Modern smartphones Xiaomi offer a variety of advanced features to improve connection quality, but not all of them work correctly in every region. One such option is VoWiFi (Voice over WiFi), which allows you to make calls over an internet connection. For many users, this is a lifesaver in areas with poor reception, but for others, it's a source of constant problems switching between networks.
Sometimes a phone relies on a weak router signal instead of a stable cellular network. This can lead to incoming calls not being received or being dropped. This is when the device owner faces the question of how to disable WiFi calling on a Xiaomi device to restore mobile network priority.
In this article, we will examine in detail the algorithms of actions for different versions of the shell. MIUI And HyperOSYou'll learn where to look for hidden settings, how to use the engineering menu, and what to do if standard methods don't work. Understanding these processes will allow you to fully control the operation of your device's communication modules.
Why are VoWiFi issues occurring on Xiaomi smartphones?Function Wi-Fi Calling was conceived as a way to improve coverage in buildings with thick walls or in remote areas. However, the implementation of this technology on devices Xiaomi Sometimes it conflicts with the SIM card logic of some operators. The smartphone may misjudge the connection quality and force voice traffic to switch to Wi-Fi, even if the 4G/LTE signal is strong enough.
The main difficulty lies in the fact that the priorities of networks in the system Android can be configured so that the wireless network is always considered preferred for voice calls if it is active.
This leads to a situation where you move out of the router's coverage area, and the phone does not have time to quickly switch to a cell tower, and the conversation is interrupted.
In addition, not all operators support the correct operation of this function on all phone models, which causes call statuses to become out of sync.
⚠️ Please note: If your carrier does not officially support VoWiFi, but the feature is activated on your phone, you may experience constant attempts to register to the network, which significantly accelerates battery drain.
Basic shutdown via standard settingsThe easiest and safest way to disable internet calls is to use the standard settings menu. Interface MIUI and new HyperOS It has a uniform structure, although the item names may differ slightly depending on the firmware version. You won't need to install third-party software or obtain root privileges.
First, open your device's main settings menu. Find the section responsible for connecting to the cellular network. In most current versions, it's called "SIM cards and mobile networks." This is where you'll find the main controls for voice communication.
- 📱 Go to
Settings → SIM cards and mobile networks. - 📞 Select the desired SIM card if you have two (settings apply individually to each).
- 🌐 Find the "Wi-Fi Calling" or "Wi-Fi Calling" option.
- 🚫 Turn the switch to the "Off" position.
After completing these steps, the phone should immediately stop using the Internet channel for voice communication.
If you do not find this switch, it may mean that your SIM card does not support the technology, or your operator has hidden this setting.
In some cases, the option may be hidden deep in the "Advanced" menu within the settings of a specific SIM card.
⚠️ Note: On some global firmware versions, the menu may be called "Mobile Network" and the item "Wi-Fi Calling." Localization depends on the region selected when you first turned on your phone.
Using the engineering menu to force shutdownIn situations where the standard interface does not provide the desired result, the engineering menu comes to the rescue AndroidThis is a hidden section of the system designed for hardware testing by engineers. Here, you can manage deeper modem parameters, including forcibly disabling certain types of traffic.
To enter this mode, a special code is used, which is dialed like a regular phone number. On devices Xiaomi This method often reveals settings hidden from the average user. Be careful when changing settings, as incorrect actions may affect connection stability.
##86583##Entering this code will open a hidden menu where you can control the visibility of VoWiFi features.
After entering the command, you will see a message indicating that VoWiFi Carrier Check has been disabled or enabled.
This action removes the operator lock from displaying the settings item in the normal menu, allowing you to control the feature manually.
☑️ Check before entering the engineering menu
Setting network priorities for voice callsEven if Wi-Fi calling is disabled, it's important to prioritize network types correctly. Your smartphone should understand that LTE or 3G is preferable for voice communications, rather than trying to find alternative paths through internet gateways. This is especially important for dual-SIM devices.
The network preference menu often has the "5G/4G/3G/2G (Auto)" mode enabled. For stable voice communication without Wi-Fi interference, it's recommended to ensure experimental modes are not enabled. In some firmware versions Xiaomi There is a separate setting called "Preferred network type" that is worth checking.
| Parameter | Recommended value | Impact on communication |
|---|---|---|
| Network type | LTE preferred | Stable voice and internet |
| VoLTE | Included | High quality sound on a cellular network |
| Wi-Fi Calling | Off | Forced migration to the operator's network |
| Modem mode | Auto | Optimal choice of tower |
Activation VoLTE (Voice over LTE) often solves connection quality issues better than Wi-Fi Calling.
This technology transmits voice over 4G networks, providing crystal clear sound and fast dialing.
With VoLTE enabled, there is little need to switch to Wi-Fi for calls, as LTE coverage is generally wider and more stable.
Hidden settings via the Engineering Menu appThere's a more advanced way to manage network settings that requires installing a dedicated app or using a code to activate the full engineering menu. The standard code discussed earlier only unlocks the settings item. For in-depth diagnostics and disabling system-level services, you may need an app. MTK Engineering Mode (for MediaTek processors) or similar utilities for Snapdragon.
If your Xiaomi If your phone runs on a MediaTek processor, after installing the app, go to the "Telephony" tab. Here you'll find settings related to IMS (IP Multimedia Subsystem). IMS is responsible for transmitting multimedia and voice over IP networks. Disabling the corresponding flags will completely prevent the phone from initiating calls over Wi-Fi.
- 🛠 Open the Engineering Mode app.
- 📡 Select the "Telephony" or "Connectivity" tab.
- 🔍 Find the "IMS" or "VoWiFi Settings" section.
- 🚫 Uncheck the boxes next to “Enable VoWiFi” or “Wifi Preferred”.
The changes take effect immediately, but to be on the safe side, it's best to restart your device.
It is worth noting that on new versions Android Access to these settings may be restricted by ADB permissions.
In this case, you will need to connect to a computer and use debug commands to change system flags.
⚠️ Warning: Making changes to the engineering menu may cause instability in the communication module. If the network connection is completely lost after making these changes, reset the network settings or restore the device to factory settings.
What should I do if the engineering settings menu is empty?
If you see empty fields or error messages when accessing sections of the engineering menu, this means your firmware version is blocking access to this data. In this case, try entering the code ##3646633## (works on many MediaTek devices) or use ADB commands to force open the settings activity.
Resetting network settings as a radical methodIf manually disabling the network doesn't help and the phone continues to persistently attempt to make Wi-Fi calls, it's possible that configuration errors have accumulated in the system. Resetting network settings is a safe procedure that doesn't delete your personal data (photos, contacts, apps), but returns all connection settings to their factory defaults.
After the reset, you'll have to re-enter your Wi-Fi network passwords and configure your Bluetooth devices. However, this ensures that all hidden flags responsible for VoWiFi priority will be reset to their default values, which often leave this feature disabled or configured correctly by default.
To perform a reset, go to Connection and Sharing or Advanced settings.
Find the option "Reset Wi-Fi, mobile networks, and Bluetooth."
Confirm the action and wait for the communication modules to reboot, then check the call functionality.
Frequently Asked Questions (FAQ)
Is it safe to completely disable VoWiFi on Xiaomi?
Yes, it's completely safe for your device. You simply block your phone from using the internet for voice calls, redirecting all traffic to your cellular network. The only downside is that calls may not connect in areas with no cellular signal but Wi-Fi.
Does disabling this feature affect mobile internet speed?
No, your internet speed won't change. VoWiFi uses voice channels, not data. Disabling this feature only changes the voice call route and doesn't affect the bandwidth for apps or the browser.
Why did the Wi-Fi calling switch disappear after updating MIUI?
Firmware updates often change the list of supported carriers or configuration files. If your carrier isn't on the updated compatibility list, the system automatically hides the switch. Entering a code helps in this case. ##86583## to remove the check.
Is it possible to disable Wi-Fi Calling for only one SIM card?
Yes, in dual SIM Xiaomi Settings are applied individually. Go to "SIM cards and mobile networks," select a specific card, and change the call settings for that card only. The second SIM card will remain unchanged.
Does my carrier charge extra for Wi-Fi calls?
Technically, the call is made over the internet, but it's charged as a regular minute on your data plan. However, if you're roaming, the rules may differ: incoming calls over Wi-Fi may be free, while outgoing calls may be charged as roaming calls. Check with your carrier for details.