Modern smartphone users often notice the appearance of a new icon in the screen status bar - VoLTE. For many, this becomes a cause for concern, since obscure abbreviations are often associated with unnecessary costs or hidden features that you will have to pay for. In fact, this technology is designed to significantly improve the quality of voice communications, making conversations clearer and more natural.
Owners of devices based on Android come across this option everywhere, but not everyone understands why you need it and whether it is possible to do without it. In this article, we will analyze in detail how the technology works, evaluate its impact on traffic consumption and battery power, and also provide step-by-step guide for managing this function on various phone models.
Having understood the details, you can independently make an informed decision: leave the improved sound active or disable the function to save resources in situations. Understanding how fourth-generation communications works will help you more effectively manage the settings of your gadget.
The essence of the technology and the principle of operation
Abbreviation VoLTE stands for Voice over LTE, which literally means “Voice over LTE”. Traditionally, mobile networks worked on a circuit switching principle: when you made a call, the phone switched from fast 4G to the older 2G or 3G standard for voice, since early versions of LTE didn't support voice calls directly. This led to connection delays and reduced sound quality.
VoLTE technology allows you to transmit a voice stream as regular data over a 4G network, without requiring a switch to lower communication standards. The voice is digitized and transmitted in data packets, similar to how instant messengers work, but with priority in the operator’s network. This provides an instant connection and the ability to simultaneously talk and use high-speed Internet.
⚠️ Attention: The function requires support from your telecom operator and the availability of an appropriate SIM card. If the tariff plan is old, you may need to replace it with a current one.
The key advantage is the use of high-resolution codecs that transmit a wider frequency range of human speech. As a result, the other party hears you as if you were in the same room, even if the network signal strength is not ideal. This is especially important in noisy places or when driving.
Before turning off VoLTE, check whether your data plan supports HD calls. For some operators, this option can be activated separately in your personal account.
Advantages and disadvantages of use
The introduction of voice calls through fourth-generation networks has brought users a number of tangible advantages that are difficult to ignore. However, any technology has its own characteristics, which in certain scenarios can be considered as disadvantages. Let's weigh the pros and cons.
Among the main advantages, users highlight:
- 📞 Instant connection: Dialing and beeps begin almost immediately, without the characteristic pause of 2-3 seconds typical of older networks.
- 🎧 HD sound quality: The voice sounds spacious and natural, the effect of the “metallic” timbre characteristic of GSM disappears.
- 🌐 Simultaneous work: You can actively download files or navigate on the map during a call without falling to EDGE speed.
Despite the obvious advantages, there are also nuances. Some users note that in areas of poor 4G reception, the phone may lose the network more often than when operating in 3G mode. There is also a myth about high traffic consumption, although operators usually do not charge VoLTE voice packages as Internet traffic.
The impact on the battery is also a matter of debate. On the one hand, the absence of constant switching between communication standards saves energy. On the other hand, constant operation of the 4G module in standby mode may consume more resources in conditions of a weak signal.
Impact on traffic consumption and battery charge
One of the most common questions that arises among owners of smartphones Xiaomi, Samsung and other brands: does VoLTE “eat up” my Internet traffic? The answer lies in the technical implementation. Although voice is transmitted over data channels, telecom operators allocate a special priority stream (QoS) for this, which is not charged like regular Internet.
Nevertheless, technically data transmission occurs. If you have an unlimited tariff or a large package of minutes, there is nothing to worry about. But if you are roaming or use prepaid tariffs with hourly rates, it is better to check the conditions with your provider. In most cases, additional write-offs are not made within the country.
As for energy consumption, the situation here is ambiguous. In conditions of stable 4G coverage, VoLTE technology is even more economical, since the processor does not need to constantly switch the radio module between 900 MHz and 2100 MHz frequencies. However, in patchy coverage areas where the 4G signal comes and goes, battery consumption may increase due to constant network searches.
| Option | Regular call (2G/3G) | VoLTE call (4G) |
|---|---|---|
| Quality sound | Standard (narrow range) | HD (wide range) |
| Connection speed | 3-5 seconds | Instant (< 1 sec) |
| Internet operation during a call | Only 2G/3G or none | Full 4G/LTE |
| Traffic consumption | Not charged | Usually not charged* |
*Conditions may vary depending on the tariff plan and region.
How to check support for a function on a smartphone
Before you try to set up or disable a function, you should make sure that your device and SIM card are generally capable of supporting it. Modern smartphones released after 2018 in 95% of cases have the necessary software. However, the presence of hardware is only half the battle.
Checking is carried out through the engineering menu or standard settings. In most cases, it is enough to go to the “About phone” section and find information about the status of the SIM card. If it says that the voice network uses LTE, then the feature is active. Also, the indicator VoLTE often lights up in the notification shade.
If the icon does not appear, the function may be hidden in the settings. On some models Huawei or Honor you need to activate the hidden menu by dialing a special code.
Hidden codes for checking status
The code works on some devices ##4636##. In the menu that opens, select “Phone Information” and find the “VoLTE Provisioned” switch. If it is not there, it means that the operator or firmware does not support manual control.
Instructions: how to disable VoLTE on different Android
The process of disabling the function may differ depending on the shell installed by the manufacturer. Interfaces One UI from Samsung, MIUI from Xiaomi and pure Android on Pixel have different menu logic. Below are the universal paths that work on most current versions of the OS.
To disable, follow these steps appropriate for your device:
- 📱 Samsung: Settings → Connections → Mobile networks → Calls via LTE (switch to “Off” or “Data only”).
- 🔴 Xiaomi / Redmi: Settings → SIM cards and mobile networks → Select a SIM card → Use VoLTE (switch the slider).
- 🤖 Pure Android (Pixel, Motorola): Settings → Network and Internet → Mobile network → Preferred network type (select 3G/2G) or a separate VoLTE toggle switch.
If standard methods fail to disable the function, you can use a radical but effective method - change the network type. By switching your smartphone to “3G Only” or “2G/3G” mode, you will automatically disable VoLTE, since this technology works exclusively in fourth generation networks.
☑️ Algorithm for disabling the function
⚠️ Attention: After turning off VoLTE, the quality of calls may deteriorate and the speed Internet connection during a call will drop to 3G. If you often use a navigator or video communication during calls, this is worth considering.
Possible problems and their solutions
Despite the well-functioning technology, users sometimes encounter errors. The most common problem is that the VoLTE icon is there, but calls do not go through or are dropped. This often indicates a conflict between the phone settings and the operator's base station settings.
In such cases, resetting the network settings helps. This action will not delete your personal data (photos, contacts), but will return all connection parameters to factory defaults. The path is usually located in the section Settings → System → Reset settings → Reset Wi-Fi, mobile data and Bluetooth settings.
Another common situation is the disappearance of the icon after updating the firmware. Smartphone manufacturers sometimes remove support for certain frequencies or codecs in new software versions for specific regions. In this case, only waiting for an update from the operator or flashing the device to the global version will help.
If after all the manipulations the connection is not stabilized, remove the SIM card, wipe the contacts and insert it into another slot. Often the problem lies in oxidation of contacts or physical wear of the SIM card.
Comparison with analogues: Wi-Fi Calling and VoWiFi
VoLTE technology is often confused with Wi-Fi Calling (VoWiFi), but these are different things. VoLTE uses cell towers to transmit voice, while Wi-Fi Calling allows you to make calls over a Wi-Fi hotspot using an internet connection. This is especially true in rooms with a poor cellular signal, but good Wi-Fi.
Both technologies can work simultaneously, priority is usually given to the one whose signal is stronger at the moment. If you have both options enabled, the phone itself will choose the optimal path for the connection. Disabling VoLTE does not affect the operation of Wi-Fi Calling, and vice versa.
In dense urban areas, VoLTE is often preferable, since it does not depend on the load on the home Wi-Fi network. However, in underground parking lots or remote country houses, it is Wi-Fi Calling that saves the situation, allowing you to stay connected.
Does disabling VoLTE affect the speed of mobile data?
Disabling VoLTE itself does not change the maximum download speed for files when you are not talking. However, during an incoming or outgoing call, the non-VoLTE phone will switch to 3G and the internet speed will drop. With VoLTE enabled, the speed will remain high (4G/LTE) even during a call.
Is it possible to use VoLTE in roaming?
It depends on the agreements between your operator and foreign partners. In many cases, the VoLTE function in roaming does not work automatically and requires a special option. Without it, the phone will switch to local 2G/3G networks for calls, which may be more expensive.
Why did the VoLTE icon disappear after a reboot?
This can happen if the SIM card was not correctly identified when the system started. Try turning airplane mode on and off. If it doesn’t help, check if there is a restriction in the settings on data use for background processes, since VoLTE requires a constant channel.
Do you need to pay for using VoLTE separately?
In most tariff plans of large operators, the use of VoLTE is included in the base price and is not charged separately. Minutes are consumed from your main package. However, it is recommended to check the current conditions of your tariff, as the rules may change.