Where and how to disable VoLTE on Xiaomi smartphones: hidden settings MIUI

Why do users want to disable VoLTE and when do they need to?

VoLTE (Voice over LTE) has become the standard for today’s 4G/5G networks, promising clearer connectivity and faster connectivity. However, in practice, Xiaomi smartphone owners – from the budget Redmi Note 12 to the flagship Xiaomi 14 Ultra – face challenges such as sudden call interruptions, deteriorating sound quality or conflicts with operators. Paradoxically, disabling VoLTE can improve communication stability in regions with unstable LTE coverage, despite marketing claims about the benefits of the technology.

The situation is complicated by the fact that MIUI (Especially in versions 13-14) hides direct VoLTE settings behind a layer of abstraction, which the manufacturer motivates by "optimizing the user experience", but in fact this leads to confusion: somewhere the option is available on the menu. SIM-In this article, we will discuss all the current ways to disable VoLTE on Xiaomi, including models with HyperOS, and also analyze in which cases it is really justified.

Before you get to the instructions, answer the key question: Is your problem related to hardware incompatibility (for example, your smartphone does not support your operator’s VoLTE) or software bugs (calls are broken, although there is a signal)?

Official method: disabling VoLTE through settings SIM-map

The most obvious way is to use the standard MIUI menu, but here's the nuance: the interface differs depending on the firmware version and the smartphone model. For example, on POCO F5 with HyperOS, the path will be one, and on Redmi 10C with MIUI 12.5 - another.

1. Open the Settings app (cog icon).
2. Go to section. SIM-Maps and mobile networks (or mobile networks on some models).
3. Choose. SIM-The card you want to disable VoLTE for (if you have dual-SIM).
4. Find Calls for VoLTE, VoLTE, or Improved Calls, and on some firmware, it may be hidden behind the option of Additional Settings.
5. Turn the slider to the off position. or uncheck the tick.

If VoLTE is not on this menu, don’t panic, your carrier may have forced the network-level technology to activate (MTS, Beeline, and Tele2 in some regions), in which case only a call to support you to turn off the service on your number will help.

Hidden settings: engineering menu and codes to disable VoLTE

When standard methods fail, the engineering menu, a tool for deep tuning the communication module, comes to the rescue. Careful: the wrong actions here can lead to the loss of a network or even a soft-brick device. If you are not sure, skip this section.

To open the engineering menu on Xiaomi, use one of these codes in the Phone app:

##4636##
#86583## (for some POCO models)
##2254## (Volte status check)

Once you enter the code, you will be taken to the Testing or Phone Information menu.

1. Select Phone Information (or Phone Information in English firmware).
2. Scroll down to the Set preferred network type block.
3. Select LTE/3G/2G (auto) or 3G only mode – this will disable VoLTE forcibly.
4. On some models (Xiaomi 13T, Redmi K60) you need to additionally disable the option Enhanced 4G LTE Mode or VoLTE Provisioned Flag.

⚠️ Note: HyperOS firmware (2026) may have the engineering menu blocked. If nothing happens after you enter the code, try using the app. MTK Engineering Mode (for MediaTek chips) or Qualcomm Service Menu (for Snapdragon) from Google Play!

The alternative method is the use of ADB-Connect your smartphone to your PC, turn on Debugging. USB and do it:

adb shell settings put global volte_enabled 0


adb shell settings put global enhanced_4g_lte 0

VoLTE and Dual-SIM: features of the disconnection on two sims

If your Xiaomi supports two of your SIM-Cards (e.g. Redmi Note 12 Pro)+ or POCO X5 Pro, it is important to understand that VoLTE settings can be duplicated or conflicted. Operators often link VoLTE to the main one only. SIM-card (slot 1), while the second remains on the 3G. This leads to the fact that calls from the second SIM can go with a delay or worse quality.

To disable VoLTE selectively:

• 📱 For the first. SIM: Use the standard path from the "Official Way" section".
• 🔄 For the second. SIM: In the engineering menu (#4636##) select the second one. SIM In the drop-down list and repeat the steps.
• 🚫 Operator Conflict: If You Have a SIM different operators (for example, MTS and Iota), one of them can force VoLTE.

⚠️ Note: On some models (Redmi) 9A, POCO M4 Pro) after disabling VoLTE on one SIM The second one may stop catching the net. 4G. This is a firmware bug that can only be fixed by updating or resetting settings.

Consequences of VoLTE Disconnection: What We Lose and What We Get

Before you turn off VoLTE, evaluate the pros and cons. The technology doesn't just improve call quality - it affects the speed of switching between voice and data, battery consumption and even the performance of messengers during a conversation.

Cons of VoLTE shutdown:

• 📉 Quality of communication: in areas with poor 3G/2G Covered calls may be interrupted or made with noise.
• ⚡ Battery: paradoxical, but on some models (Xiaomi) 12T) Disabling VoLTE increases battery consumption due to constant switching between networks.
• 🔄 Delays: Connection installation time can increase from 1-2 seconds to 5-10 seconds.

The benefits of VoLTE shutdown:

• 📶 Stability: in regions with unstable LTE The calls will stop.
• 🔋 Heat: the communication module will be less warm (relevant to Snapdragon 8 Gen 2).
• 🛡️ Privacy: VoLTE uses the IMS-A protocol that is theoretically vulnerable to interception (although the risk is minimal).

💡

Before disabling VoLTE, check your carrier’s coverage in your region on map.mts.ru (for MTS) or similar services. If 3G/2G zones are marked as “unstable”, it is best to leave VoLTE on.

A special case is roaming. Many operators (like MegaFon) in roaming forcibly turn off VoLTE, transferring subscribers to 3G. If you travel often, test the connection before turning off the technology.

VoLTE and custom firmware: what to do on unofficial software

Users of custom firmware (LineageOS, Pixel Experience, ArrowOS) face unique challenges: VoLTE can either not work at all or be turned on by default without the possibility of turning off, due to the fact that custom builds often use “universal” modems that are not optimized for a particular operator.

If you are using unofficial software, try:

1. Install the modem from the original MIUI firmware via Fastboot: fastboot flash modem modem.img fastboot flash fsb fsb.img
2. Use the Network Signal Guru app (requires root) to force VoLTE to shut down.
3. Edit the build.prop file by adding a line: persist.radio.volte_available=false

On HyperOS firmware (2026), VoLTE is managed via IMS Service to disable:

1. Activate Developer Mode (7 times click on the MIUI version in the settings).
2. Turn on USB debugging and connect to the PC.
3. Follow the command: adb shell pm disable-user --user 0 com.android.ims

⚠️ Note: On some custom firmware, disabling com.android.ims can result in a complete loss of the ability to call.Before experimenting, back up through TWRP!

Alternatives to VoLTE: Wi-Fi Calling and other technologies

If you have disabled VoLTE due to poor communication quality, consider alternatives:

• 📶 Wi-Fi Calling: allows you to call over Wi-Fi, which is useful in areas with poor mobile signal. → SIM-map → Wi-Fi Calling.
• 🔄 3G/2G Priority: in the Engineering Menu (##4636##) choose WCDMA preferably GSM only.
• 📱 Messengers: WhatsApp, Telegram or Viber for voice calls over the Internet (but this will not replace conventional calls).

Wi-Fi Calling has its own nuances:

• ✅ It works even if there is no mobile network.
• ❌ It may not be supported by your operator (check the website).
• ⚠️ Some models (Redmi 10) may have conflicts with VoLTE and Wi-Fi Calling at the same time.

Frequent Mistakes and How to Avoid Them

When you turn off VoLTE, Xiaomi users often make mistakes that lead to even more communication problems.

1. Turn off LTE completely. Don't confuse VoLTE with LTE. If you select 3G only, the Internet will slow down, and VoLTE may still be active.
2. Ignoring updates. In MIUI 14 and HyperOS, VoLTE bugs are often patched. Before you turn off, check for updates in Settings → About Phone → System Update.
3. Reset settings without backup. If VoLTE is lost after the shutdown, don't rush to reset the settings. First, restart your smartphone and check. APN (Path: Settings → SIM-map → Access points (APN)).

Another common problem is the conflict with VPN. If you use VPN-applications (e.g. NordVPN or ProtonVPN) can block IMS-traffic required for VoLTE. Solution:

• Add an exception for com.android.ims in the VPN settings.
• Or turn off the VPN before calling.

💡

If VoLTE has stopped calling after you shut down, check if In-Air mode is activated in the settings or through the notification panel, which is the most common reason for the network to disappear.

FAQ: Answers to Frequent Questions