Modern Xiaomi, Redmi and POCO smartphones offer many features to improve communication quality, among which VoLTE technology occupies one of the key places. Many users notice the appearance of an HD or VoLTE icon in the status bar and do not always understand why it is needed and whether it can be removed. This technology allows voice data to be transmitted over fourth-generation networks, providing crystal clear sound and simultaneous access to the Internet during a conversation.
However, there are times when the feature is not working properly, quickly lands the battery or just annoys with its presence in the interface. Device owners often look for ways to forcefully deactivate this option or hide the indicator if the operator imposes a service. In this article, we will discuss in detail what lies behind the acronym, why it can interfere and how to correctly manage the settings of voice calls in the shell of MIUI and HyperOS.
What is VoLTE Technology and Why is it Needed?
VoLTE (Voice over LTE) is a standard for voice traffic transmission over 4G LTE networks, which replaced outdated 2G and 3G technologies. Previously, when calling or calling out, the smartphone was forced to switch to 3G or 2G mode, which took several seconds and interrupted high-speed Internet. With the introduction of VoLTE, the phone remains on the 4G network, which allows you to simultaneously talk and use mobile Internet without losing speed.
The main advantage of the technology is the high quality of sound, which is often labeled as HD Voice. The voice of the interlocutor is transmitted in a wider frequency range, which makes speech natural and legible, even if you are in an unstable reception zone.
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Use VoLTE in places with weak 3G signal but stable 4G – this often improves the audibility of the interlocutor.
To work the function requires support from three components: the smartphone itself, SIM-If there's no link in the chain, the icon won't appear, and calls will be made using old protocols. Operators are adopting this technology everywhere, because it allows more efficient use of the network's frequency resource.
Why you should remove or disable VoLTE on Xiaomi
Despite the obvious advantages, there are scenarios where users prefer to turn off VoLTE. One common problem is increased battery consumption. Constantly holding a connection in 4G mode for voice calls can consume more power, especially in areas where the LTE signal is unstable and the phone is constantly looking for a base station.
Another reason is an intrusive status bar icon, and in some MIUI firmware, an HD or VoLTE indicator takes up useful space or just visually contaminates the interface, and sometimes users experience technical failures: during a conversation, the person does not hear you, or calls are reset immediately after dialing.
⚠️ Warning: Forced shutdown of VoLTE via engineering menus can result in uncoated areas 3G Your phone will stop receiving and making calls because the network is not connected. 2G In many regions, they are already shut down.
There are also instances of incompatibility between the operator’s equipment and the smartphone modem, which causes sound artifacts or echoes, and if you notice that the quality of communication has deteriorated since the system upgrade, perhaps the problem lies in the implementation of the VoLTE protocol in the new version of the software.
Standard ways to disconnect through phone settings
The safest and easiest method of managing the function is using the standard Android interface. Xiaomi smartphone manufacturers usually give the user full control over this option, unless the operator has blocked the ability to change the settings at the firmware level.
You have to go to the settings menu of the device, and the path may vary slightly depending on the version of the shell, but the logic remains the same. You have to find the partition that's responsible for the work. SIM-This is where the main switches that control the type of network and the additional services are located.
- 📱 Open Settings and select a paragraph SIM-maps and mobile networks.
- 📡 Click on your operator name or Use item SIM-Default card for selecting an active card.
- 🔘 Find the Use VoLTE or VoLTE calls switch and put it in an inactive state.
If the HD icon is gone after switching off and only the 4G or LTE symbol is left in the status bar, the manipulation has been successful, however, in some cases, especially for virtual network operators (MVNOs) or with specific region settings, this switch may be missing or inactive (dark).
☑️ Pre-switch check
Hiding the VoLTE icon without disabling the function
Often, users are not so much interested in technically disabling the protocol as in removing the annoying icon from the status bar, in which case the VoLTE function itself can be kept active to improve the quality of communication, but visually hide its indicator, which is especially true for those who appreciate minimalist interface.
Modern versions of MIUI 13/14 and HyperOS have a separate option to manage icon display, which is located in the notification and status bar settings section, and if your region or operator allows, you can simply hide the symbol, leaving the technology running in the background.
Algorithm for hiding the icon:
- Go to Settings → Notifications and Status bar.
- Select the item Display icons SIM-card or status line.
- Find the Show VoLTE icon switch and turn it off.
It's important to understand that this option is not available in all regions, and if you don't find one, it may be hidden depending on the country you choose in your settings, and changing the region to India or Indonesia will sometimes unlock additional menu items related to telecom functions.
⚠️ Warning: Changing your phone’s settings may affect some Xiaomi system apps and ad services, so do it consciously.
Use of the Engineering Menu for Advanced Users
If standard settings fail, you can turn to a hidden engineering menu, which is a powerful tool for diagnosing and deep-tuning the modem, but it requires caution. Changing the parameters of the radio module can lead to temporary loss of communication or unstable operation of the device.
To enter the engineering menu on most Xiaomi smartphones, a special code is used in the Phone application. After dialing the combination, a list of test modes will open. We are interested in the section related to the settings. SIM-maps and network modes.
Call: ##4636##Once you enter the code, the Testing menu will automatically open. Select Phone Information. Scroll down to Set Preferred Network Type. Here you can try selecting a mode that does not support VoLTE, such as LTE Only (although this will disable incoming calls without VoLTE) or WCDMA Preferred (forced 3G).
The dangers of LTE Only mode
A safer option on the engineering menu is to search for the VoLTE Provisioned flag, and if you uncheck that box, the phone will stop registering as a device that supports the system. HD-However, after the reboot, the settings can be reset if the operator imposes them remotely.
Comparison of VoLTE management methods
To make it easier for you to choose the right method, we have prepared a comparative table of methods, each of which has its own advantages and risks that must be considered before making changes to the system.
| Method | Difficulty | The risk of communication loss | Efficiency |
|---|---|---|---|
| MIUI settings | Low. | No. | Tall. |
| Hiding the badge | Low. | No. | Visually |
| Engineering menu | Tall. | Medium. | Complete. |
| Change of region | Medium | No. | Depends on the country. |
As you can see from the table, for most users, the best solution is to use standard settings. The engineering menu should be used only in extreme cases when other methods do not work, and the problem requires immediate solution.
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The safest way is to disconnect through the standard menu. SIM-Use the engineering menu only if you understand the consequences of your actions.
Frequent problems and ways to solve them
Even after successful setup, users may encounter network nuances, such as a VoLTE icon that may disappear in roaming or switching between the two. SIM-This is normal behavior if the second SIM card is occupied by a communication channel or the operator does not have an agreement to roam voice in the SIM card. 4G.
Sometimes after updating the system settings are lost and the function is turned on again, in this case, it makes sense to check whether the option “Improving Call Quality” has been activated in the sound settings. HD-call-up.
If you have completely disabled the function but the HD icon is still there, try the following:
- 🔄 Reboot the device to reset the registration in the operator’s network.
- ✈️ Turn on and off the Reim flight to reconnect to the base station.
- 💾 Reset your network settings through the Advanced Settings menu → Recovery and discharge.
⚠️ Note: Resetting network settings will remove saved Wi-Fi passwords and Bluetooth pairs, so write down the required data in advance.
In rare cases, the problem lies in the SIM-If it's very old and doesn't meet the standards. USIM, networking 4G Replacing a SIM card in the operator's cabin with a new one often solves issues with incorrect display of network status.
Why does VoLTE not work on two SIMs at the same time?
The impact of VoLTE on battery and autonomy
The power consumption issue remains one of the most talked-about issues. In theory, VoLTE should save power, because the phone doesn't have to jump between 4G and 3G standards all the time. But in practice, it depends on the quality of the coverage. In a zone where 4G is received with confidence, the difference is not noticeable, but at the edge of the coverage area, the communication module starts to work harder, which can speed up the discharge.
If you notice your phone is warming or running out of power in standby mode, try temporarily disabling the feature.Do a test throughout the day: compare screen and standby time with VoLTE on and off. This will help you make the final decision for your specific use case.
For maximum autonomy in low signal conditions, experts recommend temporarily switching the network type to 3G mode, preferably, which will reduce Internet speed, but save battery power and provide stable voice communication where 4G is no longer catching.