Modern mobile communications are increasingly facing the problem of cell tower congestion, especially in densely populated residential complexes and office centers in large cities. 4G or 3G signals can be unstable, leading to interrupted calls and the inability to make important calls. In such situations, VoWiFi technology comes to the rescue, allowing you to use your home or office network to transmit voice traffic. For Megafon subscribers, this feature is a real lifesaver, providing crystal-clear sound and a stable connection where the regular network is silent.
Activating this service does not require complex technical knowledge, but the process may differ depending on your smartphone model and operating system version. VoWiFi technology (Voice over Wi-Fi) is completely transparent to the user: you simply dial the number as usual, and the phone automatically selects the optimal connection path. In this article, we'll cover in detail how to check device support, how to activate the service in your account, and what to do if setup is successful but calls still aren't connecting.
Before you begin setting up your plan, make sure it supports voice calls over the internet. Megafon is constantly updating its plan lines, so conditions may vary. For calls to work via Wi-Fi, the Call Intercept service must be enabled. Without this option, the phone will not be able to forward calls to the IP channel if there is no cellular signal. Checking these basic conditions is the first and most important step to a stable connection.
Technical requirements and compatibility testing
The first step in the setup process is checking the hardware and software compatibility of your device. Not all smartphones, even those released several years ago, support the VoWiFi standard, as this requires the appropriate hardware modules and approval from the telecom operator. Megafon maintains a list of certified models, but in reality, most modern Android and iOS devices work correctly.
Please note that this technology requires a certain software level. If your phone hasn't received a system update in a while, the feature may be hidden or may not function correctly. It's also important that the SIM card be up-to-date and support 4G standards, as these networks are used to route voice traffic.
How to check if your phone supports VoWiFi?
The list of supported devices typically includes iPhone models starting with the 5S (running iOS 12 and above), Samsung Galaxy S6 and newer, and most recent Huawei, Xiaomi, and Honor flagships. However, being on the list doesn't guarantee compatibility with your region.
Here are the basic criteria your equipment must meet:
- 📱 The smartphone must support the LTE (4G) standard and have the appropriate firmware.
- 🔄 The operating system must be updated to the latest version (Android 8.0+ or iOS 12+).
- 📶 The SIM card must be replaced with a new one (USIM) if it is older than 5-7 years.
- 🌍 In your phone settings, 4G/LTE mode must be enabled as the preferred network type.
If you're planning to purchase a new device specifically for internet calling, we recommend choosing models released no earlier than 2018. Older devices may have software limitations that cannot be circumvented without flashing the firmware, which is not recommended for the average user.
Activation of the service in your personal account and via USSD
After checking your phone, you need to make sure the service itself is activated with your carrier. Megafon offers several ways to manage subscriptions, and choosing the most convenient one depends on your preferences. Wi-Fi Calling is often enabled by default on modern plans, but it's best to double-check its status manually.
The fastest way to activate is using a USSD command. This is a universal method that works on any phone, even without internet access (though the Wi-Fi function itself requires it, of course). Enter the command on your phone's keypad. *117*0059# and press the call button. The system will immediately process your request and send you an SMS notification of successful activation.
If you prefer a graphical interface, use the Megafon mobile app or your personal account on the website. Service management is more intuitive there:
- 📲 Go to the "Services" or "My Options" section.
- 🔍 In the search, type “Wi-Fi Calling” or “VoWiFi”.
- ✅ Click the "Connect" button or move the toggle switch to the active position.
☑️ Pre-activation check
It's worth noting that activating the service is free, and calls are billed according to your primary plan. Minutes are deducted from your primary plan, just like a regular cell phone call. If you have unlimited minutes, your calls will also be unlimited over Wi-Fi.
Setting up an Android smartphone
The process for enabling this feature on Android devices may vary slightly depending on the manufacturer and operating system version. Samsung, for example, has placed this setting in a separate menu, while on stock Android it may be hidden in the network settings. Let's look at the general procedure.
First, make sure your phone is connected to Wi-Fi. Without an active internet connection, the menu may be unavailable or the feature may not work. Then, go to the device's main settings.
The path to the setting usually looks like this:
- Open
Settings. - Go to the section
ConnectionsorNetwork and Internet. - Find the item
Wi-Fi callingorWi-Fi Calling. - Activate the switch.
In some cases, for example on Xiaomi or Huawei smartphones, the path may differ: Settings → Mobile Network → Wi-Fi CallingIf you can't find this option, try searching for "Wi-Fi" in your settings.
| Smartphone brand | Path to setup | Peculiarities |
|---|---|---|
| Samsung | Settings → Connections → Wi-Fi Calling | Samsung account sign-in required |
| Xiaomi / Redmi | Settings → SIM cards & mobile networks → Wi-Fi calling | It may be called "WLAN Calling" |
| Huawei / Honor | Settings → Mobile Network → Wi-Fi Calling | Often hidden in advanced settings |
| Google Pixel | Settings → Network & Internet → Mobile network → Wi-Fi preferred | Full integration with the system |
It's important to set network priority correctly. The VoWiFi settings menu often prompts you to choose between "Prefer Wi-Fi" or "Prefer Mobile Network." For issues with poor indoor signal strength, it's best to choose the former.
Instructions for iPhone (iOS) users
Apple smartphone owners are the luckiest of all—their setup process is highly unified and doesn't depend on the phone model (starting with the iPhone 5S). The iOS interface is identical across all devices, eliminating confusion. However, there's one important caveat: the feature may not appear if the carrier hasn't transferred the settings profile, but this is rare for Megafon.
To enable Wi-Fi calling on your iPhone, follow these steps:
- 🍏 Open the app
Settingson the main screen. - 📞 Scroll down the list and select a section
Telephone. - 📡 Find the item
Wi-Fi callingand go inside. - ✅ Move the slider to the “On” position (green color).
After activation, the system may request confirmation of your address for emergency services. This is a standard safety procedure required by law in many countries. Enter your current address, even if you are at home, as the operator will receive these coordinates when calling 911 (112) if you are unable to speak.
⚠️ Attention: If "Wi-Fi" appears next to the carrier name in the status bar after enabling the feature, everything is configured correctly. If you only see the carrier name, try restarting your device.
iOS also features the "On Other Devices" feature, which allows you to receive calls from your iPhone's SIM card on your iPad, Mac, or iPod touch, as long as they're connected to the same Wi-Fi network and use the same Apple ID. This is convenient for those within the Apple ecosystem.
Solutions to common problems and errors
Despite the simplicity of setup, users may encounter situations where the feature doesn't work. Most often, the problem stems from a router settings conflict or a temporary glitch on the operator's end. Let's look at some common scenarios.
If the VoWiFi icon isn't in the status bar but the service is connected, try switching to Airplane Mode. Turn Airplane Mode on for 10-15 seconds, then turn it off. This will force your phone to re-register with the network and update its service profile.
Another common cause is router security settings. VoWiFi technology requires open ports for the SIP and IPSec protocols. If you have a corporate firewall or strict parental controls, they may block voice traffic.
Let's look at a table of possible errors and ways to solve them:
| Symptom | Possible cause | Solution |
|---|---|---|
| No VoWiFi icon | The service is not activated on the operator's side. | Check via USSD *117*0059# |
| The sound is interrupted | Unstable Wi-Fi signal | Move closer to the router or change the channel |
| The phone does not switch to Wi-Fi | Cellular network priority is enabled | Change priority settings in the phone menu |
| Registration error | SIM card problems | Replace your SIM card at a Megafon office |
It's also worth considering that some routers, especially older models or ISP devices with limited functionality, may not process VoWiFi data packets correctly. In this case, rebooting the router or updating its firmware may help.
Advantages and features of pricing
Using Wi-Fi calling offers Megafon subscribers a number of undeniable advantages that go beyond simply "getting a signal." First and foremost is sound quality. Since the connection is more stable than cellular indoors, voice is transmitted in HD quality, without the characteristic tinny sound or echo.
The second important benefit is battery savings. Searching for a cellular network in a weak area (for example, in a basement or the back of a building) forces the phone's modem to work at its maximum capacity, quickly draining the battery. When connected to Wi-Fi, power consumption is reduced because the Wi-Fi module operates more efficiently in such conditions.
⚠️ Attention: Wi-Fi calls may not work when roaming abroad if the host country's operator doesn't have the appropriate agreements. In the home region (Russia), the service works anywhere there's internet access.
As for pricing, Megafon doesn't charge any additional fees for using the technology. Billing is per-second, based on your plan. If you have a minute package, those minutes will be used up. If you have unlimited minutes, you don't pay anything. The only exception is calls to short numbers or emergency services, which may be charged separately.
Furthermore, this technology allows you to save your number in areas where there is no physical cellular coverage, such as in remote villages with good fiber optic coverage but no cell towers in your line of sight.
Frequently Asked Questions (FAQ)
Will minutes be deducted if I talk over Wi-Fi?
Yes, you're charged according to your base plan. If you have a pre-paid minute bundle, it will be used up. If your bundle is exhausted, you'll be charged per minute according to your plan. There's no separate charge for VoWiFi technology.
Is it possible to make calls via Wi-Fi if there is no cellular service at all?
Yes, that's the primary purpose of the technology. If your phone is in "Online Only" or "Offline" mode but connected to Wi-Fi and the service is activated, you'll be able to make and receive calls as usual.
Does internet connection quality affect call quality?
Absolutely. For a comfortable HD conversation, an internet speed of at least 1 Mbps per subscriber is recommended. Low speeds or high ping (latency) can cause interruptions or a robotic voice.
Do you need a special app for calls?
No, you don't need to install any additional apps (like Skype or WhatsApp). You use your phone's default dialer. The technology is built into the system and operates at the operator level.
Does this feature work if the Wi-Fi router distributes the Internet via a 4G modem?
Yes, it works. The main thing is that the device is connected to a Wi-Fi network and has internet access. The internet source (fiber optic, cable modem, or 4G router) is irrelevant to the VoWiFi technology itself.