Smartphone users Xiaomi often face the need to find out the exact version Bluetoothinstalled in their device. This knowledge is critical when purchasing wireless headphones, game controllers or smart watches, since the compatibility and quality of codecs directly depend on the protocol version. For example, to transmit high-quality audio LDAC or aptX HD, a module of at least a certain specification is required.
Unfortunately, in the standard settings menu MIUI or HyperOS this information is often hidden from the eyes of the average user. The system only shows the “Enabled” status or a list of paired devices, without revealing the technical details of the radio module. However, there are several proven ways to get around this limitation and get comprehensive data about the hardware of your smartphone.
In this guide, we will look at both software and hardware methods for determining the protocol version. We will look at built-in diagnostic tools, third-party utilities from Google Play, as well as advanced methods using debugging from ADB. Each of these approaches has its advantages depending on the availability of root access and the level of your technical training.
Checking through the engineering menu and system logs
The fastest way to access hidden technical information on devices Xiaomi —using the engineering menu. This interface is intended for testing hardware components and contains detailed data about radio modules. To enter, you usually use a combination of codes in the Phone application, but on new versions, access may be limited. Try entering the code in the dialer. If the menu opens, go to the Android access may be limited.
Try entering the code ##6484## or ##4636## in the dialer. If the menu opens, go to the section Phone Information or Bluetooth Testsection. The chipset version and supported profiles are often displayed here. If the code does not work, this means that the manufacturer has blocked access to the engineering settings in your firmware.
An alternative method is to view the system logs. In some cases, when Bluetooth is turned on, the system writes information about the protocol version to a log file. You can use applications like Logcat Readerby filtering messages by tag Bluetooth or BtStack. This requires care as the volume of data can be enormous.
⚠️ Attention: Be extremely careful when changing settings in the engineering menu. Accidental activation of test modes can lead to unstable network operation or resetting the radio module settings.
What to do if the engineering menu does not open?
On smartphones with Android 10 and higher, access to codes is often closed. Try installing the "Engineering Mode" application from the application store, which creates a shortcut to hidden menus, or use the ADB method described below.
Using third-party diagnostic applications
The most convenient solution for most users is to install specialized utilities from the store Google Play. These applications scan system files and driver databases to extract information about the adapter's capabilities. They do not require root access and work automatically. Bluetooth-adapter. They do not require root access and work automatically.
One of the most popular solutions is an application Bluetooth Version Checker or similar tools from developers like Phoninfo. Once launched, the app analyzes the file build.prop and system libraries, displaying the specification version (for example, 5.0, 5.2 or 5.3). Some utilities also show support for specific codecs, such as aptX or LDAC.
It is important to understand that third-party applications read data written to the system when configured. If the firmware has been changed or updated with errors, the information displayed may not correspond to the actual capabilities of the hardware. In such cases, it is recommended to check the data with the official characteristics of the model on the manufacturer's website.
- 📱 Phone Info SAM: A powerful tool that shows detailed information about sensors and radio modules.
- 🔍 Device Info HW: Provides an in-depth analysis of hardware, including the version of the Bluetooth stack.
- 🛠️ CPU-Z: Although processor-oriented, it often displays data about wireless interfaces in the tab “System.”
Before installing diagnostic applications, check the permissions they ask for. To work, they usually need access to information about the device, but access to contacts or SMS is not required.
Detecting the version through debugging via ADB
For advanced users who do not trust third-party applications, there is a method of checking through a computer and a utility ADB (Android Debug Bridge). This method allows you to request direct information from the system about the properties of Bluetooth without installing additional software on the smartphone itself. You will need a PC, a USB cable and USB debugging enabled.
First activate developer mode on your Xiaomi. To do this, go to Settings → About phone and quickly click 7 times on the item MIUI version or OS version. Then in the menu Advanced settings → For developers turn on the toggle switch USB debugging.
Connect your phone to your computer and open a command prompt or terminal in the folder with ADB installed. Enter the following command to obtain Bluetooth-related system properties:
adb shell getprop | grep bluetoothIn the resulting list, look for lines containing version or feature. Often the protocol version is hardcoded in a property ro.bluetooth.version or similar, depending on the chipset manufacturer (Qualcomm, MediaTek). If the direct version property is not found, you can analyze the output of the command adb shell dumpsys bluetooth_manager, where the specification version is often indicated at the beginning of the log.
☑️ Preparing for verification via ADB
Analysis of codec support as a version indicator
Sometimes the exact version number (for example, 5.1 or 5.2) is difficult to find out, but you can determine the capabilities of the module from the list of supported audio codecs. Versions Bluetooth evolved along with audio compression technologies, so the presence of certain codecs serves as a reliable indicator of the generation of the adapter.
Go to Settings → Bluetooth, click on the gear next to the connected headphones (if any) or use applications like Bluetooth Codec Changer (root required) or Developer Options. In the developers menu, in the section Bluetooth audio codec, you will see a list of available options.
Availability of codec LDAC usually indicates a version no lower 5.0 because this technology requires high bandwidth. Support aptX Adaptive is often found in devices with Bluetooth 5.2 and later. If the list contains only basic codecs SBC and AAC, most likely, the device has an old generation or budget segment module installed.
| Bluetooth version | Typical codecs | Maximum speed | Features |
|---|---|---|---|
| 4.2 | SBC, AAC | 1 Mbit/s | Basic LE support |
| 5.0 | SBC, AAC, aptX, LDAC | 2 Mbit/s | Extended range |
| 5.2 | LC3, aptX Adaptive | 3 Mbit/s | LE Audio, improved sound |
| 5.3/5.4 | All of the above | High stability | Anti-interference, low power consumption |
The absence of advanced codecs in the menu does not always mean an old version of Bluetooth - sometimes support is limited in software by the smartphone manufacturer.
Dependency on the processor model and year of manufacture
The Bluetooth version in smartphones Xiaomi is strictly tied to the installed processor (SoC). Engineers cannot arbitrarily update the protocol version in software unless it is supported by the physical radio module inside the chip. Therefore, knowing the processor model often gives a more accurate answer than attempting software diagnostics.
For example, smartphones based on processors Qualcomm Snapdragon 7 and 8 series of the last three years are almost guaranteed to have Bluetooth 5.2 or higher. Budget models of the MediaTek Helio or older Snapdragon 6 series are often equipped with modules of version 5.0 or even 4.2. You can find out the processor model through the app CPU-Z or in the phone settings.
It is also worth considering the year of manufacture of the device. Smartphones released before 2018 were rarely equipped with Bluetooth 5.0. Devices from 2020-2021 were massively switching to the 5.1-5.2 standard, and flagships from 2023-2026 are already equipped with 5.3 and 5.4 modules. By comparing the announcement date of your model Redmi or POCO with the technical progress of the industry, you can predict the protocol version with high accuracy.
⚠️ Attention: Updating the MIUI firmware cannot upgrade the Bluetooth version if the hardware does not allow it. Do not believe promises in the description of updates about “improving Bluetooth” if the introduction of new codecs is not indicated.
The influence of regional firmware on data display
Users of global firmware versions Global ROM and Chinese versions China ROM may encounter differences in the display of technical information. In Chinese firmware, engineering menus are often more open, and system logs contain more details, which makes it easier to diagnose the version. Bluetooth.
In global firmware, adapted to the requirements of European regulators and Google policies, some technical data may be intentionally hidden or replaced with general wording. This does not mean that the Bluetooth version is lower, just that the interface does not show this figure. When flashing from Global to China (and vice versa), the physical version of the module does not change, only the way it is displayed changes.
If you use custom firmware (for example, Xiaomi.eu), the situation may be ambiguous. Developers of custom builds sometimes modify configuration files, which can lead to incorrect display of the version in third-party applications. In this case, the most reliable method remains checking by processor model or using ADB.
Is it possible to update the Bluetooth version on Xiaomi?
No, the Bluetooth version is determined by the hardware chip and cannot be changed by software. System updates can only add support for new codecs or fix connection errors, but not increase the protocol version number (for example, from 5.0 to 5.2).
Why do applications show different versions of Bluetooth?
Different applications use different methods for reading data: some read the build.prop file, others query the driver via the API, and others analyze the logs. If the system has a version conflict or a bug in the firmware, the readings may differ. Trust the data from the engineering menu or ADB.
Does the Bluetooth version affect the Internet speed?
No, Bluetooth is used to transfer data over short distances (headphones, watches, files). mobile data speed depends on the LTE/5G module and cellular communication standards, which are independent components in a smartphone.
How to check Bluetooth 5.0 support without apps?
Look at the official specification of your model on the Xiaomi website or in the phone box. You can also find a review of your device on a reputable technical portal, where the Bluetooth version is always indicated in the “Communications” section.
Do headphones work with a newer version of Bluetooth on an older phone?
Yes, the Bluetooth standard is backwards compatible. Headphones with Bluetooth 5.3 will work on a phone with version 4.2, but you will not be able to take advantage of the benefits of the new version, such as increased range, multiple connections or new audio codecs.