How to sync Xiaomi Bluetooth headphones with each other: full instruction with problem solving

Xiaomi wireless headphones are some of the most popular on the market due to the combination of price, sound quality and functionality. However, many users face the problem: after buying or resetting the settings, the left and right earphones stop syncing with each other, emit different sounds or do not connect to the phone at all. In this article, we will analyze all the current ways to synchronize Xiaomi headphones (including Redmi Buds, Mi True Wireless, Buds 4/5 Pro and others), as well as solve typical problems such as the lack of sound in one earphone or constant connection breaks.

It's important to understand that the synchronization process depends on the headphone model and the firmware version. For example, Xiaomi Buds 3T Pro supports automatic synchronization on the first turn on, whereas Redmi AirDots may require manual reset. We'll look at universal methods, as well as nuances for specific lines. If your headphones are not defined by your phone or emit intermittent sound, here you will find a solution.

Why Xiaomi headphones do not sync with each other: the main reasons

Problems with synchronization TWS-Xiaomi’s True Wireless Stereo is usually associated with one of the following factors:

• 🔋 A discharged battery in one of the headphones (even if the indicator is on, the charge can be critically low).
• 📱 Outdated firmware headphones or smartphones (especially relevant for models older than 2021).
• 🔄 Couple failure after incorrect extraction from case or forced Bluetooth shutdown.
• 🎧 Hardware defect of one of the headphones (for example, damage to contacts in the case).
• 📡 Interference from other devices (Wi-Fi routers, microwaves, other Bluetooth gadgets).

Most often, the problem is solved by resetting or forced resynchronization, but before you start taking action, check the obvious points:

⚠️ Note: If one of the Xiaomi headphones does not respond to button presses and does not charge in the case, the problem may be oxidized contacts or damaged battery.

Also, it is worth considering that some models (for example, Xiaomi FlipBuds Pro) require firmware updates through the Mi Home app to work correctly stereo mode. Without this, the headphones can connect separately, but not together.

Method 1: Automatic synchronization at first connection

Most modern Xiaomi models (e.g. Buds 4 Pro, Buds 5, Redmi Buds 5) support automatic synchronization when first turned on.

1. Take both headphones out of the case and wait until they flash white/red at the same time.
2. Activate Bluetooth on your smartphone and find the device in the list (usually called Mi True Wireless... or Redmi Buds...).
3. Connect to the headphones. If the sync is successful, the phone will display the status "Connected to media audio".

If the headphones are not synchronized automatically:

• 🔄 Return them to the case, close the lid for 10 seconds, then pull them out again.
• 📱 Reboot Bluetooth on your phone (turn off/on the module in the settings).
• 🔋 Make sure the charge of the case and headphones exceeds 30% (at low charge, synchronization may not work).

Important: Headphones Xiaomi Buds 3 and later require for the first synchronization of the application Mi Home (Android) or Mi Fitness (iOS).

Method 2: Manual pairing through resetting settings

If the automatic sync doesn't work, you'll have to reset your headphones hard, and the instructions vary depending on the model.

After discharge:

1. Return the headphones to the case and close the lid for 10 seconds.
2. Take them out and wait for the synchronization (the indicators should flash at the same time).
3. Connect to them via Bluetooth on your phone.

Make sure the case is over 50% charged |

Check that the headphones are clean (no dirt on the contacts)|

Turn off Bluetooth on other devices nearby |

Close all apps that use audio (Spotify, YouTube, etc.)

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⚠️ Note: Xiaomi Mi True Wireless Earphones 2 Basic headphones do not support manual synchronization. If they are disconnected, only a complete flashing through the service center will help.

Method 3: Sync with Mi Home/Mi Fitness

For Buds 4 Pro, Buds 5 and later, Xiaomi recommends using proprietary customization apps.

1. Download and install: 📱 Mi Home (Android) or Mi Fitness (iOS). 🔄 Update the app to the latest version (older versions may not support new models).

Devices → Add device (+) → Headphones

Take the headphones out of the case and follow the instructions on the screen.

Headphone settings → Synchronization

The annex may also include:

• 🔄 Update the firmware of headphones (critical for models 2022-2026).
• 🎛️ Set up touch control (for example, turn on/off the noise emitter for synchronization).
• 📊 Check the charge level of each headphone separately.

💡

If the Mi Home app doesn’t find headphones, try temporarily disabling the VPN or changing the region in the app settings to “China” (mainland).

For Redmi Buds 4 Lite and older, the “Reset to factory settings” option is available in the app, which often solves synchronization problems.

Problem Solving: One earphone is not working or is shutting down

If one earphone is not making a sound after synchronization or is permanently switched off, try the following steps:

1. Checking the sound balance

Sometimes the problem lies in the settings of the smartphone:

1. On Android: go to Settings → Special Features → Audio → L/R Balance and make sure the slider is in the middle.
2. On iPhone: open Settings → Universal Access → Audiovisual Content → Balance.

2. Clearing the case contacts

Oxidized or contaminated contacts can prevent charging one of the headphones, which leads to loss of synchronization.

3. Forced reconnection

If the headphones are connected separately, but not together:

1. Forget the device in your phone's Bluetooth settings.
2. Reset the headphones (see Method 2).
3. Connect again, waiting for both headphones to blink at the same time.

Update firmware for stable synchronization

Many problems with connection breaks or lack of sound in one earphone are solved by updating the firmware.

For Android (Mi Home app):

1. Put the headphones on the phone.
2. Open Mi Home, find your headphones in the list of devices.
3. Go to the device settings → Update the firmware.
4. If a new version is available, click Update and wait until it is completed (don’t turn off Bluetooth!).

For iPhone (Mi Fitness app):

The firmware update function may be limited, in which case:

1. Temporarily use your Android device to update.
2. Or contact Xiaomi Service Center (update via PC is only possible for some models).

After the update:

• 🔄 Reboot the headphones (put it back in the case and pull it out again).
• 📱 Reconnect them to the phone.
• 🎧 Check sync in stereo mode (for example, turn on music).

💡

The firmware update is especially important for Xiaomi Buds 3/4 Pro models – there was an error in older versions that caused the headphones to lose communication when talking on the phone.

Frequent Mistakes and How to Avoid Them

Many users make mistakes that lead to synchronization problems.

• 🚫 Remove headphones from the case one by one - this can knock down the pairing process.
• 🚫 Connect headphones to multiple devices at the same time (for example, to a phone and laptop).
• 🚫 Interrupt firmware updates - this can lead to "bricking" headphones.
• 🚫 Use non-original case chargers (especially high-current chargers).

Also avoid:

• 🌡️ Overheating or overcooling of headphones (for example, leaving them in the sun or in the cold).
• 💦 Moisture on case contacts (even if the model has protection) IP54).
• 🔋 Full case discharge (keep the charge at 20-80% for battery durability).

⚠️ Note: If you use Xiaomi headphones with a non-original case (for example, after replacement), the synchronization may not work due to the lack of a pairing chip, TWS Toolbox for Android).

FAQ: Answers to Frequent Questions