How to disable Wi-Fi calls on Xiaomi: all the ways and nuances

Wi-Fi calls are a useful feature for stable communication in areas with poor mobile network coverage, but sometimes it can be uncomfortable. For example, when connecting to poor Wi-Fi networks, calls begin to interrupt, and the sound becomes robotic. Or you just want to save battery power, because VoWiFi consumes 15-20% more energy on active calls. In this article, we will examine all the ways to turn off VoWiFi on Xiaomi, Redmi and POCO smartphones, from standard MIUI settings to hidden parameters for power users.

It’s important to understand that the procedure can vary depending on the version of MIUI, the phone model, and even the carrier. We tested the instructions on the current firmware of 2026 (MIUI 14/15) and took into account the features of popular models – from Xiaomi 13 Pro to budget Redmi Note 12. If your phone runs on the old version of Android (below 10), some menu items may not be available – we will mention this too.

Why VoWiFi can interfere and when to turn it off

VoWiFi (Voice over Wi-Fi) technology allows you to make calls over the Internet instead of a cellular network, which in theory should improve the quality of communication, but in practice users face problems:

• 📶 Poor call quality when connected to congested or slow Wi-Fi networks (speed below 5 Mbps).
• 🔋 Increased battery consumption – Wi-Fi module is more active than a normal connection.
• 📱 Conflicts with VPN — corporate VPN Block VoWiFi, which prevents calls from being made.
• 🔒 Roaming problems – VoWiFi can automatically connect to paid networks in some countries.

Turning off VoWiFi makes sense if:

1. You often call in places with unstable Wi-Fi (cafes, airports, hotels).
2. Your carrier does not officially support VoWiFi (for example, some virtual carriers).
3. You’ve noticed that after the MIUI update, calls have stopped or the sound has gone.

If you decide to turn off VoWiFi but aren’t sure if your phone supports this feature, check the list of compatible models:

Method 1: Disable VoWiFi via standard MIUI settings

This is the simplest method that works on most modern Xiaomi smartphones, and the instructions are relevant for MIUI 12.5-15:

1. Open the Settings app (cog icon).
2. Go to SIM cards and mobile networks (or Mobile network on some models).
3. Choose yours. SIM-card (if two of them).
4. Find the call point over Wi-Fi or VoWiFi and move the slider to the off position.

If there is no Wi-Fi call point:

• 🔍 Try to find it through a search in the settings (lamp at the top of the screen).
• 📱 Check if your carrier supports VoWiFi (list below).
• 🔄 Update. MIUI Up to the latest version – in old firmware, the option may be hidden.

Check the version of MIUI in Settings → About the phone

Make sure that SIM-card

Turn off VPN (can block settings)

Restart your phone before changing-->

Operators supporting VoWiFi in Russia and CIS (2026):

• 🇷🇺 MTS – full support at all tariffs.
• 🇷🇺 Beeline – works, but may require activation through USSD-team *110*181#.
• 🇷🇺 MegaFon - only for subscribers with tariffs "Everything is possible" and "Everything is free".
• 🇷🇺 Tele2 – partial support (not on all Xiaomi models).
• 🇺🇦 Kyivstar / Vodafon Ukraine – works on most smartphones.
• 🇰🇿 Kcell / Tele2 KZ — requires manual adjustment.

⚠️ Note: Some firmware (e.g., Chinese version) MIUI) The Wi-Fi call point may be called Wi-Fi Calling or Volte & Wifi Calling. If you don't find it in the settings, try changing the system language to English - sometimes it helps to detect hidden options.

Method 2: Disconnect via the engineering menu (for power users)

If VoWiFi doesn't turn off as standard or if it's not available in the settings, you can use the engineering menu, which is a method that requires caution, because the wrong actions can disrupt the network.

Instructions:

1. Open the Phone app and type in the combination: ##4636## Some models may require #86583## or #869434###.
2. Select Phone Information (or Phone Information).
3. Scroll down to the Wi-Fi Calling section.
4. Click on the drop-down menu and select Disable or Off.
5. Save the changes and restart the phone.

If the engineering menu does not open:

• 🔧 Make sure you have global firmware (on Chinese versions) MIUI Engineering menus are often blocked).
• 📱 Check if the developer mode is disabled (includes in Settings). → The phone. → Version. MIUI — tap 7 times).
• 🔒 Some operators (for example, MegaFon) block access to the engineering menu - in this case, only resetting the network settings will help.

⚠️ Warning: Changes to the engineering menu can lead to network loss or incorrect operation SIM-If VoWiFi is lost after you turn off the signal, return the settings to the original state or reset the network to Settings. → Resetting settings → Resetting network settings.

Method 3: Disable VoWiFi via USSD-operator

Some operators allow you to manage VoWiFi through special USSD-This is true if the settings on the phone are missing or blocked. Below is a list of commands for popular operators:

How to use USSD-team:

1. Open the Phone app and go to the Keyboard tab.
2. Enter the command and press the call button.
3. Follow the instructions in response to the operator (usually confirm the shutdown number 0 or 1).
4. Reboot your phone to make the changes take effect.

It's important: USSD-Teams may vary by region. If the team does not work, check the current version on your operator's website or through support.

Method 4: Reset network settings (if VoWiFi is not disabled)

If none of the previous methods worked, the radical solution is resetting the network, which will bring all the communication parameters (including VoWiFi, VoLTE, APN) back to factory values. The data on the phone (photos, apps) will not be affected, but you will have to re-enter the passwords from Wi-Fi.

Instructions:

1. Open the settings → Reset settings.
2. Select Network Settings Reset (or Wi-Fi, Mobile Network, and Bluetooth Reset).
3. Confirm the action with a password / pattern lock.
4. After the reboot, check the VoWiFi status in the settings SIM-map.

1. Take a picture. QR-Wi-Fi codes (or write down passwords).

2. Check the settings APN In Settings → SIM-map → Access points (APN) — After they are reset, they will have to be reset.

3. If you use eSIM, make sure you have a backup profile.

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⚠️ Note: On some Xiaomi models (e.g. Redmi Note 10 Pro with firmware for India), network resets can cause loss of power. IMEI. To avoid this, write down before resetting. IMEI Your phone (can be found in Settings) → The phone. → General information or type *#06#).

Problems after VoWiFi shutdown and their solutions

Sometimes, after turning off VoWiFi, users experience side effects, and let's look at the most common cases and how to fix them:

If you notice that the quality of calls has deteriorated after turning off VoWiFi, try:

• 📶 Manually select the network 4G (LTE) customized.
• 🔄 Restart your phone in Safe Mode (hold the off button) →"Safe regime").
• 📱 Update the modem firmware (if available for your model).

How to check if VoWiFi is disabled

To make sure that VoWiFi is no longer active, follow the following steps:

1. Visual check: When you call, look at the network indicator in the status bar. If it shows VoWiFi, Wi-Fi Calling or the wave tube icon, the function still works. On some models (Xiaomi 13, Redmi Note 12), when VoWiFi is active, a separate icon appears in the notification bar.
2. Check through the engineering menu: Enter ##4636## → Phone information → See Wi-Fi Calling Provisioned status. Must be Not Provisioned.
3. Test call: Turn off mobile internet and Wi-Fi. Try making a call — if it passes, VoWiFi is off (the call is going through the cellular network).

If VoWiFi is still active, you’ve followed all the steps:

• 🔧 Check if the automatic Wi-Fi connection is enabled in the network settings.
• 📱 Remove and add again SIM-map (on some models, this resets the communication settings).
• 🔄 Make a full reset (but save data beforehand!).

💡

If VoWiFi does not turn off either way, the problem may be on the operator's side. Contact support and ask to disable the "Wi-Fi Calling" service on your number.

FAQ: Frequent questions about VoWiFi on Xiaomi