Wi-Fi calls on Xiaomi for subscribers MegaFon: how to configure and use VoWiFi

What are Wi-Fi calls and why do MegaFon subscribers need them?

VoWiFi (Voice over Wi-Fi) allows you to make and receive calls over a wireless network instead of a cellular connection. For Megaphone subscribers, this means a stable connection even in areas with poor 4G/5G coverage - just connecting to a router or public access point, especially for owners of Xiaomi smartphones, who often face problems receiving in basements, elevators or country houses.

Advantages of VoWiFi on Xiaomi with Megaphone:

• 📞 Interrupted: Calls do not break off when the mobile network signal is weak if there is stable Wi-Fi
• 🌍 International calls: It's cheaper to communicate from abroad via local Wi-Fi, avoiding roaming
• 🔋 Battery savings: Smartphone doesn’t waste energy searching for cellular networks in dead zones
• 📱 Smooth transition: If you leave the Wi-Fi area during a conversation, the call will automatically switch to 4G (supported by the device)

It is important to understand that MegaFon officially supports VoWiFi only on a limited list of Xiaomi devices - even if your model is technically compatible with the technology, the operator can block its activation.

Xiaomi models support VoWiFi with Megaphone in 2026

Not all Xiaomi smartphones can handle Wi-Fi calls on the MegaFon network. The operator publishes an official list of supported devices, but it is updated often. At the time of 2026, the following models are confirmed to be compatible:

If your model is not listed, it does not mean complete incompatibility. Some users successfully activate VoWiFi on unofficially supported devices through an engineering menu or change the firmware region, but MegaFon does not guarantee stable operation in such cases.

⚠️ Warning: On Xiaomi smartphones with MediaTek processors (e.g., Redmi 10C, POCO M4 Pro), Wi-Fi calls may not work smoothly due to modem issues.

Step-by-step: how to turn on VoWiFi on Xiaomi for MegaFon

Before setting up, make sure that:

• 📱 Your Xiaomi smartphone from the official list of supported models
• 📶 The phone has a SIM- Megaphone card (not eSIM) inserted
• 🌐 Wi-Fi connection stable (speed from 2 Mbps)
• 🔄 Updates MIUI installed (version no lower than 13.0.5)

Now we move on to the setting:

1. Open the "Settings" section and go to the SIM- section of Maps and Mobile Networks.
2. Select SIM- MegaFon card (if there are several of them).
3. Tap on "Wi-Fi Calls" (on some firmware, the item is called Wi-Fi Calling).
4. Activate the switch and confirm the address for emergency services (required for Russia).
5. Wait for SMS from MegaFon with activation confirmation (comes within 5-10 minutes).

The "Wi-Fi" symbol appeared next to the network indicator |

SIM- map settings display "Connected" |

You can make a test call via Wi-Fi (turn off mobile data) |

It comes SMS from Megaphone with confirmation-->

If the "Wi-Fi Calls" item is not on the menu, it means:

• 🚫 Your model is not officially supported
• 🔄 Update required MIUI last-minute
• 📱 You need to change the firmware region to "Russia" (instruction below)

What to do if VoWiFi is not turned on: common errors

Even on supported Xiaomi models, users often face problems when activating Wi-Fi calls. Here are typical situations and their solutions:

If none of these methods worked, try resetting your network settings:

1. Go to Settings. → SIM-maps and mobile networks → Resetting network settings.
2. Confirm the action and restart the smartphone.
3. Re-activate VoWiFi.

⚠️ Warning: Some Xiaomi firmwares lose stored Wi-Fi passwords after resetting the network. Write them down in advance or back them up via Settings → Google → Backup.

How to change the firmware region to activate VoWiFi

If your Xiaomi doesn’t support VoWiFi due to regional restrictions, you can manually change the firmware region, which works on most global or European firmware devices.

Instructions:

1. Open the Settings app and go to About Phone.
2. Tap 5-7 times on the MIUI version until the notification “You became a developer” appears.
3. Return to the main settings menu and open Additional → for developers.
4. Find the Region (or Region) and select Russia.
5. Reboot your smartphone and check for the “Wi-Fi Calls” item.

If VoWiFi doesn’t appear after changing the region, try updating the firmware through Settings → System Update. Sometimes you need to completely flash through the Mi Flash Tool with a choice of regional version.

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Before changing region, back up your data via Mi Cloud or locally, and some settings (such as fingerprints) may be reset.

How to check the quality of VoWiFi communication and eliminate interference

Even after successful activation, Wi-Fi calls may not work well, and to assess the quality of the connection and improve it, follow the following steps:

Speed and stability test:

• 📊 Use the WiFi Analyzer app to check the signal strength (must be at least -60 dBm).
• 📞 Make a test call to 0500 (free MegaFon connection check).
• 🔊 Turn on speakerphone and assess for noise or voice delays.

Optimizing the router for VoWiFi:

• 🔄 Switch the router to the 5 GHz band (less interference than 2.4 GHz).
• 📶 Set your router closer to the call location or use the Mesh system for your large home.
• ⚡ Turn off traffic savings in the router settings (Qos, Bandwidth Control).
• 🔒 Enable WMM (Wi-Fi Multimedia) mode to prioritize voice traffic.

If problems persist, try connecting to another Wi-Fi network. Sometimes the cause of bad sound is the settings of the provider (for example, blocking UDP- packets on the ports of 500/4500).

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For VoWiFi to work smoothly, the Internet speed must be at least 1 Mbps in both directions, and at lower speeds, communication interruptions or echoes during a conversation may occur.

Alternative ways to call via Wi-Fi on Xiaomi

If standard VoWiFi doesn’t work or your Xiaomi model isn’t supported, you can use alternative methods of calling over the Internet:

1. "Megaphone Calls" appendix

• 📱 Install the official app from Google Play.
• 🔑 Sign in with the Megaphone number.
• 📞 Call the internet even without a SIM- card (active rate required).

2. Google Duo or WhatsApp

• 🌍 Works in any country via Wi-Fi.
• 💬 Free calls between users of these apps.
• 📶 Calls to regular numbers will require a minute rate.

3. SIP settings via the "Zoiper" application

• 🔧 Suitable for advanced users.
• 📡 Requires manual setting of the SIP- MegaFon account.
• 🔒 Can be blocked by some routers.

The main disadvantage of alternative methods is that there is no smooth transition between Wi-Fi and the cellular network, and when you leave the Wi-Fi coverage, the call will be interrupted.

FAQ: Frequent questions about VoWiFi on Xiaomi with MegaFon