VoLTE on Xiaomi Redmi Note 7: decryption icon, configuration and troubleshooting

If you notice a new VoLTE icon next to the network indicator on the screen of your Xiaomi Redmi Note 7, do not rush to panic - this is not a mistake, but a useful feature. LTE (voice 4G) It's a major change in the quality of phone calls, but many people still don't understand how it works. Why are operators actively adopting VoLTE? How does this technology affect battery life? And most importantly, what do you do if the icon suddenly disappears?

In this article, we’ll go into detail about what’s behind the Redmi Note 7’s VoLTE acronym, how to set it up properly, and what pitfalls smartphone owners can expect, why VoLTE sometimes shuts down on its own, how to test your carrier’s support for the technology, and what alternatives exist to improve connectivity.

Note: Xiaomi Redmi Note 7 (model lavender) officially supports VoLTE, but for the correct operation requires the correct firmware and operator settings. If you have problems with activation - do not rush to blame the smartphone: in 80% of cases, the reason lies in the fact that the device is not a reliable device. SIM-card.

What is VoLTE and why is it needed on the Redmi Note 7?

VoLTE (from Voice over) LTE) — This is a technology for transmitting voice traffic through a fourth generation network (4G). Unlike traditional calls that use legacy networks. 2G/3G, VoLTE provides the:

• 🎤 High quality sound – wide bandwidth allows voice transmission in format HD (up to 22 kHz versus 8 kHz in 3G)
• ⚡ Instant connection – the time of setting the call is reduced by 5-7 second 1-2 seconds
• 📶 Stable signal – calls do not stop when switching between 4G and 3G
• 🔄 Parallel work – you can simultaneously talk and use mobile Internet at full speed

On Xiaomi Redmi Note 7 support for VoLTE implemented at the hardware level thanks to the chip Qualcomm Snapdragon 660, which has a built-in modem X12 LTE voice-over 4G. This means that the problem is not the hardware – if the function is not working, the settings or operator are to blame.

It's important to understand that VoLTE is not a replacement for regular calls, it works in parallel. When you call a subscriber without VoLTE support, the connection automatically switches to the phone. 3G/2G. But if both interlocutors have compatible devices and tariffs, the call will pass through the phone. 4G top-quality.

What does the VoLTE icon look like on the Redmi Note 7 and where to look for it?

On the Xiaomi Redmi Note 7, the VoLTE indicator appears in the top notification bar next to the signal level icon.

1. VoLTE – standard display (white letters on black/color background)
2. HD — The alternative that some operators use instead of VoLTE
3. 4G+ — In rare cases, operators combine VoLTE indicators and carrier aggregations

If the icon suddenly disappears, it doesn't always mean a problem. Here are the normal situations when the indicator goes missing:

• 📵 In the absence of a network 4G (smartphone 3G/2G)
• 🔄 During roaming (not all operators support VoLTE in roaming)
• 📞 When calling a subscriber without VoLTE support (the connection is using the old technology)

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On some firmware MIUI The VoLTE icon can be hidden behind the signal icon. To see it, pull the notification bar down, which displays the advanced status.

If the indicator doesn't appear at all under any circumstances, it's a good idea to check the settings, but first make sure your carrier supports the technology in your area.

How to enable VoLTE on Xiaomi Redmi Note 7: step-by-step instructions

Activation of VoLTE on Redmi Note 7 It takes less than a minute, but it requires a few key steps. SIM-VoLTE-enabled card (usually USIM or nano-SIM new-type).

Now we move on to the settings:

1. Open the Settings. → SIM-maps and mobile networks
2. Choose yours. SIM-card (if there are several)
3. Tap on VoLTE Call (or VoLTE Call in some versions) MIUI)
4. Switch the switch to "On" position.
5. Confirm the action if a reset warning appears

Once activated, the smartphone can automatically restart. If the VoLTE icon does not appear immediately, do not panic: sometimes you need to 5-10 You can check in for a few minutes on the operator's network. Try making a test call to another VoLTE-compatible phone.

If after turning on VoLTE you lost mobile Internet, check the settings APN. Sometimes, VoLTE activation resets the access point configuration, and you can restore it through Settings. → Mobile network → Access points (APN) → Reset to standard.

Why VoLTE may not work on the Redmi Note 7

If you have completed all the settings, but VoLTE is still not activated, the problem may lie in one of the following factors:

• 📱 Outdated firmware – VoLTE requires MIUI 10.3.2 for Redmi Note 7. Check for Settings → The phone. → Updating the system
• 📡 Lack of coverage – not all carrier towers support VoLTE, especially in smaller cities
• 💳 Incompatible SIM — Older cards (released before 2017) often don't support the technology
• 🔧 Settings conflict – some engineering modes (e.g. #4636##) can disable VoLTE
• 🔒 Operator Blocking – VoLTE is sometimes disabled by default on corporate tariffs

There are regional versions on the Redmi Note 7. MIUI, Where VoLTE support may differ:

• 🌍 Global – Full VoLTE support for most operators
• 🇨🇳 China – VoLTE only works with Chinese operators
• 🇪🇺 European (EEA) — Optimized for European networks
• 🇷🇺 Russian (Russia) – the best compatibility with MTS, MegaFon, Beeline

If you use custom firmware (like LineageOS or Pixel Experience), check if VoLTE is enabled in the modem settings. In some builds, this feature needs to be manually activated via the engineering menu.

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On the Redmi Note 7 with Chinese firmware, VoLTE will not work in Russia even if the settings are right. MIUI.

VoLTE vs ViLTE vs VoWiFi: What’s the difference and what’s better

In addition to VoLTE, the Xiaomi Redmi Note 7 can be found other similar technologies.

On Redmi Note 7 technology ViLTE (video calls on the Internet) 4G) It activates automatically with VoLTE if the operator supports this function. To use it, just dial a number and select a video call option in the phone interface. The quality of the video will depend on the speed of your Internet connection.

VoWiFi is a separate feature that is particularly useful in areas with poor mobile network coverage.

1. Go to Settings. → SIM-maps and mobile networks
2. Choose yours. SIM-map
3. Activate the call option over Wi-Fi or Wi-Fi Calling
4. If necessary, confirm the address for emergency services.

Important: VoWiFi requires operator support, a technology that MTS is actively promoting in Russia called "Wi-Fi Calling," and Beeline and MegaFon are also testing the feature, but coverage is limited.

The impact of VoLTE on the autonomy of the Redmi Note 7

One of the most common myths about VoLTE is that it dramatically reduces battery life, and it actually depends on several factors:

• 🔋 Signal quality 4G — with a weak signal, the modem works more intensively, which really increases the consumption
• ⚡ Optimization of the firmware - in the latest versions MIUI VoLTE energy consumption is reduced by 15-20%
• 📞 Call frequency – if you don’t call much, the impact of VoLTE on the battery will be minimal
• 🔄 Background processes – some applications may conflict with a VoLTE modem

Based on the results of tests conducted by Redmi Note users 7 forum 4PDA, activation of VoLTE increases battery consumption in standby mode 3-5%, And during the conversation, 8-12%. However, these figures are offset by the benefits of technology:

• ⏱️ Fast connection saves time (less waiting for setup)
• 🔄 No switching between 4G and 3G, reduces the load on the modem
• 📶 Stable signal reduces the number of repeat connections

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If you notice a significant reduction in running time after turning on VoLTE, try calibrating the battery: completely discharge the phone, then charge to 100% without interruptions, which helps the system to more accurately assess the real charge.

For maximum autonomy when using VoLTE, it is recommended:

1. Disable automatic network search (Settings) → Mobile network → Searching the net → Manually)
2. Activate the energy saving mode for SIM-maps (Settings) → Battery → Energy conservation SIM)
3. Update the radio modem through Settings → The phone. → Updating the system → Three points. → Modem update

Frequent VoLTE issues on Redmi Note 7 and their solutions

Even after setting up VoLTE correctly, Redmi Note 7 users may face a variety of problems, and here are the most common situations and ways to solve them:

⚠️ Note: If you lost your mobile internet after activating VoLTE, do not try to manually edit your settings. APN. This can result in a complete loss of communication. Instead, reset your network settings through Settings. → System system → Resetting settings → Resetting mobile network settings.

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

1. Go to Settings → System → Resetting settings
2. Select Resetting of Mobile Network Settings
3. Confirm the action and restart the phone
4. After restarting, re-activate VoLTE

In extreme cases, you may need to completely reset your settings to the factory.Be sure to back up your data through Settings before this procedure. → The phone. → Backup.

⚠️ Attention: On some firmware MIUI After resetting, you may need to re-activate VoLTE via the engineering menu. To do this, dial ##86583## and select the option "VoLTE Provisioning".

FAQ: Answers to popular questions about VoLTE on Redmi Note 7