VoLTE on Xiaomi Redmi: decryption icon, configuration and problem solving

You noticed a mysterious VoLTE icon next to the network indicator on your Xiaomi Redmi screen and wondered what it means: This little inscription hides behind it one of the key technologies of modern mobile communication, which radically changes the quality of voice calls. Unlike traditional calls, where voice is transmitted through outdated ones. 2G/3G-Networks, Voice over LTE high-speed 4G-channels, providing crystal clear sound and instant connection.

But why doesn't everyone on Redmi have this icon, and what if it suddenly disappears? In this article, we'll not only decipher the meaning of VoLTE, but we'll also go into detail:

• 🔹 How Technology Works and How It Is Better Than Conventional Calls
• 🔹 Why the icon may not be on your device
• 🔹 Step-by-step instructions for enabling VoLTE on different Redmi models
• 🔹 How to fix typical problems (no network, login errors)

We will pay special attention to the nuances for Russian operators – MTS, Beeline, MegaFon and Tele2, where VoLTE support is implemented in different ways.

Important: Starting in 2023, most operators in Russia are actively transferring subscribers to VoLTE, but some Xiaomi models (especially those released before 2021) may require manual tuning or firmware updates.

1 What is VoLTE and why is it needed on Xiaomi Redmi?

VoLTE (Voice over LTE) — This is a standard for voice transmission over the network. 4G LTE, which replaced obsolete technologies CSFB (Circuit Switched Fallback: What are the key advantages?

• 📞 Instant connection: the call setup time is reduced by 5-7 second 1-2 Seconds (like on WhatsApp Internet calls)
• 🎧 Sound quality HD: broadband (up to) 24 kHz 8 khz 2G/3G — You can hear even whispers and background sounds.
• 📶 No network switching: during the call, stay in the 4G (unlike CSFB, where the phone falls 3G/2G)
• 🔄 Parallel work: you can simultaneously talk and use the mobile Internet (for example, Google information)

In practice, this means that conversations over VoLTE sound as clear as those over Zoom or Skype, but without any application being involved, it's built into the carrier level, for example, if you call with the Redmi Note 10 Pro on the iPhone 13, and both have VoLTE enabled, the quality will be maximum.

⚠️ Note: If your Xiaomi Redmi doesn’t have a VoLTE icon, it doesn’t always mean that the technology isn’t working. Some carriers (like Tele2) may be hiding the indicator even though the connection is on the way. 4G. You can check this through the engineering menu (more on this below).

2.Why Xiaomi Redmi may not display VoLTE

The lack of a VoLTE icon is a common problem, and there are several reasons for it.

Especially often the problem occurs on Redmi models with global firmware (for example, Redmi). 9A The fact is that in some regions VoLTE is disabled by default due to the peculiarities of local networks, whereas in Russia all major operators have long supported the technology, but require it:

• 📱 Compatible device (list is available on operators’ websites)
• 📶 Coverage 4G LTE in your region
• 💳 Active. USIM-map (ordinary) SIM may not work)

How to check if your Redmi VoLTE supports? Go to Settings → The phone. → All specs and find the VoLTE string. If it's not available, the device is not compatible (relevant for older models like Redmi). 4X).

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If you travel frequently, check your operator’s roaming partners before traveling – not all of them support VoLTE in other countries, for example, MegaFon only provides VoLTE roaming in 15 countries (2026).

3. Step-by-step instructions: how to enable VoLTE on Xiaomi Redmi

If your smartphone and carrier support the technology, but the icon is not on, follow this instruction. Please note: the path to settings may vary slightly depending on the version. MIUI (12, 13 or 14).

Make sure that SIM-map USIM|Check the cover. 4G in your region|Update the firmware to the latest version|Restart your phone before setting up-->

Method 1: Through standard settings

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. Choose. 4G (preferably) / LTE or 4G+.
5. Go back and find the VoLTE item (maybe in the submenu Additional).
6. Activate the switch.

Method 2: Through the Engineering Menu (if no VoLTE item is available)

This is a method that is suitable for advanced users, and be careful that the wrong changes can disrupt the network.

1. Open the Phone app and dial ##4636##.
2. Go to the phone information section.
3. Scroll down to Set your preferred network type.
4. Select LTE only or LTE/WCDMA/GSM auto.
5. Go back and find the VoLTE provisioned item – if it is Enabled, the technology is active.

Method 3: Resetting network settings

If VoLTE has previously worked but Suddenly disappeared, try:

1. Go to Settings. → SIM-maps and mobile networks → Resetting network settings.
2. Confirm the reset (reboot will be required).
3. After turning on the phone, re-activate VoLTE via settings.

⚠️ Note: Some Redmi models (e.g. Redmi Note 8 Pro) may lose access to mobile internet after a network reset. APN (Access parameters for your operator.

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If after all the manipulations VoLTE did not work, check whether it blocks third-party software (for example, applications to save battery or other devices). VPN). Try to temporarily shut them down.

VoLTE on Xiaomi Redmi: Features for Russian Operators

In Russia, support for VoLTE is implemented differently. Let's consider the nuances for each operator:

How do you know if your plan supports VoLTE?

• 📞 MTS: Dial *111*0887# and follow the instructions.
• 📞 Beeline: send SMS textual VOLTE 5216.
• 📞 MegaFon: check the section "Services" in your personal account → VoLTE".
• 📞 Tele2: Call 611 and check with the operator.

If the carrier has confirmed support but VoLTE is not working, the problem may be with your Redmi’s regional firmware.For example, global versions of the Redmi Note 11 sometimes require manual adjustments through the engineering menu (as described above).

5.Typical VoLTE issues on Xiaomi Redmi and their solutions

Even if you set up VoLTE correctly, you can still get out of hand.

Problem 1: VoLTE sign is there, but calls go through 3G

Reason: The operator registers the device on the VoLTE network, but due to a weak signal 4G switch 3G.

Decision:

• 📶 Check the signal level. 4G In Settings → SIM-map → Network signal, if less. 2-3 Move closer to the window or go outside.
• 🔄 Turn on the mode. LTE in network settings (disables automatic switching to 3G).
• 📡 If the problem persists, contact the operator – there may be maintenance in your location. 4G-network.

Problem 2: VoLTE goes missing after the update MIUI

Reason: Newer firmware versions may reset network settings or conflict with the modem module.

Decision:

1. Make a backup of data through Settings → Memory → Backup.
2. Perform reset network settings (Settings) → SIM-map → Resetting settings).
3. If it doesn’t help, go back to the previous version. MIUI through settings → The phone. → Updating the system → Three points. → Select a Service Package.

Problem 3: It is impossible to turn on VoLTE - item gray

Reason: This usually means that the firmware does not support VoLTE for your carrier (relevant to gray devices imported from abroad).

Decision:

• 🔧 Install custom firmware with VoLTE support (for example, MIUI EU Note: This will void the warranty!
• 📥 Update the firmware modem via Fastboot (instructions are available on the forums) 4PDA or XDA Developers).
• 🔄 Check if your operator is blocking VoLTE for a given Redmi model (e.g. Redmi). 9C not supported by Tele2).

⚠️ Note: Some Xiaomi models (e.g. Redmi) 8A) After hand-stitching, the modem may disappear IMEI. Before the procedure, save it via the engineering menu (*#06#) or app. MTK Engineering Mode.

Problem 4: Internet goes missing during a VoLTE call

Reason: Some operators (such as Beeline in roaming) limit the parallel operation of voice and data.

Decision:

• 📞 Call back and check if the internet has recovered after the connection.
• 🔧 Enable Wi-Fi Calling in the settings – this will allow you to call over the Internet without losing mobile data.
• 📡 Contact the operator to see if Simultaneous Voice and Data is supported (SVLTE) in your region.

6. VoLTE vs Wi-Fi Calling: Which is better on Xiaomi Redmi

Many users confuse VoLTE and Wi-Fi Calling, although these are two different technologies, and let's see what's different and when to use what:

When to use VoLTE:

• 📶 You are in a safe reception zone. 4G.
• 📞 You want to get the best sound without delay.
• 🔄 You need to talk and use the mobile Internet at the same time.

When to use Wi-Fi Calling:

• 🏠 You are in a room with poor mobile signal, but there is Wi-Fi.
• 🌍 Call from abroad (roaming savings).
• 💰 Want to save fare minutes (wi-fi calls are often free).

How to enable Wi-Fi Calling on Xiaomi Redmi:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Activate the Wi-Fi Calling switch.
4. At the first turn on, you may need to enter a login / password from the operator’s personal account.

On some models (e.g. Redmi 10), Wi-Fi Calling and VoLTE cannot be enabled simultaneously, in which case Wi-Fi Calling is given priority if the phone is connected to the network.

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If you have a weak signal 4G, But there is a stable Wi-Fi, it is better to prefer Wi-Fi Calling, but when traveling in Russia (for example, by train), VoLTE is more reliable - not all cars are equipped with Wi-Fi, and 4G The rail line is usually good.

7.The future of VoLTE: what awaits the technology in 2026-2026

VoLTE is not a temporary solution, but a basis for the development of mobile communications, and in 2026 operators begin to switch to VoNR (Voice over New Radio), which will work over networks. 5G. What does this mean for Xiaomi Redmi owners?

• 📡 Even better sound quality (up to 32 kHz vs. 24 kHz for VoLTE).
• 🔥 Ultra-low delays (less than 100ms) – conversations will become like live communication.
• 🤖 AI integration: operators are testing features like automatic real-time conversation translation.
• 📱 Support for new models: starting with the Redmi 12 and POCO X5, Xiaomi adds VoNR hardware support.

But there are pitfalls:

• ⚠️ Not all operators are ready: in Russia, MTS and MegaFon test VoNR only in Moscow and St. Petersburg.
• ⚠️ New ones will be needed. SIM-maps: 5G VoNR needs eSIM cards or 5G USIM.
• ⚠️ Old smartphones will remain without support: Redmi models until 2022 release is unlikely to receive VoNR.

If you’re planning to buy a new Xiaomi Redmi in 2026 and want to be ready for VoNR, look out for models with support. 5G SA (Standalone, for example:

• 📱 Redmi Note 13 Pro+ 5G
• 📱 POCO F5 Pro
• 📱 Xiaomi 13T

How do you know if your Redmi VoNR supports? Check the specifications on Xiaomi's official website or in the Mi Community app. 5G VoNR or 5G SA.

FAQ: Frequent questions about VoLTE on Xiaomi Redmi