VoLTE in Xiaomi Redmi 8 Pro: everything you need to know about voice technology 4G

Have you ever noticed that while talking on the phone, the Internet suddenly “slows down” or disappears altogether? With the Xiaomi Redmi 8 Pro (and many other smartphones), this problem is solved by VoLTE technology – voice communication through the Internet. 4G-But what is it in practice, why not everyone has it out of the box, and how to set it up? In this article, we will understand all the nuances of VoLTE specifically for the Redmi 8 Pro, including hidden settings, possible errors and how to fix them.

Many users mistakenly think that VoLTE is just “enhanced sound” or “fast internet while calling,” but in fact, it solves much deeper problems, from saving battery power to being compatible with modern networks. 5G. And for the 2019 Redmi 8 Pro, VoLTE support was one of the key updates Xiaomi added later through firmware. If your phone doesn't support VoLTE out of the box, it doesn't mean it doesn't exist at all.

In this article you will find:

• 🔍 What is VoLTE and how is it different from regular calls 2G/3G.
• ⚙️ How to Check VoLTE Support on Your Redmi 8 Pro (Including Hidden Codes).
• 📶 Step-by-step instructions for inclusion, taking into account the features of firmware MIUI.
• ⚠️ Common problems and their solutions (from lack of badge to communication breaks).
• 📊 VoLTE vs VoWiFi Comparison – Which Is Better for the Redmi 8 Pro.

1. VoLTE in Xiaomi Redmi 8 Pro: Technical Basics

VoLTE Technology (Voice over) LTE) It allows you to transmit voice traffic directly through the network. 4G, Not to switch to outdated standards. 2G or 3G, For Xiaomi Redmi 8 Pro, this means:

• 📞 Instant connection – the call connects 2-3 times faster than the call 3G.
• 🔊 Pure sound in format HD Voice (broadband audio codec) AMR-WB).
• 📶 Continuous Internet – during a conversation, the speed of mobile data does not fall.
• 🔋 Battery savings – no need to constantly switch between networks.

But there's a caveat: the Redmi 8 Pro didn't initially support VoLTE in all regions, because Xiaomi adapts firmware to specific carriers, for example, in Europe and India VoLTE is often activated by default, and in Russia or Ukraine it may require manual configuration, and the technology itself depends on operator support — if your mobile provider doesn't provide VoLTE, you can't turn it on even a compatible phone.

It is important to understand that VoLTE is not just a feature, but a prerequisite for correct operation in networks. 5G. Redmi 8 Pro does not support 5G, But many operators are already starting to shut down. 3G-And without VoLTE, your phone is at risk of being unable to make calls in the future. AT&T completely shut down. 3G In 2022, customers with older phones lost their ability to make calls.

2.How to check if your Redmi 8 Pro VoLTE supports

Before you set up VoLTE, make sure your Xiaomi Redmi 8 Pro supports it at all. There are several ways to check:

Method 1: Checking through settings

Open the Settings menu → SIM-maps and mobile networks → [choose SIM-map] → Turn on VoLTE. If you don't have that option, then either the firmware doesn't support VoLTE, or it's hidden. In the latter case, method 2 will help.

Method 2: Engineering menu (hidden codes)

Enter the combination in the phone application:

##4636##

Next, go to Phone Information and find VoLTE provisioned. If it costs 1, support is available, 0 is not.

Method 3: Checking through IMEI

Find out. IMEI Your phone (enter *#06#) and check it on sites like IMEI.info. The device specifications should be marked VoLTE supported. Please note that even if the site shows support, this does not guarantee the performance of your operator!

If none of these methods have confirmed VoLTE support, perhaps your Redmi 8 Pro is designed for a market where the technology is not in demand (for example, some batches for China), in which case you can either accept it or try to flash the device on a global or European version. MIUI.

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If there is no VoLTE option in the settings, but the engineering menu shows support, try pasting. SIM-A card of an operator that accurately supports the technology (e.g. Jio in India or T-Mobile in the U.S.) sometimes only appears when a compatible network is detected.

3. Step-by-step instructions: how to enable VoLTE on Xiaomi Redmi 8 Pro

If your phone supports VoLTE but the option is disabled, follow this instruction. Please note: the steps may vary slightly depending on the version. MIUI (for example, MIUI 12 and MIUI 14 menu slightly different).

Update the firmware to the latest version|Check the balance. SIM-Cards (some operators block VoLTE when the balance is negative)|Make sure that SIM-card supports VoLTE (the list of compatible cards is usually available on the operator's website)|Connect to the network. 4G (VoLTE does not work in mode 2G/3G)-->

Step 1: Update the firmware

VoLTE in Redmi 8 Pro is often activated through updates. Check for fresh firmware: Settings → The phone. → System update. If you have an update, install it and restart your phone.

Step 2: Enabling VoLTE in the settings

Go along the way: Settings → SIM-maps and mobile networks → [choose SIM-map] → Enable VoLTE.

If you don’t have an option, try an alternative route:

Settings → Additionally. → Mobile network → Enable VoLTE

Step 3: Set up a preferred network type

Make sure the phone is set to use 4G: Settings → SIM-maps and mobile networks → Preferred type of network → 4G (preferably).

If chosen. 3G or 2G, VoLTE will not work.

Step 4: Reset and Verify

Once you turn on VoLTE, restart your phone. To make sure the technology works, make a test call. Notice the icon in the status bar:

• 📞 HD VoLTE – the technology is active.
• 📶 No icon – VoLTE does not work (see Problems and Solutions section»).

If after all the manipulations VoLTE and did not work, check:

• 🔄 Compatibility SIM-Cards (some operators require replacement of old ones) SIM New, supportive VoLTE).
• 📡 Presence of coverage 4G In your area (VoLTE only works where there is a stable one) 4G-signal).
• 🔧 Settings APN (Sometimes manual input of operator parameters is required).

4. Common VoLTE issues on Redmi 8 Pro and their solutions

Even if VoLTE is enabled, Redmi 8 Pro users often encounter bugs, and let’s look at the most common ones and how to fix them.

Problem 1: VoLTE is turned on, but calls don't go through

If the call connection is reset or the subscriber does not hear you, the reason may be:

• 🔇 Incompatible audio codec – some operators use EVS, which is not supported by Redmi 8 Pro. Solution: Contact the operator and request to switch to AMR-WB.
• 📵 Operator-Blocked – some providers restrict VoLTE for certain models. Solution: Call support and check if the service is activated for your number.

Problem 2: VoLTE sign appears, but the Internet goes missing during the call

This means that the phone is switching to the 3G. Causes:

• 🔄 Wrong settings APN — Check the parameters in the settings → SIM-maps and mobile networks → Access points (APN). VoLTE often requires a separate APN (check with the operator).
• 🔋 Energy saving mode - turn it off in Settings → Battery and productivity.

Problem 3: VoLTE works, but the sound is interrupted

If you hear any noise or noise during the conversation, try:

• 🔊 Disable Bluetooth – some headsets conflict with VoLTE.
• 📶 Switch to another cell – in network settings, select manual search and connect to another tower 4G.
• 🔄 Reset network settings in Settings → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.

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If after all the manipulations, VoLTE doesn't work, it might be the firmware problem. MIUI (for example, MIUI EU PixelExperience, where VoLTE support is often better implemented.

⚠️ Note: If you use two of these SIM-VoLTE can only work on one of the cards (usually the one in the slot). SIM 1) To activate VoLTE on the second SIM, You may need to move the cards in places or change the settings in the engineering menu.

5. VoLTE vs VoWiFi: Which is better for Xiaomi Redmi 8 Pro?

In addition to VoLTE, the Redmi 8 Pro also has voice technology called VoWiFi (Voice over Wi-Fi), which allows you to make calls over Wi-Fi networks, which is useful in areas with poor coverage. 4G. But what's better:

For the Redmi 8 Pro, the best option is to use both technologies:

• 📶 VoLTE – for calls in the coverage area 4G.
• 📶 VoWiFi – for calls in places with poor signal (for example, in the basement or outside the city).

To enable VoWiFi, go to: Settings → SIM-maps and mobile networks → [choose SIM] → Enable VoWiFi.

Please note: VoWiFi may require additional operator-side settings (for example, MTS or Beeline need to activate the service through their personal account).

⚠️ Note: Concurrent use of VoLTE and VoWiFi may lead to conflicts in some of the Redmi 8 Pro firmware. If you notice communication problems, disable one of the technologies.

6.How to improve the quality of VoLTE calls on Redmi 8 Pro

Even if VoLTE works, the quality of communication can be improved.

Advice 1: Optimize your network settings

From the Engineering Menu (#4636###) go to Phone Information and select:

• 📶 Set preferred network type → LTE only (if not necessary) 2G/3G).
• 🔊 Enhanced 4G LTE Mode → Enabled.

Advice 2: Use a high-quality microphone

Redmi 8 Pro has two microphones: the main and noise suppressor.

• 🎤 Check if the microphones are covered with a cover or fingers.
• 🔧 Clean the microphone holes from dust (use a soft brush).
• 🔇 Turn off noise cancellation in the call settings (sometimes it makes the sound worse).

Tip 3: Update the radio module

Sometimes problems with VoLTE are solved by updating the modem (radio module).

1. Download the latest firmware version for your model from the official Xiaomi website.
2. Install it through System Update or MI Flash Tool (for experienced users).

If the quality of communication still leaves much to be desired, try using an external headset with support. HD Voice (such as Xiaomi AirDots Pro wireless headphones) often deliver a cleaner sound than the built-in speaker.

7.The future of VoLTE: why it matters for the Redmi 8 Pro

Many people ask, "Is it worth bothering with VoLTE if it works?" The answer is yes, and here's why:

• 📵 Shutdown 3G — Operators around the world are gradually abandoning 3G-Without VoLTE, your Redmi 8 Pro could be without a call in 2-3 years.
• 📡 Transition to 5G — Even if your phone doesn’t support you. 5G, VoLTE is a prerequisite for compatibility with modern networks.
• 🔒 Security – VoLTE calls are more encrypted than normal calls, which reduces the risk of wiretapping.

Xiaomi is also no longer releasing updates to the Redmi 8 Pro (the last official firmware was released in 2022), which means that all communication improvements, including fixes for VoLTE, will not come, so it is important to configure the technology now while it is still supported.

If you plan to use your phone for a few more years, VoLTE will be your lifeline in the age of the dying. 3G-And for those who travel a lot, there's also a cost savings in roaming, because many operators offer free VoLTE calls in other countries.

FAQ: Frequent questions about VoLTE in Xiaomi Redmi 8 Pro