VoLTE on Xiaomi Redmi: why you need it, how to turn on and fix problems

What is VoLTE on Xiaomi Redmi smartphones and why it matters

Have you ever noticed that while you're on the phone, Xiaomi Redmi suddenly loses mobile Internet? Or that the voice of the interlocutor sounds like he's talking from a barrel? The reason for this may be the lack of activated VoLTE, a technology that dramatically changes the quality of voice communication. But what is it in practice and why smartphone manufacturers, including Xiaomi, are so emphasizing it?

VoLTE (from Voice over) LTE) — This is a standard for voice transmission over the network. 4G LTE, Not through the old days. 2G/3G, The main advantage is that voice data is now transmitted digitally. HD-quality, without compression or loss. 12, Redmi 10 or other models, that means:

• 📞 Clean sound without noise or interruption, as if the interlocutor is nearby, even if he is on the other side of the country.
• ⚡ Instant connection – no delay in 1-2 seconds in dialing.
• 🌐 The Internet does not turn off during a conversation – you can talk and use instant messengers at the same time.
• 🔋 Savings in charge – the phone does not switch between networks 4G→3G, Reduces the load on the processor.

However, there is a caveat: not all operators and not all models of Xiaomi Redmi support VoLTE out of the box. 9A The feature can be disabled by default, and in the Redmi Note 11 Pro+ 5G — work only with certain SIM-Next, we'll look at how to check for support, turn on VoLTE, and solve typical problems.

How to find out if your Xiaomi Redmi supports VoLTE technology

Before you try to turn on the feature, you need to make sure that your smartphone and SIM-This is the 3 steps to check it:

1. Smartphone model check. Not all Xiaomi devices are VoLTE compatible. For example, budget models like Redmi 8A or Redmi Go may not have hardware support. A full list of compatible devices can be found on the manufacturer's website or from the operator. Please note that even if the model is on the list, the feature may be blocked for some regions.
2. Verification SIM-VoLTE only works with cards. USIM-maps (them are also cards) 4G SIM). Old ones. SIM Mini-SIM or Micro-SIM format without support LTE Ask the operator if you need a card change, like MegaFon. USIM free of charge when replaced.
3. Checking the network coverage, even if the smartphone and SIM-The card is ready, VoLTE should support your operator in your region, MTS and Beeline have more VoLTE coverage than Tele2.

If all three conditions are met, but VoLTE doesn't work, it could be the phone settings or the firmware, and we'll talk about that in the next section.

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To quickly check the type SIM-Insert it into another smartphone with VoLTE support if the icon appears on the screen. HD VoLTE when calling – the card is suitable.

Step-by-step: how to turn on VoLTE on Xiaomi Redmi

Activation of VoLTE on Xiaomi smartphones usually takes no more than a minute, but the path to settings may vary depending on the version of MIUI. Below is a universal guide for firmware MIUI 12-14:

Open the Settings. → SIM-maps and mobile networks

Choose yours. SIM-card (if there are several)

Tap on the item Network type or Preferred network type

Select 4G option (preferably) / LTE or VoLTE enabled

Reboot your phone (required!)

Make a test call – next to the signal level should appear an HD or VoLTE icon

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If you don’t have a VoLTE option in your settings, try an alternative method:

1. Enter the code in the phone app: ##4636##
2. The Test menu will open. Select Phone Information.
3. Scroll down to the Set preferred network type block and select LTE only or LTE/UMTS auto.
4. Go back and turn on the VoLTE provisioned switch (if any).

Important! On some models (for example, Redmi Note 10 Pro) after turning on VoLTE, the Internet may disappear, this is due to the conflict of APN settings. The solution is to manually add the operator's APN (you can take the options on his website).

Table: Compatibility of VoLTE with Xiaomi Redmi models (2020–2026)

Not all Xiaomi Redmi smartphones support VoLTE equally well, but the following are popular models based on user tests and official specifications:

Important for Redmi Note owners 10S: This model has a VoLTE bug when using two SIM-The solution is to turn off the second. SIM or upgrade to MIUI 14.

Typical VoLTE issues on Xiaomi Redmi and their solutions

Even if VoLTE is enabled, users often experience problems, and here are the most common scenarios and ways to fix them:

• 🔄 VoLTE turns on, but after a few minutes it turns off Reason: conflict with energy saving settings Solution: disable Adaptive battery in Settings → Battery and add the Phone app in optimization exceptions.
• 📵 VoLTE icon is there, but calls do not pass Reason: incorrect settings APN. Solution: Remove everything APN-Profiles and upload automatically through Settings → SIM-map → Access point (APN) → Reset to factory.
• 🔊 The interviewee hears an echo or an intermittent sound Cause: poor quality of the operator's network. Solution: switch to 3G for an ongoing call or contact the operator for a diagnosis.
• 🔋 Fast battery discharge after VoLTE powering on Reason: Constant network search 4G Solution: Turn on mode Only. 4G In network settings or use the Network Signal Guru app to analyze coverage.

⚠️ Warning: If after turning on VoLTE, the phone begins to overheat or spontaneously reboot, this may indicate a modem malfunction.In this case, turn off the function and contact the service center - self-repair can lead to loss of warranty.

VoLTE vs ViLTE vs VoWiFi: What’s the difference and what’s best for Xiaomi Redmi

In addition to VoLTE, Xiaomi smartphones can meet other voice communication technologies: ViLTE and VoWiFi. Let’s see how they differ and which is better to use:

In practice, VoLTE is the most versatile option, since it works anywhere there is 4G. VoWiFi is convenient in places with poor mobile signal (for example, in the subway or in the countryside), and ViLTE is still a feature of flagship models.

To enable VoWiFi on supported models:

1. Go to Settings. → SIM-maps and mobile networks → Wi-Fi call.
2. Turn on the switch for the right one. SIM-map.
3. If necessary, confirm the address for emergency calls (required for the legislation of some countries).

How to Update Your Firmware to Support VoLTE on Xiaomi Redmi

If your smartphone doesn’t support VoLTE but the specifications are, the problem may be with outdated firmware. Xiaomi regularly releases updates that add support for new communication standards. Here’s how to update correctly:

Backup data via Settings → About phone → Backup

Connect to Wi-Fi (update "over the air" can weigh 1-3 GB)

Open Settings → About the phone → System update

Click Check Updates and wait for the download

Install the update and restart the phone

After restart, check for the presence of the VoLTE item in the network settings.

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If the “over the air” update is not available, you can install the firmware manually:

1. Download the latest stable version of MIUI for your model from the official Xiaomi website (select Russia or Global region).
2. Place the.zip file in the phone’s root folder (not in the folder!).
3. Open Settings → About Phone → System Update, tap three dots in the upper right corner and select Select a firmware file.
4. Specify the downloaded file and confirm the installation. The phone will reboot automatically.

⚠️ Note: Install firmware from unverified sources (e.g. forums) 4PDA) It may lead to a blockage. IMEI or loss of modem functionality. Use only official files from Xiaomi website.

For advanced users: If VoLTE never came up after the update, check for the carrierconfig file in the firmware. its absence may indicate that the operator has not certified your model for VoLTE. In this case, only asking for support from the operator to add your phone's IMEI to the database will help.

FAQ: answers to frequent questions about VoLTE on Xiaomi Redmi

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VoLTE on Xiaomi Redmi is not a luxury, but a necessity for a comfortable connection in 2026. If your phone supports the feature but it is turned off, you lose sound quality, connection speed and waste battery. Follow the instructions from the article, and in 5 minutes you will appreciate the difference!