VoLTE mode in Xiaomi smartphones: why you need, how to set up and fix problems

VoLTE Technology (Voice over) LTE) It has long been the standard for modern smartphones, but many Xiaomi users still do not understand why they need it and how to set it up correctly. HD-Voice, but you don’t know if you should agree – this article is for you.

We’ll look at how VoLTE in Xiaomi differs from standard calls, which models support the technology (including budget Redmi and flagship Mi), and why sometimes after a MIUI update, the mode suddenly shuts down, and also give a checklist to diagnose problems and how to fix them without going to the service.

Spoiler: If your smartphone is released after 2018, it almost certainly supports VoLTE — but whether it works correctly depends on three factors: firmware, operator, and network settings.

What is VoLTE and why is it important for Xiaomi?

VoLTE (Voice over LTE) is a 4G voice technology, unlike traditional calls that use outdated 2G/3G networks. The main advantage is that during a conversation, the Internet does not break off, and the sound quality becomes noticeably cleaner (no noise and interruptions).

For Xiaomi owners, this is especially true for three reasons:

1. Battery savings: With VoLTE, the smartphone doesn’t switch between 4G and 3G, which reduces the load on the modem.
2. Fast connection: the call is connected in 1-2 seconds (versus 3-5 for conventional calls).
3. Support for modern chips: for example, Wi-Fi Calling (wi-fi calls) often only works when VoLTE is activated.

But there are pitfalls, too: In some regions of Russia, for example, operators (especially Tele2 and Iota) still do not provide VoLTE for all subscribers, and on older MIUI firmware (below version 12), the feature can malfunction.

How do you know that VoLTE actually works on your Xiaomi? When you call, look at the top notification bar: if you see an HD or VoLTE sign next to the network indicator, it's okay. If not, read on to why it could have happened.

What Xiaomi smartphones support VoLTE

Almost all Xiaomi models released after 2018 support VoLTE at the hardware level.

• 📱 Flagships (Xiaomi) 13/14, Mi 11, Mix 4): Support out of the box, often with optional options like ViLTE (video calls) 4G).
• 💰 Mid-size segment (Redmi Note) 11/12, POCO X5): VoLTE is available, but may require manual inclusion in settings.
• 🪙 Budgetary (Redmi) 10A, POCO M4): For example, Indian versions often lack VoLTE for Russian operators.
• ⚠️ Older models (Redmi 5, Mi) A1): VoLTE may not work at all or may not work at all.

To find out exactly if your smartphone supports the technology, check the specifications on the official Xiaomi website (the "Network" section), or use the Network Signal Guru app from Google Play.

Important: Even if a smartphone supports VoLTE, the carrier can block this feature for your tariff. For example, MegaFon until 2023 limited VoLTE for prepaid subscribers.

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

In most cases, VoLTE is activated automatically after installation. SIM-But if that doesn't happen, follow the instructions:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Click Network Type and select 4G (preferably) or LTE.
4. Go back and find the VoLTE call (or HD-Voice, Improved calls. Switch the switch to "On.".
5. Reboot your smartphone.

If the VoLTE call item is not on the menu, it means:

• 🔄 Your firmware. MIUI Is outdated (update it to Settings) → The phone. → Updating the system).
• 📶 The operator does not support VoLTE for your region / fare (check on the operator's website).
• 🛠️ Smartphone's off. IMS-service (solved by resetting network settings).

Make sure that SIM-card 4G|

Check your balance (some operators block VoLTE when your balance is negative)|

Update your firmware to the latest version of MIUI|

Turn off the "Saving Traffic" mode in the network settings

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Some models (such as the POCO F3 or Redmi K40) may require additional APN settings.

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN).
2. Click on the three dots in the top right corner and select Reset to default values.
3. Save the changes and restart the device.

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If after turning on VoLTE, the Internet disappeared during calls, try to manually select the operator's network in the settings (Settings → Mobile Network → Network Operators → Network Search).

Table: VoLTE on popular Xiaomi models (2020–2026)

Below is the latest information on VoLTE support on the most popular Xiaomi smartphones, based on the latest versions of MIUI 14 and firmware for the Russian market.

Note that even if your model is in the table, VoLTE is not guaranteed to work smoothly. For example, users of the Redmi Note 11 on MegaFon often complain about communication interruptions when switching between towers.

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If your smartphone is not on the list, it doesn’t mean that VoLTE isn’t supported. check the settings or check with the operator – sometimes the feature is hidden in the engineering menu.

Typical VoLTE Problems on Xiaomi and Their Solutions

VoLTE is supposed to make life easier, but in practice, Xiaomi users face a number of problems, and here are the most common ways to fix them:

1. VoLTE not turned on (grey switch)

Causes and solutions:

• 🔧 Outdated firmware: Update MIUI If there are no updates, check the firmware region (should be Russia or Global).
• 📱 Incompatible SIM-card: replace it with a new one (for example, MTS gives free VoLTE-SIM in salons).
• 🔄 Failure IMS: Reset network settings in Settings → Memory. → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.

2 Calls are cut off or not made

A frequent problem on Redmi with MIUI 13/14.

• 📶 Turn off the Auto Network Selection and select the operator manually.
• 🔋 Turn on the mode. LTE (turn off 3G/2G network-setting).
• 🛠️ Install alternative network management software, such as Network Cell Info Lite.

3.The internet goes missing during the call

This means that VoLTE is not working, and the smartphone switches to 3G.

• 🔄 Reboot the phone.
• 📱 Check if the mode is enabled Traffic Saving in the settings SIM-map.
• 🛠️ Reset your network settings (see paragraph 1).

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If the problem occurred after the MIUI update, try rolling back to the previous firmware version via Fastboot or Xiaomi Flash Tool.

It is also useful to use diagnostics USSD-code:

• MTS: *111*555# (Volte support check).
• Beeline: *110*180#.
• MegaFon: *105*500#.

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If none of the methods helped, contact the operator with a request to "bind" IMS-It's a free procedure, but it's often forgotten when you replace it. SIM-map.

VoLTE vs Wi-Fi Calling: What’s Best for Xiaomi

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

On Xiaomi smartphones, these technologies can work together, for example, if you started calling on VoLTE but left 4G coverage, the smartphone will automatically switch to Wi-Fi Calling (if the feature is enabled).

How to turn on Wi-Fi Calling:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose. SIM-Map and activate Wi-Fi calls.
3. Confirm the address for emergency calls (required for the legislation of the Russian Federation).

Note: Tele2 and Iota still don't support Wi-Fi Calling for most fares.

The future of VoLTE: what awaits owners Xiaomi

From 2026, operators begin to massively turn off 2G/3G networks in favor of 4G/5G. This means that VoLTE will become mandatory for making calls. Owners of older Xiaomi smartphones (released before 2018) should consider replacing the device, since without VoLTE support they will lose the ability to call.

In addition, new MIUI firmware features additional functions:

• 🎥 ViLTE - video calls on 4G No third-party apps (already available on Xiaomi 14).
• 🔒 eSIM + VoLTE: Support for virtualization SIM-Maps with technology (planned for Redmi Note 13).
• 🌍 Global roaming: automatic switching between different operators’ VoLTE (tested by MegaFon).

If you are planning to buy a new Xiaomi smartphone, be sure to check:

1. Support for VoLTE and Wi-Fi Calling in the specifications.
2. Availability of MIUI updates (minimum 2 years of support)
3. Compatibility with your carrier (the list of supported models is usually available on the provider’s website).

FAQ: Frequent questions about VoLTE on Xiaomi