Wi-Fi Calling on Samsung: A Step-by-Step Guide to Setting Up VoWiFi

Wi-Fi Calling (VoWiFi) on Smartphones Samsung allow you to make and receive calls even without a mobile network—a stable internet connection is sufficient. This technology is especially useful in areas with poor 4G/5G coverage, such as basements, rural areas, or country houses. However, many users don't know how to activate VoWiFi on your devices Galaxy, faced with confusing settings or missing options in the menu.

In this article you will find detailed instructions on how to enable Wi-Fi calling on all current models Samsung (from Galaxy S21 to Galaxy A14), a list of supported Russian operators, and troubleshooting solutions—from missing options in settings to network registration errors. We'll also discuss how to check if VoWiFi is working on your phone and how this technology differs from calls via messengers like WhatsApp or Telegram.

What is VoWiFi and why is it needed on a Samsung device?

Technology Voice over Wi-Fi (VoWiFi) — is a communication standard that allows voice calls to be transmitted over an internet connection instead of traditional mobile networks (2G/3G/4G). Unlike calls via Viber or SkypeVoWiFi is integrated at the operating system level and uses your regular phone number, not your messenger account.

The main advantages of VoWiFi Samsung:

• 📶 Stable connection in places with poor mobile network coverage (for example, in the subway, elevators, or remote areas).
• 💰 Saving traffic: Calls do not use up your mobile data plan if you are connected to Wi-Fi.
• ⚡ Quick Switching between Wi-Fi and LTE without connection loss (if the operator supports it) ePDG).
• 🔒 Security: data is encrypted using the protocol IPSec, as in banking applications.

It is important to understand that VoWiFi is It's not the same as Wi-Fi Calling in messengers.The latter require installing a separate app and registering, while VoWiFi works natively through the standard Phone app. Furthermore, calls via messaging apps often have poorer sound quality and don't support emergency numbers (e.g., 112).

Which Samsung models support VoWiFi?

VoWiFi technology is available on most smartphones. Samsung, released after 2019, but there are some nuances. Full support depends on three factors:

1. Phone model (chipset and firmware).
2. Telecom operator (not all providers have activated VoWiFi in Russia).
3. Android version (starting from Android 9 Pie with a security update no later than 2021).

Here is a list of models Samsung, which officially support VoWiFi in Russia (as of 2026):

If your model isn't listed, it doesn't mean VoWiFi isn't supported. For example, some carriers (e.g., MTS) activate the feature on devices that aren't officially certified for VoWiFi. To check for support, follow the steps in the next section.

Step-by-step instructions: how to enable VoWiFi on Samsung

Activating Wi-Fi calling on Samsung It takes no more than 5 minutes if your carrier supports the technology. Follow these instructions:

1. Open Settings and go to the section Connections (or Network and Internet on older versions One UI).
2. Select an item Mobile networks.
3. Tap on Wi-Fi calling (or Wi-Fi calling — the name depends on the firmware version).
4. Activate the switch Wi-Fi calling.
5. In the window that appears, select the mode:
   • Wi-Fi is preferred — the phone will use the Internet for calls even if there is a mobile network.
   • Mobile network is preferred — VoWiFi will only turn on if there is no coverage.

If the point Wi-Fi calling If it is not in the menu, follow these steps:

Update your firmware to the latest version|Check carrier support (list below)|Reset network settings in Settings → General Management → Reset → Reset Network Settings|Install the SIM card into the slot SIM 1-->

On some models (eg, Galaxy A52) The path to the settings may differ. Alternative option:

Settings → Advanced Features → Wi-Fi Calling

List of operators supporting VoWiFi in Russia

Not all Russian telecom operators offer VoWiFi. As of 2026, the technology is officially supported by:

• 📡 MTS — works on most tariffs (except “Smart” and “For laptop”).
• 📡 Beeline — available for subscribers with the “Everything” and “Unlimited” tariffs.
• 📡 Megaphone — supported by the “Turn on Maximum” and “Tariff Plan” tariffs.
• 📡 Tele2 — VoWiFi is only available in regions with coverage VoLTE.
• ❌ Yota, Tinkoff Mobile, SberMobile — do not support VoWiFi.

To check if the service is available on your tariff, send a USSD request:

• MTS: *111*0887#
• Beeline: *110*180#
• Megaphone: *105*499#
• Tele2: *155*1#

If your carrier is not listed but you want to use VoWiFi, consider alternatives:

• 🔄 Change of operator on the supporter (for example, with Iotas on MTS).
• 📱 Using instant messengers (WhatsApp, Viber) for internet calls.
• 🌐 Setting up SIP telephony through apps like Zoiper (requires technical knowledge).

⚠️ Note: Some carriers may charge VoWiFi as an outgoing call, even if you're using Wi-Fi. Check the terms in your account or contact support.

Common VoWiFi Problems on Samsung and Their Solutions

Even after proper setup, Wi-Fi calling may not work. the most common mistakes and ways to eliminate them:

If after enabling VoWiFi, calls start to drop or the sound disappears, try:

1. Disable Wi-Fi Assist (in Wi-Fi settings).
2. Manually specify DNS servers 8.8.8.8 And 8.8.4.4 in the Wi-Fi settings.
3. Reset APN settings (path: Settings → Mobile networks → Access point names (APN) → Factory reset).

⚠️ Attention: On some firmware versions Samsung (especially on Galaxy A-series) VoWiFi settings are reset after an Android update. Make sure to enable this feature after each major update.

VoWiFi vs. VoLTE: What's the Difference and Which is Better?

Users often get confused VoWiFi (Wi-Fi calling) and VoLTE (4G calls). While both technologies improve connection quality, they work differently:

• 📶 VoLTE uses a mobile network 4G/LTE For voice transmission, providing clearer sound and a faster connection. Works only with 4G coverage.
• 📞 VoWiFi transmits voice through Wi-Fi, which allows you to make calls even without a mobile network. Quality depends on internet speed.

On smartphones Samsung these technologies can work simultaneously: The phone automatically selects the best option depending on the conditions. For example:

• In a city with good 4G it will be used VoLTE.
• In a basement or a country house with poor coverage, it is activated VoWiFi.

To turn on VoLTE on Samsung:

1. Go to Settings → Connections → Mobile networks.
2. Select Network mode.
3. Activate the option VoLTE calls (or 4G calls).

If you can't enable VoLTE on your phone, the problem is most likely due to:

• Outdated firmware (requires One UI 2.5+).
• Unsupported SIM card (required) USIM or eSIM).
• Operator restrictions (eg Tele2 does not support VoLTE in some regions).

How to improve VoWiFi call quality on Samsung

If Wi-Fi calling works but the quality is poor (interference, delays, drops), try these tips:

1. Check your Wi-Fi speed:
   • The minimum speed for stable calls is 2 Mbps.
   • Use apps like Speedtest for testing.
2. Set up your router:
   • Turn on QoS (Quality of Service) in the router settings and set the priority for voice traffic.
   • Switch to range 5 GHz (less busy than 2.4 GHz).
3. Update your router firmware:
   • Outdated software can cause problems with IPSec (VoWiFi encryption protocol).

Settings → Mobile networks → Access point names (APNs) → Add new APN
Name: VoWiFi
APN: ims
Protocol: IPv4/IPv6
MMS protocol: WAP 2.0
Status: Activated