Modern smartphones based on Android are equipped with many features designed to improve connection quality, but sometimes they create more problems than solutions. One such technology is VoWiFi (Voice over Wi-Fi), which allows calls to be made over a wireless network instead of a cellular one. While in theory this should ensure stable voice quality in areas with poor reception, in practice users often experience an inability to receive text messages or sudden call interruptions when switching between networks.
Disabling this option may be necessary in various situations, from simply saving battery power to resolving conflicts with corporate Wi-Fi networks where VoIP traffic is blocked by the administrator. The process of disabling it isn't always obvious, as equipment manufacturers often hide the necessary switch deep in menus or hide it from the user entirely. Understanding how to manage this setting gives you complete control over your device's network behavior.
In this guide, we'll cover all known methods for disabling this feature, including default settings, hidden engineering menus, and third-party utilities. You'll learn why this feature can interfere with your phone's normal operation and how to force your smartphone to use only the cellular network for voice calls, even if Wi-Fi is active.
What is VoWiFi and why should you disable it?
VoWiFi Voice over IP (VoIP) is a technology for transmitting voice over IP (VoIP) protocols over Wi-Fi networks. Essentially, your phone uses the internet channel for the voice connection, bypassing cellular base stations. This is convenient in basements, country houses, or offices with thick walls where the LTE signal is weak but a stable Wi-Fi router is available.
However, there is a downside to this. Many users report that when VoWiFi is active, they stop receiving calls. SMS messages with confirmation codes from banks, as operators often route them only through the cellular network. Additionally, on some smartphone models, for example Samsung or Xiaomi, activating this function results in increased energy consumption, since the Wi-Fi module operates in a constant high load mode.
⚠️ Important: Before disabling this feature, make sure you have a strong cellular signal indoors. If you're in a "blind spot" (like a bunker or basement), disabling VoWiFi may completely cut off your connection.
Another common issue is incorrect switching between networks. The phone may "catch" a weak Wi-Fi signal at the edge of the coverage area, ignoring a stable 4G/LTE connection, resulting in poor sound quality. In such cases, forcing the phone to switch to a cellular network resolves the issue immediately.
The standard way to disable it is through Android settings.
The easiest and safest deactivation method is to use the operating system's default interface. The menu layout may vary depending on the version. Android and the manufacturer's shell, but the general procedure remains similar. Typically, the required switch is located in the section responsible for the mobile network or SIM cards.
To access the settings, you need to open the main menu and select the item Settings. Further the path may vary: on clean Android (Pixel, Motorola) this is often a section Network and Internet → Mobile Network, and on devices Samsung or Huawei you need to look for a subsection Connections or Additional settingsLook for the line that says "Wi-Fi Calling."
☑️ Setting search algorithm
If you find the switch, simply toggle it to the off position. The system may ask you to confirm this action, warning you about possible deterioration in connection quality in areas with poor reception. Accept this if you specifically want to disable the feature. After this, the handset icon with the Wi-Fi symbol should disappear from the status bar.
In some cases, even after turning off the switch, the phone may continue to use Wi-Fi for calls if Smart Switching is enabled. Check if there is a check mark next to it. Wi-Fi Preference, and remove it so that priority is always given to the cell tower.
Instructions for different smartphone manufacturers
Electronics manufacturers often modify the interface Android, adding your own shells such as MIUI, One UI or ColorOSThis means the path to VoWiFi settings may differ significantly from the standard path. Below is a table showing the paths for the most popular brands.
| Brand / Shell | Path to setup | Nuances |
|---|---|---|
| Samsung (One UI) | Settings → Connections → Wi-Fi Calling | May be hidden if SIM card does not support |
| Xiaomi (MIUI/HyperOS) | Settings → SIM cards and mobile networks → Wi-Fi calling | Often missing from the menu without activation through the engineering menu |
| Huawei / Honor | Settings → Mobile Network → Wi-Fi Calling | On some models it depends on the firmware region |
| Sony Xperia | Settings → Network & Internet → Mobile network → Wi-Fi calling | The interface is close to stock Android. |
On devices Xiaomi And Redmi Users often encounter a situation where the menu item simply isn't available. This is due to regional firmware restrictions. Owners of such devices may need to change the region in the settings (Additional → Region) to India or Singapore for the menu to appear, or use more complex methods through the engineering menu.
From the owners Samsung The situation is reversed: the feature is often enabled by default and is persistently prompted to activate when you first start the phone. If you accidentally opted in, you can only disable it by following the steps in the table. It's also worth noting that on dual-SIM phones, the setting is applied separately for each SIM card.
Why don't some phones have this setting?
The absence of a menu item is often due to the fact that the telecom operator has not certified the VoWiFi service for this device model or the firmware has regional restrictions (for example, the version for China or India).
Using the Engineering Menu for Advanced Users
If you cannot disable the function using standard methods, you can use engineering menu (Engineering Mode). This is a hidden system section designed for testing hardware and configuring network settings. It is accessed via a special code in the Phone app.
For most processors MediaTek (used in Xiaomi, Meizu, Oppo) you need to type a command ##3646633##For processors Qualcomm (many Sony, HTC, old Samsung) the code may differ, for example ##4636##After entering the code, the service menu will open.
In the interface that opens, you need to find the tab Telephony or Phone. Next, you should go to the section VoWiFi or IMSHere you will see a switch Enable VoWiFi. Move it into position Disable. Use extreme caution: changing other parameters in this menu may result in unstable operation of the communication module.
⚠️ Warning: Accessing the engineering menu and changing IMS/VoWiFi settings is at your own risk. Incorrect configuration may require resetting network settings or reflashing the device.
After changing this setting, be sure to reboot your device. If the VoWiFi icon disappears after rebooting and calls are now possible over LTE, the change was successful. In some cases, you may need to repeat the process for each SIM card separately if you have two.
Hiding a function using ADB commands
For users who are not afraid of the command line, there is a way to hide or disable the VoWiFi feature via USB debugging (ADB). This method is universal and works on most devices with or without root rights, allowing you to change hidden system configurations.
First, you need to activate the developer mode on your phone (tap the build number seven times in About the phone) and turn on USB debuggingThen connect your smartphone to your computer and enter the command to test the connection. If everything is correct, you can use the commands to change global settings.
adb shell settings put global ims_volte_enable 0Or an alternative command that works on some firmware versions:
adb shell settings put global carrier_volte_available 0These commands force the system to report that the device or carrier does not support VoLTE/VoWiFi, causing the corresponding menu items to disappear and functionality to be disabled. To restore everything as it was, replace 0 on 1 at the end of the command.
The influence of the telecom operator and SIM card
It is important to understand that the ability to use and, accordingly, disable VoWiFi depends not only on the phone, but also on the policy of your telecom operatorSome carriers block this feature at the network level unless it's purchased separately or included in your plan.
Furthermore, the SIM card itself must be new enough and support IMS profiles. If you're using a very old SIM card cut to the mini-SIM format, the feature may not work correctly. In such cases, replacing the SIM card with a new one at a carrier store often resolves the "phantom" activation issue.
It's also worth keeping in mind that settings can be reset when updating your carrier profile. If you disabled VoWiFi but it re-enables itself after a while, check if your provider has sent you a notification about network settings.
Frequently Asked Questions (FAQ)
Does disabling VoWiFi affect the sound quality of regular calls?
No, this does not affect the sound quality of regular calls over a cellular network (GSM/3G/4G). However, if you are in an area with no or extremely weak cellular service but Wi-Fi is available, disabling VoWiFi may prevent you from making calls until you move to an area with strong coverage.
Do operators charge extra for VoWiFi calls?
In most cases, you'll be charged according to your primary plan, meaning minutes are consumed from your bundle. However, if you're roaming, the rules may differ: a Wi-Fi call may be counted as an incoming/outgoing call from your home network, which is beneficial, but it's best to check with your specific carrier before traveling.
Can VoWiFi drain your battery faster?
Yes, in some scenarios. If the Wi-Fi signal is unstable, the communication module operates at increased power, attempting to establish a voice connection, which results in additional battery drain. Disabling this feature in such cases extends battery life.
What should I do if incoming calls disappear after disconnecting?
This is rare, but possible. Try restarting your device. If that doesn't help, check if "Do Not Disturb" or "Airplane Mode" is enabled. Also, make sure the "Wi-Fi Calling Only" switch (if enabled) is disabled.
Does VoWiFi work without an internet connection on Wi-Fi?
Technically, an internet connection isn't required to establish a connection; you only need access to the operator's gateways. However, if the router isn't connected to the global network or blocks certain ports, the call may fail. Typically, a connection to an access point is all that's required, even without internet access.