Wi-Fi Calling on Samsung: How to Enable VoWiFi in 5 Minutes

Wi-Fi Calling (VoWiFi) on Smartphones Samsung — is a technology that allows you to make voice calls even without a mobile network. This feature is especially useful in areas with poor 4G/5G coverage, such as basements, remote areas, or country houses. Moreover, the call quality often surpasses that of traditional cellular calls thanks to a stable internet connection.

Despite the obvious advantages, many users Samsung Galaxy Some people don't know how to activate this option. In some cases, it's hidden deep within the settings, and in other cases, it requires additional configuration from the mobile operator. In this article, we'll cover all possible scenarios—from basic activation to troubleshooting common issues.

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

Technology Voice over Wi-Fi (VoWiFi) allows voice traffic to be transmitted over the internet instead of a cellular network. This is not the same as instant messaging apps like WhatsApp or Telegram — standard phone numbers are used here, and calls are routed through the telecom operator, just like a regular call.

The main advantages of VoWiFi Samsung:

• 📶 Stable connection in areas with a weak mobile network signal (for example, in the metro or in rural areas).
• 💰 Saving roaming - many operators do not charge extra for calls via Wi-Fi abroad.
• 🔋 Less battery consumption compared to traditional calls (especially noticeable on older models).
• 🎧 Best sound quality thanks to the HD Voice codec (if supported by the operator).

It is important to understand that VoWiFi works only when connected to Wi-Fi If the internet goes down, the call will be disconnected (unlike messaging apps, which can switch to mobile data). Also, not all operators support this technology—it's best to check the official website for a list of current plans.

Which Samsung models support VoWiFi?

Wi-Fi calling is available on most modern smartphones. Samsung Galaxy, starting from Android 9 Pie and newer. However, there are some nuances:

• 📱 Flagship series (Galaxy S20/S21/S22/S23, Note 20, Z Fold/Flip) — VoWiFi support out of the box.
• 📱 Middle segment (Galaxy A52/A53/A72, M32/M52) - requires updating the firmware to the latest version.
• 📱 Budget models (Galaxy A12/A22, J-series) - support depends on the region and operator.

To find out for sure whether yours supports Samsung VoWiFi, check:

1. Open Settings → Connections → Mobile networks.
2. See if there is an item Wi-Fi calling or Wi-Fi Calling.
3. If there is no option, update the firmware via Settings → Software Update.

On some models for operators MTS, Beeline And Tele2 A special SIM card with VoLTE/VoWiFi support (e.g. USIM) is required. Check with your operator if the feature is not activated.

How to check Android version on Samsung?

Open Settings → About phone → Android versionIf the version is below 9.0, VoWiFi is most likely not supported.

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

Activating Wi-Fi calling takes no more than 5 minutes. Follow these instructions:

1. Step 1: Connect to Wi-Fi
   

   Make sure yours is Samsung Connected to a stable Wi-Fi network. It's best to use a home router rather than public hotspots.

2. Step 2: Open your mobile network settings
   

   Go to Settings → Connections → Mobile networks.

3. Step 3: Find the "Wi-Fi Calling" section
   

   On new models (Android 12+) the option can be called Wi-Fi Calling or Wi-Fi calling.

4. Step 4: Activate the feature
   

   Move the slider to the "On" position and confirm activation (a reboot may be required).

5. Step 5: Select the operating mode
   

   There are usually three options available:

   • 📞 Wi-Fi only — calls are made exclusively via the Internet.
   • 📶 Mobile network is preferred — Wi-Fi is used only when there is no signal.
   • 🔄 Automatic selection — the system itself decides which channel to use.

Once activated, an icon will appear in the status bar (upper right corner of the screen) Wi-Fi Calling or VoWiFiIf it's not there, check the settings again or restart your phone.

Update your firmware to the latest version|

Connect to a reliable Wi-Fi network|

Make sure your SIM card supports VoLTE|

Check your balance (some operators block the function if your balance is negative)|-->

Setting up VoWiFi for different operators (MTS, Beeline, Megafon, Tele2)

Although the process of activating VoWiFi on Samsung While universal, some operators require additional steps. Below are the specifics for popular providers:

If after activating VoWiFi on Samsung Calls are not going through, check:

• 🔄 Restart your phone and router.
• 📡 Make sure your router isn't blocking the UDP port 500 (used for IPSec).
• 📱 Update your operator profile: Settings → Update eSIM profile (if available).

⚠️ Attention: On some plans, operators may charge for Wi-Fi calls as they would for international calls (for example, when roaming). Check the terms in your personal account.

Common problems and their solutions

Even after VoWiFi is configured correctly, Samsung Glitches may occur. Here are the most common ones and how to fix them:

1. There is a VoWiFi icon, but calls don't go through.

Reasons:

• 🚫 The operator is blocking the function (check your balance and tariff).
• 🔌 Router issues (disable VPN or firewall).
• 📵 SIM card does not support VoLTE (replace with USIM).

Solution: Try calling the operator's short number (for example, 0890 For MTS). If the call went through, the problem is with the tariff.

2. VoWiFi turns on, but quickly turns off

Guilty:

• 📶 Unstable Wi-Fi (check the speed via Speedtest).
• 🔋 Power saving mode (turn it off in Settings → Device Maintenance).
• 📱 Outdated firmware (update software).

3. There is no "Wi-Fi Calling" option in the settings

Possible reasons:

• 📱 Model Samsung does not support VoWiFi (check the list above).
• 📳 The operator does not provide the service (check by number) 0611 For Megaphone).
• 🔄 The function is hidden (enter in the dialer ##4636## and check IMS settings).

⚠️ Attention: If you use Samsung with custom firmware (for example, LineageOS), VoWiFi may not work due to missing operator certificates. Please switch back to the official software.

How to improve Wi-Fi call quality

To ensure clear, drop-out, and noise-free VoWiFi calls, follow these tips:

1. Use a router that supports 5 GHz
   

   Range 5 GHz less congested and provides a more stable connection than 2.4 GHz.

2. Disable VPN and proxy
   

   These services may block voice traffic. Check your settings in Settings → Connections → Other networks.

3. Activate QoS on your router
   

   In the router settings (192.168.0.1 or 192.168.1.1) turn on Quality of Service (QoS) and set priority for voice traffic.

4. Update your router's firmware
   

   Outdated software may cause conflicts with VoWiFi. Download the latest version from the manufacturer's website.

If you frequently make calls over Wi-Fi, consider purchasing Mesh systems (For example, Samsung SmartThings Wifi or TP-Link Deco). It provides a stable signal in all rooms, which is critical for VoWiFi.

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

Many people are confused VoWiFi (Wi-Fi calling) and VoLTE (4G calls). While both technologies improve connection quality, they have key differences:

On Samsung Both technologies can be used simultaneously. For example, at home, the phone will automatically switch to VoWiFi, and on the street - on VoLTETo check if VoLTE is enabled:

1. Open Settings → Connections → Mobile networks.
2. Find the item VoLTE calls and activate it.
3. An icon will appear in the status bar. HD or VoLTE.

If you need to choose one, be guided by the terms of use:

• 🏠 VoWiFi — for home/office with good Wi-Fi.
• 🚗 VoLTE — for travel and places with reliable 4G.

FAQ: Answers to frequently asked questions

Is it possible to use VoWiFi without a SIM card?

No, Wi-Fi calling requires an active SIM card that supports VoLTE/VoWiFi. Without one, the feature will not work, even if the phone is connected to the internet.

Why isn't VoWiFi working with my router?

Some routers block protocols required for VoWiFi (eg. IPSec or UDP 500). Try:

• Disable the firewall on the router.
• Change security mode from WPA3 on WPA2.
• Update the router firmware.

Will VoWiFi work abroad?

Yes, but the conditions depend on the operator. For example, MTS And Beeline allow you to make calls over Wi-Fi while roaming without any additional charges (like home calls), and Megaphone They may be charged as international calls. Check with your provider for details.

Can I use VoWiFi on a Samsung with two SIM cards?

Yes, but usually the function only works with primary SIM card (slot 1). To activate VoWiFi for the second SIM:

1. Go to Settings → SIM card management.
2. Select the second SIM as the primary one for calls.
3. Re-enable VoWiFi.

Please note: not all operators support VoWiFi on the second SIM.

How to disable VoWiFi on Samsung?

To disable Wi-Fi calling:

1. Open Settings → Connections → Mobile networks.
2. Find the item Wi-Fi calling.
3. Move the slider to the "Off" position.

Once disabled, the phone will only use the mobile network for calls.