Xiaomi smartphone owners often wonder about the technical specifications of their device, especially when it comes to wireless connections. The Redmi Note 8T model, released in late 2019, was a real hit of the mid-range segment, but information about its support for specific data transfer protocols is sometimes controversial. Understanding which version of Bluetooth is installed in your gadget is critical for choosing compatible headphones, smart watches or car headsets.
Incorrect information about codec or communication standards support can lead to frustration with sound quality or peripheral instability. In this article, we will take a closer look at the software and hardware aspects of the communications module in Redmi Note 8T so you can get comprehensive information without having to disassemble the phone. We will look at both standard methods through the MIUI interface and deeper diagnostic methods.
It is worth noting that the Redmi Note 8T is based on the Snapdragon 730G chipset, which supports Bluetooth 5.0 hardware. However, the software shell and drivers can make adjustments to the display of this information. So it is not enough to get accurate data just to look in the advertising booklet - you need to diagnose the current state of the system.
Use of the Engineering Menu for Module Diagnostics
The most reliable way to access the hidden parameters of the radio module is to log into the engineering menu, which is designed for service engineers, but is also available to ordinary users after entering special code. The Redmi Note 8T is characterized by a standard set of Android commands that allow detailed information about all RF modules, including Wi-Fi and Bluetooth.
To get into the testing menu, open the standard Phone app and dial the combination ##4636##. If the code is entered correctly, the system will automatically redirect you to the Testing section, where you need to select the "Bluetooth information" or "Bluetooth test" option.
⚠️ Warning: Be extremely careful when changing any settings in the engineering menu.Accessual activation of test modes or changing signal power parameters can lead to unstable wireless connections.
In the window that opens, you will see a list of options, among which Bluetooth Version may be indicated. If there is no direct line, please note the section "Bluetooth HCI snoop log" - its presence and activity often indirectly indicate support for modern debugging standards, typical for versions 4.2 and above. For the average user, it is enough to make sure that the module is active and correctly determines the version of the protocol in the system.
Verification through developer settings and logging
A safer, less informative way is to use the developer menu, and this section is hidden by default, but activating it allows you to access the advanced Bluetooth stack settings. → About the phone and seven times quickly click on the item "Version" MIUI".
Once you have a "You've become a developer" notification, go back to the main settings menu and find the "Additional" or "Extended Settings" section. Inside you are interested in "Developers" item. Scroll down to the "Network" or "Bluetooth" block. Here you can find the "Enable Log" option. HCI Bluetooth" (Bluetooth HCI Activating this log allows you to save data packets, which can then be analyzed on a computer.
- 📱 Go to Settings. → About the phone and press 7 times on the version MIUI.
- 🔧 Open the "Developers" menu in the additional settings section.
- 📡 Find the item "Include the journal" HCI Bluetooth and activate it.
- 💾 Connect the headphones and play audio, then analyze the log.
Log analysis is a lot for advanced users, as it requires the installation of special software on a PC, such as Wireshark. However, the fact that there are certain flags in the log confirms the support of high-quality codecs, such as aptX or LDAC, which work only on Bluetooth 4.0 and higher bases. For the Redmi Note 8T, this is relevant, since the device is positioned as multimedia.
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If you do not plan to conduct a deep diagnosis, just turn on the log, listen to music in good quality and turn off logging so as not to overflow the memory of the phone with temporary files.
Analysis of supported codecs as a version indicator
An indirect but very effective method of determining the capabilities of a Bluetooth module is to check the list of supported audio codecs. Version 5.0 installed in the Redmi Note 8T theoretically allows you to transmit high-resolution audio, but this depends on the manufacturer's implementation. Codec verification gives you an idea of how advanced your communication module is.
You'll need a developer menu to view the codec list again. In the Bluetooth settings section, find the Bluetooth Audio Codec. When you click on it, you'll see a drop-down list of formats that your smartphone can decode. SBC and AAC codecs are guaranteed, but having aptX, aptX HD or LDAC indicates high bandwidth.
| Codec | Bitrate (kbit/s) | Required version of BT | Support for Redmi Note 8T |
|---|---|---|---|
| SBC | 328 | 2.0+ | Yes. |
| AAC | 256 | 4.0+ | Yes. |
| aptX | 352 | 4.0+ | Yes. |
| aptX HD | 576 | 4.2+ | Yes (limited) |
| LDAC | 990 | 4.2+ | No (mode required) |
Keep in mind that even if you have aptX HD on the list, the actual work depends on the device you're connected to. If your headphones don't support that codec, the system will automatically switch to AAC or SBC. This is normal protocol behavior, ensuring compatibility with any hardware.
Using third-party applications for accurate information
If the built-in tools seem too complex or uninformative, you can always use specialized software from the Google Play Market. There are many utilities that read data directly from the Bluetooth chip drivers and output it in an understandable way, which is the easiest way for inexperienced users.
One of the most popular and proven applications is Bluetooth Scanner or AIDA64. Once installed and launched, these programs scan the environment and the device itself. In the "Device" or "Bluetooth" section, you will see the exact model of the chip (in the case of the Redmi Note 8T, this is usually the Qualcomm module) and the Bluetooth Core Specification version.
☑️ Checking through the application
The advantage of such applications is that they show not only the version, but also the current connection state, signal level (RSSI) And a list of all the profiles that are currently active, which is useful if you're trying to understand why file transfers are not working or why the headphones are quiet: A2DP music-- HFP call-in.
⚠️ Attention: Download diagnostic applications only from official sources. APK-Files may contain malicious code that will gain access to your personal data and connection history.
Technical features of the Snapdragon 730G chipset
To understand why the Redmi Note 8T behaves this way, you need to look under the hood.The heart of the smartphone is the Qualcomm Snapdragon 730G processor. This chipset integrates the Qualcomm WCN3991 modem, which is responsible for wireless communications. According to official documentation Qualcomm, this module supports the Bluetooth 5.0 standard with True Wireless Stereo technology.
Version 5.0 brought with it increased range (up to 4 times that of 4.0) and a fourfold increase in bandwidth. For a Redmi Note 8T user, this means a more stable connection to a smartwatch even in a pants pocket and the ability to stream audio to two independent devices simultaneously (a Dual Audio feature), although software in MIUI can be limited.
It’s important to understand the difference between the Bluetooth version and supported profiles. The chipset may be version 5.0, but if the smartphone manufacturer (Xiaomi) did not certify the device to work with a specific codec, it will not be available. In the case of the Note 8T, the situation is favorable: support for aptX is officially declared, which is rare for the budget segment of the time.
Why is file transfer speed low?
Solving Typical Connection Problems
Even with the exact version of Bluetooth, users can face problems such as interrupting the sound, not being able to pair or having low volume. Often the reason is not the protocol version, but software conflicts or accumulated cache of services. The first step should always be to clean up the Bluetooth cache.
To do this, go to Settings → Apps → All apps, find in the list “Bluetooth”, click “Memory” and select “Clear cache” and “Clear all data”. Fear not, this will not delete your paired devices forever, but reset the stack settings, which often solves the problem of “glue” connection.
- 🔄 Reboot your smartphone after resetting your Bluetooth settings.
- 🗑️ Remove the device from the list of coupled and pair again.
- 📶 Make sure that the device does not include the power saving mode that limits the operation of the module.
If problems persist, it’s worth checking for system updates. Xiaomi regularly releases security patches and stability improvements for its popular models. Go to Settings → About Phone → System Update and check for new versions of MIUI. Sometimes a firmware update brings new drivers to the communication module.
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Resetting Bluetooth settings and reconnecting the device solves 80% of software connection stability issues on the Redmi Note 8T.
Comparison with competitors and final conclusions
In its price segment, the Redmi Note 8T looked very decent thanks to the presence of NFC and full Bluetooth 5.0 with support for aptX. Many competitors from Samsung or Huawei at the time often trimmed the functionality, leaving only the basic SBC codec. This makes the phone relevant even a few years after its release, especially for audiophiles on a limited budget.
However, it is worth remembering that the technology does not stand still: modern standards Bluetooth 5.2 and 5.3, used in the flagships of 2023-2026, offer improved power consumption and LE Audio. Redmi Note 8T does not support these innovations, but for everyday use of its capabilities are more than enough.
In conclusion, determining the Bluetooth version on your device is not just about satisfying curiosity; it's about knowing how to customize the sound, pick up accessories and troubleshoot issues. Use an engineering menu for quick checkout or an app for detailed analysis, and your Xiaomi will work as efficiently as possible.