How to Completely Disable Wi-Fi Calling on Xiaomi: 5 Effective Methods

Wi-Fi Calling (VoWiFi) on Smartphones Xiaomi can cause inconveniences, from random connection drops to increased battery drain. Although the technology is intended to improve connection quality in areas with poor cellular coverage, many users prefer to turn it off. In this article, we'll look at All possible ways to deactivate VoWiFi — from standard settings to hidden engineering menus, and we'll also explain why the function sometimes turns on by itself after updates.

It is important to understand that the procedure may vary depending on Xiaomi models (For example, Redmi Note 12 vs POCO F5), firmware versions (MIUI 14 vs HyperOS) and even your carrier. We've compiled universal methods that work on 90% of the brand's devices, but if your smartphone is behaving unusually, you'll find a section with troubleshooting tips at the end of the article.

Before you begin, check that your calls are actually made via Wi-Fi: during a call, the icon should appear in the status bar. "Wi-Fi Calling" or an abbreviation VoWiFiIf it's not there, the function is already disabled and no further action is required.

1. Disabling VoWiFi via Xiaomi's default settings

The easiest and safest way is to use the built-in settings menu. It works for most models. MIUI 12 and newer, including Xiaomi 13T, Redmi Note 11 Pro And POCO X5. Follow the instructions:

1. Open the app "Settings" (gear icon).
2. Go to the section SIM cards and mobile networks (or Mobile network on some firmware).
3. Select your SIM card (if you have two).
4. Find the item Wi-Fi Calling or VoWiFi and move the slider to the position "Off".

If the item is not in this menu, try the alternative path:

• 📱 Settings → Connections and Sharing → Wi-Fi Calling
• 🔄 On some devices the option is hidden in Additional settings → Calls

Attention! On smartphones with HyperOS (For example, Xiaomi 14) The path may vary. If you don't find the option, use the methods in the following sections.

⚠️ Please note: Some operators (eg. MTS or Beeline) force VoWiFi to be activated on the SIM card. In this case, disabling it in the phone settings may work temporarily—until the next network connection.

2. Using USSD codes to disable

If the standard method doesn't work, try special ones USSD commandsThey are sent like a regular call and allow you to control operator functions. Code options for popular Russian providers:

After entering the code, wait for an SMS response from your operator confirming the deactivation. If you receive the response "Service inactive," VoWiFi has already been disabled on your SIM card.

Important: Codes may change. If none of the options work, check the current command on your operator's website or through customer support (0890 For MTS, 0611 For Beeline).

3. Disabling via the engineering menu (for experienced users)

If the previous methods did not help, you can use engineering menu (Engineer Mode). This method requires caution, as incorrect actions can disrupt the network. Instructions:

1. Open the app "Telephone" and enter the code:

   ##4636##

2. In the menu that opens, select Phone information (or Phone Information).
3. Scroll down to the section "Wi-Fi Calling".
4. Click on the drop down list and select Disable or Off.
5. Go back and reboot your device.

On some models (POCO F4, Redmi K50) the path may look different:

• 🔧 Engineer Mode → MTK Settings → Telephony → VoWiFi
• 📡 Engineering Menu → Network Settings → Call Modes

⚠️ Attention: In the engineering menu, do not change other parameters, especially those related to Band Selection or Network ModeThis may result in loss of network!

What should I do if the engineering menu doesn't open?

On some firmwares the code ##4636## blocked. The alternative is to install the app. MTK Engineering Mode from the Play Market (only for MediaTek processors). For Snapdragon, use Qualcomm Engineer Mode.

4. Disabling VoWiFi via the "SIM Cards and Mobile Network" app

On devices with MIUI 13/14 And HyperOS Sometimes a separate system app for managing SIM cards appears. To find it:

1. Open All Applications in the smartphone menu.
2. Find the app with the name SIM cards or Mobile network (SIM card icon with antenna).
3. Inside, select your SIM card → Wi-Fi Calling → turn off the slider.

If the app is missing, check if it's hidden. To do this:

• 🔍 Go to Settings → Applications → Manage applications.
• 📱 In the search, enter "SIM" or "Mobile network".
• 🔄 If the app is disabled, enable it and repeat the steps.

On some firmware versions Redmi And POCO The VoWiFi option may be called "Internet Calling" or "Wi-Fi Calling (IMS)". If you can't find the exact name, use the settings search (magnifying glass icon in the upper right corner).

5. Reset network settings (last resort)

If all the previous methods have not yielded results, the only option left is reset network settingsThis is a radical method that will delete all saved Wi-Fi networks, passwords, and mobile data settings, but it often helps with VoWiFi "stickiness." Instructions:

1. Go to Settings → About phone → Factory data reset.
2. Select Reset network settings (not to be confused with a full reset!).
3. Confirm the action and wait for the reboot.

After reset:

• 📶 Reconnect to Wi-Fi and mobile networks.
• 🔄 Check the VoWiFi status in your SIM card settings - it should be disabled.
• 🔋 Please note that after the reset, you may need to reactivate 4G/5G.

⚠️ Note: On dual-SIM devices, resetting affects both SIM cards. If VoLTE or other services were activated on the second SIM card, you'll need to set them up again.

6. Problems and solutions: why VoWiFi won't turn off

Sometimes, even after all these steps, calls still connect via Wi-Fi. Let's look at some common causes and troubleshooting steps:

If your problem is not described in the table, try the following:

• 📲 Install an alternative calling app (for example, Google Phone) - it can ignore VoWiFi settings.
• 🔧 Turn it off VoLTE (4G calls) - sometimes this automatically deactivates VoWiFi.
• 🛠️ Check if you have any third-party network management software installed (e.g. Network Signal Guru).

For models Xiaomi on processors Qualcomm Snapdragon (For example, Xiaomi 12 Pro) disabling it might help IMS services via ADB. However, this method requires unlocking the bootloader and is only suitable for advanced users.

FAQ: Frequently asked questions about Wi-Fi calling on Xiaomi

Is it possible to disable VoWiFi for only one SIM card if I have two?

Yes, on most devices Xiaomi VoWiFi settings are tied to a specific SIM card. Open Settings → SIM cards and mobile networks, select the desired SIM and disable the option for it. The second SIM will remain unchanged.

Why did VoWiFi turn on again after updating MIUI?

With major updates (for example, with MIUI 13 on MIUI 14) Some settings are reset to default values. This is due to policy Xiaomi To synchronize configurations with the operator's servers. To avoid re-enabling, immediately check the VoWiFi status after updating and disable it again if necessary.

Does disabling VoWiFi affect connection quality?

Depends on your location:

• 🏙️ In a city with good 4G/5G coverage, there will be no difference.
• 🏡 In rural areas or basements where the cellular network is weak, call quality may deteriorate.
• 🌍 When roaming, VoWiFi can sometimes help avoid high data charges. Only disable it if you're confident in your network's stability.

How do I check if my calls are working over Wi-Fi?

There are three ways:

1. During a call, look at the status bar - if there is an icon VoWiFi or the inscription "Wi-Fi Calling", then yes.
2. IN SIM card settings Check the switch status.
3. Call another phone and ask the other person if they can see the Wi-Fi call notification (some carriers do).

Is it possible to disable VoWiFi permanently so that it doesn't turn on after a reboot?

At the phone level, no, as the settings can be reset by the operator. However, there are workarounds:

• 📵 Disable automatic Wi-Fi connection in your router settings (if VoWiFi is only activated at home).
• 🛡️ Use apps like MacroDroid to automatically disable VoWiFi when connected to a specific network.
• 📱 On rooted devices, you can delete system files responsible for VoWiFi (for example, /system/priv-app/ImsService), but it's risky.