Modern mobile communications technologies are constantly evolving, offering subscribers new opportunities for convenient communication. One of the most useful features now available to MegaFon users is VoWiFi technology, which allows voice calls over a wireless internet connection. This option is especially useful for residents of apartment buildings with thick walls, summer cottages, or office buildings where cell tower signal strength is poor but stable Wi-Fi is available.
Activating this service allows your phone to automatically switch between the mobile network and your wireless router without interrupting the connection, ensuring high-quality sound and freedom from interference. To take advantage of this benefit, you must ensure your device supports this technology. VoWiFi, and your tariff plan allows you to use the service. In this article, we'll cover all setup steps, potential issues, and the nuances of how the feature works on different operating systems.
It's worth noting that the activation process may vary slightly depending on your smartphone model and operating system version. Your carrier regularly updates its software to ensure compatibility with new devices, so the menu interface may look different. Below are updated materials to help you quickly set up high-quality internet calls.
What is VoWiFi technology and how does it work?
Technology Voice over Wi-Fi (VoWiFi) is a standard for transmitting voice traffic over IP protocols in wireless networks. Unlike popular messaging apps, which require a separate app and a contact to be connected, Wi-Fi calls on MegaFon are made directly through the standard phone book and dialing interface. To your contact, such a call appears like a regular incoming call from your mobile number, and they don't need to know that you're in an area with poor cellular coverage.
The operating principle is based on the voice signal being digitized and transmitted through the router's internet connection to the operator's servers, and then routed to the public telephone network. This ensures high-quality communication even in basements, subways, or remote areas where Wi-Fi coverage is available but a base station signal is absent. A key advantage is battery savings, as the smartphone doesn't have to strengthen its signal while searching for a tower when connected to a stable wireless network.
⚠️ Please note: Call quality directly depends on the speed and stability of your internet connection. If your Wi-Fi network is overloaded with other devices or has low bandwidth, delays or interruptions may occur.
It's important to understand that for this feature to work, the phone must support not just internet calls, but native integration with the operator. This means the device must be able to transmit special signaling packets for authorization in the MegaFon network. Without support for this feature at the level gland and smartphone software, activating the service through the operator settings will not lead to the desired result.
Checking device and tariff compatibility
Before setting up, make sure your equipment and plan meet your carrier's requirements. Not all smartphone models released in previous years are equipped with a module for VoWiFi. Furthermore, the service must be available in your coverage area, as network infrastructure development is uneven across the country.
Checking compatibility usually begins with examining your device's technical specifications. MegaFon is constantly expanding its list of supported devices, including models from leading global brands. If your phone was officially purchased in Russia in the last few years, the likelihood of supporting this technology is very high. However, for imported devices imported through parallel imports, functionality may be limited by software locks.
- 📱 Apple smartphones: VoWiFi support is available on iPhone models starting with version 5c and above, provided the latest version of iOS is installed.
- 🤖 Android devices: Most modern models from Samsung, Xiaomi, Honor and other brands have built-in support, but it may be hidden in the menu.
- 📶 Network requirements: The router must support WPA2 or WPA3 security standards, as open networks may block voice traffic by the operator.
Regarding your plan, in most cases, the Wi-Fi Calling service is enabled by default or available free of charge for all current and archived MegaFon plans. However, if you use corporate communications or specific plans for IoT devices, restrictions may apply. We recommend checking your personal account or contacting support if you are unsure of your SIM card's status.
Activation of the service on the operator's side
In most cases, the service is activated automatically for current subscribers upon registration. However, if you previously used services from other operators or your plan is on an older line, you may need to activate it manually. This can be done in several ways, without having to contact a service office.
The fastest way is to use a USSD command or your personal account. You can manage all additional options through your personal account on the MegaFon website or mobile app. In the communication services section, there's often a "Calls" or "Communications" category where you can find the toggle to activate the feature. If you can't find the option through the interface, you can use the universal code.
To activate via the phone menu, dial the command *105*0058# and press the call button. You will receive a response SMS confirming the connection or informing you that the service is already active. You can also send a free SMS with the text 1 to the number 3118After receiving confirmation from your operator, you must reboot your smartphone so that it re-registers with the network and receives the updated service profile.
⚠️ Please note: After activating the service with your carrier, the settings may not be applied immediately. If the feature does not appear in your phone's menu after 10-15 minutes, perform a full reboot of your device.
Activation is also possible via a chatbot in messengers or on the website. Automated systems will help you quickly check the service status and activate it in one click. This is especially convenient if you don't want to remember USSD codes or search through a complex personal account menu.
Is it possible to make calls via Wi-Fi while roaming?
Yes, VoWiFi technology allows you to make and receive calls both within your home region and abroad. When roaming, calls to Russian numbers will be charged as calls from your home network (if the corresponding tariff option is enabled), while calls to local numbers in your host country will be charged at roaming rates. However, make sure data roaming is disabled in your phone settings if you don't want to use up mobile data, even though the call itself will be made over Wi-Fi.
Setting up the feature on Android smartphones
The Android operating system interface may vary depending on the manufacturer and operating system version. MegaFon partners with most vendors, so the settings often appear automatically after receiving a profile from the operator. If a menu item is inactive or missing, you can try searching for it manually.
The standard path to settings usually looks like this: open "Settings," go to "Connections" or "Network & Internet." Find "Mobile Network" or "SIM Cards." This is where the "Wi-Fi Calling" option should be located. On some Samsung or Xiaomi models, this toggle may be located in the top "Quick Settings" menu, which is accessed by swiping down from the top of the screen.
If you can't find the option you need, try searching through the settings. Enter "Wi-Fi" or "VoWiFi" in the search bar, and the system will highlight the appropriate section. Sometimes the feature is hidden within the "More" or "Advanced Call Settings" menu. Once the toggle is enabled, a corresponding icon will appear in the status bar next to the signal strength.
☑️ Android Setup Checklist
Devices where this feature doesn't appear automatically may require a software update. Manufacturers regularly release patches that add carrier support. Go to "Settings" → "About phone" → "System update" and check for new software versions. Also, make sure your date and time settings are set to automatic, as desynchronization can prevent you from logging into your carrier's network.
Instructions for iPhone (iOS) owners
Apple smartphone owners are fortunate to have a unified settings interface, which is the same for all models starting with the iPhone 5c. However, VoWiFi on iOS requires the latest available version of the operating system. MegaFon regularly updates carrier settings, which are automatically updated when an internet connection is available.
To enable the feature, go to the menu Settings and select the item Cellular communicationsIf you have two SIM cards, select the one associated with MegaFon. In the menu that opens, find the "Wi-Fi Calling" section. Toggle the switch to the on position. The system may ask you to confirm your address for emergency services, as when calling over the internet, geolocation is determined by the router's IP address, not the cell tower.
Once turned on, "Wi-Fi" will appear at the top of the screen (in the notch or status bar) next to the carrier's name. This means the phone is ready to make calls over a wireless network. If you're within range of a mobile signal, the phone will use it, but if the signal degrades, it will automatically switch to Wi-Fi without interrupting the call.
| Parameter | Requirement for iOS | Note |
|---|---|---|
| Minimum model | iPhone 5c and newer | Older models do not support |
| OS version | iOS 13 and above (latest recommended) | For stable operation and safety |
| Operator settings | Version 40.1 and above | Updates automatically |
| Emergency services address | Registration required | Required to call 112/102/103 |
Indication and control during a call
Understanding the indicators on your smartphone's screen will help you always know which network your call is using. When the feature is active and the phone is connected to Wi-Fi, but the mobile network is also available, the standard Wi-Fi icon may appear in the status bar. However, when a call is active or pending, a special symbol often appears next to the operator name or signal icon—a telephone handset with a Wi-Fi waveform or letters VoWiFi.
You can switch between networks during a call. If you leave Wi-Fi coverage, your phone will automatically switch to a 4G/LTE mobile network if VoLTE is enabled. This process takes a split second and is typically unnoticeable to the other person. The reverse process also works automatically: when you enter a room with Wi-Fi coverage, your phone will choose the wireless network to save battery life and improve call quality.
Call minutes are debited according to your main MegaFon tariff plan, as if you were calling through a regular cell tower. Internet traffic is also not consumed, as the voice stream is sent over a dedicated priority channel.
⚠️ Please note: When calling emergency services (112, 101, 102, 103) via Wi-Fi, the operator may not receive your exact coordinates. Always clearly state your address to the dispatcher.
Troubleshooting connection issues and errors
Despite the simplicity of setup, users may encounter situations where this feature doesn't work. One of the most common causes is the use of "gray" smartphones, whose software lacks Russian carrier profiles. In this case, even with technical support, the menu item may be hidden. A solution may be to flash the device to the regional software version, but this is a complex procedure that requires expertise.
Another common issue is blocked ports at the router level. Some home internet providers or corporate networks may block SIP protocols used for voice transmission. If you see the VoWiFi icon but calls aren't going through, try rebooting your router or checking your firewall settings. Also, make sure you don't have any call filtering apps installed on your phone, as they could interfere with the system's calling feature.
If the icon disappeared after updating iOS or Android, check your date and time settings. An incorrect time zone or time desynchronization can cause security certificates to fail, preventing your phone from logging into your carrier's IMS network. Resetting your network settings (not a full reset of your phone, but just the network settings) often helps restore all settings to the carrier's factory defaults.
What should I do if the icon is there, but calls are made via the mobile network?
This is normal behavior. The phone always prioritizes mobile network (LTE/5G) for calls if the signal is stable, as this ensures better quality and the ability to simultaneously transmit data. Wi-Fi calls will only work if the cellular signal is weak or if you force Airplane Mode to use Wi-Fi only.
Frequently Asked Questions (FAQ)
Do you charge for calls over Wi-Fi?
No, the operator doesn't charge a separate fee for the VoWiFi technology itself. Calls are charged according to your main plan, just like regular calls. Your internet data is also not consumed.
Can I use Wi-Fi calling if my SIM card is blocked?
No, to log in to the operator's network and establish a connection, the SIM card must be active and have a positive balance (or the "Replacement Number" / "Trust Credit" service must be activated, if your tariff allows it).
Does the function work if there is no mobile network at all (airplane mode)?
Yes, this is one of the main advantages of this technology. You can turn on Airplane Mode, then activate Wi-Fi and make calls without any problems even in areas with poor cellular coverage.
Why does the VoWiFi icon appear and disappear?
This could be due to an unstable Wi-Fi signal or intermittent loss of connection with the operator's servers. The phone may also switch between networks in search of the best connection.
Do I need to reconfigure the feature after changing my phone?
Yes, the settings are tied to your device. On a new phone, you'll need to reactivate the service in your account (if it's been disabled) and turn on the switch in your smartphone's settings.