VoLTE on Xiaomi: How to turn on and configure in 5 minutes

Did you just buy a new Xiaomi and find that calls go through an outdated 3G standard and the quality of communication leaves much to be desired? Or maybe your carrier has already disabled 2G/3G support, and without VoLTE you risk being left without mobile communication? Don't rush to blame the smartphone - in 90% of cases the problem lies in the non-activated voice data function.

Voice over LTE (VoLTE) technology allows you to call over 4G, providing crystal clear sound, instant connectivity and the ability to talk and use mobile Internet at the same time. However, on Xiaomi smartphones (including the sub-brands Redmi, Poco and Black Shark), this feature is often disabled by default. In this article, we will discuss the unique nuances of VoLTE activation on MIUI, which you will not find in the instructions for other brands, from hidden settings to solving problems with “gray” firmware.

What is VoLTE and why should it be included in Xiaomi

VoLTE is a fourth-generation voice technology, and unlike traditional calls that switch a smartphone to 3G/2G, VoLTE runs on top of 4G, which has three key benefits:

• 🎙️ Sound quality HD — sampling rate up to 16 kHz (vs. 8 kHz y) 3G), which eliminates noise and echo.
• ⚡ Instant connection – the time of setting the call is reduced by 5-7 second 1-2.
• 🌐 Parallel Internet – you can simultaneously talk and download files, watch videos or play online.

On Xiaomi smartphones, VoLTE support is implemented at the hardware level, starting with the Qualcomm Snapdragon 400 series processors and the MediaTek Helio P-line. However, even on flagship models like the Xiaomi 14 Ultra or Redmi K70 Pro, the function can be disabled by default due to:

• 📦 Regional restrictions – firmware for China often lacks VoLTE for other countries.
• 🔄 Operator Updates – some mobile networks (e.g, Tele2 in Russia) require manual activation.
• 🛠️ Castom firmware - unofficial versions MIUI They can “break” support for VoLTE.

⚠️ Note: If your Xiaomi is purchased in China (market version) CN), There is a high risk that VoLTE will not work with the Russian SIM-And then you're going to need to run a global version of the firmware. MIUI.

Checking VoLTE support for your Xiaomi

Before you turn on the feature, make sure your smartphone and carrier support it.

1. Check the processor model: Open Settings → About Phone → All specs. Find the “Processor” string – if it’s Snapdragon (starting at 425/430) or MediaTek (Helio P/G/D series), VoLTE is available.

supporter

If your carrier is on the list but VoLTE is not working, check out the MIUI version:

• Up-to-date firmware (MIUI 14+) supports VoLTE out of the box.
• Older versions (MIUI 12 and below) may require manual activation.

Method 1: Enabling VoLTE through standard MIUI settings

This is the simplest method that works on 80% of Xiaomi smartphones with official firmware.

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Tapping on LTE Calls (VoLTE) or Improved Calls.
4. Switch the slider to the "On" position.

If there is no VoLTE item on the menu, try an alternative path:

Settings → Additional → Mobile Network → Network Mode → Preferred Network Type → LTE/4G/3G/2G (auto)

Make sure that SIM-card 4G|

Update MIUI to the latest version|

Check 4G coverage in your area |

Turn off the "Traffic Saving" mode»-->

⚠️ Note: Some Redmi Note models (e.g. Note 8 Pro or Note) 9S) After turning on VoLTE, mobile Internet may disappear. In this case, restart your smartphone or reset your network settings in Settings → SIM-map → Resetting mobile network settings.

Method 2: Activate VoLTE through the Engineering Menu (for the experienced)

If the standard method didn’t work, try turning on VoLTE through a hidden engineering menu, which is suitable for models on Qualcomm Snapdragon (e.g. Xiaomi 11T Pro, Poco F3).

1. Open the phone app and enter the combination: ##4636##
2. In the menu that appears, select Phone Information.
3. Scroll down to the Installation of your preferred network type block.
4. Select LTE/WCDMA/GSM (auto) or LTE only (if you are confident in 4G coverage).
5. Go back to the main menu and select IMS Testing.
6. Activate options: VoLTE provisioned → Enable IMS over LTE → Enable

After applying the settings, restart your smartphone. If the label HD or VoLTE appears in the status bar next to the network indicator, the function is activated.

Method 3: Manually add APN for VoLTE

If the carrier supports VoLTE but the connection is not established, the problem may lie in the incorrect settings of the APN (access point), which is true for Tele2 and some virtual operators.

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Press Add Add Add. APN and enter the parameters for your operator: MTSBeline MegaFonTele2 Name.MTS VoLTEBeeline VoLTEMegafon VoLTETele2 VoLTE APNinternet.mts.ruinternet.beeline.ruinternetinternet.tele2.ru Type APNdefault,supl,ims,xcapdefault,supl,imsdefault,supl,imsdefault,supl,ims ProtocolIPv4/IPv6IPv4IPv4/IPv6IPv4
3. Save the settings and restart the smartphone.

After the reboot, check if the HD or VoLTE icon appears in the status bar. If not, delete all other APNs, leaving only the manually created one.

💡

If, after the change, APN Mobile Internet disappears, return the standard settings: go to Settings → SIM-map → Reset mobile network settings and confirm reset.

Method 4: Firmware global version of MIUI for VoLTE

If your Xiaomi is purchased in China (market version) CN), There is a high probability that VoLTE will not work with the Russian SIM-In this case, the firmware of the global version will help. MIUI (Global ROM).

Warning: the process requires unlocking the bootloader and can lead to loss of warranty. If you are not sure about your abilities, contact the service center.

1. Unlock the bootloader through the official Xiaomi tool (you will need a Mi Account).
2. Download the Global Stable ROM firmware for your model from MIUI Download.
3. Install firmware via Mi Flash Tool (PC instruction) or TWRP (power users).

If the problem is not solved, try:

1. Insert SIM-card to another smartphone and check the work of VoLTE (so you eliminate the problem of the operator).
2. Reset network settings (Settings) → SIM-map → Resetting mobile network settings).
3. Call for support from the operator to link IMS-profile.

💡

If VoLTE doesn't work after all the manipulations, it could be because your model is not compatible with the network of the operator, and then you have to either accept it. 3G-call or change operator.

FAQ: Frequent questions about VoLTE on Xiaomi