Xiaomi Poco X3 VoLTE: How to turn on in 5 minutes and why it matters

What is VoLTE and why it should be activated on Poco X3

VoLTE Technology (Voice over) LTE) It drastically changes the quality of voice communication, transferring it from outdated 2G/3G-modern-day networks 4G-For owners of Xiaomi Poco X3 This means not only crystal clear sound without noise, but also lightning fast connection – call the subscriber now takes less than a second instead of the usual ones. 3-5. VoLTE allows you to simultaneously talk and use the mobile Internet without switching to the Internet. 3G, as it happened before.

But many users don't even know that their Poco X3 supports this technology, but it's disabled by default. The reasons range from firmware to operator settings. In this article, we'll break down the unique VoLTE activation algorithm for the Poco X3, taking into account all the nuances of the model, from checking hardware support to manually enabling hidden parameters, and learn how to make the technology work even if the operator "does not see" it in the settings.

Important: VoLTE on Poco X3 only works with SIM-The cards that support the technology, the Beeline, MTS and Tele2 It's all modern. USIM-cards (issued after 2018), and MegaFon has Nano-SIM cards with a logo 4G+. If you SIM You will have to replace it for free in the cabin.

Check VoLTE support on your Poco X3

Before you try to turn on VoLTE, you need to make sure that your smartphone supports this feature at all. On Xiaomi Poco X3 (model M2007J20CG for the global market or M2007J20CI for India), there is always hardware support, but it can be blocked:

• 📱 An outdated version MIUI (below 12.0.3)
• 📶 A communications provider that does not provide VoLTE in your region
• 🔧 Wrong settings IMS (IP Multimedia Subsystem)
• 🛠️ Castom firmware or unlocked loader

To check for support:

1. Open the phone app and dial the combination: ##4636##
2. In the menu that appears, select Phone Information
3. Scroll down to the VoLTE provisioned block. If it's 1, support is available, if 0 is not available, or it's locked.

If there is no item about VoLTE in the test menu, it means:

• 🔄 Your firmware is very outdated (you need an update)
• 🔧 In the developer settings, access to the test menu is disabled (include in Settings). → The phone. → Version. MIUI, tap 7 times)

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On some of the Poco X3 firmware, the VoLTE option is hidden. Try typing the ##86583## command in the engineering menu, which is an alternative path to IMS settings.

Step-by-step: how to turn on VoLTE on Poco X3

If the check shows that support is available, we move to activation. X3 This is done in 3 stages: setting up SIM-maps, inclusion of the function in the menu and, if necessary, manual activation through the engineering menu.

Step 1: Set-up SIM-map

VoLTE only works on the main SIM-card (slot 1) if you have two SIM:

1. Go to Settings. → SIM-maps and mobile networks
2. Select the SIM you want to activate VoLTE for
3. Make sure that the network settings are 4G (preferably) or 4G only.

Step 2: Enabling VoLTE in the settings

Now activate the function itself:

1. Open the Settings. → SIM-maps and mobile networks
2. Put it on the right one. SIM-map
3. Find VoLTE (can be called Voice over 4G or Enhanced Calls)
4. Switch the slider to the position on.

If the VoLTE item is not on the menu:

• 🔄 Update the firmware (see the next section)
• 📱 Try an alternative method through the engineering menu (instruction below)

Step 3: Manually turn on through the engineering menu (if the standard method does not work)

This method requires caution, but often helps when the operator does not see VoLTE:

1. Enter the dialer: ##4636###
2. Select Phone Information
3. Scroll down to Set Preferred Network Type
4. Select LTE only or LTE/TD-SCDMA/GSM auto
5. Go back to the main menu and select IMS Service Status.
6. Enable VoLTE and Enable WFC (Wi-Fi Calling)
7. Reboot the phone.

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Once you manually activate VoLTE, the 4G icon may disappear from the status bar through the engineering menu, which is normal, and the main thing is that when you call in the top corner, you will see the words "HD" or "VoLTE".

Firmware Update: Why it's Critical for VoLTE

One of the main pitfalls in activating VoLTE on the Poco X3 is outdated firmware. MIUI version below 12.0.3 does not support VoLTE on this model, even if the hardware is fine. Moreover, some regional firmware (for example, Indian or European) may block the function due to agreements with local operators.

To update:

1. Go to Settings → About the phone → System update
2. Click Check for Updates
3. If a new version is available, download and install it.

If the update doesn't come in:

• 🌍 Check the firmware region: Settings → Additionally. → For Russia, there must be Russia, for Europe — EEA.
• 🔧 Try changing your region to India (there VoLTE works more stable), then go back to your own.
• 📥 Download the latest firmware manually from the Xiaomi Firmware website and install via System Update → Three points. → Select a firmware file.

After the update, don't forget:

1. Reset network settings: Settings → SIM-map → Resetting network settings
2. Reboot the phone
3. Re-enable VoLTE in the settings SIM-map

Poco X3 VoLTE Problems: Causes and Solutions

Even after setting up properly, VoLTE may not work.-5 causes and solutions:

1. VoLTE icon is there, but calls are made via 3G Check if traffic saving mode is on: Settings → Battery → Saving mode. Turn it off - it forcibly transfers calls to 3G.
2. VoLTE turns on, but after a day it disappears It's a firmware bug. Solution: turn off automatic network selection in Settings → Mobile Network → Network selection and manually select your operator.
3. When you call, the sound is interrupted. In the engineering menu (#4636##), select Audio → VoLTE Codec and install AMR-WB instead of EVS.
4. Use the 4G VoLTE Switch app from the Play Market – it forcibly activates the function even if the operator does not officially provide it.
5. After the update, VoLTE disappeared from the settings Make a network reset: Settings → Memory → Reset → Network settings reset.

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If you have custom firmware installed (e.g. Pixel Experience or LineageOS), VoLTE may not work due to lack of IMS certificates. The solution is to flash the original MIUI or find firmware with built-in certificates for your carrier.

⚠️ Note: On some Poco firmware X3 If you force VoLTE to be enabled through the engineering menu, mobile Internet may disappear. To return it, go to Settings → Mobile network → Network type and select 4G/3G/2G (car instead of only 4G.

VoLTE vs Wi-Fi Calling: What’s Best for Poco X3

Along with VoLTE, Poco X3 also has another advanced call technology, Wi-Fi Calling, which is useful where the mobile network is weak but there is stable Wi-Fi.

On the Poco X3, both technologies can be used simultaneously.

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 will need to confirm the address (for emergency services)

Tip: If you have a problem with 4G coverage but have good Wi-Fi, turn on the priority of Wi-Fi Calling on the engineering menu (#4636## → Wi-Fi Calling → Wi-Fi Preferred).Then the phone will try to connect over Wi-Fi first, and only if it is not, switch to VoLTE.

Hidden VoLTE chips on Poco X3 you didn’t know about

VoLTE on Xiaomi Poco X3 hides a few useful features that are not obvious at first glance:

• 🎤 Real-time noise cancellation: VoLTE calls automatically activate an improved noise suppression algorithm that works better than normal, to check: call another phone and compare background levels.
• 📞 Fast switching between calls. During a VoLTE call, you can hold the Add Call button to instantly switch to a second caller (without waiting for a connection).
• 📊 Communication quality statistics: The engineering menu (#4636##) has a hidden section called VoLTE Stats, which shows signal strength, latency, and packet loss during a call.
• 🔄 Automatic fallback on 3G. If during the VoLTE call a signal is 4G Going missing, Poco X3 switching over 3G without a connection break (unlike normal calls where a break occurs).

Another little-known trick is that if you have VoLTE enabled, video calls through the standard Phone app will go in improved quality (up to 720p instead of 480p), which only works between subscribers of a single operator that supports ViLTE (Video over LTE).

⚠️ Note: On some Poco firmware X3 Active VoLTE is disabled support 5G (If you are using modified software with support 5G). This is due to the module conflict. IMS and NR (The solution is to select mode in the network settings. 4G/5G auto instead of just 5G.

FAQ: Frequent questions about VoLTE on Xiaomi Poco X3