TWS Pairing Issues? 5 Common Fixes When One Earbud Stops Working

You put both earbuds in your ears, start playing music and realise that sound is coming from only one side. Before assuming that the silent earbud is broken, try a few simple troubleshooting measures. In many cases, the problem is caused by an incomplete charge, dirty charging contacts, an incorrect Bluetooth connection, old firmware or a temporary pairing error.

The exact controls and reset process can differ between brands and models, so always check your earbud manual or the manufacturer’s support page when needed. If you are also comparing specifications, comfort, battery life, and sound quality, read our complete earbuds buying guide in Bangladesh.

Why Is Only One Earbud Working?

Many TWS earbuds work together as a synchronized pair. Depending on the model, one earbud may temporarily manage part of the Bluetooth connection, or both earbuds may communicate more independently.

When synchronization between the earbuds is interrupted, one side may stop producing sound even though your phone still shows that the earbuds are connected.

Common causes include:

• One earbud not charging properly

• Dirt or oxidation on the charging contacts

• A temporary Bluetooth pairing error

• One earbud having a much lower battery level

• Blocked speaker mesh

• Obsolete firmware

• Incorrect left and right audio-balance settings

•  Physical damage or battery failure

Before You Start Troubleshooting

Before resetting your earbuds, complete these basic checks:

1. Place both earbuds inside the charging case.

2. Confirm that the case has enough battery power.

3. Check whether both earbuds display a charging light or charging indicator.

4. Turn off Bluetooth on other nearby devices that previously connected to the earbuds.

5. Charge both earbuds for at least 20–30 minutes.

6. Check your phone’s left and right audio-balance settings.

Resetting removes the saved pairing information, so it is better to try the simpler steps first.

Quick Diagnosis Guide

Fix 1: Check the Battery and Charging Connection

The first step is to confirm that both earbuds are actually charging.

One earbud may not sit correctly inside the case, especially if dust or pocket lint is blocking the charging contacts. The earbud may appear to be stored in the case without receiving any power.

Place both earbuds inside the case and check whether each side displays a charging indicator. Some companion apps also show the individual battery percentage for the left and right earbuds.

When one side has a much lower charge, leave both earbuds in the case until they are fully charged before trying the next step.

Battery usage may differ slightly between the two earbuds because of microphone use, calls, noise cancellation, touch controls or the way the model manages its Bluetooth connection. However, a large and repeated difference may indicate a charging-contact or battery problem.

For more advice on charging habits, storage, and battery health, read our guide on how to extend your earbud battery life.

Fix 2: Clean the Charging Contacts and Speaker Mesh

Dirty charging contacts are one of the most common reasons an earbud fails to charge.

Check the small metal contacts on:

• The bottom of each earbud

• The charging pins inside the case

• The area around the speaker mesh

Use a clean, dry cotton swab or a soft-bristled brush to remove dust, lint or debris.

Do not use sharp metal objects because they may scratch or damage the charging contacts. Avoid pouring cleaning liquid directly onto the earbuds or inside the case.

Use isopropyl alcohol only when the manufacturer’s cleaning instructions allow it. Apply a very small amount to the cleaning swab and make sure everything is completely dry before charging the earbuds again.

If one side sounds quieter rather than completely silent, follow our complete guide on how to clean your earbuds safely.

Fix 3: Forget and Re-Pair the Earbuds

Your phone may have saved an incomplete or corrupted Bluetooth connection.

To create a fresh connection:

1. Open the Bluetooth settings on your phone.

2. Find the name of your earbuds.

3. Select Forget, Remove or Unpair.

4. Turn Bluetooth off for approximately 10 seconds.

5. Place both earbuds inside the charging case.

6. Close the case for approximately 10 seconds.

7. Open the case and activate pairing mode.

8. Turn Bluetooth back on.

9. Select the earbuds from the available-device list.

Pair the earbuds according to the manufacturer’s instructions. Many models should appear as one Bluetooth device, while some also support independent single-earbud use. Do not repeatedly connect to separate left and right device names unless the manual specifically tells you to do so.

Connection stability can also depend on the Bluetooth version supported by your phone and earbuds. Learn the practical differences between Bluetooth 5.0 and Bluetooth 5.3.

Fix 4: Reset the Earbuds

When charging and re-pairing do not solve the problem, perform a factory reset.

Reset instructions are not the same for every model. Depending on the earbuds, you may need to:

• Hold a button on the charging case

• Press both earbuds while they are inside the case

• Remove the earbuds and hold both touch controls

• Use a reset option inside the companion app

The required holding time can also vary. Some earbuds reset after approximately 8–10 seconds, while others require a longer press.

Check the product manual, official support page or manufacturer’s app for the correct instructions.

After resetting:

1. Forget the old Bluetooth link on your phone

2. Restart Bluetooth.

3. Place both earbuds inside the case.

4. Activate pairing mode.

5. Connect them as a new device.

Do not reset these earbuds multiple times without knowing the specific process for that model.

Fix 5: Update the Firmware

Firmware updates can fix connection errors, synchronization problems and other software bugs.

Many earbuds from brands such as Haylou, QCY, Soundcore, Baseus, Xiaomi and Redmi support companion apps. However, app availability depends on the exact model.

Open the official app and look for:

Firmware updates

• Left and right earbud status

• Battery levels

• Touch-control settings

•  In-ear detection settings

•  Audio-balance or sound settings

Keep both earbuds charged and connected during an update. Do not remove them from the case or close the app unless the manufacturer’s instructions say it is safe.

After updating, restart the earbuds and test them again. Firmware and app support vary considerably between brands. See our QCY vs Oraimo vs CMF comparison for a closer look at app features, updates, sound quality, ANC, and value.

Check Your Phone’s Audio-Balance Settings

Sometimes the earbuds are working correctly, but the phone is sending most or all audio to one side.

On many phones, the setting is found under:

Settings → Accessibility → Audio or Hearing → Left/Right Balance

Centering the balance slider: Ensure it is in the middle.

You should also temporarily disable:

• Mono audio

• Custom hearing profiles

• Third-party equalizer apps

•  Sound-enhancement applications

• Automatic ear-detection features

The exact setting names will depend on the device and operating system.

Test the Earbuds With Another Device

Connect the earbuds to another phone, tablet or computer.

If both earbuds work correctly with another device, the problem is probably related to your original phone’s Bluetooth settings, audio settings or software.

When the same earbud remains silent on every device, the issue is more likely to involve charging, firmware, battery condition or hardware.

How to Tell if It May Be a Hardware Problem

Consider a possible hardware problem only after you have:

• Fully charged both earbuds

• Cleaned the charging contacts

• Checked the speaker mesh

• Forgotten and re-paired the device

• Completed the correct factory reset

• Updated the firmware

• Tested the earbuds with another device

Signs that may indicate hardware failure include:

• The earbud never shows a light or charging indicator

• The charging contacts are visibly damaged or corroded

• The earbud becomes unusually hot

•  Audio crackles no matter the distance to a Bluetooth device

• The battery drains immediately after charging

• The earbud does not respond to touch controls or buttons

• The same side remains silent on multiple devices

Do not open the earbud or attempt to repair its internal battery at home. TWS earbuds contain small lithium batteries that can be damaged by improper handling.

Check the warranty terms or contact a qualified repair centre instead.

How to Prevent Future TWS Pairing Problems

You cannot prevent every Bluetooth issue, but these habits may reduce recurring problems:

• Keep the charging contacts clean.

• Store both earbuds inside the case when they are not being used.

• Avoid allowing the case and earbuds to remain completely discharged for long periods.

• Install official firmware updates when available.

• Keep the earbuds away from excessive heat and moisture.

• Follow the manufacturer’s pairing instructions.

• Avoid pairing the earbuds with too many devices at the same time.

• Clean the speaker mesh regularly.

• Use a protective case when carrying the earbuds in a bag or pocket.

  
  

For exercise and outdoor use, check our guide to earbud IPX ratings before choosing a water- or sweat-resistant model.

Common Earbud Problems and Solutions

To understand how Bluetooth audio affects delay and sound quality, read our guide to SBC, AAC, aptX and LDAC codecs.

When Should You Replace Your Earbuds?

Recurring connection problems do not always mean that you need a new pair.

Replacement may be reasonable when:

• no longer get any sensible charge out of the earbuds

• One side repeatedly stops working after troubleshooting

• The charging case or pins are physically damaged

• Firmware updates are no longer available

• Repair costs are close to the cost of replacement

• The earbuds are outside the warranty period

• You need newer features such as multipoint connection or improved noise cancellation

  
  

When comparing replacements, consider:

• Bluetooth version and connection reliability

• Companion-app and firmware support

• Independent single-earbud mode

• Battery life

• Microphone quality

• Water-resistance rating

• Codec support

• ANC or ENC features

• Warranty period

• Availability of local support

Read our comparison of the difference between ANC and ENC before choosing a replacement based on noise-cancellation claims.

Best TWS Earbuds in Bangladesh for Fewer Pairing Headaches

TWS Earbuds in Bangladesh

If your current pair cannot be repaired, explore the latest TWS earbuds in Bangladesh. Check the individual product page for current price, stock availability, warranty coverage, app compatibility, and delivery information before ordering.