How to Set Up Wi-Fi Calling on Redmi Smartphones: A Complete Guide (2026)

Calls via Wi-Fi Calling (or VoWiFi) on smartphones Redmi — is a technology that allows you to make voice calls even without a mobile network, using an internet connection. This is especially useful in areas with poor 4G/5G coverage, such as basements, remote areas, or country houses. However, not all users know how to properly activate this feature and why it might not work.

In this article we will look at step-by-step VoWiFi setup on all current models Redmi (from Redmi Note 10 to Redmi 13 Pro), we'll explain how to check if your carrier supports this feature and provide recommendations for troubleshooting common issues. You'll also learn how to improve connection quality and what to do if Wi-Fi calls are dropping or not connecting.

What is VoWiFi and why is it needed on Redmi?

Wi-Fi Calling (or VoWiFi) is a communications standard that allows voice calls to be transmitted over the internet instead of traditional mobile networks. The technology is integrated into the firmware. MIUI and is supported by most modern smartphones Xiaomi Redmi.

Key benefits:

• 📶 Stable connection in areas with a weak cellular network signal (for example, in the metro or in rural areas).
• 💰 Saving When roaming: Wi-Fi calls are not charged as international calls.
• 🔋 Less battery consumption compared to using mobile internet for voice calls.
• 🎧 Best sound quality thanks to the codec HD Voice (if supported by the operator).

However, there are limitations. For example, Not all Russian operators officially support VoWiFi. Redmi - Some block the function at the SIM card levelConnection quality also depends on the speed and stability of your Wi-Fi router.

Which Redmi models support VoWiFi?

Function Wi-Fi Calling available on all smartphones Redmi, released after 2019, but with reservations:

If your model is not listed in the table, check support through the settings menu: go to Settings → SIM cards & mobile networks → [your SIM] → Wi-Fi callingIf the item is missing, the function is not supported by the hardware or is blocked by the operator.

⚠️ Attention: On some firmware versions MIUI In Russia, the VoWiFi function may be hidden even with hardware support. In this case, changing the firmware region will help. Global or EEA.

Step-by-step VoWiFi setup on Redmi

To enable Wi-Fi calling, follow these steps:

1. Open Settings and go to the section SIM cards and mobile networks.

2. Select your SIM card (if you have more than one).

3. Tap on the item Calls via Wi-Fi (or Wi-Fi Calling).

4. Activate the switch and confirm turning it on if prompted.

5. In some cases, you may need to restart your phone.

Once activated, an icon will appear in the status bar. Wi-Fi Calling (usually it's a tube with an antenna or an inscription VoWiFi). If the icon is missing, but the function is enabled, check operator support.

Update MIUI to the latest version|

Connect to a stable Wi-Fi network (2.4 GHz or 5 GHz)|

Make sure your SIM card supports VoLTE|

Check your balance (some operators block VoWiFi if your balance is negative) -->

How to check if your carrier supports VoWiFi

Even if the smartphone supports Wi-Fi CallingYour carrier may block this feature. Here's how to find out if it's available for your SIM card:

• 📱 Method 1: Enter USSD code ##4636##, go to Phone information and check the status VoWiFi provisioned. If 1 - supported, 0 - No.
• 🌐 Method 2: Check the operator's official website. For example, MTS And Beeline There are lists of supported devices.
• 💬 Method 3: Send an SMS with the text WIFI to a short number 111 (For Megaphone) or 5049 (For Tele2).

If your carrier doesn't support VoWiFi, you can try to bypass the restriction using apps like Google Voice or Skype, but this will not be a full replacement for the native function.

⚠️ Attention: Some operators (eg. Yota or virtual operators like Tinkoff Mobile) may not provide VoWiFi even on supported phones. In this case, the only option is to wait for updates or change your plan.

What if my operator doesn't support VoWiFi?

If your carrier doesn't provide official VoWiFi support, but your phone does support the feature, you can try the following workarounds:

1. Use VoIP apps (For example, Zoiper or Linphone) with setting up a SIP account.

2. Activate roaming (Sometimes VoWiFi appears in roaming even with operators who do not advertise it).

3. Change firmware to the global version MIUI (For example, MIUI Global or MIUI EEA), where the feature can be unlocked.

However, these methods do not guarantee stable operation and may violate the terms of the agreement with the operator.

Common VoWiFi Problems on Redmi and Their Solutions

If Wi-Fi calling isn't working, here are the most common causes and how to fix them:

If the problem persists, try resetting your network settings: go to Settings → System → Reset settings → Reset network settingsThis will delete saved Wi-Fi networks and mobile data settings, but it often helps with VoWiFi issues.

How to improve VoWiFi call quality on Redmi

To ensure clear and drop-free Wi-Fi calls, follow these tips:

• 📶 Use 5 GHz Wi-Fi instead of 2.4 GHz - less interference and higher speed.
• 🔄 Turn off battery saving for the application Telephone in the settings.
• 🛡️ Configure QoS on your router (priority for voice traffic).
• 🔇 Use a wired headset - this reduces audio delays.

You can also enable high quality sound mode (if supported by operator):

1. Go to Settings → Sound & Vibration → Call Quality.
2. Select HD voice or VoLTE/VoWiFi HD.

If calls are still interrupted, try limiting background processes: close all applications before the call and disable automatic software updates.

Alternative ways to make internet calls on Redmi

If native VoWiFi doesn't work, you can use alternative solutions:

• 📞 Google Voice — free internet calls (US number required).
• 💬 WhatsApp/Telegram — voice calls via instant messengers (but the other person must also use them).
• 📡 SIP clients (For example, Zoiper) - for connection to IP telephony.

The main disadvantage of alternatives is that they do not replace regular calls to numbers not registered with these services. For example, through WhatsApp You can't call a landline or a number without a messenger.

If you are looking for a full-fledged cellular service replacement, consider virtual carriers that support VoIP, such as: Sipnet or Mango TelecomThey provide real phone numbers that work over the internet.

FAQ: Frequently asked questions about VoWiFi on Redmi

Is it possible to use VoWiFi without a SIM card?

No, for work Wi-Fi Calling An active SIM card that supports this feature is required. Without a SIM card, Wi-Fi calling is not possible (unlike messaging apps like WhatsApp).

Why does VoWiFi only work with one SIM card on a dual-SIM Redmi?

This is a firmware limitation. MIUIOn most models Redmi VoWiFi can be activated only for one SIM card (usually for a slot SIM 1). To change, rearrange the cards.

Will VoWiFi work when roaming?

Yes, but it depends on the operator. Some (for example, MTS) allow VoWiFi in roaming without additional charge, others (for example, Megaphone) may block the function or charge calls as international.

Is it possible to call another number via VoWiFi without internet?

No, Wi-Fi Calling Requires an internet connection. If Wi-Fi goes down, the call will be disconnected (unlike regular cellular calls, which switch to 2G/3G/4G).

How to disable VoWiFi on Redmi?

Go to Settings → SIM cards & mobile networks → [your SIM] → Wi-Fi calling and disable the switch. You can also disable the feature through the quick settings menu (swipe down from the top of the screen).