Modern Xiaomi and Redmi smartphones have long ceased to be just devices for calls, turning into powerful multimedia centers that require high-quality acoustic support. The rejection of the 3.5 mm connector in many flagship models and even in the middle segment has made Bluetooth headsets not just a convenient option, but a necessity for comfortable listening to music and games. The process of creating a pair between the phone and headphones in the shell of MIUI or HyperOS usually goes automatically, but often hides the nuances that affect the stability of the connection and the quality of audio stream.
Users often face situations where the device is visible on the list but not connected, or the sound is played with a delay, which is especially critical in games and when watching videos. Understanding the algorithms of the Bluetooth module in Android and the features of its implementation by Xiaomi engineers allows not only to quickly fix problems, but also to squeeze the maximum from existing equipment. In this article, we will discuss in detail all the stages of pairing, configuring hidden parameters and diagnosing problems relevant to current versions of firmware.
The first thing to do before you start any manipulation is to make sure your headphones are in pairing mode. Unlike conventional wired accessories, wireless models require the phone to actively search for the device at a certain time interval. If you just turn on the headphones, they can start looking for the last familiar device, ignoring your new Xiaomi smartphone, so it is important to know how to properly initiate visibility mode.
For most models TWS-Headphones (True Wireless Stereo) and full-size headsets there is a standard algorithm for entering mode. This is usually a long retention of the touch zone or physical button on the case body or the headset itself until the indicator begins to flash a specific color, most often white or alternating red and blue.
⚠️ Warning: If the headphone indicator flashes red quickly or emits a discontinuous sound signal, this means a critically low battery charge. In this mode, the Bluetooth module may not work stable or even turn on at all, so put the case or headphones on the charger before trying to connect.
Once the headset search mode is activated, you need to go to the smartphone interface. Xiaomi owners have the advantage of deeply integrated Bluetooth settings that allow you to manage connected devices more flexibly than in Android stock. However, the basic search algorithm remains the same for all versions of MIUI.
Open the Settings app on the home screen or in the notification curtain. Find the Bluetooth section that is usually located at the top of the menu or in the Connections and Sharing group. Make sure the activation slider is switched to the On position and the phone has started scanning the surrounding space.
- 📱 Click on the gear icon or arrow to the right of your device name in the “Available Devices” list for advanced settings.
- 🔊 Check the connection profile: For music, the profile must be active A2DP, a for talking — HFP/HSP.
- 🔄 If the device is not found, try turning off and re-enable Bluetooth on the phone by resetting the scan cache.
In the Xiaomi ecosystem, the name often duplicates the headphone model, but can sometimes be displayed as a generic device, especially if it is not a branded Chinese counterpart.
The system can request confirmation of the access code, although in modern versions of Android and MIUI this is rare, as it uses the SSP (Secure Simple Pairing) protocol. If the code appears, make sure that it matches on both devices (if there is a screen on the headphones) or just confirm the action. Once you successfully create a pair, the status will change to "Connected", and you will hear a characteristic beep in the headphones.
📊 What type of wireless headphones do you use with Xiaomi?
TWS (Intrachannel with Case)
Full-size consignment note
Necks (sports)
Bone conduction headphones
Once connected successfully, standard settings may not suit you, especially if you plan to use headphones to play games or watch high-resolution video. MIUI shell provides access to hidden developer features that allow you to change compression codecs and manage connection priorities.
To access these settings, you need to unlock the developer menu. Go to Settings → About the phone and find the line version MIUI (or OS). Press it quickly. 7-10 Once in a row, until you get a notification that you've become a developer, and now a new section will appear in the settings menu" →"For developers".
Inside this menu, scroll down to Network or Bluetooth. Here you will find Bluetooth Audio Codec. The default option may be SBC or AAC, but if your headphones support higher-quality codecs (aptX, aptX HD, LDAC, LHDC), you can choose them forcefully.
What's the difference between codecs?
SBC — Basic codec with high compression and loss of quality. AAC — Standard for Apple and many Androids, good quality. aptX/aptX HD — Qualcomm codecs with less latency and better sound. LDAC/LHDC — High resolution codecs that transmit to 3 more data, but requiring a staging> Codec Bitrate (max) Delay Application SBC 328 qbps High (>200 (ms) Basic audition AAC 256 kbit/s Average streaming of music, iOS aptX 352 quiz-slow (~40 MS) Games, Android LDAC 990 High (quality mode) Hi-Res audio, music The choice of codec directly affects the sound quality and stability of the connection. LDAC or HD, But the sound is interrupted when moving, try switching to aptX or AAC. Also in the developer menu you can find the option Absolute volume level. If the volume of the headphones and phone is out of sync, turning this feature on or off often solves the problem. Another important setting for gamers is the low latency mode. Some Xiaomi Redmi models, especially the Black Shark or Redmi K game series, have a separate Game Turbo switch that optimizes Bluetooth connectivity to minimize lags. ⚠️ Warning: Forced codec that is not supported by your headphones (e.g., selection) LDAC For a budget model, it will either cause the sound to disappear or the connection to break permanently. Always check the headset specification before changing the settings. ☑️ Connection quality check Is the desired codec included in the developer menu:Activated Game Turbo for games:Verified version of Bluetooth drivers:Oversized profiles (for example, telephony, if not necessary)Activated Game Turbo for games: 0 / 1 Even with the right settings, users can experience problems when a Xiaomi phone "sees" the headphones but doesn't connect, or the connection is constantly breaking.This is often due to overflowing list of saved devices or a profile conflict. MIUI There is a limit on the number of Bluetooth gadgets remembered, and overflowing this list can block new connections, and the first thing you need to do when you have an error is to reset the pairing list completely. Go to Bluetooth settings, find a problem headset in the list of “My devices”, click on the gear and select Remove or Forget the device. After that, it is recommended to restart the smartphone to clear the cache of the Bluetooth service. If the problem is not solved, try resetting the network settings. This action will return all the parameters of Wi-Fi, mobile Internet and Bluetooth to factory values, but will not delete your personal files or applications. The path to this function: Settings → Connection and sharing → Reset Wi-Fi, mobile networks and Bluetooth. 🔋 Check if power saving mode is on, which can aggressively shut down the Bluetooth module to save charge. 📶 Make sure there are no powerful sources of interference, such as a running microwave or router at 2.4 GHz. 🧹 Clear the Bluetooth app data through the application management menu if a standard reset didn't work. This is not only treated by changing the codec, but also using special players or settings inside apps like YouTube or Netflix, where you can manually adjust the audio delay. VLC or MX Player with precise sound delay calibration. Xiaomi headphone owners (Redmi Buds, AirDots) can use a special Xiaomi Earbuds app (or Mi Buds). M8), Often, problems with connecting to new Redmi phones are solved by updating the firmware of the headset, since older versions of firmware may not work properly with new Android security protocols. 12/13/14. We should not forget the physical side of the issue. Oxidation of contacts on the charging case TWS-Headphones can cause one earphone to fail to charge or turn on, causing the phone to see only one device or not see them at all. Regular cleaning of contacts with alcohol or dry fabric is a mandatory maintenance procedure. Also worth mentioning is the Dual Device Connection feature, which is supported by many modern Xiaomi and Redmi models, which allows headphones to communicate with your phone and laptop at the same time. However, activating this feature can increase power consumption and introduce small delays.If you do not need to constantly switch between devices, it is better to turn this option off in the headphone app for stability. ⚠️ Note: When using dual connectivity, if a video is played on one device (e.g. laptop) and a phone is called, priority is always given to a phone conversation. For advanced users who want to fully control the process, there is the possibility of using the engineering menu, but in modern versions. MIUI It's a little more secure than the use of the system. ADB-commands to reset the Bluetooth stack if the system has completely ceased to respond to commands. adb shell pm clear com.android.bluetooth This command is executed via a computer with installed ADB, Completely clears the Bluetooth service data on the phone, which is equivalent to a deep reset, but without the need to climb into the settings menu. This can help in cases where the settings interface is getting stuck or not displaying devices. 💡The stability of Bluetooth on Xiaomi depends not only on the Android version, but also on the relevance of the firmware of the headphones themselves and the lack of a crowded list of previously paired devices. Why does Xiaomi's phone not see the headphones, even though they are on? The headphones are probably in standby mode, not pairing mode. You need to force them to search mode (usually with a long push of a button) to flash the indicator. Also check if they are automatically connected to another device nearby. How to improve the sound quality in headphones on Redmi? Go to the Developer Menu, find the Bluetooth section and select the codec with the maximum bitrate that your headphones support (LDAC, aptX HD). Also turn off "Absolute Volume Level" if the sound is silent or distorted. Can you connect two pairs of headphones to the same Xiaomi at the same time? Yes, Dual Audio allows you to stream audio to two pairs of Bluetooth headphones at the same time. This option is available in Bluetooth curtains or advanced audio settings, but may not work smoothly on older models. What if the sound in the headphones lags behind the video? Try switching the codec to aptX Low Latency (if supported) or using a video player with manual audio synchronization. Also close the background apps that can load the processor. How to reset Bluetooth settings on Xiaomi to factory? Go to Settings → Connection and sharing → Resetting Wi-Fi, mobile networks and Bluetooth, which will remove all stored devices and network passwords, but often solves the problems with the invisibility of gadgets.