Modern smartphones offer a variety of features to improve connection quality, and one of the most popular is Wi-Fi Calling. This feature allows you to make voice calls and send text messages over a wireless internet connection, which is especially useful in areas with poor cellular coverage. However, not all users require this feature, and in some cases, it can even interfere with the device's operation or create billing confusion.
Many subscribers encounter a situation where their phone defaults to using the internet connection for calls, ignoring a stable cellular network, which sometimes results in poor sound quality or delays. Furthermore, when traveling abroad, automatically enabling this option can lead to billing issues if their tariff plan doesn't include free internet roaming calls. Therefore, it's important to know how to manage this setting and, if necessary, completely disable it.
In this article, we'll take a detailed look at how VoWiFi works, consider reasons to disable it, and provide step-by-step instructions for iOS and Android smartphone owners. You'll learn how to find hidden settings in the menu, check the connection status, and interpret the indicators on your device's screen. This will allow you to fully manage your costs and connection quality.
Why you should disable Wi-Fi Calling
Although voice-over-the-internet technology is marketed as convenient, in practice, users often encounter technical issues that make them consider disabling it. One of the main problems is connection instability when switching between networks. When you leave the router's coverage area, the phone should immediately switch to the cellular network, but sometimes this process is delayed, resulting in dropped calls. Connection stability in such cases it becomes questionable.
Another important aspect concerns pricing. Some telecom operators may charge different rates for minutes spent using Wi-Fi Calling, especially if you're outside your country of residence. Even if the call is technically "from home," technically the traffic may be routed through gateways that the operator bills separately. Double pricing or unexpected charges are a real risk for travelers who haven't checked their fare conditions.
⚠️ Attention: If you're roaming, be sure to check with your carrier to determine how Wi-Fi Calling is charged. In some cases, a Wi-Fi call may be considered international if the call server is located in another country.
It's also worth mentioning the impact on device battery life. Constantly monitoring Wi-Fi signal quality and attempts to establish a connection for voice calls can consume additional battery power. For older smartphone models, where battery life is already limited, disabling background processes related to VoWiFi, can be a way to extend battery life. Users often notice that after disabling this feature, the phone's battery drains more slowly in standby mode.
Don't forget about privacy. Although modern encryption protocols are quite reliable, using public Wi-Fi networks for important conversations always carries certain risks. By disabling this feature, you ensure that your calls will only go through secure cellular channels, bypassing potentially vulnerable access points in cafes or airports.
Features of VoWiFi technology
Voice over Wi-Fi (VoWiFi) technology is an extension of the IMS (IP Multimedia Subsystem) standard. Simply put, your voice is converted into digital data packets and transmitted over the internet, just like in instant messaging apps, but with higher priority and quality. The telecom operator acts as an intermediary, routing this data stream into the public telephone network. Understanding this principle is important because call quality directly depends on the speed and stability of your Internet connection.
This feature requires support from three components: the smartphone itself, the SIM card, and the carrier's equipment. If even one component doesn't support the technology or is configured incorrectly, the feature won't work. Modern flagship models from Apple, Samsung, Xiaomi and other brands usually have built-in support, but in budget devices the corresponding modules may be missing or software-blocked.
How does a phone choose a network to call?
When "Wi-Fi Preference" is enabled, the phone will always try to use the wireless network for calls, even if the cellular signal is strong. If "Cellular Network Preference" is selected, the device will switch to Wi-Fi calling only when the signal is very weak.
It's important to distinguish between VoWiFi and regular app calls (Viber, WhatsApp, Telegram). With native Wi-Fi calling, you dial a number using a standard dialer, and the other person sees your regular phone number. You don't need the other person to have the same app installed or an internet connection. This makes the technology transparent to the user, but it does require proper setup. authorization on the operator's servers.
The on-screen display may also vary depending on the phone model. Typically, a phone icon with a Wi-Fi symbol or the words "Wi-Fi Call" appear next to the signal strength. However, some firmware versions may not display this indicator, which can lead to confusion: the user might think they're calling over the cellular network, but in fact, the traffic is going through the router. Checking the current status before an important call is a good habit.
How to Disable Wi-Fi Calling on iPhone (iOS)
For smartphone owners from the company Apple lucky in terms of interface unification. Regardless of the model—whether it's an old one iPhone 6s or the newest iPhone 15 Pro — the setup path is almost identical. However, the location of the switches may differ slightly depending on the operating system version. iOS and your specific carrier's settings, which are downloaded along with the profile.
First, open the default Settings app. Find the "Phone" section and tap it. In the menu that opens, look for "Wi-Fi Calling." If your carrier supports this feature and it's enabled on your SIM card, you'll see a toggle. Slide it to the "Off" position. This will immediately prevent your device from using the internet for voice calls.
In some cases, especially with virtual network operators or when using corporate plans, the setting may be located elsewhere. Try following this path Settings → Cellular → Select SIM card → Wi-Fi CallingIf you have two SIM cards in your phone, you need to check the settings for each one separately, as they can operate independently.
☑️ Checking for Disconnection on iPhone
Once the feature is disabled, the corresponding icon will disappear from the status bar. If you're within range of a familiar Wi-Fi network, your phone will continue to use it for internet access (social media, browsing), but all incoming and outgoing calls will be made exclusively through the cellular network. This ensures your minutes are charged according to your primary plan, without the risk of being caught in unmetered zones.
Disabling the feature on Android smartphones
The situation with devices based on Android more diverse due to the availability of many shells from different manufacturers. Samsung, Xiaomi, Huawei Others often change the menu layout, but the logic remains the same. Most often, the setting you're looking for is located under "Connections" or "Network & Internet." Find "Wi-Fi Calling" and disable it.
On smartphones Samsung Galaxy With One UI, the process typically looks like this: open "Settings," select "Connections," then "Wi-Fi Calling." Here, you can not only disable the feature but also select your preferred network. To disable it completely, simply toggle the slider to the off position. On devices Xiaomi (MIUI/HyperOS) The setting is often hidden inside the Phone app: tap the three dots in the corner, select Settings, then Calling Accounts or Wi-Fi Calling.
| Brand / Shell | Path to setup | Nuances |
|---|---|---|
| Samsung (One UI) | Settings → Connections → Wi-Fi Calling | There is a choice of preferred network |
| Xiaomi (MIUI) | Phone → Settings → Wi-Fi Calling | May be called "WLAN Calling" |
| Google Pixel | Settings → Network & Internet → Mobile network | Pure Android interface |
| Huawei (EMUI) | Settings → Wireless & networks → Wi-Fi calling | Requires operator support |
If you can't find the setting in the menu, it's possible your carrier doesn't offer VoWiFi service or hasn't sent the necessary configuration messages to your phone. In this case, the relevant option may simply be missing from the menu. It's also worth checking that the Phone app and Google Play Services are updated, as they are responsible for basic telephony functionality in the system. Android.
Manage the service through commands and your personal account
Sometimes disabling the service in the phone's menu isn't effective, as the service may be forced to activate on the carrier's end. In such cases, you'll need to use USSD commands or your personal account. This is especially true if the phone doesn't allow you to change settings (the menu option is grayed out or missing).
Most major operators have short codes that allow you to manage the service. For example, to deactivate, a combination like *123*456# (The code may vary). After entering the command and pressing the call button, you will receive an SMS notification confirming the successful service status change. You can also send an SMS with a specific text to a short code.
A more reliable method is to use the operator's mobile app or the web version of your personal account. In the "Services" or "Price" section, there's often an "Additional Options" section where you can find "Wi-Fi Calling" and toggle the switch. This ensures that the ban is applied at the network level, and the phone will no longer attempt to initiate such connections.
⚠️ Attention: Personal account interfaces and USSD codes are subject to change by operators without prior notice. If the standard codes don't work, check your operator's official app for the latest information.
Possible problems and solutions
Even after following all the instructions, users may encounter a problem where the feature continues to work or, conversely, cannot be disabled. A common issue is settings caching. The operating system may retain an old connection profile. In this case, simply restarting the device or enabling airplane mode for 10-15 seconds helps, forcing the phone to re-register with the updated settings.
Another issue is profile conflicts. If you have two SIM cards in your phone, disabling Wi-Fi Calling on one will not affect the other. Make sure you've checked the settings for both numbers. It's also worth noting that some enterprise security profiles (MDM) may force this feature to encrypt conversations, and disabling it without administrator rights will be impossible.
If your phone continues to display the Wi-Fi Call icon after disconnecting, check if Data Saver mode or special power-saving modes that could be forcibly rerouting calls are enabled. In rare cases, resetting network settings may help: Settings → System → Reset → Reset Wi-Fi, mobile data, and BluetoothThis will not delete your personal data, but will reset your network settings to factory defaults.
Frequently Asked Questions (FAQ)
Does disabling Wi-Fi Calling affect internet speed?
No, disabling voice calls over Wi-Fi does not affect page loading speed or app performance. The internet connection remains free for other tasks, but the phone no longer prioritizes voice calls.
Do operators charge extra for the feature itself?
In most cases, activation and use of this feature are free, and minutes are charged according to your main plan. However, when roaming, conditions may vary, so it's important to check your plan.
Can you use WhatsApp if you disable Wi-Fi Calling?
Yes, these are different technologies. Disabling native Wi-Fi calling does not affect messaging apps (WhatsApp, Viber, Telegram). You can continue making calls through these apps using an internet connection.
Why did incoming calls disappear after disconnecting?
This is unlikely if your cellular network is working properly. If calls aren't connecting, check to see if Do Not Disturb or Airplane Mode is enabled. Also, make sure you have a cellular signal, as Wi-Fi Calling will no longer compensate for the lack of one.
Do I need to restart my phone after it is turned off?
Recommended, but not required. Restarting helps the phone reset old network registrations and apply new call routing settings. If the icon disappears immediately, a restart is not necessary.