Why Xiaomi wireless headphones jam, slow down or turn off – a full analysis of the causes and solutions

Xiaomi wireless headphones are some of the most popular accessories due to the price-quality ratio, but even they are not immune to technical failures. Users often face a problem when the sound begins to “stuck”: interrupted, slowed, interfered with or one of the headphones lagged behind the other. In some cases, the device completely disconnects after a few minutes of operation, the reasons for this behavior can be both software (related to firmware or settings) and hardware (battery wear, damage to contacts).

In this article, we will discuss 7 key causes of jamming in Redmi AirDots, Mi True Wireless Earphones, Xiaomi Buds, and others, as well as give step-by-step instructions for diagnosing and troubleshooting. Particular attention will be paid to the hidden Bluetooth settings in MIUI, which affect the stability of the connection, but few people know about. If you have already tried to reconnect your headphones or reset them to factory settings, do not rush to throw the gadget away: in 90% of cases, the problem can be solved without repair.

1. Bluetooth communication problems: why headphones "lose" the signal

The most common cause of jamming is an unstable Bluetooth connection, which can be due to:

• 📱 Outdated version of Bluetooth on a smartphone (e.g. Bluetooth 4.2 instead of 5.0)+).
• 🔄 Conflict with other devices connected to the phone (fitness bracelets, smart watches).
• 🏠 Interference from a 2.4 GHz Wi-Fi router (the same frequency used by Bluetooth).
• 🔋 Energy-saving regimes in MIUI, which limit background Bluetooth activity.

To check if Bluetooth is to blame, try connecting your headphones to another device (like a tablet or laptop), if the problem is gone, it's your smartphone settings, and if the jamming is still there, it's the headphones themselves.

How to fix it:

1. Update your smartphone firmware to the latest version (in Settings → About Phone → System Update).
2. Turn off power saving for Bluetooth: go to Settings → Battery → Battery Mode → Settings → Energy saving apps and add Bluetooth to exceptions.
3. Change your Wi-Fi channel on your router from 2.4 GHz to 5 GHz (if supported).

💡

If you have a Xiaomi Buds 4 Pro, try turning on LDHC (High Sound Quality) mode in your Bluetooth settings – sometimes this eliminates microlatency.

2.Discharged or worn-out battery: when the headphones "don't pull"

Lithium polymer batteries in wireless headphones degrade over time, and after 300 to 500 charging cycles, their capacity decreases by 20 to 30 percent, resulting in:

• ⚡ Disconnect one or both headphones at 30-50 charge level%.
• 🔊 Sound jamming due to lack of power for stable operation of the Bluetooth module.
• 🔄 Spontaneous reboots when playing music.

You can check the battery status using the Mi Fit app (for some models) or third-party utilities like AccuBattery. If the capacity has fallen below 60% of its nominal value, the battery needs to be replaced.

Temporary solution: If you can’t replace the battery, try:

• 🔌 Charge headphones in short cycles (for 20-30 minutes), not up to 100%.
• 🎵 Reduce the maximum volume to 60-70% (saving charge).
• ❄️ Avoid overheating (do not leave headphones in the sun or near heat sources).

3. Software failures: when the firmware or application is to blame

Errors in headphone firmware or conflicts with apps (e.g. Mi Fit, Xiaomi Wear) can cause:

• 🔄 Cyclical reconnections (earphones then connect, then break the connection).
• 🎧 Stereocouple out-of-synchronization (one earphone lags behind the other).
• 🔇 Loss of sound for 1-2 seconds, followed by recovery.

This is most often done after the MIUI update or the headphone firmware itself, for example, Redmi AirDots 3 had a critical bug in the V12.1.4.0 firmware version, which caused the headphones to shut down after 10 minutes of operation.

How to fix it:

1. Reset the headphones to factory settings: 1. Place both headphones in the case. 2. Press and hold the button on the case for 15 seconds (until white/red flashes). 3. Remove the device from the list of conjugated in the Bluetooth settings of the smartphone. 4. Connect again.
2. Update the firmware of the headphones through the official app (for supported models).
3. Turn off audio effects in the MIUI sound settings (Settings → Sound → Sound Effects).

Physical damage: water, falls and oxidation of contacts

Even if your headphones have IPX4 protection (like the Xiaomi Buds 4 Pro), they are not completely waterproof.

• 💧 Oxidation of contacts in the case or on headphones (leads to poor charging and failures).
• 🔌 Short circuits in the control board (earphones spontaneously turn off).
• 🎛️ Damage to speakers (sound becomes hoarse or intermittent).

How to check:

1. Examine contacts in the case and on headphones for green plaque (oxidation) or corrosion.
2. Shake the earpiece next to the ear - if you hear foreign sounds (for example, gurgling), moisture has accumulated inside.
3. Check if the headphones are overheating during operation (this is a sign of a short circuit).

⚠️ Warning: If the headphones have fallen into water or been exposed to extreme humidity, do not connect them to charging until completely drying (at least 24 hours.

What to do:

• 🧹 Clean contacts with an alcohol tampon (at least 70% alcohol).
• 🔥 Dry headphones in rice or silica gel (do not use a hair dryer!).
• 🛠️ If the fee is damaged - contact the service center (self-repair is fraught with breakdown).

5. Conflict with other wireless devices

If you have other Bluetooth devices (columns, keyboards, mice) running near you, they can interfere at 2.4 GHz, especially in offices or public places where many devices are connected at the same time.

• 🔊 The sound is interrupted at intervals of 1-3 seconds.
• 🎧 Headphones reconnect to another device (for example, to a laptop instead of a phone).
• 📶 The quality of communication deteriorates when moving away from the smartphone by 2-3 meters.

How to solve the problem:

1. Turn off unnecessary Bluetooth devices within a 5-meter radius.
2. In the headphone settings (if supported), turn on Low Latency mode (low latency).
3. Use a directional antenna (for stationary devices) or move to a less busy area.

💡

In crowded places (metro, cafes) Bluetooth stability will always be worse because of the large number of active devices.

6. Misconformity of sound settings in MIUI

In the firmware MIUI there are hidden settings that can affect the operation of wireless headphones:

• 🔇 Absolute Volume – If turned on, it can cause distortions of sound.
• 🎛️ Audio codecs – some codecs (e.g. aptX) conflict with budget headphone models.
• 🔄 Autoconnection – if enabled for multiple devices, headphones can “mix up».

How to set up:

1. Turn off Absolute Volume: 1. Turn on Developer Mode: Settings → About Phone → MIUI Version (click 7 times). 2. Return to Settings → Additional → For Developers. 3. Find Turn off Absolute Volume and Activate.
2. Reset Bluetooth settings: 1. Settings → Connections → Bluetooth. 2. Click on the three dots in the upper right corner → Reset settings.

If the problem persists, try manually selecting an audio codec:

1. Put the headphones on.
2. Open Settings → Connections → Bluetooth.
3. Click on the gear next to the headphones name.
4. Select the Audio Codec → SBC (most compatible, but with less quality).

7.When the case is to blame: charging and synchronization problems

The headphone case is not just a case, it's a charger synchronizing device, and if it's damaged, the headphones can:

• 🔋 Do not charge or charge only in a certain position.
• 🔄 Not synchronizing with each other (one earphone is not connected).
• 🔌 Disconnect when opening/closing the case cover.

How to diagnose:

1. Check if the charging indicator on the case is lit when connecting to the USB.
2. Try charging the case from another power supply (sometimes the cable or adapter is to blame).
3. Look at the magnetic contacts in the case – they must securely fix the headphones.

Decisions:

• 🧲 If the magnets are weakened, replace them (you can buy them in radio parts stores).
• 🔌 If the case is not charged, check it out. USB-port.
• 🔄 If the headphones do not sync, reset the case (hold the button 20 seconds until flashing red).

⚠️ Warning: If the case swells or deforms, stop using it immediately! this is a sign of battery failure that may ignite.

FAQ: Frequent questions about the jamming of headphones Xiaomi