What Is VoLTE and What Are Its Benefits on Xiaomi, Redmi, and POCO Phones?

 Voice over LTE (VoLTE) is a modern telecommunication technology that transforms traditional voice calls into digital data packets transmitted over LTE networks. Unlike standard 2G or 3G calls that rely on analog voice channels, VoLTE delivers HD-quality voice, faster connections, and improved network efficiency.

For Xiaomi users — whether you own a Redmi Note 8 Pro, Xiaomi Mi A2, or any other Xiaomi, Redmi, or POCO device — enabling VoLTE enhances your calling experience while maintaining reliable internet connectivity.

This guide explains what VoLTE is, how it works on Xiaomi devices, how to activate it, and the benefits you’ll notice immediately after enabling it.

Did you know? For a complete guide on this topic, check out the Xiaomi Learning Hub and explore related tips in the Connectivity & Network Topic Hub.

🔹 What Is VoLTE and How Does It Work?

VoLTE stands for Voice over Long-Term Evolution. In simple terms, it allows voice calls to be transmitted as data packets over the 4G LTE network, rather than through traditional 2G/3G voice channels.

How VoLTE Transforms Calls

  • Voice data is digitized, compressed, and transmitted as packets over LTE.

  • This allows faster transmission (up to 13 Kbps) compared to the older analog method (around 8 Kbps).

  • Calls connect almost instantly, reducing latency and dropped calls.

  • Audio is clearer, producing HD voice quality that captures natural tones.

Unlike other voice-over-IP (VoIP) services like Skype, WhatsApp, or Viber, VoLTE does not require a separate internet app and consumes less battery. It works seamlessly on 4G LTE networks and can also support Wi-Fi calling in areas with weak cellular coverage.

💡 Pro Tip: VoLTE allows simultaneous voice and data usage. This means you can browse the web, stream music, or check emails while on a call, which is not always possible on 2G or 3G networks.

🔹 How to Enable VoLTE on Xiaomi, Redmi, or POCO Phones

Many Xiaomi devices have VoLTE disabled by default. Activating it is straightforward and takes just a few steps.

Step 1: Enable VoLTE via Dialer Code

  1. Open the Phone app on your Xiaomi device.

  2. Dial the code:

    *#*#86583#*#*

  3. You will see a message: “VoLTE carrier check was disabled”. This confirms that VoLTE is now enabled.

Step 2: Enable VoLTE in Settings

  1. Go to:

    Settings → SIM cards & mobile networks

  2. Find the option “Use VoLTE” and toggle it ON.

  3. If your device has dual SIMs, enable VoLTE individually for each SIM:

    Settings → SIM cards & mobile networks → SIM 1 / SIM 2 → Use VoLTE

Once activated, your Xiaomi phone can make HD voice calls over 4G LTE. VoLTE functionality also depends on your network provider and whether they support this technology.

🔹 Benefits of Using VoLTE on Xiaomi Phones

Activating VoLTE brings multiple advantages over traditional voice calling:

1️⃣ HD Voice Quality

  • Clearer and more natural audio.

  • Reduced background noise.

  • Easier to understand even in crowded or noisy environments.

2️⃣ Faster Call Setup

  • Calls connect almost instantly, eliminating delays typical of 2G or 3G calls.

  • Reduces the chance of dropped calls during network handovers.

3️⃣ Simultaneous Voice and Data Usage

  • Browse the internet or use apps while on a call.

  • No interruptions to streaming or downloading during conversations.

4️⃣ Battery Efficiency

  • Unlike VoIP apps, VoLTE consumes less power because it uses the LTE network directly.

  • Saves energy during extended conversations.

5️⃣ Improved Indoor Coverage

  • VoLTE works with Wi-Fi calling, allowing better connectivity indoors or in areas with weak cellular signals.

  • Ensures a more stable call experience.

6️⃣ Compatibility With Modern Network Features

  • Enables advanced telephony features, such as:

    • Call waiting with HD voice

    • Conference calls

    • Enhanced 4G LTE network performance

🔹 Common Questions About VoLTE on Xiaomi Devices

Q1: Will VoLTE work on all Xiaomi phones?

Most modern Xiaomi, Redmi, and POCO devices support VoLTE. Older models or certain regional versions may not have it enabled.

Q2: Does VoLTE consume mobile data?

No, VoLTE uses your voice plan, not regular data. It simply transmits voice as digital packets over LTE.

Q3: Can I use VoLTE on dual SIM Xiaomi phones?

Yes, you can enable VoLTE separately for SIM 1 and SIM 2, depending on carrier support.

Q4: Will VoLTE work internationally?

VoLTE compatibility depends on both your phone and the carrier. When traveling abroad, it may work only on compatible 4G networks.

🔹 Troubleshooting VoLTE Issues on Xiaomi Phones

  1. Call Drops or Poor Voice Quality

    • Ensure you are in an area with strong 4G LTE coverage.

    • Toggle VoLTE OFF and ON again via Settings.

  2. VoLTE Option Not Showing

    • Make sure your SIM card supports VoLTE.

    • Restart the phone after entering the dialer code.

  3. HD Voice Not Working

    • Check if your carrier supports HD voice calls.

    • Ensure only one SIM is active if dual SIM mode causes conflicts.

💡 Tip: Restarting your Xiaomi phone after enabling VoLTE often resolves most connectivity issues.

🔹 Summary

VoLTE (Voice over LTE) is a powerful feature on Xiaomi, Redmi, and POCO phones that significantly improves voice call quality, speed, and reliability. By enabling VoLTE:

  • Calls are clearer (HD quality) and faster.

  • You can use mobile data while talking.

  • Battery life is improved compared to VoIP apps.

  • Indoor and low-signal coverage is enhanced through Wi-Fi calling.

Activating VoLTE is easy, either through a dialer code or Settings → SIM cards & mobile networks → Use VoLTE. Once enabled, your Xiaomi smartphone will deliver a superior calling experience that is modern, efficient, and reliable.

Read related posts on OnePlus: What Is VoLTE and What Are Its Benefits on Xiaomi, Redmi, and POCO Phones?

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