VoLTE on Xiaomi: A Complete Guide to Setup and Solve Problems

Did you buy a new Xiaomi smartphone and see a mysterious VoLTE item in the settings? Or does the carrier suggest you connect this service, but you don't understand why you need it? This article will take a look at Voice over LTE (voice over 4G) technology on Xiaomi, Redmi and POCO devices — from working principles to step-by-step configuration and troubleshooting.

Let's get right to the point: VoLTE on Xiaomi doesn't just improve call quality, it allows you to call and use mobile Internet at the same time at the highest speed. Without this technology, the network automatically switches to 3G/2G when you talk, which slows down file loading and worsens communication. But there's a nuance: not all models and carriers support VoLTE equally well. Next, you will learn how to check compatibility, turn on the feature and what to do if it doesn't work.

What is VoLTE and why is it needed in Xiaomi?

VoLTE (Voice over LTE) is a fourth-generation (4G) voice technology, unlike traditional calls that use 2G/3G. On Xiaomi smartphones, it is integrated into MIUI firmware and requires support from both the device and the mobile operator.

The main advantages of VoLTE are:

• 📞 Sound quality: voice is transmitted in format HD (broadband audio codec AMR-WB), It makes conversations clearer, without noise or interference.
• ⚡ Internet speed: during the call there is no “rollback” 3G/2G — You can continue to download files, watch videos or play online.
• ⏱️ Fast connection: call setup time is reduced to 1-2 seconds (versus 5-10 seconds on standard networks).
• 🌍 Global compatibility: works in roaming for operators supporting the technology (for example, MTS, Beeline, MegaFon in Russia).

However, there are limitations, for example, not all Xiaomi models support VoLTE out of the box – especially for devices for the Chinese market (China). ROM). In addition, some operators may charge a fee for connecting a service or require a special service. SIM-map, USIM).

What Xiaomi smartphones support VoLTE

Technically, all modern Xiaomi smartphones (released after 2018) support VoLTE at the hardware level.

1. Compatible firmware (Global ROM, EEA ROM or Russia ROM).
2. Activated service from the operator.
3. The correct settings in the device menu.

Below is a table with models where VoLTE works stably (data is relevant for MIUI 12-14):

⚠️ Note: If you are using China ROM (If you want to use firmware for the Chinese market, VoLTE may not work even on supported models, in which case you will need to reflash the device on Global or EEA version.

How to enable VoLTE on Xiaomi: step-by-step instructions

If your smartphone and carrier support VoLTE, you can activate the function in 2-3 minutes.

1. Open Settings and go to SIM cards and mobile networks (or Mobile Network on older versions of MIUI).
2. Choose. SIM-The card you want to include VoLTE for (if there are two of them).
3. Tap on the network type or preferred network type.
4. In the options list, select 4G (preferably) or LTE.
5. Go back and find the VoLTE switch (or Improved Calls, HD-Activate it.
6. Reboot your smartphone so that the changes take effect.

If there is no VoLTE item on the menu, try the following methods:

• 🔄 Update the firmware: go to Settings → The phone. → Updating the system.
• 📱 Reset network settings: Settings → SIM cards and mobile networks → Resetting network settings.
• 🔧 Use the Engineering Menu (for advanced users): type in ##4636##, select Phone Information and check VoLTE status.

Why VoLTE doesn’t work for Xiaomi: common problems

Even if you have enabled VoLTE correctly, the feature may not work, and here are the most common reasons and ways to eliminate them:

⚠️ Note: Some Xiaomi models (e.g. Redmi) 9A or POCO M3) VoLTE may conflict with Wi-Fi Calling. If Wi-Fi Calling is lost after VoLTE activation, try disabling one of the services or updating the firmware.

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If VoLTE is not enabled, try inserting SIM-The first slot (Slot 1) is not supported on some Xiaomi models. 4G-call-up.

VoLTE vs Wi-Fi Calling: What’s the difference and what’s better

Many people confuse VoLTE and Wi-Fi Calling, although they are two different technologies.

• 📶 VoLTE: Works through a mobile network 4G/5G. It requires operator coverage, supported by most modern smartphones.
• 📶 Wi-Fi Calling: Works through a Wi-Fi connection, is useful in areas with poor mobile network coverage, may require additional setup from the operator.

On Xiaomi smartphones, you can use these features simultaneously, for example, at home you can call via Wi-Fi Calling, and on the street you can automatically switch to VoLTE.

1. Enable VoLTE (as described above).
2. Go to Settings → SIM cards and mobile networks → Wi-Fi Calling.
3. Choose. SIM-map and activate the function.
4. If necessary, enter the emergency address (e.g. 112).

💡 Tip: If you have a weak signal 4G, but stable Wi-Fi, prioritize using Wi-Fi Calling - the quality of communication will be higher. VoLTE is better suited for situations when you are on the move (for example, in a car or public transport).

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VoLTE and Wi-Fi Calling are not competing, but complementary. On Xiaomi, they can be used together for maximum coverage.

How to Check if VoLTE is Working on Your Xiaomi

To make sure that calls are actually going through VoLTE, rather than 3G/2G, follow these steps:

1. Call another phone (better with VoLTE support).
2. During the call, look at the network indicator in the top bar: If displayed 4G or LTE + pipe-mark (📞) — VoLTE is active. If the network switched to 3G or+ — VoLTE is not working.

Once you've finished your call, check the Internet speed, and if it's still at 4G, it's set up right.

Additional methods of verification:

• 📊 Engineering menu: type ##4636##, select Phone Information and view the VoLTE provisioned bar (should be Yes).
• 📱 Operator applications: MTS, Beeline and MegaFon have their own utilities for checking the status of VoLTE (for example, My MTS).
• 🔍 Network Logs: Use applications like NetMonster or Network Signal Guru to analyze the connection in detail.

If VoLTE is not activated despite the correct settings, contact the operator.Perhaps your tariff service is blocked or you need a replacement. SIM-card USIM.

VoLTE in roaming: does it work abroad

The use of VoLTE in roaming depends on two factors:

1. Support of the technology by the local operator.
2. A roaming agreement between your operator and a foreign operator.

Here’s how things are with popular Russian operators:

• 🌐 MTS: VoLTE in roaming is working at 30+ countries including Turkey, UAE, Thailand and Europe. the full list is available on the operator's website.
• 🌐 Beeline: Support limited to 15 countries, mainly Europe and CIS.
• 🌐 Megaphone: VoLTE roaming available at 20+ countries, but may require additional activation.
• 🌐 Tele2: does not support VoLTE in roaming (at the time of 2026).

⚠️ Note: In some countries (such as the United States or Japan), local VoLTE may be required. SIM-card, as foreign operators do not always support roaming using this technology.

To enable VoLTE in roaming on Xiaomi:

1. Go to Settings → SIM cards and mobile networks.
2. Choose yours. SIM-map and activate the data roaming option.
3. Make sure that 4G and VoLTE are enabled.
4. Reset the device.

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In roaming, VoLTE can quickly drain the battery due to constant network search.To save charge, turn off the feature in the settings or use the Battery Saving mode.

The future of VoLTE: what awaits the technology

VoLTE is not the final step in the development of voice communication, but an intermediate stage, and today operators are testing more advanced technologies:

• 📡 VoNR (Voice over 5G): calls on fifth-generation networks, available only on flagship models (Xiaomi 14 Ultra, Redmi) K60 Pro) and in a limited number of countries.
• 🤖 AI-Calling: voice processing using artificial intelligence to remove noise and improve sound (already in the UK) MIUI 14 on some devices).
• 🌍 Global roaming: an initiative GSMA - to unify VoLTE between operators of different countries (planned by 2026).

On Xiaomi smartphones, VoNR support will appear in the following firmware:

• MIUI 15 (expected in 2026) – for models with a Snapdragon 8 Gen 2/3 processor.
• HyperOS (new shell from Xiaomi) – for all devices released after 2023.

If you’re planning to buy a new Xiaomi smartphone and want to be ready for future communication standards, look out for models that support 5G SA (Standalone) – they’re guaranteed to get VoNR in the coming updates.

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VoLTE will remain relevant for another 5-7 years, but now it is worth choosing smartphones with VoNR support for future compatibility.

FAQ: Frequent questions about VoLTE on Xiaomi