Why Xiaomi does not turn on one headphone: a full analysis of the causes and solutions

Did you pull Xiaomi headphones out of the case, but one of them stubbornly doesn't respond to the connection? TWS-Headphones - from budget Redmi Buds to flagship Xiaomi FlipBuds Pro. 70% of the cases, the malfunction is associated with software failures or improper charging, but sometimes hardware breakdowns are to blame. In this article, we will look at all possible causes of a single headphone shutdown, including rare cases like Bluetooth chip damage, and give clear instructions on diagnosis and repair.

Important: if the headphone is not showing signs of life (the indicator does not blink, does not make sounds when connected), first check it on another device, this will help to cut off problems with the smartphone. And if it connects, but does not reproduce sound, it can be both the software and the hardware, start with the simplest solutions and get to the difficult ones.

1. Checking the underlying causes: battery, connection, case

Before you take out the headphones or reset the settings, eliminate trivial problems. Start with charging: even if the indicator on the case is green, it does not guarantee that both earphones are charged. Take a magnifying glass and check the contacts inside the case — they must be clean, without oxidation or contamination.

And then there's the connection sequence, and many people don't know that Xiaomi has this thing: if you take the right earpiece out of the case first, it becomes the master, and the left earpiece will connect through it. If the order is broken, you can have synchronization failures.

• 🔋 Take both earbuds out of the case and place them side by side for 10 seconds – they should automatically sync.
• 📱 Remove the headphones from the list of Bluetooth devices on your smartphone and connect again, starting from the right one.
• 🔄 Reboot your smartphone – sometimes the Bluetooth driver will “hang” and does not see one of the headphones.

⚠️ Note: if the headphone Xiaomi Air 2 SE or Redmi Buds 3 Pro does not respond to touch panel presses, do not try to disassemble it yourself - in these models, the buttons are integrated into the board, and careless intervention will lead to complete breakdown.

2. Software failures: reset, firmware, conflicts

If the basic diagnostics didn’t help, the problem lies in the firmware or Bluetooth conflicts. Xiaomi headphones work on the basis of the BLE 5.0/5.2 protocol, and sometimes smartphone updates break compatibility. For example, after the release of Android 13, many Redmi Buds 4 users experienced the left earphone shut down after 5 minutes of use.

The first thing you need to do is to reset your headphones to the factory settings, and the methods vary depending on the model.

• 🎧 Xiaomi Air 2/Air 2S: Press the touch panels on both headphones on 15 seconds until the indicators start flashing red and white.
• 🎧 Redmi Buds 3/4: press the button on the case 3 once in a row, then hold on 10 seconds.
• 🎧 FlipBuds Pro: Use the Xiaomi Earbuds app (Section "Reset").

If the reset didn't help, check the firmware version through the official app. For models from 2022-2026, the current versions are:

You can only update your firmware through your app. If it can't see the headphones, try:

1. Install APK-App version with APKCombo (sometimes Google Play issues outdated versions).
2. Connect to headphones via another device (such as an Android 10 tablet).
3. Use the developer mode on the smartphone (includes through 7 clicks on the build number in the settings).

Trying to reset headphones | Checked firmware through Xiaomi Earbuds | Tested on another device | Cleared the Bluetooth cache on a smartphone | Checked charging contacts in the case-->

Hardware breakdowns: speaker, battery, charge

If none of the software methods worked, the problem is hardware. 60 percent of the time, the battery is the lithium polymer battery. TWS-earphones degrade after 1.5-2 years of active use:

• The headphone is turned on, but immediately switches off.
• The indicator flashes red and goes out.
• Charging takes >2 hours, although it used to take 30 minutes.

Check the battery without disassembly using a multimeter (if you have access to contacts) or the application AccuBattery (showing real capacity). Normal voltage for headphones Xiaomi — 3.7-4.2V. If it is below 3.3V, the battery needs to be replaced.

Other common hardware problems:

• 🔊 Disturbed speaker: sound is present, but distorted or silent, often after falling or moisture.
• 📶 Bluetooth antenna break: the headphone connects, but the connection is constantly broken. Typical for Redmi Buds 3 Lite after mechanical stress.
• 🔌 Contact oxidation: green coating on the earphone's legs or inside the case, cleaned with alcohol and cotton swab.

⚠️ Note: If the Xiaomi headphone fell into water or was exposed to high humidity (for example, during training), do not dry it with a hairdryer or on a battery - this will accelerate the corrosion of the boards. Use silica gel bags (the ones that are put in shoe boxes) and leave the earphone in them for 24 hours.

Case problems: why one earphone doesn't charge

The case is not just a case, but a charging station with its own power controller, and if one earphone does not charge, it may be the fault:

1. Case contacts: bent or oxidized springs inside nests. In Xiaomi Air 2, they often break after a year of use.
2. Charging controller: If the case does not recognize the earphone, the indicator may burn green, but the current does not go.
3. Case firmware: yes, cases have firmware too! In Redmi Buds 4 Pro, a bug with the 2023 update caused the left earbud to not charge.

How to diagnose:

1. Light a flashlight inside the case nest - contacts should be smooth, without black plaque.
2. Try charging the headphone from another case (if you can borrow from a friend).
3. Connect the case to your PC via USB and check if it is defined as a device (in Device Manager).

If the contacts are damaged, you can bend them neatly with a needle, but this is a temporary solution. Full repair will require a soldering iron and experience with microelectronics. Xiaomi services charge from 800 to 1500 rubles (depending on the model).

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If the case stopped charging the headphones after falling, check the magnets inside the nests. In Xiaomi AirDots, they often peel off, which makes the contacts not touch.

5. Conflicts with other devices and OS

Xiaomi headphones sometimes refuse to work due to conflicts with other Bluetooth devices or operating system features.

• 📱 On iOS (iPhone), headphones can only connect in mode AAC, resulting in communication breakdowns.
• 💻 Windows. 10/11 Qualcomm Atheros driver often "gluts" with TWS-headphone.
• 🎮 On PlayStation 5 or Xbox Series X, Xiaomi headphones are not officially supported – sound will only be in mono mode.

Solutions for different platforms:

A special case is a conflict with a smartwatch (e.g. Xiaomi Mi Band or Amazfit) if it's connected to the same smartphone, try turning it off during the test, and check if Low Power Bluetooth is enabled in the battery settings.

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If the headphone works normally on one device, but does not connect to another – the problem is not in it, but in the settings of the smartphone / PC.

6. When to contact the service: prices and warranty

If you have tried all methods, but one headphone Xiaomi still does not turn on, it is time to contact the service.

Please note the warranty conditions:

• 📄 Official warranty Xiaomi in Russia – 12 months from the date of purchase.
• 🚫 The warranty does not apply to mechanical damage (cracks, dents) and fluid ingestion.
• 🔧 If headphones were bought in AliExpress or other foreign stores, warranty repair is possible only through them (contact the seller).

Before the service visit:

1. Take a picture of the check (or find an electronic copy in the mail).
2. Reset your headphones to factory settings (this is required in 90% of services).
3. Check if they have original parts for your model (especially important for the FlipBuds Pro and Buds 4 Pro).

⚠️ Attention: informal services often install cheap analogues of speakers or batteries that fail after 2-3 months.

7. Alternative solutions: what to do if repair is not advisable

If the repair costs more than 50% of the price of new headphones, it makes sense to consider alternatives:

• 🎁 Exchange program Trade-In: Xiaomi and some stores (for example, the Messenger) accept old headphones in the account of the purchase of new.
• 🔧 Self-repair: AliExpress sells remixes (batteries, speakers) for popular models.
• ♻️ Recycling with a bonus: some services (for example, Eldorado) give a discount on new equipment when passing the old one.

If you decide to buy new headphones, pay attention to models with moisture protection (for example, Xiaomi Buds 4 Pro with IP54) and an extended warranty (in some stores it can be increased to 24 months).

For those who want to try to fix the headphones themselves, useful resources:

• 📺 YouTube channel "Repair Xiaomi" - analysis of popular models.
• 🛠️ 4PDA — thread-theme.
• 📖 MIUI SU — discharge and renewal instructions.

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Before buying new headphones, check them on GSM Arena – there is data on supported codecs (aptX, LDAC) and battery life.

FAQ: Frequent questions about Xiaomi headphones that don't work