How to enable Wi-Fi calling on the Samsung S10

Modern smartphones have long ceased to be simply a means of communication, having become universal tools for work and entertainment. However, even flagship models, such as Samsung Galaxy S10, may face the problem of poor cellular signal in buildings with thick walls or in remote areas. It's in these situations that technology comes to the rescue. Voice over Wi-Fi, which allows you to make voice calls over an internet connection, bypassing weak coverage areas of mobile operators.

Enabling this feature on your device can dramatically improve call quality, ensuring clear sound and a stable connection where regular calls falter. In this article, we'll cover the setup process, potential pitfalls, and solutions to common issues so you can seamlessly communicate with family and colleagues anywhere you have access to a wireless network.

It's worth noting that the success of the operation depends not only on the settings of the smartphone itself, but also on the service's support by your mobile operator. Without first connecting to the VoWiFi service on the operator's side, activating the function in the phone menu will not produce any results. Therefore, before starting any technical manipulations, make sure that your tariff plan and SIM card meet the necessary requirements.

What is VoWiFi and why does an S10 owner need it?

Technology VoWiFi (Voice over Wi-Fi) is a standard for transmitting voice traffic over IP protocols, similar to how popular instant messengers work, but with integration into the standard phone book and dialer. For the owner Samsung Galaxy S10 This means that the phone will automatically switch to the wireless network for calls if the cell tower signal becomes unstable or disappears altogether.

The main advantage is that incoming and outgoing calls are routed through your regular phone number, and the other party won't even notice the difference. You don't need to ask your counterparty to install additional apps or sign up for new services. The sound quality often surpasses standard GSM calls, especially if using broadband internet.

⚠️ Attention: Using VoWiFi consumes your home or office internet data. Although voice data is small, it's worth considering for long calls or poorly compressed codecs if you have a limited data plan from your provider.

Additionally, this feature is critical for those who frequently visit areas with poor signal strength, such as underground parking garages, metal-frame offices, or rural areas. Samsung S10, with its powerful processor and high-quality modems, copes well with processing voice packets, ensuring minimal delays during conversations.

Checking operator and tariff compatibility

Before delving into the depths of your smartphone's menu, you need to make sure that your mobile operator supports the technology. VoWiFi In your region. Major telecom providers are gradually rolling out this option, but it may not be available on all plans or may require replacing your old SIM card with a new one that supports USIM.

Activating the service often requires sending a special USSD request or confirming consent in the subscriber's personal account. Without this step, the phone may see the Wi-Fi network, but the option in the settings will either be missing or grayed out. Checking compatibility is a fundamental step that will save you time searching for non-existent switches.

It's also worth keeping in mind that some carriers require the Wi-Fi hotspot used for calls to be located in a specific geographic region (for example, in the same country where the SIM card is registered). This is a security measure to prevent international roaming fraud.

• 📱 Make sure your SIM card supports the 4G/LTE standard.
• 🌍 Check if you are in international roaming, where the service may be blocked.
• 💳 Update your network profile by visiting a mobile phone store or using your operator's app.

⚠️ Attention: Operator app interfaces and USSD codes are subject to change. For up-to-date service activation information, always check your provider's official website or the help section of your mobile app.

Basic activation of the feature in the Samsung S10 settings

Once your carrier confirms support for the service, you can begin setting up the device itself. One UI, installed on Samsung Galaxy S10The settings menu is structured logically, but the path to the desired switch may not be obvious to an untrained user.

To start, open the main application menu and find the icon SettingsYou're interested in the section related to connections. Depending on the firmware version, it may be simply called "Connections" or have a more comprehensive name. This is where all the operating parameters for the smartphone's wireless modules are located.

Inside the connections section, look for the item Wi-Fi callingIf you don't see it immediately on the main settings screen, use the settings search (the magnifying glass at the top of the screen) and search for "Wi-Fi Calling" or "Calls." The system will automatically redirect you to the appropriate menu.

After you enable the slider, the system may request confirmation of your emergency contact information (E911). This is a standard procedure required to ensure the operator can determine your location when calling emergency services, as Wi-Fi geolocation is determined differently than cell towers.

Advanced settings and network priority selection

On the menu VoWiFi on Samsung S10 Additional options that allow you to fine-tune your smartphone's behavior are often hidden. One of the most important settings is choosing your preferred network. The system offers three behavior options: "Prefer mobile network," "Prefer Wi-Fi network," or "Wi-Fi only."

The optimal choice for most users is the "Prefer Wi-Fi" mode (or "Wi-Fi Only" if you're in an area with no cellular coverage). In this mode, the phone will attempt to use the wireless connection for voice calls even if the cellular signal is present but weak.

If you select "Prefer Mobile Network," your phone will use Wi-Fi for calls only when there's no cellular signal. This can be useful for saving battery life in some scenarios, but is less effective for indoor call quality.

You may also find an emergency address setting here. Make sure the address you enter matches your actual location, especially if you frequently change locations. This is critical for safety.

Solution: The function does not activate or disappears

Quite often, users are faced with a situation where, after all the manipulations, the item Wi-Fi calling The app remains grayed out, disappears after a reboot, or displays the message "Not supported by your carrier." This is a common issue that is often rooted in hidden system settings or the network cache.

The first thing to try is resetting your network settings. This won't delete your personal data, photos, or contacts, but it will reset all network settings (Wi-Fi passwords, Bluetooth settings, mobile networks) to factory defaults. This often "shakes" the system and forces the phone to re-request the service profile from the carrier.

To perform a reset, go to Settings → General Settings → Reset → Reset Network SettingsAfter completing this operation, the phone will reboot and you will need to re-enter the Wi-Fi network passwords.

If a simple reset doesn't help, the problem may be due to a lack of system updates. Samsung periodically releases patches that add support for new operators or fix IMS protocol bugs. Check for updates in the section Software update.

⚠️ Attention: If you are using a custom firmware or an unlocked bootloader, the VoWiFi feature may not work due to a security breach (Knox), as operators require a certified environment to transmit voice traffic.

The Impact of Power Saving Mode on Call Quality

Owners Samsung Galaxy S10 should be aware that aggressive power saving algorithms may negatively impact performance VoWiFiIn Power Saver mode, your smartphone may limit background network activity, which can result in connection drops or the inability to answer incoming Wi-Fi calls.

If you notice that Wi-Fi calls are unstable or your phone takes a long time to "think" before ringing, check your power saving mode. We recommend disabling power saving mode or adding your phone service to the exceptions list, if your software version allows it.

Additionally, some routers have QoS (Quality of Service) settings that prioritize certain traffic. Make sure your router doesn't block or restrict ports used for IMS voice traffic. While this is rare in home environments, it's common in corporate networks.

• 🔋 Turn off Energy Saver mode during important calls.
• 📡 Place the router closer to the place where you usually talk on the phone.
• 🔄 Restart your router if you experience lag or audio interruptions.

Understanding the interactions between your phone's software, your carrier's settings, and your network hardware can help you achieve the best possible connection. Samsung S10 — is a powerful tool, and setting it up correctly will unlock its full potential.

Frequently Asked Questions (FAQ)