Many users of Xiaomi, Redmi or POCO flagship and budget models face a situation where it is necessary to accurately determine the specifications of a wireless module. Often there is a need to understand whether the device supports the modern standard Bluetooth 5.0 or the more advanced 5.2, 5.3 to ensure high-quality audio transmission or stable operation of smart watches. Standard settings of the MIUI or HyperOS interface, unfortunately, often hide this information, leaving the user in the dark about the real capabilities of the hardware.
The problem is that the visual display in the About Phone menu is usually limited to turning the function on or off, without specifying the chip specification. To accurately diagnose, gadget owners have to resort to deeper methods of system analysis. In this article, we will examine all the available methods, from simple applications to professional developer tools that will help you get comprehensive information about the Bluetooth adapter.
Understanding the protocol version is critical when buying new accessories, because it depends on range, data speed and power consumption. If you plan to use high-resolution codecs like aptX HD or LDAC, having a suitable version of the module becomes a prerequisite. Let's look at how to get this data as efficiently and safely as possible for your device.
Why do you need to know the exact version of Bluetooth?
Xiaomi smartphone owners often underestimate the importance of the wireless interface version until they encounter connectivity issues. The difference between the standards can be huge: while Bluetooth 4.2 provides basic data, versions 5.0 and higher offer increased ranges of up to 240 meters in open space and double transmission speeds. This directly affects the stability of wireless headphones in a noisy subway or when working with fitness trackers.
In addition, newer versions of the protocol provide lower power consumption, which is critical for smartphone autonomy. Current MIUI algorithms are optimized to work with new standards, and the presence of an outdated module can lead to faster battery discharge with active use of the periphery.
⚠️ Note: Do not rely solely on the marketing names of models.The smartphone can be called “Pro” or “Ultra”, but equipped with a module of the previous generation depending on the region of release or batch.
The protocol version also defines support for modern audio codecs. If your phone formally supports Bluetooth 5.0, but the chipset does not have LDAC hardware decoding, you will not be able to enjoy Hi-Res audio without loss, so checking the specifications is the first step before buying expensive audio accessories.
Use of specialized applications from Google Play
The easiest and most affordable way for the average user is to install third-party software. There are many utilities in the Google Play store that read system logs and output detailed information about hardware. One of the most reliable tools is the Bluetooth Version Checker app or universal diagnostics kits like AIDA64.
Once installed, programs typically require minimal permissions to access device information, scan the chipset’s IDs and verify them against an internal database, giving you a clear result, which allows you to instantly know which Bluetooth standard your Xiaomi is implementing, without having to connect your phone to your computer.
- 📱 AIDA64: Shows complete system information, including details of wireless modules in the Network or Devices section».
- 🔍 Bluetooth Version Checker: A highly specialized application that focuses only on the protocol version and supported profiles.
- ⚙️ CPU-Z: A popular tool that can also display touch screen and battery information, but Bluetooth data is sometimes hidden depending on the model.
It is important to understand that some applications may show a version of the protocol that the operating system supports, rather than a physical chip. In the case of Android, this is often the same, but there may be discrepancies with custom firmware, so it is recommended to double-check the data through a second source if the information seems suspicious or incomplete.
Why can apps show different data?
Checking through the Xiaomi Engineering Menu
Xiaomi and Redmi have a hidden settings section known as the Engineering Menu, which is designed to test equipment by service centers, but is also available to ordinary users, and provides access to detailed information about radio modules, including Bluetooth and Wi-Fi.
To enter the menu, you need to open the standard "ringer" and enter a special code. Most devices with a MIUI shell work with the combination ##6484#. Once the code is entered, the phone automatically goes to testing mode, where you do not need to press the call button. If the code does not work, your firmware version may block this access, and then you will have to use alternate methods.
You can find a item that's associated with "Bluetooth" or "BT Test" on the list that opens, and you can click on it and take it to a submenu that often displays the firmware version of the Bluetooth chip. Although it may not have a direct "Bluetooth 5.2" label, you can browse the computer's firmware version number online or check it against a compatibility table.
☑️ Checking through the Engineering Menu
Using the engineering menu is safe if you do not change the settings, but only view information. However, be careful not to recalibrate the sensors or change the signal power parameters unnecessarily, as this can lead to unstable communication.
Diagnostics through ADB and computer
The most accurate and professional method of obtaining information is the use of a debugging bridge. ADB (Android Debug Bridge. This method requires connecting the smartphone to the computer via USB-cable and availability of an installed driver ADB. The method allows you to request raw data from the system, which is often hidden from the user interface and even from ordinary applications.
First, activate the developer mode on your Xiaomi. Go to Settings → About Phone and quickly click on MIUI Version seven times (or OS Version). Once the notification “You became a developer” appears, go to Advanced Settings → For developers and enable “Debugging by USB”.
Connect your phone to your PC, open the command prompt or terminal in the ADB folder, and enter a command to check Bluetooth properties. The key here is ro.bluetooth.version or log information.
adb shell getprop | grep bluetoothThis command will list all the properties associated with bluetooth. Look for lines that contain either a version or a chip. You can also use a deeper command to view the kernel logs, which indicates the exact model of the chip and its capabilities when you start the system.
adb shell logcat -b all -d | grep -i"bluetooth init"The result of the execution of the command will show the initialization of the module. If you see a string like "Bluetooth init finished" with the indication of the chipset (for example, Qualcomm or MediaTek), you can determine its generation from the documentation of the processor manufacturer.
⚠️ Attention: For work ADB The correct drivers must be installed on the computer ADB Without them, the computer won't see the phone in debugging mode.
Analysis of the characteristics of the processor and chipset
It is often easier to know the Bluetooth version by identifying the model of the processor (SoC) installed in your Xiaomi. In modern smartphones, the wireless module is most often integrated directly into the chipset or rigidly tied to it. Knowing the model of the processor, you can say with 100% guarantee what communication standard the device supports.
For example, Snapdragon 8 Gen 1 and later processors are always equipped with Bluetooth 5.2 or 5.3. Budget Helio chips or older Snapdragon 4xxx can be limited to version 4.2 or 5.0. This information is public and available on the official websites of chipmakers Qualcomm, MediaTek or Samsung.
| Processor model (SoC) | Typical version of Bluetooth | Examples of Xiaomi smartphones |
|---|---|---|
| Snapdragon 8 Gen 2 / 3 | 5.3 / 5.4 | Xiaomi 13, 14, POCO F5 |
| Snapdragon 778G / 7+ Gen 2 | 5.2 | Xiaomi 11 Lite, POCO X5 |
| Dimensity 1200 / 1300 | 5.2 | Xiaomi 11T, Redmi Note 10 Pro+ |
| Snapdragon 678 / 680 | 5.0 | Redmi Note 10, POCO M3 |
| Helio G85 / G88 | 5.0 (often 4.2 in implementation) | Redmi 10, Note 11 4G |
Using this table, you can indirectly but very accurately determine the capabilities of your device, just find out the processor model in Settings → About the phone, which is especially useful if you don't have a computer to connect the ADB.
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If you can’t find the CPU model in the settings, type the phone model name (e.g., M2102J20SG) into a search engine with a “specs” or “features” and the GSMArena site will show the exact chipset.
The impact of the MIUI firmware version on the operation of the module
It's worth noting that software also plays a role. Sometimes Xiaomi releases MIUI or HyperOS updates that improve connection stability or add support for new codecs, even if the hardware remains the same. However, the physical version of Bluetooth (4.x or 5.x) cannot be software-updated - this is a characteristic of the chip.
Users often confuse the driver version with the standard version. System updates can fix bugs that caused the phone to fall off the headphones, creating the illusion of improving the protocol version. Always check the build number in the settings to make sure you have an up-to-date version of the software optimized for your region.
In some cases, installing global firmware on the Chinese version of the device (or vice versa) can cause communication modules to malfunction due to differences in frequency bands and certificates. If you notice a signal deterioration after flashing, it makes sense to return to the stock version for your region.
Can I update Bluetooth through a system update?
Why does the phone see the device but not connect?
Does the case affect Bluetooth?
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The physical version of Bluetooth cannot be changed software, but the stability of the work depends on the relevance of the firmware. MIUI/HyperOS and driver quality.