How to know exactly the Bluetooth version on Xiaomi phone: from MIUI 12 to HyperOS

Why it’s important to know the Bluetooth version on Xiaomi and where it’s going to come in handy

Have you ever tried to connect wireless headphones, fitness bracelets or smart watches to Xiaomi, but faced with problems synchronizing? The reason may lie in the incompatibility of Bluetooth versions. New gadgets often require Bluetooth 5.0 and higher, whereas budget models Redmi or old flagship Mi can only support 4.2. Knowing the exact version of the module will help avoid errors when buying accessories and optimize the operation of existing devices.

Another critical situation is the transfer of files between devices. The speed of data exchange between smartphones depends on the protocol: Bluetooth 5.2 transmits data 2 times faster than 4.0, while consuming less energy. If your POCO X3 suddenly became slowly synchronized with a laptop, the first thing to do is check whether the outdated module has become a bottleneck.

Finally, firmware updates sometimes bring improvements to the Bluetooth stack. For example, MIUI 14 for Xiaomi 12T added support for LE Audio, but only on Bluetooth 5.2+ devices. Without knowing the current version, you will not be able to assess whether new features should be expected after the software upgrade.

Method 1: Checking with standard MIUI/HyperOS settings

The fastest method is to use the built-in tools of the system. It works on all Xiaomi, Redmi and POCO smartphones regardless of the shell version (from MIUI 10 to HyperOS).

1. Open the Settings app** (cog icon).
2. Go to About Phone (Device Information may be called in HyperOS).

⚠️ Note: Some models (e.g. Redmi Note 10 Pro) may display the version incorrectly – instead of 5.1, you will see Bluetooth without numbers.

Try another way (see below)|Reboot phone |Update MIUI/HyperOS to the latest version |Check developer settings (section 3)

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If you have HyperOS, the path may be slightly different:

Settings → The phone. → Version. MIUI → Stick 7 times on "Version" MIUI" → Go back. → Additionally. → Specifications of equipment

Method 2: Use of the Engineering Menu (MTK and Qualcomm)

For advanced users, there is a method through hidden engineering menus, and it's suitable for devices running MediaTek chips (Helio, Dimensity series) and Qualcomm Snapdragon. Careful: don't change the settings in these menus unless you're sure about their purpose!

For MediaTek (most Redmi and budget POCO):

1. Open the Phone app and enter the code: ##4636###

For Qualcomm Snapdragon (Flagships Xiaomi, POCO F-series):

1. Enter the phone app: ##2254##
2. The Bluetooth Test Mode menu will open.
3. At the top of the screen, the protocol version (e.g., BT 5.2) will be indicated.

⚠️ Note: On some devices (e.g. Xiaomi 13 Ultra), the engineering menu may require root rights or developer mode enabled. Don’t try root access for this check – the risk of blocking the bootloader is too high.

Method 3: Diagnostic applications (AIDA64, CPU-Z, DevCheck)

If standard methods don't work, third-party utilities will come to the rescue, not only showing the Bluetooth version, but also providing complete information about your Xiaomi hardware.-3 applications:

Recommendation: Use AIDA64 for the most accurate results.

1. Launch the application and wait for the scan (5-10 seconds).
2. Go to Systems.
3. Select Bluetooth, and there will be Version.

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If the app shows Bluetooth 4.0 but you are sure your model should have a nova, check the shell. Some firmware (e.g. MIUI Global Stable for Redmi Note 8 Pro) shows the version incorrectly due to manufacturer restrictions.

Method 4: Checking the phone model on the official website

If software methods are not clear, you can always specify the specifications on official resources, which is suitable for new devices (released after 2020) and guarantees 100% accuracy.

Instructions:

1. Go to Mi.com (global version) or Xiaomi.com (Chinese model).
2. In the search box, type in the full name of your model (e.g. Xiaomi 12 Pro 5G).
3. On the device page, open the Specifications tab (or Technical Specifications).
4. Find the “Wireless Networks” or “Connectivity” section, and the Bluetooth version will be listed there.

⚠️ Be careful with Chinese versions of smartphones (e.g. Redmi) K50 The global site may include a version for international firmware, whereas the Chinese version may be (CN ROM) Other modules are sometimes used.

Alternative sources:

• 📱 GSMArena – The exact version is always listed in the Comms section.
• 🛒 Official stores (for example, AliExpress, Amazon) - in the description of the product.
• 📄 Documentation in a box – if the original packaging is kept.

Using phone settings |Engineering menu |Third-party apps (AIDA64)|Official Xiaomi|Other option

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Method 5: Analysis of the chipset and technical documentation

For those who like to dig deeper, there's a method of determining the Bluetooth version through a processor model. Every chipset (like the Snapdragon 8 Gen 2 or Dimensity 9000) has a fixed version of the Bluetooth module. Knowing your CPU, you can know exactly what protocol you support.

How to find a chipset model:

1. Open AIDA64 (or other diagnostic application)
2. Go to the CPU or SoC section.
3. Remember the name of the chipset (e.g., Qualcomm SM8450 is Snapdragon 8 Gen 1).

Check the compatibility table:

⚠️ Note: In budget models (e.g. Redmi) A2 Helio G36) You can see version 5.0, but the device only supports 4.2 because of firmware limitations.

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If your Xiaomi is released before 2019 (like the Redmi Note 7), it’s likely to have Bluetooth 5.0 or lower, and new features like LE Audio or Dual Audio won’t work on those devices, even after the MIUI update.

Bluetooth Version Comparison: What Each Provides and Should You Update?

Knowing the version is only half the battle, and it’s important to understand what each version offers and how it affects how your Xiaomi works.

• 🔄 Bluetooth 4.0-4.2: Basic support BLE (Low Energy, speeds up to 1 Mbps Relevant for older devices (Redmi) 4X, Mi A1). Disadvantages: high power consumption, short range (up to 10 m).
• 🚀 Bluetooth 5.0: Up to 2 Mbps, up to 40m (in theory) and Dual Audio (simultaneously connected to two devices) is supported.
• 🎧 Bluetooth 5.1-5.2: Improved location accuracy (Angle of Arrival), support LC3 (Beginning with this version, Xiaomi adds aptX Adaptive (for example, in Xiaomi). 11T Pro).
• 🔊 Bluetooth 5.3: Optimized power consumption, lower latency in audio transmission. POCO F4 GT, Xiaomi 12S Ultra.
• 💡 Bluetooth 5.4 (2023+): Support for Encrypted Advertising Data, improved connectivity stability, so far only in Xiaomi 14 and Redmi K70.

Should you upgrade to a new version of Bluetooth?

• 🎵 You are using wireless headphones with support for aptX or LDAC.
• 🔋 You need to save charge with long-term use of Bluetooth.
• 🎮 You play mobile games with a gamepad over Bluetooth (less delays of 5.2)+).

It makes no sense to update if:

• 📶 You use Bluetooth only to transfer files or connect to a machine.
• 💰 Your current smartphone supports all the features you need (e.g., Dual Audio on 5.0).

Frequent Bluetooth problems on Xiaomi and how to fix them

Even if you know the version of the module, Xiaomi users often encounter connection errors.-5 problems and solutions:

1. The device does not find headphones / column: 🔍 Check if the pairing mode on the accessory is enabled. 📱 Reboot the Bluetooth module: Settings → Bluetooth → ⚙️ → Reset the settings. 🔄 Update the headphone firmware (if supported).
2. Breaking communications or interference: 📶 Make sure there are no obstacles between the devices (walls, metal). 🔋 Check the battery power on both devices (below 20% can cause crashes). 🛠️ Enable Developer Mode and activate Bluetooth Debugging (sometimes helps stabilize the connection).
3. Poor sound quality: 🎵 In Bluetooth accessory settings, select the aptX codec or AAC instead SBC. 🔊 Turn off functions like Absolute Volume (Settings) → Sound. → Additionally).

⚠️ Note: If after the update MIUI/HyperOS Bluetooth stopped working at all, try to roll back on the previous firmware version. POCO X3 NFC Redmi Note 9 Pro when switching to MIUI 13+.

FAQ: Answers to Frequent Bluetooth Questions on Xiaomi