Xiaomi left earphone doesn't connect? fix in 10 minutes

Did you pull Xiaomi's new wireless headphones out of the box, but the left earphone stubbornly refuses to turn on or connect to the phone? Or suddenly stopped working after the upgrade? This problem is familiar to many owners of Redmi AirDots, Mi True Wireless Earphones and other models, most often due to a failure of synchronization between headphones, battery discharge or software glitch.

In this article, we'll look at 5 working ways to bring your left earbud back to life, from basic checks to hidden functions that aren't mentioned in the official manual. No complicated technique: step-by-step photo actions, warnings about typical errors and answers to frequent questions. If you've tried to reboot your headphones but nothing has worked, don't rush them into service. 90% of the time, the problem is solved on its own in 5-15 minutes.

1. Checking the underlying reasons: why Xiaomi's left-hand earphone isn't turning on

Before digging deep into the settings, rule out obvious faults. Often users spend hours looking for a solution when the problem is in the minutiae:

• 🔋 The left earphone could have discharged faster than the right one (for example, if it was forgotten to take out of the case on the last charge). Check the indicators on the case: if one of the LEDs does not burn or flashes red, the earphone requires recharging.
• 🎧 Mechanical damage. Check the contacts on the headphone and in the case: oxidation, dirt or deformation can block charging.
• 📱 Phone problems. Sometimes the problem is not in the headphones, but in the Bluetooth module of the smartphone. Try connecting the headphones to another device (tablet, laptop).

If the left earphone is still not showing signs of life after charging and cleaning the contacts, then move on to the next step. Note: in Xiaomi Buds 3/4 Pro and Redmi Buds 5 models, with the full discharge of one of the headphones, the case may not show an indication - this is normal. Let me charge for 10-15 minutes before checking.

2.Reset headphones Xiaomi: a universal way to reboot

The most effective way to get the left earbud back up is to reset it to factory settings, which resets all sync settings and often solves connection problems.

Make sure both headphones are in the case

Make sure the cover is at least 30% charged.

Disconnect Headphones from All Devices in Bluetooth Settings

Prepare a paperclip or toothpick for the reset button (if any)

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For reset, perform the following actions:

1. Place both headphones in the case and close the lid.
2. Wait 10 seconds, then open the case.
3. Press and hold the touchpad on both headphones simultaneously for 15-20 seconds (until the indicators start flashing red and white).
4. For models with a physical reset button (such as Redmi AirDots S), press it with a paper clip for 5-7 seconds.
5. Close the case, wait 30 seconds and try to reconnect.

After reset, the headphones will appear on the list of available Bluetooth devices as new. If the left earphone still doesn't turn on, move on to the next method.

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In Xiaomi Buds 4 Pro and later, the reset is done through the Mi Earphones mobile application. Go to Settings → Reset to the factory.

3. firmware update: if the left earphone is turned off after connecting

If the left earphone turns on but immediately turns off or makes a discontinuous sound, the problem may be in outdated firmware. Xiaomi regularly releases updates for its headphones that correct synchronization errors. You can check and update the firmware through the official application:

1. Install the Mi Earphones app (for Android) or Xiaomi Wear (for iOS) from the official store.
2. Connect the headphones to the phone via Bluetooth.
3. Open the app and select your headphone model.
4. Go to the Firmware Update (or Firmware Update) section.
5. If a new version is available, click Update and wait for the process to complete (don’t turn off the headphones!).

Updating the firmware can take up to 10 minutes. Don't interrupt the process even if the headphones stop blinking, that's okay. After upgrading, reset (section 2) and check the left earphone.

4. Manual synchronization of headphones: if they do not work together

Sometimes the left and right earbuds disconnect and stop working in pairs, which happens after a reset, battery drain, or Bluetooth crash, to re-synchronize them:

1. Take both earphones out of the case.
2. Press and hold the touchpad on the right earpiece for 5 seconds until it starts flashing white.
3. For 10 seconds, press and hold the touchpad on the left earphone until it flashes red and white.
4. Place both headphones back in the case and close the lid for 30 seconds.
5. Take them out and try to connect to the phone.

If sync is not working, repeat the process, but this time start with the left earpiece.In Xiaomi Buds 3 Pro and later, sync may require confirmation in the mobile app.

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Once manually synchronized, the headphones can appear on the Bluetooth list as two separate devices. Connect only to the right one - the left one will connect automatically.

5. Hardware Failure Check: When Nothing Helps

If all software methods have been tried, but the left earbud still doesn't turn on, there may be a problem in the hardware.

• 🔌 The headphone does not charge in the case (the indicator does not burn even after an hour of charging).
• 🔊 From the headphone, extraneous noise or crackling when connected.
• 💥 On the body visible traces of falling, denting or moisture.
• 📉 Mi Earphones app doesn't detect left earphone even after reset.

In such cases, self-repair is impossible - you need a diagnosis at the service center, but before you carry the headphones to the workshop, check:

⚠️ Warning: If the headphones were in a wet environment (rain, sweat, steam), do not turn them on immediately. Place them in a dry place for 24 hours - perhaps the contacts have oxidized, and after drying, the performance will recover.

For models with replaceable batteries (such as Redmi AirDots 2), you can try replacing the battery yourself. Video instructions are available on YouTube, but remember: this voids the warranty.

6. Alternative methods: if the standard methods have not worked

In rare cases, non-obvious solutions that are not mentioned in official manuals help, and try these methods if previous steps have failed:

• 📱 Connect to another device. Sometimes the headphones "remember" a faulty connection to one phone. Try connecting them to another smartphone or PC.
• 🔄 Update Bluetooth phone module. On Android go to Settings → System system → Update the software and check the relevance of drivers.
• 🛠️ Using third-party apps: Apps like Bluetooth Auto Connect or Earbuds Battery sometimes help wake up a broken headphone.

For Xiaomi Buds 4 and later, there is a hidden diagnostic feature to activate it:

1. Put the headphones on the phone.
2. Open the Mi Earphones app.
3. Go to Settings → Diagnostics → Equipment Test.
4. Click Headphone Check and follow the instructions on the screen.

If the test results in an error with the E3 or E7 code, this indicates a hardware malfunction of the left earphone.

Frequent questions about Xiaomi’s broken left-hand headphone