VoLTE on Xiaomi Redmi phone: how it works, why you need and how to turn on

Have you ever noticed that while you're on the phone, the Internet suddenly stops working? Or you call in a place with a bad signal and your voice is interrupted as if it's talking from a barrel? Chances are, your Xiaomi Redmi doesn't use VoLTE technology -- it's a waste of it. This feature dramatically changes the quality of mobile communication, but many users don't even know it exists.

In this article, we will explain what VoLTE is on Redmi phones, why operators are actively switching subscribers to this technology, and most importantly, how to turn it on your device. You will learn which Xiaomi models support VoLTE, how to check its performance, and what to do if the Suddenly feature is inactive. And we will reveal one important nuance that even the official instructions of Xiaomi are silent about: it concerns the balance between communication quality and battery consumption.

What is VoLTE and why is it important for Redmi?

VoLTE (Voice over LTE) is a voice technology that is used over a 4G LTE network, not over outdated 2G/3G networks, as it used to be, and simply put, your voice is converted into digital data packets and transmitted over the same channel as the Internet, with several key benefits:

• 📞 Instant connection – the call is connected to 1-2 seconds against 5-10 second-in-second 2G/3G).
• 🎧 Pure sound in HD-Quality – wide bandwidth allows you to transmit voice in format AMR-WB (16 kHz), which is comparable to the quality of Skype or Zoom.
• 📶 Stable signal – even with weak coverage 4G The call will not stop because the network prioritizes voice traffic.
• 🌐 Internet while talking – you can talk and use mobile Internet at the same time (in the Internet) 3G The Internet is shut down when you call).

For owners of Xiaomi Redmi this is especially true because budget models often save on antennas, and VoLTE compensates for the weak signal through more efficient use of the network. In addition, many operators (for example, MTS, Beeline, Tele2) are already beginning to turn off 2G/3G networks in favor of 4G/5G. Without VoLTE, your phone risks being left without the ability to call!

⚠️ Note: If your Redmi does not support VoLTE, after shutting down 2G/3G You can’t call at all – only via messengers like WhatsApp or Viber.

What Xiaomi Redmi models support VoLTE?

Almost all Xiaomi Redmi smartphones released after 2018 support VoLTE.

• 📱 Redmi Note 5/6/7/8/9/10/11/12 — Full support for VoLTE on all modifications (including Pro, Pro, Pro)+, T).
• 📱 Redmi 9A/9C/10A/10C — Support, but may have problems with some operators (e.g. Iota).
• 📱 Redmi K20/K30/K40/K50 — VoLTE works out of the box, but on the K20 Pro sometimes requires manual adjustment.
• ❌ Redmi 4X/5A/6A and older – VoLTE is either missing or is unstable (depending on firmware).

To find out exactly if your model supports VoLTE, check the specifications on the official Xiaomi website or use the app. CPU-Z (section → Note: Even if there is hardware support, the operator can block the function at the level. SIM-map.

How to enable VoLTE on Xiaomi Redmi: step-by-step instructions

There are two ways to activate VoLTE on Redmi: through the phone's settings or through the engineering menu, starting with the simplest method.

Method 1: Using standard MIUI settings

This method works on most models with MIUI 12 firmware and later:

1. Open the Settings app (cog icon).
2. Go to section. SIM-maps and mobile networks.
3. Choose yours. SIM-card (if there are several).
4. Tap on the network type or preferred network type.
5. Select the 4G (preferably)/LTE option or 4G/3G/2G (auto).
6. Go back and find the VoLTE switch (may be called Improved Calls or the VoLTE switch). HD-call-up).
7. Activate the slider and confirm the action.

If the VoLTE item is not on the menu, it means:

• Yours. SIM-The card does not support technology (replace it with a new one). USIM or 4G-card).
• The operator does not provide the service in your region (check on the operator's website).
• You have custom firmware installed (like LineageOS) where VoLTE is disabled by default.

Update. MIUI last-minute|Make sure that SIM-card 4G|Check the VoLTE coverage with your operator|Reboot your phone after the changes-->

Method 2: Engineering menu (for experienced users)

If VoLTE is not enabled in the standard way, you can try activating it through the engineering menu. Be careful - incorrect settings can disrupt the network!

Instructions:

1. Open the phone app and dial the combination: ##4636##.
2. In the menu that opens, select Phone Information.
3. Scroll down to the Set preferred network type section.
4. Select LTE only or LTE/WCDMA/GSM auto.
5. Go back and find the VoLTE provisioned option – if it is Enabled, then the function is active.

⚠️ Note: On some firmware (China) ROM) There may be no engineering menu. Don't try to activate VoLTE through third-party applications like MTK Engineering Mode – This Can Lead to Loss IMEI!

Why VoLTE may not work on Redmi (and how to fix it)

Even if you've enabled VoLTE correctly, sometimes it doesn't work, and here are the most common reasons and solutions.

If none of the solutions worked, try resetting your network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Resetting of mobile network settings.
3. Confirm the action and restart the phone.

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Before resetting the network, save APN-settings of your operator - they can be found on the Internet by requesting "name of operator" APN setting 4G".

VoLTE vs Wi-Fi Calling: What’s Best for Xiaomi Redmi

Many people confuse VoLTE and Wi-Fi Calling, but these are two different technologies.

• 📶 VoLTE – works through a mobile network 4G. It requires good coverage, but does not depend on Wi-Fi.
• 📶 Wi-Fi Calling – Uses the Internet over Wi-Fi, useful in places with poor mobile signal (for example, in basements or outside the city).

On Xiaomi Redmi, you can use both functions simultaneously, for example, at home you can call over Wi-Fi, and on the street you can automatically switch to VoLTE.

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Activate the Wi-Fi Calling switch (could be called Wi-Fi Calls).

⚠️ Note: Some operators (e.g. Tele2) require separate activation of Wi-Fi Calling via the Internet. USSD-team or personal account. check the details with your provider.

VoLTE and battery: how to save power Redmi

One of the main disadvantages of VoLTE is increased battery consumption, which is due to the fact that the 4G module consumes more power than 2G/3G.

• 🔋 Turn off background data transfer for unnecessary applications in Settings → Annexes → Permits → Auto-start.
• 🔋 Enable the Battery Savings mode in Settings → Battery.
• 🔋 Use adaptive brightness – a bright screen drains the battery faster than VoLTE.
• 🔋 Update. MIUI — In new versions, the modem energy consumption is optimized.

Important nuance: on some Redmi models (for example, Redmi Note) 10 Pro) VoLTE may conflict with the function "Dual connection" 4G" (Dual 4G). If you use two of them SIM-Maps, try to disable Dual 4G In the network settings, this will extend the battery life on the 10-15%.

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VoLTE consumes battery 5-10% faster than 3G, but compensates for this with more stable communication and time saving on dialups.

The future of VoLTE: what awaits owners Xiaomi Redmi

VoLTE technology continues to evolve, and some carriers are already testing VoNR (Voice over New Radio), the equivalent of VoLTE for 5G networks. 5G-enabled Redmi owners (such as the Redmi K50 or Redmi Note 12 Pro+) will be able to use VoNR in the future, but this feature is only available in test mode.

It is also worth keeping an eye on updates. MIUI — Xiaomi regularly adds support for new communication standards. MIUI 14 has been optimized for eSIM, which makes it easier to use VoLTE on virtual SIM-card.

If you are planning to buy a new Redmi, pay attention to models with Dual VoLTE support - this will allow you to use VoLTE on both of them. SIM-Cards simultaneously (relevant to Redmi Note 11 Pro)+ newer).

FAQ: Frequent questions about VoLTE on Xiaomi Redmi