What does the VoLTE icon on Xiaomi Redmi phone mean and how to manage it?

Did you notice a mysterious VoLTE sign next to the network indicator on the Xiaomi Redmi notification panel? This icon appears to many users after a firmware update or change SIM-It's a map, but not everyone understands what it means or why it's needed. LTE) — This is a modern technology of voice communication, which dramatically improves the quality of calls through the Internet. 4G-Unlike traditional phone calls. 2G/3G, VoLTE transmits voice in digital format, which eliminates noise, echoes and communication interruptions.

However, owners of Redmi Note 10/11/12, Redmi 9/10 and other models often have questions: why does the icon appear and disappear? Should it be turned on forcibly? Does VoLTE affect battery consumption? In this article, we will discuss in detail how the technology works on Xiaomi smartphones, how to activate it (if the icon is not displayed), and what problems can arise when using it.

What is VoLTE and why is it important for Xiaomi Redmi?

VoLTE (Voice over LTE) — This is a voice communication standard that uses 4G-Voice networks instead of outdated 2G/3G. The main advantage of the technology is the quality of sound in the format HD (broadband audio codec AMR-WB), And that makes the voice of the person more clear and natural:

• ⚡ Instant connection – the call is connected to 1–2 seconds against 5–10 second-in-second 2G/3G).
• 📶 Stable communication – fewer breaks when moving between towers.
• 🔄 The parallel operation of the Internet - during the call 4G It does not stop (unlike the other one). 3G, where the Internet falls").
• 🔋 Battery savings – the phone does not switch between networks, which reduces the load on the communication module.

Xiaomi Redmi’s VoLTE support dates back to 2017, but many users are still unaware of its existence, because the technology only works if three conditions are met:

1. Your operator supports VoLTE (in Russia it is MTS, Beeline, MegaFon, Tele2).
2. Yours. SIM-map compatible 4G (usually USIM or nano-SIM of the new model).
3. The phone’s settings activate 4G Calls (VoLTE).

If one of the conditions is not met, the VoLTE icon will not appear on the screen, and calls will be conducted according to the old standards, and the fact that the icon is not available does not mean that the technology does not work – sometimes the operator hides the indication, but the connection still goes over 4G.

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

If the VoLTE icon doesn't show up, but you're sure your carrier supports the technology, try turning it on manually. On different Redmi models, the path to settings may be, but the general algorithm is this:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Find 4G Calls, VoLTE or Improved Calls and activate the switch.
4. Restart your phone (sometimes required to apply changes).

On some firmware (e.g. MIUI 13/14), the option may be hidden deeper:

Settings → Connections and Sharing → Mobile Network → SIM-card settings → 4G Calls (VoLTE)

Make sure that SIM-card 4G|Update the firmware to the latest version MIUI|Check the cover. 4G in your region|Reboot your phone after the changes-->

If the VoLTE item is not on the menu, it could mean:

• 📱 Your Redmi model doesn’t support VoLTE (relevant for older devices until 2018).
• 🔄 Phone firmware modified (castomy) and function disabled.
• 📡 The operator does not provide the service in your region.

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If VoLTE calls become worse after you turn on, try disabling the function and using 3G. Sometimes operators misconfigure network priorities.

Why does the VoLTE icon appear and disappear?

Many Xiaomi Redmi users experience a situation where the VoLTE icon flashes or disappears during a call.

The most common problem is unstable. 4G-If the signal is weak, the phone automatically switches to the radio. 3G, And the VoLTE icon disappears, and you can check the current network from the engineering menu:

##4636## → Phone Information → Install preferred network type

If there is no LTE only or LTE/UMTS auto in the list of available networks, then your Redmi cannot connect to VoLTE for technical reasons.

VoLTE vs VoWiFi: What’s the Difference and Which Is Better?

Along with VoLTE, Xiaomi Redmi often features another technology, VoWiFi (wi-fi calls), both of which improve communication quality, but work in different ways:

• 📶 VoLTE – uses a mobile network 4G It's a good cover for calls. LTE.
• 📶 VoWiFi — routs calls over Wi-Fi, useful in places with poor mobile signal.

The main differences:

On Xiaomi Redmi, both functions can be used simultaneously. For example, at home you can call via VoWiFi (if Wi-Fi is more stable than the mobile network), and on the street you can call via VoLTE. To turn on VoWiFi, go to:

Settings → SIM- Maps and Mobile Networks → [Select SIM] → Wi-Fi Calls

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If you have problems with indoor communication, try turning on VoWiFi first – this often solves the problem of cliffs and poor hearing.

Common VoLTE issues on Xiaomi Redmi and their solutions

Despite the benefits, Redmi users sometimes experience errors when using VoLTE, and here are the most common ones and fixes:

⚠️ Note: If after turning on VoLTE mobile Internet disappeared, check the settings APN. Some operators require a separate profile to 4G-call-up.

• 🔕 The calls don’t connect – make sure you SIM-The card supports VoLTE (call the operator).
• 📵 VoLTE icon is there, but the sound is bad - try to turn off HD-call-up SIM-map.
• 🔄 The phone is constantly switching between 4G and 3G — Manually set the mode only LTE engineer.
• 🔋 Fast battery discharge – turn off VoLTE and check if autonomy improves.

If the problems persist, try:

1. Reset network settings: Settings → System → Reset settings → Reset mobile network settings.
2. Update the firmware to the latest version of MIUI (VoLTE is often improved in new builds).
3. Reinstall SIM-card (sometimes helps physical extraction and re-installation).

On some Redmi models (such as the Redmi Note 8 Pro or Redmi 9T), VoLTE may conflict with dual GPS, in which case, try to disable high-precision location in the settings.

VoLTE on different models of Xiaomi Redmi: features and limitations

Not all Xiaomi Redmi smartphones work equally well with VoLTE. Here is a quick overview of the popular models:

On newer models (like the Redmi Note 12 Pro+), VoLTE is enabled by default and usually requires no additional settings, but on older devices (until 2019) you may need:

• 🔧 Manual firmware update through MIUI bootloader.
• 📥 Installation of custom recovery (e.g, TWRP) activate.
• 📞 Replacement SIM-newer-card (USIM).

If your model doesn’t officially support VoLTE, but you really need the feature, you can try alternative firmware like LineageOS or Pixel Experience, but this requires unlocking the bootloader and can be unwarranted.

How to turn off VoLTE on Xiaomi Redmi if you don’t need it

While VoLTE is useful, some users prefer to disable it. The reasons may be different:

• 📉 Increased battery consumption (phone constantly scanning) 4G-network).
• 📞 Calls got worse (operator misconfigured VoLTE).
• 🌍 In roaming, VoLTE does not work, and the phone is trying hard to connect.

To disable the function:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Turn off the 4G Call (VoLTE) switch.
4. Reboot the phone.

⚠️ Attention: On some firmware MIUI Disabling VoLTE can cause the phone to stop ringing at all 4G. In this case, you will have to manually choose the network. 3G customized.

If after disabling VoLTE you notice that:

• 📶 The Internet has become faster, so the phone’s communication module was overloaded.
• 🔋 Battery lasts longer – VoLTE really consumed excess energy.
• 📞 Calls are more stable, perhaps in your area. 3G works more reliably 4G.

You can always turn on the VoLTE back if you need to.

FAQ: Frequent questions about VoLTE on Xiaomi Redmi