Xiaomi’s wireless headphones — whether it’s Redmi AirDots, Mi True Wireless Earbuds or Xiaomi FlipBuds Pro — often suffer from low volume when connected via Bluetooth. The problem is especially noticeable in the background of wired counterparts: the sound seems muffled, the bass is lost, and at the maximum there are distortions. Not only the manufacturer’s limitations, but also the peculiarities of the Bluetooth protocol, which compresses the audio stream to save energy.
Many users try to solve the problem by simply turning up the volume on a smartphone, but this does not always work: the system regulator is often locked at 70-80% of the real maximum. Fortunately, on Xiaomi devices (including models on MIUI 12/13/14 and HyperOS), there are several ways to get around this limitation, from standard settings to hidden functions of the engineering menu.
Let's warn you right away: not all solutions are equally safe. Some can overload the earphone speakers or even break them. So before you experiment, check if your Xiaomi model supports certain settings, which we will also discuss below.
Why are Bluetooth headphones on Xiaomi quieter than wired ones?
The reason for the low volume is a combination of hardware and software constraints, and here are the key factors:
1. Bluetooth protocol and codec. Most Xiaomi headphones use SBC codec (standard for Android), which compresses sound very strongly. More advanced codecs — AAC or aptX — give better quality, but require support from both the smartphone and the headphones. For example, Xiaomi Buds 4 Pro supports LC3 (for MIUI 14+), but on older models it may not work.
2. MIUI/HyperOS Limitations: Xiaomi’s firmware artificially lowers the maximum volume for Bluetooth devices to protect the user’s hearing and headphone dynamics, even for flagships like the Xiaomi 14 Ultra.
3 Hardware headphone limits: Cheap models (e.g. Redmi Buds 3 Lite) are physically unable to produce sound louder than a certain threshold; increasing the volume of software can cause distortion or damage to the membranes.
4.Sevenness settings: The MIUI defaults on Dolby Atmos or Mi Sound Enhancer, which optimizes the sound for specific scenarios (movies, music, games), but sometimes lowers the overall volume.
To find out where the sound is “lost,” do a simple test:
- Connect the headphones over the wire (if the model supports).
- Turn on the track and remember the volume level.
- Turn off the wired headphones and connect the Bluetooth analogue.
- Compare the volume at the same position of the regulator on the smartphone.
If the difference is significant, the problem is precisely Bluetooth or MIUI settings.
Method 1: Sound settings in MIUI/HyperOS (without root)
Before you go to the engineering menu or install third-party apps, check the standard settings. The latest versions of MIUI 14 and HyperOS have additional controllers for Bluetooth devices.
Instructions:
- Open the Settings. → Sound and vibration.
- Slip the gear icon next to the volume slider (or select Additional settings).
- Find Media Volume or Bluetooth Volume (the name depends on the firmware version).
- Activate the option to Separate Volume Controls (if any) to independently adjust the volume for the headphones and the speaker of the smartphone.
- Move the Bluetooth slider to maximum.
⚠️ Note: On some models (e.g, POCO X3 Pro) this regulator may not be available, in which case proceed to the following method.
Also, check out the Dolby Atmos settings:
- 🎵 Turn off Dolby if it's on - sometimes it artificially lowers the volume to "purity" the sound.
- 🔊 Try switching to Music or Games mode – they usually give more volume than the Movie.
- 🎧 Turn on Adaptive sound (if any) – it automatically adjusts the volume to the surrounding noise.
Method 2: Engineering Menu (MTK/Qualcomm)
If standard settings don’t work, you can try changing Bluetooth settings through an engineering menu, a method that works on most Xiaomi smartphones (except the newest ones on HyperOS, where access can be blocked).
For Qualcomm (Snapdragon) processors:
- Open the phone app and enter the code: ##4636##
- Select Phone Information (or Testing).
- Scroll down to the Bluetooth audio section.
- Find the AVRCP Version option and set the value 1.6 (if available).
- Go back and select Hardware info → Audio → Bluetooth.
- Try changing the Bluetooth Absolute Volume to Disabled.
For MediaTek processors (Helio, Dimensity):
- Enter the code: ##36446337## (or #3644633## for older models).
- Go to Hardware Testing → Audio.
- Select Bluetooth and find the Max Vol or Volume Boost options.
- Increase your value by 10-20% (do not bet the maximum!).
⚠️ Attention: Incorrect settings in the engineering menu can cause a Bluetooth module to crash or distort the sound. If the headphones stop connecting after the changes, reset the network settings (Settings) → Connections → Reset Wi-Fi, mobile network and Bluetooth).
Make a backup copy of the data
Remember the current Bluetooth settings
Do not change the parameters whose names you do not understand
Reboot the smartphone after the changes-->
Method 3: Applications for sound amplification
If the system methods don't work, you can use third-party applications, and they work in different ways: some just increase the volume programmatically (risk of distortion), others optimize the sound through a uniform frequency distribution.
Top.-3 tested applications:
| Annex | How it works | Pluses | Cons |
|---|---|---|---|
| Volume Booster GOODEV | Increases volume by changing system parameters (requires permission to access settings) | Free, simple interface, works without root | It can cause distortions at maximum. |
| Equalizer FX | Configures the equalizer and enhances individual frequencies | Support for presets, works with most headphones | You need to manually select the settings for your model |
| ViPER4Android FX | Advanced sound processing with volume enhancement and frequency correction | Best sound quality, Bluetooth support | Hard to customize, requires root on new versions of Android |
How to install and configure Volume Booster GOODEV:
- Download the app from Google Play.
- Open it and give access to the sound settings.
- Go to the Bluetooth tab.
- Move the Max Volume slider 110-120% (not higher!).
- Turn on the Safe Mode option to avoid distortion.
⚠️ Note: Apps like Volume Booster can damage headphone speakers if you set the volume higher 120%. Start with 105-110% And check the sound for distortion.
💡
Before using amplifiers, test the headphones at maximum volume through standard settings. If you already have wheezing, it is software dangerous to turn up the volume!
Method 4: Change the configuration file (for advanced)
This method requires access to the root files of the smartphone, but gives the most noticeable increase in volume, suitable for users with an unlocked bootloader and installed Magisk (root).
Instructions:
- Install a file manager with root support (such as Solid Explorer or FX File Explorer).
- Go to /system/vendor/etc/ or /system/etc/.
- Find the file. mixer_paths.xml (or mixer_paths_tasha.xml for some).
- Make a backup copy of it (copy it elsewhere).
- Open the file in the text editor and find the lines with the parameters: <path name="bluetooth-sco"> <ctl name="RX1 Digital Volume" value="84" /> <ctl name="RX2 Digital Volume" value="84" />
- Increase the value to 90-95 (not higher!).
- Save the file, set the rights 644 (rw-r--r---).
- Reboot your smartphone.
Important: On models with Snapdragon processor 8 Gen 2/3 (for example, Xiaomi 13T Pro) the path to the file may be different. /vendor/etc/audio_platform_info.xml.
⚠️ Attention: Incorrect editing mixer_paths.xml If the speaker or Bluetooth stop working after the changes, restore the original file from the backup.
What if the sound is lost after editing the file?
Method 5: Update your firmware and Bluetooth drivers
Sometimes low volume is due to firmware bugs or outdated drivers. Xiaomi regularly releases updates that optimize the performance of Bluetooth codecs.
How to update firmware:
- Go to Settings → About the phone → System update.
- Click Check for updates.
- If you have a new version of MIUI or HyperOS, install it.
How to update Bluetooth drivers (for root models):
- Download the current drivers for your model from the XDA Developers forum.
- Install them via TWRP or Magisk.
- Reboot your smartphone.
Models for which Bluetooth patches are often released:
- 📱 Xiaomi 12/12 Pro (problems with LDAC)
- 📱 POCO F4 GT (Bugs with aptX Adaptive)
- 📱 Redmi Note 11 Pro+ (low-volume MIUI 13)
If there are no updates, try resetting your Bluetooth settings:
- Go to Settings → Connections → Bluetooth.
- Slip on the gear icon → Reset Bluetooth settings.
- Reconnect the headphones.
💡
Updating your firmware is the safest way to turn up the volume, but it doesn’t always work. If you have a problem after the update, combine this method with others (for example, setting the equalizer).
Method 6: Alternative codec and developer settings
On Xiaomi smartphones, you can manually select a Bluetooth codec to be used to connect headphones. Some codecs (such as AAC) give better volume than a standard SBC.
How to change the codec:
- Activate Developer Mode: Go to Settings → About Phone and tap the MIUI version 7 times.
- Back to Settings → Additionally. → For developers.
- Find the Bluetooth Codec (or Bluetooth Audio Codec) option.
- Choose AAC or aptX (if supported by your headphones).
- Also activate Turn off the absolute volume of Bluetooth (if any).
Which codec is supported by Xiaomi headphones:
- 🎧 Redmi AirDots 3 Pro: SBC, AAC
- 🎧 Xiaomi Buds 4 Pro: SBC, AAC, LC3
- 🎧 Mi True Wireless Earbuds 3: SBC, AAC, aptX Adaptive
⚠️ Note: If after changing the codec the sound became intermittent or stuttering appeared - go back to the SBC. Some headphones don’t work well with AAC older versions MIUI.
Method 7: Hardware solutions (if nothing worked)
If the software methods didn't work, the problem could be the headphones themselves or the Bluetooth module of the smartphone.
1 Check the headphones on another device, connect them to a laptop, tablet or other smartphone, and if the volume is that low, the problem is with the headphones.
2. Clean the earphone speakers. Dust and earwax can drown out sound. Use a soft brush or compressed air.
3. Check the density of the earpieces. If the earphones are not tight in your ears, the sound "leaks out." Try changing the earpieces to a larger size.
4. Use an external Bluetooth transmitter. Cheap adapters (such as the Baseus WM01) sometimes give a better volume than the built-in smartphone module.
5. Take the smartphone to the service. If the problem occurred after a fall or moisture, the Bluetooth module could be damaged. On Xiaomi models, it costs 1,500-3,000 to replace it. ₽.
Critical point: Xiaomi headphones with support for ANC (active noise cancellation) often have low volume in ANC mode. Try turning off noise cancellation - the sound will become louder.