Wireless headphones have become an integral part of everyday life β they are convenient for listening to music, calling and even watching videos. Xiaomi smartphone owners (including Redmi models, POCO and flagship series) often face questions: how to connect Bluetooth headphones correctly, why the device does not find the headset or how to fix interrupts. This article will help you understand all the nuances from basic settings to solving common problems.
We'll look at not only the standard pairing process, but also hidden MIUI features that improve sound quality (such as the aptX codec or LDAC for Hi-Res Audio). And if your headphones refuse to connect, at the end of the article you'll find a checklist for diagnostics and ways to reset Bluetooth settings. Even if you're a beginner, follow the step-by-step illustration instructions (for MIUI 12/13/14) and you won't have any problems.
1.Preparation: checking the compatibility of headphones and smartphones
Before you try to plug in headphones, make sure they are compatible with your Xiaomi.Most current models (like Xiaomi Buds 4 Pro, Redmi Buds 5 or SoundPEATS Air3) support Bluetooth 5.0 and higher, but older smartphones (like Redmi 4X with Bluetooth 4.2) may not unlock the full potential of the headset.
Check out the Bluetooth version on Xiaomi is simple:
- Open Settings β About the phone β All the characteristics.
- Find the Bluetooth version bar (e.g. 5.3 on Xiaomi 13T).
If the headphone version is higher (e.g. Bluetooth 5.2 on the headset vs 4.2 on the phone), connectivity is possible, but there may be no features like low latency or multi-connection to two devices at the same time.
2. Step-by-step instruction: how to connect headphones to Xiaomi
The pairing process takes less than a minute if you follow the algorithm. We will look at the universal method for all Xiaomi models (including the POCO X5, Redmi Note 12, etc.), as well as the nuances for headphones with an on button and touch control.
Step 1. Enable pairing mode on the headphones
The activation process may differ from one model to another:
- π For Xiaomi. Buds/Airdots: press the button on the case charger on 3β5 seconds until the indicator starts flashing white and red (pair mode).
- π§ For Redmi Buds. 3/4: Take the headphones out of the case β they will automatically turn on and go into pairing mode (blinking blue light).
- π For headphones of other brands: usually you need to hold the power button for 5-10 seconds until the indicator flashes (see the instructions for the model).
Step 2: Activate Bluetooth on your smartphone
Open the notification bar (swipe down from the top edge of the screen) and click on the Bluetooth icon. Or go to Settings β Connections and Sharing β Bluetooth.
Step 3. Find the headphones in the list and connect
The name of your headset will appear on the list of available devices (for example, "Redmi Buds 5 Pro" or "LE-QD30" for non-original models). Click on it and in a few seconds it will appear "Connected".
Fully charge your headphones and case|Make sure the headphones are in pairing mode (flashing the indicator)|Disconnect headphones from other devices (laptop, tablet)|Update your smartphone to the latest version MIUI-->
If the headphones don't show up on the list, try:
- π Reboot Bluetooth on your phone (disable/enable in settings).
- π± Remove old connected devices (in the list of Associated devices, click on the gear next to the name and select Forget).
- π Remove and re-insert the headphones in the charging case (for resetting).
3. Sound tuning: codec, equalizer and MIUI functions
Once connected, you should optimize your sound. MIUI has hidden settings that will improve audio quality β especially if you use headphones that support aptX, AAC or LDAC.
How to Choose a Bluetooth Codec
By default, Xiaomi uses SBC, a universal codec, but not the highest quality, to enable high-quality transmission:
- Put the headphones on.
- Open Settings β Connections β Bluetooth.
- Click on the gear next to the headphones name.
- Choose Sound Quality or Codec (not available on all models).
- Install aptX Adaptive (for low latency) or LDAC (for Hi-Res Audio).
Critical detail: LDAC codec is only available on Bluetooth 5.0+ smartphones and headphones that support this standard (for example, Sony WH-1000XM5 or Xiaomi FlipBuds Pro). If the option is inactive, your headset does not support it.
Set up the equalizer in MIUI
To adjust the sound to your preferences:
- Open Settings β Sound and vibration β Equator.
- Choose a preset profile (Bas, Rock, Jazz) or create your own.
- Activate Adaptive Sound (if any) β it automatically adjusts the frequencies to your headphones.
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If you hear noise in your headphones when listening to music, try turning off Absolute Volume in your Bluetooth settings, a feature that synchronizes volume levels on your phone and headset, but sometimes causes distortions.
4. Common Problems and Their Solutions
Even after a successful connection, there can be difficulties: the sound is interrupted, the headphones are turned off or not playing music, and let's look at typical scenarios and how to eliminate them.
Problem 1: Headphones are connected, but there is no sound
Possible causes and solutions:
- π The sound goes to the speaker of the phone: during a call or playback of music swipe down the notification panel and click on the icon Headphones (if it is not active β tap on it).
- π΅ Wrong audio source: In some applications (like YouTube or Spotify), you need to manually select the output device. Open the player and find the Playback device option.
- π§ Bluetooth crash: Reboot your phone and headphones (put them in your case for 10 seconds, then pull out).
Problem 2: Permanent connection breaks
If the sound is interrupted every few seconds:
- πΆ Wi-Fi interference: Bluetooth and Wi-Fi are running on the same frequency (2.4GHz).Try to turn off Wi-Fi or switch the router to a 5GHz channel.
- π Weak headphone charge: If battery level is below 20%, lags can occur.
- π± Outdated firmware: check for updates MIUI In Settings β The phone. β Updating the system.
What if the headphones are connected to only one device?
β οΈ Note: If Xiaomi or Redmi headphones give an error "Device not supported" when connecting, check the firmware region of your smartphone. Some models (such as Redmi Buds 4 Active) require global or Chinese MIUI β European Firmware may cause conflicts.
5. How to turn off and reset headphones
If you want to connect the headset to another device or fix pairing errors, you need to disconnect it from the phone correctly. Simply turning off Bluetooth is not enough, it can lead to problems when reconnecting.
Disconnection without deletion from memory
To temporarily break the connection:
- Open Settings β Bluetooth.
- Click on the gear next to the headphones name.
- Select to Disable (Do not Forget!).
Full coupling reset
If the headphones are glitching (for example, one earphone is not working or the sound is distorted), perform a hard reset:
- Remove the device from the list of conjugates (Settings β Bluetooth β Forget).
- For Xiaomi/Airdots: Put your headphones in your case, open the lid and press the button for 20 seconds (the indicator will flash red 3 times).
- For other models: see the instructions (usually hold the power button for 10-15 seconds).
- Reconnect the headphones as if they were new.
| Problem. | Reason. | Decision |
|---|---|---|
| Headphones are not on | Case battery discharged | Connect the case to charging for 30 minutes, then try again |
| The sound is only in one headphone. | Synchronization failure | Put both earphones in the case, take out and wait 10 seconds |
| The microphone is not working. | Incorrect source of audio for calls | In the call settings, select Headphones as an input device |
| The headphones are connected, but immediately switch off. | Conflict with another device | Turn off Bluetooth on all other gadgets (laptop, tablet) |
6 Additional features: multi-connection and gestures
Modern Xiaomi headphones support advanced features that make it easier to use. For example, Xiaomi Buds 4 Pro can connect to a phone and laptop at the same time, and Redmi Buds 5 recognize touch gestures.
How to enable multi-connection (Dual Mode)
The feature allows the headphones to be paired with two devices at the same time (e.g. smartphone + PC) to activate:
- Connect the headphones to the first device (smartphone).
- Activate the pairing mode on the headphones (see section 2).
- Connect the second device (laptop) β the headphones will automatically switch between them depending on the activity.
Limitation: The feature only works on Bluetooth 5.2+ headphones and is not supported by all Xiaomi models.
Setting up sensory gestures
On headphones with touch control (for example, Xiaomi FlipBuds Pro) you can assign actions to touch:
- π Two touches: playback/pause.
- π Three touches: next track.
- π Retention: Calling the voice assistant (Google Assistant or Xiao) AI).
To change the gestures:
- Install the official Mi Earphones app (available on Google Play).
- Open the Touch Management section and set up actions.
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The Mi Earphones app also allows you to update the headphone firmware, check the charge level of each headphone separately and turn on the Game Sound mode (reduces latency to 80 ms).
7 How to check the quality of the connection
If you doubt that the headphones are working at full capacity, you can check the stability of the connection and sound quality with the help of built-in MIUI tools and third-party applications.
Verification of Bluetooth version and codec
To find out what codec is currently in use:
- Put the headphones on.
- Open Settings β About the phone β All characteristics β Condition.
- Find the Bluetooth partition, and the current codec (such as AAC or aptX) will be listed there.
Sound delay test (for games and videos)
If the sound in the games or movies is not synchronized with the image:
- Install the SoundAbout app (from Google Play).
- Select Media Audio and set the latency manually (e.g. +50ms or +100ms).
- Check sync with a YouTube test video (search for "audio sync test").
β οΈ Note: Headphones with aptX Low Latency codec (for example, Xiaomi Buds) 3T Pro) delayed ~40ms, which is good for gaming. SBC or AAC, delay can reach 200-300 ms β this is critical for shooters or rhythm games.