What is the Bluetooth version of Xiaomi Redmi? 8A: full guide on characteristics and settings

Xiaomi Redmi 8A — One of the most popular budget smartphones of 2019, which is still widely used for its reliability and simple functionality, but many owners still wonder: what version of Bluetooth is supported in this model? This is important for connecting headphones, speakers, fitness bracelets and other gadgets. In this article, we will not only answer the main question, but also tell you how to check the Bluetooth version on your device, compare it with other Xiaomi models, and give practical tips on optimizing the connection.

Note: information about the version of Bluetooth in Redmi 8A This is often contradictory even in official sources, because manufacturers sometimes indicate support for protocols at the chipset level rather than actual implementation in the firmware. We have analyzed technical documentation, user reviews and test results to provide accurate data. If you plan to connect modern wireless devices to your smartphone, this article will help you avoid disappointment.

What version of Bluetooth is claimed in Redmi 8A

According to official specifications from Xiaomi, the smartphone Redmi 8A (model M1908C3IC) It's equipped with a Bluetooth 4.2 module:

• 📄 Documentation on the Mi.com website (Section of technical specifications).
• 🔧 Data from Qualcomm Snapdragon 439 chipset, which supports Bluetooth 4.2.
• 📦 Packaging of the device (some regional versions indicate support) BLE — Bluetooth Low Energy).

But there's a nuance here: some sources (including third-party stores) mention Bluetooth 5.0, a mistake that has to do with confusing terminology, because the Snapdragon 439 chipset is technically capable of working with Bluetooth 5.0, but Redmi does. 8A The manufacturer has limited support to 4.2 at the firmware level, a common practice in low-end models where hardware savings lead to a reduction in functionality.

It is important to understand that Bluetooth 4.2 is not the most modern standard (version 5.3) is current at 2026, but it is quite sufficient for most tasks:

• 🎧 Connecting wireless headphones (including AirDots and analogues).
• 🔊 Transmission of sound to portable speakers.
• 📱 Synchronization with fitness bracelets (Mi Band, etc.).
• 🚗 Connection to car radios (if they support) A2DP).

How to check the Bluetooth version of Xiaomi Redmi 8A independently

If you want to verify the Bluetooth version on your device, there are a few ways to do it, the first and easiest way is through the settings menu:

1. Open the Settings app (cog icon).
2. Go to the About Phone section (usually at the bottom of the list).
3. Put on the item All characteristics or information about the software.
4. Find the Bluetooth line and the version will be listed.

However, some firmware (especially custom) may not have this item, in which case a specialized application will help.

• 📱 AIDA64 (section → Bluetooth).
• 🔍 DevCheck (Hardware tab).
• 🛠️ CPU-Z (section SOC).

If none of the methods worked, you can use the command line (required). ADB):

adb shell dumpsys bluetooth_manager

In the output, look for the mAdapterProperties line, which will indicate the version, which is suitable for advanced users.

⚠️ Note: Some apps in the Play Market (such as Bluetooth Version Checker) may show incorrect data, because they read information from system files that sometimes contain errors. AIDA64.

Bluetooth 4.2 compared to other versions: what you lose

Bluetooth 4.2 version in Redmi 8A It has some limitations compared to more modern standards:

The main disadvantages of Bluetooth 4.2 in Redmi 8A:

• 🔊 Low quality of sound when transmitting music (used outdated codec) SBC).
• 🔋 Fast battery discharge with prolonged use (for example, when listening to music in headphones for more than 2 hours).
• 🎮 Delays when playing with wireless gamepads (latency up to 100 ms).
• 📶 Unstable connection at a distance of more than 5 meters (especially in areas with interference).

However, for basic tasks (calls, file transfer, Mi Band connection), this version is quite enough. LE Audio, you will have to consider newer Xiaomi models, for example, Redmi Note 10 or Xiaomi. POCO X3.

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If you are using Redmi 8A For Bluetooth music, try headphones that support the aptX codec. Despite the limitations of version 4.2, some models (e.g. SoundPEATS) Air3) They show better sound quality due to optimized software.

Bluetooth problems at Redmi 8A And how to solve them.

Redmi users 8A They often encounter typical Bluetooth problems, and here are the most common ones and how to fix them:

1. Bluetooth is not turned on or permanently disabled

Reasons:

• 🔄 Firmware failure (especially after update) MIUI).
• 📱 Conflict with other modules (Wi-Fi, GPS).
• 🔋 Battery savings (function of adaptive battery in the MIUI Can block background processes).

Decisions:

1. Reboot your phone (hold the power button for 10 seconds).
2. Reset network settings: Settings → System → Reset → Network settings reset.
3. Turn off battery saving mode for Bluetooth: Settings → Battery → Saving charge → Settings → Bluetooth (disable the restriction).

2.The headphones are plugged in, but the sound is interrupted

This is a typical problem for Bluetooth 4.2 due to its weak noise resistance.

• 📵 Reduce the distance between the phone and headphones (optimally up to 3 meters).
• 🔇 Disable other devices using wireless networks (Wi-Fi, microwaves, wireless mice).
• 🔄 Reconnect the headphones manually (forget the device and pair again).

3. It is impossible to connect a fitness bracelet (Mi Band, etc.)

Most often, it's about conflicting protocol versions.

1. Update the bracelet firmware through the Mi Fit or Zepp app.
2. Install the latest version MIUI on the phone (via Settings) → Updating the system).
3. If the bracelet still doesn’t connect, try using another app (like Notify & Fitness for Mi Band).

⚠️ Note: If after the update MIUI Bluetooth stopped working completely, this may be due to damage to system files. In this case, only a full reset will help (don’t forget to back up the data!). 8A in forums (for example, 4PDA or XDA-Developers).

How to improve Bluetooth performance on Redmi 8A: practical advice

Even with Bluetooth 4.2 limitations, you can optimize your wireless devices on Redmi 8A. Here are a few proven ways:

1. Optimization of MIUI settings

In the firmware MIUI There are hidden settings that can affect Bluetooth stability:

• 🔧 Turn off the Adaptive Battery for Bluetooth Devices: Settings → Battery → Saving charge → Settings → Bluetooth (off).
• 📵 Enable High Performance Mode in Developer Settings (Relevant for Gamers): Settings → The phone. → Version. MIUI (tap) → Developer settings → Select “High productivity".

2. Use of alternative codecs

Thought Redmi 8A Officially, it only supports SBC, Some headphones can work with AptX or AAC via third-party applications:

• 🎧 Install Bluetooth Audio Codec Changer from Play Market (root rights required).
• 🔊 In the application settings, select the priority codec (for example, AAC for better sound quality).

3. Update firmware via Fastboot

If you have a Redmi. 8A It works on the old version. MIUI, It could be causing problems with Bluetooth:

1. Download the latest firmware for your model from en.miui.com.
2. Unpack the archive and move the file to the folder downloaded_rom cell-root.
3. Open the Update app, click on the three dots in the top right corner and select Select the firmware file.

⚠️ Note: When you manually upgrade via Fastboot (not through recovery!), there is a risk of "bricking" the device if you choose the wrong firmware (M1908C3IC for Redmi 8A) region (Global/China/EEA).

Bluetooth Alternatives: When to Consider Other Connection Ways

If you have Bluetooth 4.2 capabilities in Redmi 8A You are not satisfied, there are several alternative ways to connect devices:

1.Using a Bluetooth 5.0 adapter

You can buy an external Bluetooth adapter with support for 5.0 or 5.2, which connects through the Internet. USB-C. For example:

• 🔌 TP-Link UB500 (Bluetooth 5.0, price ~1,000 rubles.).
• 🎵 1Mii B06 Pro (Bluetooth 5.0 with aptX) LL low-latency).

The Adapter will take up the port. USB-C, squash.

2. Connection through AUX-cable (3.5 mm)

Redmi 8A It's equipped with a standard 3.5 mm connector, which allows you to connect wired headphones or speakers without losing quality:

• 🎧 Audiophiles (no audio compression like Bluetooth).
• 🎮 Gamers (zero delay).
• 🚗 Automotive systems (many tape recorders support auxiliary input).

3. File transfer via Wi-Fi Direct or NFC

To exchange data between devices, you can use:

• 📶 Wi-Fi Direct (speeds up to 10 Mbps, but high battery consumption).
• 📱 NFC (Only for small files up to 10 MB).
• 🌐 Cloud services (Mi Cloud, Google Drive).

Each of these methods has its pros and cons, but in some scenarios they are more reliable than Bluetooth.

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If you need to connect to Redmi 8A With modern headphones that support Bluetooth 5.0, an external adapter is the best solution, it will cost less than buying a new smartphone, and will ensure compatibility with the latest standards.

FAQ: Frequent questions about Bluetooth in Xiaomi Redmi 8A