VoLTE on Xiaomi Redmi 7A: A complete guide to setting up voice calls through 4G

Introduction: Why do you need VoLTE on a budget smartphone?

If you own Xiaomi Redmi, 7A And they noticed that when you talk on the phone, the Internet suddenly disappears or the quality of the connection is poor, and the problem may be that VoLTE is not supported, and this technology, despite its prevalence, still raises questions among budget smartphone users. This is especially true for Redmi. 7A, It was released in 2019, when operators were just beginning to massively introduce voice calls through the Internet. 4G.

VoLTE (Voice over LTE) — It is a fourth-generation voice transmission standard that replaces legacy technologies. 2G/3G. The main advantage is that you can talk and use mobile Internet at the same time at maximum speed, without a connection break. 7A This is especially important, since the smartphone was originally positioned as a device for basic tasks, where every little thing affects the usability.

In this article, we will discuss:

• 🔍 What is VoLTE and why is it important for Redmi? 7A 2026
• 📱 Does your smartphone support technology (and how to check it)
• ⚙️ Step-by-step instructions for turning on VoLTE, taking into account the features MIUI
• 🚨 Typical problems and their solutions (from the lack of option in the menu to registration errors)

What is VoLTE and how does it work for Xiaomi Redmi? 7A?

VoLTE (Voice over LTE) — It is a technology for transmitting voice traffic through networks. 4G, Unlike traditional challenges that are used 2G or 3G. For Redmi. 7A means:

• ⚡ Fast connection: calls are set almost instantly (in 1-2 seconds instead of 5-10).
• 📶 Stable signal: fewer cliffs, especially in areas with poor surface 2G/3G.
• 🌐 Internet during a conversation: you can simultaneously talk and use messengers or a browser.
• 🔊 Better sound quality: technology HD Voice provides clearer voice transmission (with operator support).

But there is a caveat: Redmi 7A It is equipped with Qualcomm Snapdragon 439 chipset, which supports VoLTE at the hardware level, but the implementation depends on two factors:

1. Firmware MIUI (In older versions, the option could have been hidden).
2. Support of the technology by your mobile operator (not all Russian providers provide VoLTE for all tariffs).

⚠️ Attention: If your Redmi is 7A purchased outside of Russia (e.g. global version) M1903C3GG), Check compatibility with local frequencies 4G. Some carriers (e.g. Tele2) may not support VoLTE on imported devices.

How to check if your Xiaomi Redmi supports 7A VoLTE?

Before you set up the technology, make sure your smartphone and SIM-The card supports it. Here are 3 ways to check it:

1. Verification through settings MIUI

Go to: Settings → SIM-maps and mobile networks → [choose SIM] → Enable VoLTE

If you have an option, your Redmi. 7A If there is no item, try updating the firmware (more on this below).

Verification IMEI compatible

Find out. IMEI Your device (*#06#) and check it on sites like IMEI.info. The specifications should include the line VoLTE supported: Yes.

3. Verification through the engineering menu

Enter the dialer: ##4636###

Select Phone Information and see VoLTE provisioned. If Yes status is supported.

Step-by-step: how to turn on VoLTE on Xiaomi Redmi 7A

If your smartphone supports technology, follow this instruction. Importantly, make sure that before setting up:

• 📶 SIM-card 4G (VoLTE doesn't work with 2G/3G).
• 🔄 The latest version is installed on the smartphone MIUI (Update to Settings → The phone. → Updating the system).
• 🌍 You're in the coverage area. 4G your operator.

Check the version. MIUI (must be at least 11.0.2)

Make sure that SIM-map activated for 4G (Call the operator in case of doubt)

Connect to Wi-Fi to download updates (if required)

Restart your phone before setting up-->

Method 1: Standard Enablement through Settings

1. Open Settings. → SIM-maps and mobile networks.

2. Choose yours. SIM-card (if two of them).

3. Find the item Enable VoLTE and move the slider to the right.

4. Reboot the phone.

After switching on next to the network indicator, the inscription VoLTE or HD.

Method 2: Enable through the Engineering Menu (if not in the settings)

1. Enter in the dialer: ##4636##

2. Go to Phone Information.

3. Find the Set preferred network type and select LTE only LTE/WCDMA/GSM auto.

4. Go back and enable VoLTE provisioned (if any).

5. Reset the device.

💡

If after turning on VoLTE mobile Internet disappears, try to manually select a network. 4G customized SIM-maps (Network type) → Only LTE).

Method 3: Update firmware to appear as VoLTE option

If you're in your version MIUI No VoLTE, update the firmware:

1. Go to Settings → About the phone → System update.
2. Click on the three dots in the upper right corner and select Download the latest version.
3. After the update, check for the VoLTE option in the settings SIM-map.

⚠️ Note: On some versions MIUI for Redmi 7A (VoLTE option may be called Enhanced 4G LTE mode or HD Calling. Not to be confused with VoWiFi (calls over Wi-Fi) is a different technology.

Typical problems with VoLTE on Xiaomi Redmi 7A and their decisions

Even if you've turned on VoLTE correctly, it can be difficult.

1. VoLTE option is not available in the settings

Reasons:

• 📱 An outdated version MIUI (firmware update).
• 🌍 Regional restrictions (e.g., a smartphone for India does not support VoLTE in Russia).
• 🔧 The operator does not provide a service for your tariff.

Solution: Update MIUI until the latest version or contact the operator for further support.

2. VoLTE is turned on but not working (no indicator) HD/VoLTE)

Reasons:

• 📡 Poor coverage 4G in your region.
• 🔄 SIM-Card not activated for VoLTE (replacement required) USIM).
• ⚙️ Conflict with settings APN.

Decision:

1. Check the cover. 4G operator's website.
2. Contact the Salon for a replacement SIM on USIM (If the card is older than 2018).
3. Reset the settings. APN: Settings → SIM-map → [yours SIM] → Access points (APN) → Reset to factory.

3. The Internet disappears during a conversation

This means that VoLTE is not activated and the smartphone switches to the 2G/3G - The solutions:

• 🔄 Switch the network type to Only LTE customized SIM-map.
• 📞 Call me back if the indicator is 4G It is not lost, VoLTE is working.
• 🔧 Reset network settings: Settings → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.

💡

If after all the manipulations, VoLTE does not work, the problem may be on the operator's side.

VoLTE vs VoWiFi: What’s the difference and what’s best for Redmi 7A?

Besides VoLTE, at Redmi. 7A VoWiFi (Voice over Wi-Fi) -- calls over wireless networks -- can be available:

For Redmi. 7A VoLTE is preferred because:

• 📶 It does not depend on the availability of Wi-Fi.
• 🔋 Saves battery life (does not require constant Wi-Fi search).
• 🌍 It works wherever there is coverage. 4G.

VoWiFi can come in handy if you have a weak mobile signal but stable Wi-Fi. To enable VoWiFi (if supported):

Settings → SIM-maps and mobile networks → [yours SIM] → Enable VoWiFi

How to turn off VoLTE on Xiaomi Redmi 7A (And why might it be necessary)?

While VoLTE is useful, there are situations where it is worth turning it off:

• 🔋 Battery savings: in VoLTE mode module 4G It is more active, which can reduce battery life by 5-10%.
• 📡 Poor coverage 4G: If the signal is unstable, the calls will be interrupted more often than in the 2G/3G.
• 🔧 Conflict with other features: rare, but VoLTE may interfere with mobile Internet or GPS.

To disable VoLTE:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Turn off the VoLTE slider.
4. Reboot the phone.

⚠️ Warning: After VoLTE is turned off during conversations, mobile internet will shut down (like in older phones).If you need to talk and use the network at the same time, turn VoLTE back on or use Wi-Fi for the Internet.

FAQ: Frequent questions about VoLTE on Xiaomi Redmi 7A