How to Disable Wi-Fi Calling on Android and iPhone in 5 Minutes

Calls via Wi-Fi (or VoWiFi) is a useful feature that allows you to talk even with a weak cellular signal. But sometimes it gets in the way: it messes up settings, uses up data, or conflicts with other services. In this article, we'll look at how to completely disable VoWiFi on any smartphone, including Samsung, iPhone, Xiaomi and other brands, as well as what to do if settings aren't saved or the operator blocks changes.

It's important to understand: disabling VoWiFi won't affect the quality of regular cellular calls, but it can improve connection stability in some scenarios. For example, if you notice audio dropouts or battery drains faster during Wi-Fi calls, this feature is likely the problem. Below are step-by-step instructions for different devices and carriers.

What is VoWiFi and why should you disable it?

VoWiFi (Voice over Wi-Fi) — a technology that allows you to make calls over an internet connection instead of a cellular network. It activates automatically when the mobile signal is weak but Wi-Fi is available. While convenient at first glance, this feature has its drawbacks:

• 🔋 Increased battery consumption — the smartphone constantly switches between Wi-Fi and the cellular network, which increases the load on the processor.
• 📶 Problems with roaming — In some countries, VoWiFi may be unstable or charged according to different rules.
• 🛠️ Conflicts with VPNs and firewalls - If you are using a corporate network or have strict security settings, VoWiFi may be blocked.
• 📞 Connection delays - Sometimes the call first tries to go through Wi-Fi, and then switches to the cellular network, which creates a pause.

In addition, some users complain about Automatically connecting to public Wi-Fi networks (such as in cafes or airports) just for VoWiFi, which creates security risksIf you don't use this feature, it's best to disable it—especially since it can be done in just a few steps.

How to Disable VoWiFi on Android (Samsung, Xiaomi, Google Pixel, etc.)

On most Android smartphones, the VoWiFi setting is located in the SIM card or mobile network menu. The interface may vary slightly depending on the manufacturer, but the general procedure is the same. Let's look at the step-by-step instructions:

1. Open Settings → Connections (or Network and Internet).
2. Select Mobile network or SIM cards and mobile networks.
3. Tap on the name of your SIM card (if you have more than one).
4. Find the item Calls via Wi-Fi or VoWiFi and move the slider to the position Off.

On some devices (eg. Xiaomi Redmi Note 12 or Realme 10 Pro) This item may be hidden deeper in the menu. If you can't find it, try:

• 🔍 In the settings search bar, type “VoWiFi" or "Wi-Fi calling».
• 📱 On Samsung Galaxy (One UI) the path can be: Settings → Connections → Mobile networks → Advanced → Wi-Fi calling.
• 🤖 On "pure" Android (for example, Google Pixel) search for: Settings → Network & Internet → SIM cards → Carrier name → Wi-Fi calling.

Mobile network settings are open|

The "Wi-Fi Calling" option has been found and deactivated.

Reboot your smartphone to apply the changes|

Checked that VoWiFi icon disappeared from status bar-->

If the feature reactivates automatically after disabling, there may be a problem with the firmware or carrier settings. In this case, resetting network settings (more on that below) or contacting your mobile provider's support team will help.

What should I do if VoWiFi is not in the settings?

On some budget smartphones (for example, Tecno or Infinix) the VoWiFi function may be missing at the firmware level. In this case:

1. Check if your operator supports VoWiFi (the list is usually available on the official website).

2. Update your firmware to the latest version—sometimes support appears after an update.

3. If nothing helps, use alternative messengers (WhatsApp, Telegram) for Wi-Fi calls.

Disabling VoWiFi on iPhone (all models)

On iPhone (including iPhone 15 (and older models) VoWiFi can be disabled through the cellular menu. Important: If you're using iOS 16 or later, the interface may differ slightly, but the functionality remains the same. Follow these instructions:

1. Open Settings → Cellular communications.
2. Select Cellular data (or SIM card settings, if there are several of them).
3. Tap on Voice and data.
4. Disable the option Wi-Fi calling (the slider should turn gray).
5. In the window that appears, confirm the deactivation by clicking Turn off.

On some tariffs, operators (for example, MTS or Beeline) can force VoWiFi to be enabled. If the feature returns after disabling, try:

• 📵 Temporarily put your phone into airplane mode for 30 seconds, then turn off.
• 🔄 Reset network settings: Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings.
• 📱 Update iOS — sometimes VoWiFi bugs are fixed in new versions.

⚠️ Attention: On an iPhone with two SIM cards (eSIM + physical SIM), VoWiFi may be tied to a specific line. Disable this feature for each SIM separately.

VoWiFi and operators: why settings aren't saved

Sometimes users experience VoWiFi turning on by itself even after manually disabling it. This is usually due to mobile operator policy. Here's what might be happening:

If your operator isn't listed in the table, check your plan's terms in your personal account or contact support to see if VoWiFi is tied to any option. For example, Iote or Tinkoff Mobile The function may work differently due to virtual infrastructure.

⚠️ Attention: Some operators (eg. MTS or Beeline) may charge VoWiFi calls while roaming as international calls, even if you're connected to your home Wi-Fi. Check the rules before traveling abroad.

Resetting network settings as a last resort

If VoWiFi won't turn off through the default settings, your last resort is to reset your smartphone's network settings. This will delete all saved Wi-Fi networks, passwords, and mobile data settings, but it often resolves the issue with a stubborn feature. Instructions for different platforms:

On Android:

1. Open Settings → System (or General settings).
2. Select Reset → Reset network settings.
3. Confirm the action (you may be asked to enter your PIN).

On iPhone:

1. Go to Settings → Main → Transfer or reset iPhone.
2. Tap Reset → Reset network settings.
3. Enter your Apple ID password to confirm.

After the reset, the phone will reboot, and all network settings will be reset to factory defaults. You'll need to reconnect to Wi-Fi and configure your mobile data (APN), but VoWiFi should be disabled. If the problem persists, it's a clear sign that it's caused by your carrier, not your phone.

Alternative methods: disabling via the engineering menu

For advanced users, there is a way to disable VoWiFi via engineering menu (or service mode). This method works on most Android smartphones, but requires caution—incorrect steps can disrupt network operation. Instructions:

1. Open the app Telephone and enter the combination:

   ##4636##

   On some phones (eg. Samsung) a different combination may be required:

   *#0011#

2. In the menu that opens, select Phone information (or Phone Information).
3. Scroll down to the item Wi-Fi Calling or IMS Service Status.
4. Click on Disable or change the value from Enabled on Disabled.
5. Restart your phone.

If the engineering menu is not available (for example, on iPhone or some Xiaomi), this method won't work. Also, keep in mind that the settings may be reset after updating the firmware.

⚠️ Attention: Changes to the engineering menu may cause network instability. If you lose mobile data or stop receiving SMS messages after disabling VoWiFi, reset your settings or perform a reset.

Common problems and their solutions

When disabling VoWiFi, users encounter several common issues. Let's look at the most common ones and how to resolve them:

• 🔄 VoWiFi turns on automatically after reboot → Check if your phone's firmware was updated automatically. Some updates reset VoWiFi settings. Disable automatic software updates.
• 📵 There is no VoWiFi icon, but calls are made over Wi-Fi → The operator may be using ViLTE (4G calls). Disable this feature in your mobile network settings.
• 🔌 After disabling VoWiFi, mobile internet disappeared. → Reset your APN (access point name) settings or contact your carrier—VoWiFi may be tied to your internet plan.
• 📱 There is no "Wi-Fi Calling" option on the iPhone. → Make sure your carrier supports VoWiFi (the list is on the Apple website). If it does, but the option isn't there, update your iOS.

If none of the methods helped, there are two options left:

1. Contact your operator's support team and ask them to disable VoWiFi at the SIM card level.
2. Use third-party VoWiFi blocking apps (eg. NetGuard or AFWall+), but this requires root access on Android.

FAQ: Answers to frequently asked questions

Is it possible to disable VoWiFi for only a specific Wi-Fi network?

No, the feature is disabled globally for all networks. However, you can manually block your phone from connecting to specific Wi-Fi hotspots so that VoWiFi won't activate through them. To do this, go to Wi-Fi settings and tap the network name → "Forget" (or "Delete").

Will VoWiFi work while roaming if I haven't disabled it?

Yes, but rates vary depending on your carrier. Some providers count such calls as local (if you're connected to Wi-Fi), while others count them as international. Check the terms in your account or with customer support before your trip.

Why does my battery drain faster after disabling VoWiFi?

This is unlikely, as VoWiFi typically increases battery drain. The problem could be elsewhere: check if background processes (such as app updates) are running or if high-performance mode is enabled.

Is it possible to disable VoWiFi via USSD command?

Yes, some operators support such commands. For example, MegaFon This *105*005#, at MTS — *111*789#But it's best to check with support for the current command, as they may change.

Which is better: VoWiFi or VoLTE?

These are different technologies: VoWiFi works via Wi-Fi, and VoLTE — via 4G/5G. VoLTE is generally more stable and drains less battery, but requires good cellular coverage. If you have a weak mobile internet signal but have Wi-Fi, VoWiFi can be useful. Otherwise, it's better to choose VoLTE.