Modern smartphones Samsung have a wide range of features that allow you to stay connected even in areas with poor cellular coverage. Voice over Internet Protocol (VOIP) technology, known as VoWiFi Wi-Fi Calling, or Wi-Fi Calling, has become a standard for many users. It allows you to make and receive calls using a wireless network, which is especially useful in buildings with thick walls or remote locations.
If you're wondering how to enable WiFi calling on a Samsung device, you're probably looking for ways to improve your connection quality. Activating this feature on devices from the South Korean brand is usually intuitive, but it can have some hidden nuances depending on the operating system version. Android and shells One UIIn this article, we'll detail all the steps required for setup, as well as consider possible reasons why the feature may not work.
Enabling this feature doesn't require installing any third-party apps, as it's built into the system software. However, for it to work correctly, several conditions must be met, both on the device itself and on the data plan. Understanding these requirements will help avoid common setup errors and ensure stable voice communication in any environment.
Device and carrier requirements
Before you begin setting up the menu, you need to make sure that your equipment and SIM card support the required technology. Function Wi-Fi Calling It is not available on all models, although most modern flagships and mid-range devices Samsung (Starting with the Galaxy S7 series and newer) have the appropriate hardware. Support by your mobile operator is crucial.
Many users mistakenly believe that simply having access to wireless internet is enough. In fact, your carrier must support the IMS (IP Multimedia Subsystem) protocol for your plan. Without it, even if the option is enabled in the settings, your phone will not be able to route voice traffic over the network.
- 📱 Having a smartphone Samsung with VoWiFi technology support (check the model specifications on the official website).
- 📡 Your service provider supports the service and activates it on your SIM card.
- 🔒 Connect to a stable Wi-Fi network with sufficient bandwidth.
- 🔄 Update your device software to the latest available version.
It's also worth keeping in mind that in some regions or with certain providers, this service may be a paid service or require special network profile configuration. If you recently changed carriers, make sure the new SIM card is correctly registered with the network and has no restrictions on additional services.
⚠️ Note: The settings interface and menu item names may differ depending on the shell version One UI and your smartphone model. If you don't find the item described below, it may be hidden in an additional menu or require a software update.
Activating the function via the standard menu
The most common and secure way to enable voice calls over the Internet is to use the built-in system settings. AndroidOn devices Samsung The path to this option is usually standardized, but in the latest firmware versions it may be slightly changed for user convenience.
To get started, open the main app menu and find the "Settings" icon. Next, navigate to the connections section. Depending on the interface version, this section may be simply called "Connections" or combined with network settings.
Settings → Connections → Mobile Network → Wi-Fi CallingIn the window that opens, you'll see a switch. Toggle it to the "On" position. Once activated, a corresponding icon (usually a phone handset with a Wi-Fi symbol or the text "Wi-Fi") should appear in the status bar at the top of the screen. VoWiFi). This indicates that the phone is ready to use the wireless network for voice communications.
☑️ Activation checklist
In some cases, the system may request that you confirm your address for emergency services (E911). This is a standard safety procedure, as the operator may not automatically determine your location when calling over the internet. Enter your current address to complete the setup.
Using the engineering menu and codes
If the standard menu path doesn't produce the desired result or the option is hidden, you can try using the hidden engineering menu. This method is intended for advanced users and allows access to advanced network settings. Be careful when changing parameters, as incorrect settings may affect the operation of the communication module.
To enter the diagnostic menu on most smartphones Samsung A universal code is used. Open the Phone app and enter the combination of characters. After entering the last character, the menu should open automatically.
*#27663368378#In the window that opens, find the item related to Wi-Fi Calling or VoWiFiHere you can see more detailed settings, including choosing your preferred network type. For example, you can set the priority to "Wi-Fi only" or "Cellular preferred." Selecting "Wi-Fi preferred" will force the phone to try to use the wireless network for calls whenever one is available.
What to do if the code doesn't work?
Some carriers or firmware versions block access to the engineering menu using standard codes. In this case, you can try installing the Samsung Members app from the official Galaxy Store. The app has a "Diagnostics" section, which sometimes allows you to manage network functions or at least check the hardware status.
It is worth noting that on new versions Android Access to some hidden functions may be restricted by the security system. If the code doesn't work or the menu is empty, this means the manufacturer or operator has blocked this control method.
Setting up via the operator's application
Often, the reason for a non-functioning feature is not the phone's settings, but the lack of service on the provider's side. Many major carriers offer the option to activate VoWiFi Through their branded apps or personal accounts. This is the most reliable way to ensure the service is connected to your number.
Download your carrier's official app from the store. Google Play or Galaxy StoreLog in using your phone number. In the services or plan menu, find the section related to additional options or communication settings.
| Operator | Section in the application | Service name | Price |
|---|---|---|---|
| MTS | Services / Calls | Calls via Wi-Fi | For free |
| Megaphone | Services / Communication | Mobile Calls 2.0 | For free |
| Beeline | Services / Internet and communications | Calls via Wi-Fi | For free |
| Tele2 | Services / Options | Calls via Wi-Fi | For free |
After activating the service in the app, you may need to restart your smartphone. Only after restarting will the phone request updated profiles from the network and turn on the corresponding icon in the status bar. If the icon doesn't appear, check that the switch is enabled in the phone settings, as described in the previous sections.
⚠️ Please note: Service terms and rates are subject to change by the operator unilaterally. Always check the current terms in your personal account or the provider's official app, as roaming and calling rules may differ from the standard ones.
Troubleshooting connection issues and errors
Even if all the conditions are met, users may encounter a situation where Wi-Fi calls on Samsung devices don't work. The most common cause is an unstable internet connection. The voice transmission protocol is sensitive to latency (ping) and data packet loss.
Try restarting your router and smartphone. Sometimes, forgetting the Wi-Fi network on your phone and reconnecting with the password helps. Also, make sure that "Data Saver" mode isn't enabled on your device, as it can block background activity required for logging into the IMS network.
- 🔄 Restart your smartphone and router to clear network errors.
- 📡 Check your internet speed on speedtest.net (you need at least 1-2 Mbps).
- 🔒 Make sure your date and time settings are set to "Auto."
- 📱 Update your network profile in your mobile operator settings.
Another possible cause could be a conflict with VPN services or ad blockers. If you have a VPN enabled, try disabling it and check if the icon appears. VoWiFiSome corporate Wi-Fi networks may block ports needed for voice communication, so the feature may work at home but not in the office.
Impact of power saving mode
System One UI on smartphones Samsung Aggressively optimizes battery life. Aggressive power-saving settings can disable Wi-Fi or limit its background activity, resulting in disconnected voice calls.
Check your battery settings. Go to Settings → Device Maintenance → BatteryMake sure power saving mode is disabled or configured to not restrict system services. In some cases, it may be helpful to add the Phone app and system services to the exceptions list.
There's also a separate setting for sleep mode. If your phone goes into deep sleep, it may lose its constant connection to your carrier's server via Wi-Fi. Disable the "Sleep" feature for critical communication apps.
Frequently Asked Questions (FAQ)
Do you charge for minutes of talk time over Wi-Fi?
Rates vary depending on your carrier. In most cases, if you're in your home region, minutes are charged against your basic plan plan just like regular calls. However, when roaming internationally, Wi-Fi calls may be charged as incoming and outgoing calls from your home network, which can save you significant money. Always check with your provider for details.
Why doesn't the VoWiFi icon appear even though the setting is enabled?
This means the phone can't register with the operator's IMS network. This could be due to unsupported technology (likely due to your plan), a weak Wi-Fi signal, blocked ports by the router, or the need to renew your contract with the operator to activate the service on the server side.
Is it possible to make calls via Wi-Fi if the SIM card is removed?
No, for the technology to work VoWiFi An active SIM card registered with the operator's network is required. The phone uses the SIM card's data to log into the operator's secure network via the internet. Without a SIM card, the feature will not work.
Does Wi-Fi Calling degrade sound quality?
On the contrary, with a good internet connection, the sound quality is often better than on a standard cellular network, thanks to the HD Voice codec. However, if the channel is weak or unstable, the sound may become robotic or choppy. The technology automatically adapts to network conditions.