Did you notice a mysterious VoLTE icon on your Xiaomi screen next to the network indicator? Or suddenly it disappeared and the quality of calls deteriorated with it? This little icon hides behind it one of the key technologies of modern mobile communication - voice over 4G (Voice over LTE). Unlike traditional calls that use outdated 2G/3G networks, VoLTE provides crystal clear sound, instant connection and the ability to simultaneously talk and use mobile Internet at high speed.
In this article, we will discuss in detail what VoLTE is on Xiaomi, why this icon appears (or disappears) on your smartphone, and how to properly configure the function on Redmi, POCO and Mi flagships. You will also learn what problems can arise when using VoLTE and how to solve them – from the lack of an icon to poor communication quality, and at the end you will find an FAQ with answers to the most frequent questions of users.
What is VoLTE and why is it important for Xiaomi?
VoLTE (Voice over LTE) is a fourth-generation (4G) voice technology that has replaced the legacy 2G and 3G standards. Unlike traditional calls, where voice is encoded into an analog signal, VoLTE transmits speech digitally like data packets, which has several key advantages:
- 🎙️ High quality of sound: the width of the frequency band in VoLTE is 2 times larger than in the 3G, which eliminates noise and echo.
- ⚡ Instant connection: the call setup time is reduced by 5-7 second 3G) before 1-2 seconds.
- 📶 Parallel work of the Internet: during a conversation, the speed of mobile Internet does not fall (unlike the Internet). 3G, Where to choose between a call and data).
- 🔋 Battery savings: Thanks to an optimized protocol, the smartphone spends less energy on calls.
For owners of Xiaomi, this technology is especially relevant, as the company actively supports VoLTE on most models, from the Redmi Note 4 (2017) to the flagship Xiaomi 14. Moreover, since 2022, operators in Russia and the CIS countries began to massively disconnect 3G networks, switching to 4G/5G, which makes VoLTE not just a useful feature, but a prerequisite for stable communication in the future.
What does the VoLTE icon look like on Xiaomi and where to look for it?
The VoLTE icon on Xiaomi smartphones can be displayed differently depending on the version of the MIUI firmware and the carrier.
- 📱 Standard view: the inscription "VoLTE" or "HD" in the top notification bar next to the network indicator (for example, "4G+" or "5G").
- 🔄 Dynamic icon: can only appear during a call (e.g., as a flashing "VoLTE Call" sign").
- 🚫 No icon: even if the function is active, some firmware (e.g, MIUI 13 for the global version) hide the default icon.
To check if VoLTE is enabled on your Xiaomi, follow the following steps:
- Open the Settings. → SIM-maps and mobile networks.
- Choose yours. SIM-card (if there are several).
- Find Enable VoLTE or 4G Voice Calls (the name may vary).
- If the switch is active (blue/green), the function is activated.
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On some models (e.g. POCO F5), the path to VoLTE settings may be hidden in Settings → Connections → Mobile Network → Additional.
If you don’t see the VoLTE icon but the feature is enabled, try restarting your smartphone or updating your firmware. Also check if your carrier supports this technology – a list of supported networks can be found on Xiaomi’s official website in the specifications section of your model.
Why Xiaomi doesn’t have a VoLTE icon: possible reasons
The lack of a VoLTE icon is one of the most common problems among Xiaomi users, and there are several reasons, and most of them are easy to fix yourself.
| Reason. | How to check | Decision |
|---|---|---|
| VoLTE disabled in settings | Path: Settings → SIM-cards → VoLTE | Switch on. |
| The outdated MIUI firmware | Settings → About the phone → System update | Update to the latest version |
| The operator does not support VoLTE | Call in support of the operator or check on the site | Change the tariff or operator |
| SIM-map is not compatible | Check: insert another SIM (for example, from MTS or Beeline) | Replace SIM with USIM or eSIM |
| Hardware lock (for grey smartphones) | Try to insert the SIM in another region | Unlocking Regional Restrictions |
Particular attention should be paid to the firmware MIUI. For example, on Xiaomi Redmi Note 10 Pro with global firmware VoLTE can work unstable, while on Chinese (China) ROM) — It's not a problem. It helps to flash it in a flash. EU ROM or custom recovery installation.
What if the VoLTE is turned on but the icon does not appear?
⚠️ Note: Some Xiaomi models (e.g. Mi 11 Lite) are updated to MIUI 14 VoLTE can automatically shut down. This is due to a bug in the firmware - check the settings after each update.
How to enable VoLTE on Xiaomi: step-by-step instructions
Activation of VoLTE on Xiaomi smartphones takes no more than a minute, but the path to settings may vary depending on the model and version of MIUI. Below is a universal algorithm that will suit most devices:
Make sure that SIM-The card supports VoLTE (USIM/eSIM)
Check out 4G coverage in your area
Open Settings → SIM-maps and mobile networks
Pick the right one. SIM-card (if there are several)
Activate the switch Enable VoLTE or 4G Voice calls
Reboot your smartphone to apply changes
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If the standard path doesn’t work, try alternative methods:
- 🔍 Through code. USSD: type ##4636##, Go to Phone Information and select Set Preferred Network Type → LTE/4G.
- 📱 On models POCO: The way may be settings → Connections → Mobile network → Network mode → VoLTE.
- 🔄 For two. SIM-VoLTE can only work on one card SIM (usually on the one in slot 1. To change, go to Settings SIM-map → Choice SIM VoLTE.
Once activated, make a test call. If the top panel says "VoLTE" or "HD" and the sound is cleaner, the function works correctly. If not, check your carrier's APN settings or contact support.
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On Xiaomi smartphones with two SIM-VoLTE can only work on one of these cards. To change priority, go to Settings. SIM-map → Choice SIM for VoLTE and specify the desired slot.
VoLTE vs ViLTE vs VoNR: What’s the difference and what’s best for Xiaomi
In addition to VoLTE, on Xiaomi smartphones you can find other abbreviations associated with voice communication: ViLTE and VoNR. Let's see how they differ and what technology is preferable:
- 📞 VoLTE (Voice over LTE): voice-calling 4G. The standard for most modern smartphones, including Xiaomi.
- 🎥 ViLTE (Video over LTE): video-calling 4G prior 720p. Supported on flagships (Xiaomi) 13T, Mi 12) and requires activation by the operator.
- 🚀 VoNR (Voice over NR): voice-over 5G. Available only on newer models (Xiaomi 14, Redmi) K60) and in a limited number of regions.
For most Xiaomi users, VoLTE is the best choice today, as:
- 4G coverage is wider than 5G (especially in smaller cities).
- ViLTE and VoNR require operator support, and many tariffs do not include them by default.
- The quality of VoLTE is already high enough for everyday calls.
If your Xiaomi supports 5G (like the POCO F4 GT or Xiaomi 12 Pro), you can try to activate VoNR, but be prepared for possible problems with communication stability – the technology is still in the development stage.
Xiaomi VoLTE Problems and How to Solve Them
Even after setting up VoLTE correctly, Xiaomi users can face a range of problems, from a missing icon to communication breakdowns. Here are the most common faults and ways to fix them:
⚠️ Note: If after the update MIUI VoLTE stopped working, don't rush to reset. First check if the settings are lost. APN. To do this, go to the Settings. → SIM-map → Access points (APN) Compare them to your operator’s recommendations.
| Problem. | Possible cause | Decision |
|---|---|---|
| VoLTE badge flashes and disappears | Unstable 4G coverage | Manually select network: Settings → Mobile network → Network mode → LTE only |
| Calls stop in 10-20 seconds. | Conflict with Wi-Fi Calling | Disable Wi-Fi Calling in Settings SIM-map |
| No sound when VoLTE calls | Codec failure | Reset network settings or update firmware |
| VoLTE only works on one SIM. | Limitation of the hardware platform | Change. SIM-Cards in places (slot 1 has priority) |
If none of these methods worked, try resetting your network settings:
- Go to Settings. → SIM-maps and mobile networks.
- Click Reset Mobile Network Settings.
- Confirm the action and restart the smartphone.
In extreme cases, flashing may be required (for example, on MIUI EU), but this step is recommended only for advanced users.
VoLTE and battery: does the technology affect the autonomy of Xiaomi
One of the common myths about VoLTE is that it drains the battery a lot, and it really depends on the implementation of the technology in the specific Xiaomi model and MIUI version.
- ⚡ On smartphones with Snapdragon 8 Gen 2 processors (such as Xiaomi 13 Ultra), VoLTE has little impact on autonomy thanks to an optimized modem. X65.
- ⚡ On budget models (Redmi) 10A, POCO M4 Pro) battery consumption may increase by 5-10% It is a less efficient chipset (Helio). G88, Snapdragon 680).
- ⚡ Bad signal. 4G Smartphones spend more energy on maintaining a VoLTE connection than with stable coverage.
To minimize the impact of VoLTE on the battery:
- 🔋 Turn off the function if you are in a weak coverage area 4G (e.g. in the subway or outside the city).
- 🔋 Use the charge saving mode in Settings → Battery, but note that it may limit the quality of communication.
- 🔋 Update the firmware - in new versions MIUI Often optimize the power consumption of the modem.
If autonomy is critical for you (for example, on long trips), you can temporarily turn off VoLTE and return to traditional 3G calls. However, please note that in this case you will lose the ability to talk and use mobile Internet at the same time.