Owners of Xiaomi, Redmi and POCO smartphones are often faced with the need to clarify the technical characteristics of their device, especially when it comes to wireless connections. The question of where to look for the Bluetooth version on Android Xiaomi becomes especially relevant when purchasing new wireless headphones, smart watches or fitness bracelets. Modern accessories require support for current protocols to ensure high sound quality and connection stability.
The standard settings panel in the MIUI shell or the new HyperOS, unfortunately, often hides this information from the eyes of the average user. The system only shows the status “On” or “Off”, as well as a list of paired devices, but does not indicate a specific protocol version number. This was done by the interface developers for the sake of minimalism, but for technically savvy users such understatement creates certain inconveniences.
There are several proven ways to get around this limitation and get accurate data about the communication module of your gadget. We'll cover methods from simple visual checks to using the engineering menu and command line. Understanding exactly which data transfer protocol your device supports will help you avoid problems with peripheral compatibility.
Why you need to know the version of the Bluetooth module
Many users ignore technical specifications until problems arise. However, knowing the exact version Bluetooth is critical when choosing accessories. For example, if you buy top-end headphones with aptX HD or LDAC codec, and your smartphone only supports basic SBC, you will not be able to evaluate the sound quality claimed by the manufacturer. The difference in bitrate can be colossal.
In addition, older versions of the protocol, such as 4.0 or 4.2, have limitations in range and power consumption. Devices with Bluetooth 5.0 and higher work more stable, drain less on the smartphone battery and provide a wider range. If you notice constant disconnections or rapid drainage of your phone when using wearable electronics, it is worth checking whether your communication module is outdated.
This knowledge will also be useful when reselling the device. Indicating the exact version of the protocol in the ad increases customer confidence and avoids product returns due to “incompatibility.” The technical data sheet of the device always contains this information, but in practice the phone may be used and the box is lost.
⚠️ Attention: The presence of the Bluetooth logo on the box or in marketing materials does not guarantee support for the latest version. Manufacturers often indicate the presence of a module, but do not specify its revision, which may differ in different delivery regions.
It should also be taken into account that even with a modern module, the software shell MIUI may limit its functionality. Therefore, checking through software is the only way to find out the real picture, and not just the theoretical capabilities of the hardware.
Checking through standard system settings
The first thing that comes to mind for any owner Android-smartphone, is to look at the settings menu. Unfortunately, Xiaomi, like many other manufacturers, does not display this information on the main Bluetooth settings screen. However, in some firmware versions you can find indirect confirmation.
Try going to section Settings → Bluetooth. Click on the gear icon or three dots in the upper right corner to open an additional menu. In some cases, especially on global firmware versions, the MAC address and Bluetooth software version may be displayed there, but this is the exception rather than the rule for current versions HyperOS.
If there is no information in the standard menu, do not despair. There is a more reliable way to access system information through the About Phone menu. This method works on devices and does not require the installation of third-party software.
You need to perform the following sequence of actions:
- 📱 Open the “Settings” application on the main screen.
- ℹ️ Select “About phone” (usually at the very top of the list).
- ⚡ Find the line “MIUI Version” or “Android Version”.
- 🔥 Quickly click on this line 7-10 times in a row until the message “You have become a developer” appears.
- 🔙 Return to the main settings menu and find the “Advanced” or “Advanced” item that appears settings."
After activating developer mode, you will have access to logs and more detailed information, however, the Bluetooth version number itself may still not be clearly displayed there. This step is necessary to prepare the system for deeper diagnostics.
If the “For Developers” item does not appear after seven clicks, try clicking faster or reboot the device and repeat the procedure. On some Redmi models, the counter may reset if you pause too long between clicks.
Using the engineering menu for diagnostics
The engineering menu is a hidden section of the operating system intended for testing equipment by service center employees. On Xiaomi smartphones, entry into it is carried out through a special code in the “Phone” application (dialer). This is one of the fastest ways to access technical information.
Open the calling application and dial the combination ##6484##. If the code is correct for your model, the CIT (Customer Integration Test) menu will open. Here is a long list of tests of various components: the screen, speaker, vibration motor and, of course, wireless modules.
You need to find an item related to Bluetooth in the list (often called simply “Bluetooth” or “BT Test”). When you go to this section, the system can start testing. Some versions of CIT display the chip and protocol version after running the test or in the upper corner of the screen. However, the interface of this menu may differ depending on the processor model (Snapdragon or MediaTek).
⚠️ Attention: Be extremely careful in the engineering menu. Do not run the “Write” or “Erase” tests if you do not understand their purpose. Incorrect actions can lead to reset of sensor calibration or loss of data.
If code ##6484## does not work, try an alternative one, which is more common on devices with MediaTek processors. On pure ##3646633##, which is more common on devices with MediaTek processors. On a clean Android (Android One), the codes may differ or be blocked by the telecom operator.
It is important to understand that the engineering menu shows the “hardware” version of the module. something that is physically soldered on the board, and it is impossible to change it programmatically. If a version below 5.0 is indicated here, then no system updates will make it higher.
☑️ Check in the engineering menu
Third-party applications for determining characteristics
The most reliable and simplest way for the average user is to use specialized applications from the Google Play Store. Utility developers have access to the system API, which allows them to read the full characteristics of the device, hidden from the standard interface.
One of the most popular and time-tested tools is the application AIDA64. It provides comprehensive information about the system. After installation, run the app and wait until the scan is completed. You are interested in the “Bluetooth” or “Network” section.
This section will indicate not only the protocol version (for example, 5.2 or 5.3), but also supported profiles (A2DP, AVRCP, HFP) and codecs. This gives a complete picture of the capabilities of your Xiaomi. Similar functionality is offered by applications CPU-Z and Device Info HW.
The advantage of using software is that it displays information in an understandable form, without the need to decipher technical codes. In addition, these applications are often updated and work correctly on new versions of Android 13 and 14.
Here is a list of recommended applications for checking:
- 📊 AIDA64 — the most detailed report on all components.
- 📱 CPU-Z —a classic for checking the processor and sensors, including BT.
- 🛠️ Device Info HW — great for checking drivers and modules.
- 📡 Bluetooth Scanner - shows not only your module, but also details of surrounding devices.
The use of such snails is safe for the system, they do not require superuser rights (Root) and work in the background without loading the processor.
Are applications for checking the system safe?
Yes, applications like AIDA64 or CPU-Z only read the information provided by the operating system. They do not make changes to settings, do not delete files and do not require access to your personal data (contacts, photos). The only permission they need is access to Bluetooth for scanning if you want to see surrounding devices.
Using ADB commands for advanced users
For those who are not afraid of the command line and want to get the most accurate data directly from the system, there is a method using Android Debug Bridge (ADB). This method requires connecting the smartphone to the computer via a USB cable and having the drivers installed.
You must first enable USB debugging. To do this, go to Settings → About phone and tap on the MIUI version seven times to unlock the developer menu. Then in the “For Developers” menu, turn on the “USB Debugging” toggle switch.
Connect the phone to the PC, open the command line (CMD) or terminal in the folder with ADB and enter the following command:
adb shell dumpsys bluetooth_managerThis command will display a huge log of the manager’s work Bluetooth. The beginning of the output usually indicates the protocol version supported by the controller. Look for lines that contain "Local Version" or "HCI Version".
An alternative command option that may give more structured output on some devices:
adb shell dumpsys bluetooth_manager | grep -i"version"If you can't connect your phone to your computer, there are terminal emulator apps that you can run directly on your smartphone (such as Termux), but they usually require Root privileges to run, which adds complexity process and may violate the warranty.
⚠️ Attention: When working with ADB, be careful when entering commands. Although the dumpsys command is safe and only reads data, accidentally entering other commands can change system settings. If you are not sure of your actions, it is better to use graphical applications from the previous section.
The ADB method is good because it shows “raw” data from the driver, which cannot be faked or hidden by the manufacturer’s shell.
Comparing Bluetooth versions and their impact on operation
Understanding which version is installed on your device, it is useful to understand what exactly this figure means in real operation. The differences between generations of technology can be significant, especially in smart home or audiophile use cases.
Below is a table showing the key differences between popular protocol versions:
| Version | Maximum speed | Range (open space) | Key features |
|---|---|---|---|
| 4.0 / 4.1 | 1 Mbit/s | up to 10 meters | Basic LE (Low Energy), standard for older fitness bracelets |
| 4.2 | 1 Mbit/s | up to 10 meters | Improved data protection, IPv6 support |
| 5.0 | 2 Mbit/s | up to 40 meters | Double speed and range, improved broadcasting |
| 5.2 / 5.3 | 3 Mbit/s+ | up to 200 meters (theor.) | LE Audio, improved energy saving, multi-connectivity |
Owners Xiaomi of the budget segment should know that even if the specifications state Bluetooth 5.0, in cheap models it can operate at the speeds of the previous generation due to savings on the antenna module. This is the so-called “marketing Bluetooth.” Versions 5.2 and 5.3, which are found in the flagship series of recent years, provide the ability to connect two pairs of headphones simultaneously with minimal delay. They are also critical for the operation of the new LC3 audio standards.
Versions 5.2 and 5.3, which are found in the flagships of the series Xiaomi 13/14 And Redmi Note recent years, provide the ability to connect two pairs of headphones simultaneously with minimal delay. They are also critical to the operation of the new LC3 audio standards.
The main advantage of Bluetooth 5.0 and higher is not so much the file transfer speed (which is still limited), but the stability of the connection, energy efficiency and the ability to simultaneously work with multiple devices without losing quality.
Frequently asked questions (FAQ)
Is it possible update the Bluetooth version on Xiaomi through a system update?
No, the Bluetooth version cannot be updated. This is a characteristic of a physical chip soldered into the motherboard. A system update (MIUI/HyperOS) can improve the stability of the module or add support for new codecs, but will not change the protocol version itself (for example, from 4.2 to 5.0).
Why is the version not displayed in the settings, although the phone is new?
MIUI shell hides this information to simplify the interface. The system believes that an ordinary user does not need this data. Use applications like AIDA64 or the engineering menu to see hidden parameters.
Does the Bluetooth version affect file transfer speed?
Yes, it does, but not as much as many people think. Even on Bluetooth 5.3, actual file transfer speeds rarely exceed 2-3 MB/s due to security protocols. To quickly transfer large amounts of data, it is better to use Wi-Fi Direct or a cable.
Do headphones with Bluetooth 5.3 work on a phone with version 4.2?
Yes, Bluetooth technology is fully backward compatible. The headphones will work, but you will not be able to use functions based on new standards (for example, some noise reduction modes or uncompressed audio transmission), and the connection will work using the 4.2 protocol.