Modern smartphones automatically switch between cellular and Wi-Fi networks to ensure uninterrupted connectivity, but sometimes the VoWiFi (Voice over Wi-Fi) feature can be inconvenient. Users often encounter situations where incoming calls are routed exclusively through the internet connection, ignoring the SIM card, which can lead to unexpected charges or problems with sound quality. The question of how to block Wi-Fi calls becomes especially relevant if your home router is unstable or you're roaming.
In this article, we'll take a detailed look at how the technology works, how to force a switch to a mobile network, and hidden operator settings. You'll learn how to manage connection priorities to voice communication Always go through your SIM card, not through internet protocols. Understanding these processes will help you avoid missing important calls and save data.
Many device owners aren't even aware that they accidentally activated this option or that it was enabled after a system update. We'll cover scenarios for the most popular operating systems and phone models so you can quickly regain control of your device. Below are proven deactivation methods that work with current software versions.
Why does my smartphone use Wi-Fi instead of a SIM card for calls?
VoWiFi technology is designed to improve coverage in areas where cell tower signal is weak but stable internet is available. Telecom operators This feature is actively promoted because it reduces the load on base stations and allows subscribers to stay connected in basements or hidden corners of buildings. However, smartphone algorithms often prioritize this channel, even if the cellular network is working properly.
The main reason for the switch lies in the power consumption and signal quality settings. If the phone detects that the LTE or 4G signal strength drops below a certain threshold, it automatically initiates handover (transferring) the call to Wi-Fi. This is standard system behavior designed to prevent connection drops, but it's not always user-friendly.
Additionally, some data plans or corporate SIM cards may have pre-installed profiles that route traffic through secure internet channels. In such cases, disabling this feature in the phone's menu may not help, and accessing the operator's settings may be necessary.
⚠️ Attention: Disabling Wi-Fi Calling may result in complete loss of connection in areas without cellular coverage (such as deep basements or remote cottages). Make sure you have an alternative method of communication before changing settings.
It's important to understand the difference between calls via messengers (WhatsApp, Telegram) and the system VoWiFi function. The former requires an app installation and only works with an open internet connection, while the latter is built-in. dialer phone and use your SIM card number. It's this system function that we'll be disabling.
Disabling VoWiFi on Android: General System Settings
In the Android operating system, the path to call control may vary depending on the version of the shell and the device model. Most often, the required option is located in the SIM card settings section or in the connections menu. To get started, open Settings and find the item Connections or Mobile network.
Here you'll need to find the switch labeled "Wi-Fi Calling." If it's enabled, simply tap it to disable it. In some cases, the system may ask you to confirm this action, warning you of possible deterioration in connection quality in areas with poor reception.
If the standard path doesn't work, try searching through the settings. Enter "Wi-Fi" or "Calls" in the search bar, and the system will automatically suggest the location of the required toggle switch. This is especially useful for devices with custom skins, where the menu can be heavily customized.
- 📱 Open the menu
Settingsand go to the sectionConnections. - 🔍 Find the item
Wi-Fi callingand move the switch to the position Off. - 🔄 Restart your device to apply the changes and check the network priority.
- 📶 Make sure that the phone icon with the Wi-Fi symbol has disappeared from the status bar.
It's worth noting that on some devices, this option may be hidden in the "Advanced" menu within the settings for a specific SIM card. If you have a dual-SIM phone, you'll need to check for each card separately, as the settings may vary.
Instructions for Samsung Galaxy and One UI users
Samsung smartphones have their own unique menu system, which often confuses users accustomed to stock Android. Here, call settings are located in a separate app menu. To disable Wi-Fi calling, open the default app. Telephone (green tube) and click on the three dots in the corner of the screen.
From the drop-down menu, select SettingsIn the list that opens, look for "Wi-Fi Calling." If it's enabled, the system will attempt to connect using the internet. Toggle the slider to the off position. You may also be able to select a preferred network: "Prefer mobile network" or "Prefer Wi-Fi network." Select the former.
For Galaxy S and Note series models, the layout of elements may vary slightly. Sometimes you need to go to the general Settings smartphone, then in Connections -> Wi-Fi callingThe One UI interface is constantly being updated, so the visual design may change, but the logic remains the same.
Owners of corporate devices should be aware that the administrator can block the ability to change these settings via MDM profiles. In this case, the slider will be grayed out and inactive, requiring contacting the company's IT department.
iPhone Settings: Managing Calls in iOS
In the Apple ecosystem, Wi-Fi Calling controls are centralized and accessible through the cellular menu. To disable internet calling on your iPhone, go to Settings and select a section Cellular communicationsHere you will see a list of all installed SIM cards (if there are several).
Click on the desired SIM card, then find the item Wi-Fi callingTurn the switch off. iOS is known for its stable operation of this module, but sometimes it requires a reboot to clear the network settings cache.
If you're using an iPad with SIM card support, the settings will be similar.
- 🍎 Go to
Settings->Cellular communications. - 📞 Select your SIM card and find
Wi-Fi calling. - 🚫 Deactivate the feature and confirm the action in the pop-up window.
- 🔄 Check the status in the "Control Center" - the Wi-Fi Calling icon should disappear.
⚠️ Attention: On iPhone, disabling this feature may affect emergency calling (E911) in some areas where address resolution is via Wi-Fi.
iOS users are also advised to check the settings in the section Main -> Reset -> Reset network settingsIf the shutdown isn't applied correctly, this action will reset all network settings to factory defaults but will not delete your personal data.
Specifics of Xiaomi, Huawei, and Honor (MIUI, EMUI, HarmonyOS)
Chinese manufacturers often hide important network settings deep in menus or conceal them in engineering modes. In MIUI (Xiaomi, Redmi, POCO) and similar HyperOS skins, the path usually lies through Settings -> Wi-Fi -> Wi-Fi calling.
However, depending on your firmware region (Global or Chinese), this option may be missing. If you don't see this option, try searching for "Wi-Fi Calling" in the settings. On Huawei and Honor devices with EMUI and MagicOS, the logic is similar: Mobile network -> Wi-Fi calling.
Interesting fact: on some Honor models, this feature may be tightly linked to the "My Operator" app or a similar service center built into the system. In this case, it can be controlled through it.