. Select the 4G (preferably)/LTE option or 4G/3G/2G (auto).
6. Go back and find the VoLTE switch (may be called Improved Calls or the VoLTE switch). HD-call-up).
7. Activate the slider.

If there is no VoLTE item:

• 🔍 Check if the firmware is updated (path: Settings) → The phone. → Updating the system).
• 🔄 Restart your phone – sometimes the option appears after the reboot.
• 📱 Try inserting. SIM-The card is another slot (if there are two of them).

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On some models (e.g. POCO X3 Pro), the VoLTE option is hidden. To see it, first select the 4G Only network type, then go back and the item may appear.

3. Hidden engineering menus: forced VoLTE inclusion

If VoLTE is not in the standard settings, you can try activating it through the engineering menu.This method works on most Xiaomi smartphones with Qualcomm Snapdragon chips (for example, Redmi Note 11 Pro+, Xiaomi 12T).

Instructions:

1. Open the Phone app.
2. Enter the code ##4636##
3. In the menu that opens, select Phone Information (or Phone Information).
4. Scroll down to the Set preferred network type section.
5. Select LTE only or LTE/WCDMA/GSM auto.
6. Go back and find the VoLTE provisioned item – if you have one, turn it on.

For devices on Mediatek (e.g. Redmi 10C, POCO M4 Pro) use the code:

##36446337##

In the engineering menu, go to Connectivity → LTE and activate VoLTE.

⚠️ Attention: Changes to the engineering menu can cause network failures. If the mobile Internet is lost after manipulation, reset the network settings to Settings → SIM-map → Resetting mobile network settings.

4. unlock VoLTE through ADB-Teams (for advanced teams)

If previous methods have failed, you can try enabling VoLTE via ADB (Android Debug Bridge), which requires a computer and basic command-line knowledge, and is suitable for models where VoLTE is locked at the firmware level (for example, Xiaomi Mi 11 Lite with Chinese MIUI).

Instructions:

1. Turn on Developer Mode: Go to Settings → About Phone. Tap 7 times on MIUI Version.

USB debugging

Settings → Additional → For Developers

Xiaomi

official website

ADB Tools

adb devices

(The name of your device should appear).

adb shell


settings put global volte_vt_enabled 1




settings put global enhanced_4g_lte 1




setprop persist.radio.voltetest 1




setprop persist.radio.volte_rat_switch 1




setprop persist.dbg.volte_avail_ovr 1




setprop persist.radio.add_endc 1

Reboot the phone.

After restart, check for the presence of the VoLTE item in the settings SIM-If you don't have one, try manually turning on the mode. LTE and make a test call – sometimes the function works without visual display in the menu.

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ADB-teams temporarily unlock VoLTE until the next reset.

5.Volte-enabled firmware: When nothing helps

If all previous methods failed, the problem may be the firmware, especially for:

• 📱 Chinese versions of Xiaomi (e.g. Mi 10 Pro China).
• 📲 Devices with custom firmware (for example, LineageOS).
• 🔄 Smartphones after resetting to factory settings with loss of modem settings.

Decisions:

1. Install global MIUI: Download the official global firmware for your model from Xiaomi. Use the Mi Flash Tool for Fastboot Firmware. Select the Clean All option.

Installation of custom firmware with VoLTE:

• Popular firmware: Pixel Experience, ArrowOS, crDroid.
• Before installing, check on the XDA forum if the firmware supports VoLTE for your model.
• Modem Update: Sometimes it only helps to flash the modem file (modem.img) This is a newer version of the firmware. modem.img fastboot reboot

⚠️ Attention: Firmware via Fastboot or custom installation ROM This can cause loss of warranty and "brick" of the device. Before the procedure, make a backup of the data via Mi. PC suite TWRP.

6. Solving problems with VoLTE: errors and their correction

Even after successful activation of VoLTE, failures may occur.

If after activation of VoLTE calls began to be interrupted or interference appeared, try:

• 🔧 Disable Wi-Fi Calling (can conflict with VoLTE).
• 📶 Manually select the operator network in Settings → SIM-map → Choice of network → Manual search.
• 🔄 Reset network settings (Settings) → SIM-map → Resetting mobile network settings).

7.VoLTE alternatives: Wi-Fi Calling and ViLTE

If you can’t unlock VoLTE, consider alternative technologies:

• 📞 Wi-Fi Calling: Calls over Wi-Fi (works even without mobile network coverage) Activated in Settings → SIM-map → Wi-Fi Calling.
• 🎥 ViLTE (Video over LTE): Video calls on 4G. Enables with VoLTE or via the Engineering Menu (#84583##).
• 💬 Calls via WhatsApp, Telegram or Viber (do not require operator support).

Wi-Fi Calling is especially useful in places with poor 4G coverage.

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Activate the Wi-Fi Calling switch.
4. If necessary, confirm the address for emergency calls.

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If your carrier doesn't have Wi-Fi Calling but has VoLTE, try using the Google Phone app (install from the Play Market).It often works better with VoLTE than the standard call app from Xiaomi.

FAQ: Frequent questions about VoLTE on Xiaomi