Many Xiaomi smartphone users often wonder about the exact specification of their device’s wireless module.This is not idle curiosity, but a necessity when it comes to compatibility with new headphones, fitness trackers or game controllers.The Bluetooth protocol is constantly evolving, and supporting new standards directly affects the sound quality, communication range and power consumption of the gadget.
Unlike information about RAM or CPU model, wireless version data is often hidden from the eyes of the average user in the standard settings menu. MIUI and the new HyperOS provide basic information, but rarely clarify whether you have Bluetooth 5.0, 5.2 or older 4.2. Understanding these differences is critical for those who plan to use the aptX HD or LDAC codec to transmit high-resolution audio.
There are several proven methods of obtaining this information, ranging from simple engineering codes to using the ADB debugging bridge. In this article, we will examine each of the ways in detail, focusing on the nuances specific to the Xiaomi ecosystem.
The importance of Bluetooth versions for Xiaomi users
Before we get to technical verification, it’s important to understand why the module version matters. Each new specification brings not only increased data rate, but also significant changes in the power architecture, for example, switching from Bluetooth 4.x to 5.0 allowed for four times the range and double the transmission speed.
This is especially true for Xiaomi smart device owners, because the Mijia ecosystem is heavily using the BLE (Bluetooth Low Energy) protocol, which was greatly improved in version five, and if you're trying to plug in a temperature sensor or a smart light bulb and they're not on a phone, the problem may be that the protocol versions are not compatible.
- 🎧 Sound quality: New versions support more advanced compression codecs, which is critical for wireless headphones.
- 🔋 Energy Efficiency: Supported Devices BLE 5.x Consume significantly less energy during background synchronization.
- 📡 Connection stability: Improved performance in noisy air, where many Wi-Fi routers work.
It’s worth noting that having a new version of Bluetooth in the processor specifications doesn’t always guarantee full implementation in a smartphone. Xiaomi engineers can restrict the functionality of the radio module software or use cheaper components in the budget lines of Redmi and POCO. So checking the actual version is the only way to find out the truth.
⚠️ Note: Having support for a specific version of Bluetooth in a Qualcomm or MediaTek chip does not mean that the smartphone manufacturer has activated all the features of this version in the firmware.
Use of engineering menus and hidden codes
The fastest way to access technical information on Xiaomi smartphones is to use special codes entered through a standard dialer, which opens access to the CIT (Customer Interface Test) or engineering menu, which displays data on all hardware components of the device.
To run the test, you need to open the Phone app and dial the combination ##6484##. Once you enter the last digit, the testing menu will automatically open. Here you will find the section related to wireless modules, which can be called Bluetooth, Wireless or Version Info depending on the Android version and shell.
The test menu often displays the Host Controller Interface (HCI) version, which is the setting that indicates the real version of the protocol that the chip supports. If you see a value of v10 or higher, this often corresponds to Bluetooth 5.0 and later, but the exact decryption is better checked against the matching table.
Some Xiaomi models may have blocked access to the full engineering menu through a standard dial, in which case the system may simply do nothing or issue an error message, a limitation often found in global firmware versions where access to diagnostic tools is curtailed for security reasons.
What if the code doesn't work?
If the standard code ##6484## doesn’t work, try the alternative ##4636##.It opens the Android testing menu, where you can also find the controller version information in the Bluetooth Info section. In some cases, you need to install the Engineering Menu app from Play Market to activate hidden features.Analyze information through Android settings and ADB If the engineering menu is not available or seems too complicated, you can use standard Android debugging tools. This will require you to turn on the developer mode. Go to Settings → About the phone and quickly press 7 times on the item "Version" MIUI» or "Version" OS». Once the developer mode is activated, a new section will appear in the settings menu, “Developers For,” and look for “Bluetooth Error Journal” or “Bluetooth Error Report” there». However, more accurate data can be obtained through a computer using the utility. ADB (Android Debug Bridge. Connect your smartphone to a PC with drivers and platform tools installed. In the command line, type a command to get Bluetooth stack logs: adb shell dumpsys bluetooth_manager Find the line that starts with the Local Version or HCI Version. The numerical value will point to the version of the specification. 9 Bluetooth 4.2, 10 — Bluetooth 5.0. This method is the most reliable, as data is read directly from the kernel drivers. 💻 Universality: The method works on all Xiaomi smartphones, regardless of the version MIUI. 📝 Detail: Allows you to see not only the version, but also the connection status, device address and profiles used. 🔧 Professionalism: Requires minimal PC training, but gives the result of the level of the engineer of the service center. Third-party applications for system diagnostics For users who do not want to mess with the command line, there are specialized applications from the Google Play Store. They can read system configuration files and display information in a graphical way. One of the most popular and reliable tools is Device Info. HW or AIDA64. Once installed, you need to go to System or Bluetooth, where you will find the chip manufacturer (e.g. Qualcomm, MediaTek, Broadcom) and the version of the standard you are using. Applications often show this information more clearly than dry logs. ADB. It is important to understand that third-party programs read the same system variables as the system. ADB, But they can sometimes be misinterpreted if the device is new and the application databases are not yet updated, so it is recommended to double-check the data through the engineering test menu if the results seem questionable. ⚠️ Warning: Avoid apps with names like Bluetooth Booster or Fixer, which often don’t show the real version of the module, but only change the software settings, which can disrupt the stable operation of the connection. HCI Bluetooth versions of the standards you can find in logs or diagnostic utilities. HCI Bluetooth Standard Version Release Year Key Feature 6 4.0 2010 Implementation BLE (Low Energy) 7 4.1 2013 Simultaneous work with LTE 8 4.2 2014 Increased transmission speed 9 5.0 2016 Increased range and speed 10-12 5.1 - 5.3 2019-2022 Precise positioning and audio 📊 What is the Bluetooth version of your current smartphone? 4.xBluetooth 5.0Bluetooth 5.1 Another way to find out the Bluetooth version is to refer to the official specifications of the processor installed in your Xiaomi. Smartphones rarely use custom radio modules, most often Bluetooth is integrated directly into the SoC (System on Chip). 870 or Dimensity 1200) The "Connectivity" or "Wireless" section always indicates the supported version of Bluetooth. This gives you guaranteed information, because you can't hardware-modify the protocol version in the chip, but you have to keep in mind the nuance of this. If Xiaomi released a phone with a processor that supports Bluetooth 5.2, but installed antennas or software from an older version to make the model cheaper, then the actual work will be limited. This is common in the budget segment, where marketing characteristics may differ from reality. 📱 Flagships: Usually fully meet the specifications of the chipset. 💰 Budget: may have a stripped-down functionality of wireless modules. 🌍 Regional versions: Chinese versions often have more recent drivers than global versions. 💡The CPU specification is the upper limit of capabilities.The actual version of Bluetooth on the device may not be higher than claimed by the chipmaker, but may be lower due to smartphone manufacturer restrictions. Even with Bluetooth, users may have connection problems, often not because of the protocol version, but because of codec or profile conflict, such as trying to connect headphones with aptX Adaptive to a phone that supports only the user's own phone. SBC, It will work in basic mode, regardless of Bluetooth 5.0 or 5.3.It is also worth remembering that some functions, such as dual-audio, require support not only from the phone, but also from accessories. Xiaomi implements this feature software, and it can run unstable on older versions of Android. MIUI If you notice that Bluetooth is getting worse, try resetting your network settings. This won’t delete your data, but will return the configuration of wireless modules to factory parameters, which often resolves software glitches. ⚠️ Attention: Resetting the network will delete all stored Wi-Fi passwords and associated Bluetooth devices. You have to reconnect them. Does the Android version affect Bluetooth? Yes, newer versions of Android contain updated Bluetooth drivers and stacks, which can improve stability and add support for new codecs, even if the hardware remains the same. Can I upgrade the Bluetooth version to Xiaomi? Hardware version is impossible to update. Software support for the new standards can only be obtained through a firmware update from the manufacturer, if the chip is physically capable of doing so. Why can't the phone see Bluetooth 5.3 headphones? Most likely, the headphones are in standby or discharged. Also check if they are connected to another device nearby, as priority may be given to the last active gadget.