How to sync Xiaomi Mi True Wireless Earphones 2: Full problem-solving instruction

Why Xiaomi Mi True Wireless Earphones 2 are not synced and how to fix it

Xiaomi Mi True Wireless Earphones 2 (TWSEJ04LS model code) is a popular solution for music lovers, but even they sometimes refuse to connect to devices. Synchronization problems can occur for various reasons, from basic Bluetooth failure to hardware malfunctions. In this article, we will analyze all the ways of connecting, from the standard pair to forced resetting, and also consider typical errors and their solutions.

The feature of this model is support for Bluetooth 5.0 protocol and Dual Mic Noise Cancellation technology, but these features sometimes conflict with outdated versions of operating systems. If your headphones stopped automatically connecting after updating your smartphone firmware, the problem lies in the incompatibility of profiles. Next are step-by-step instructions for all scenarios.

Preparation for synchronization: what to check before connecting

Before you start setting up, make sure your device meets the minimum requirements.Mi True Wireless Earphones 2 officially supports:

• 📱 Android 5.0+ (recommended 7.0 and above)
• 🍎 iOS 10.0+ (functionally limited)
• 💻 Windows 10/11 (Bluetooth adapter required 4.2+)
• 🎮 Game consoles (with support only) A2DP)

If your smartphone or PC is older than the above versions, the headphones can connect, but with loss of sound quality or delays.

• 🔋 Headphone charge: the indicator should flash white at low charge. Full discharge blocks synchronization.
• 🔄 Case state: if the indicator on the case does not burn, the case is discharged and cannot initialize the connection.
• 📡 Interference: Other Bluetooth devices (e.g. fitness bracelets) may interfere with the connection.

⚠️ Note: If the headphones have previously been connected to another device, they can automatically try to reconnect with it. In this case, a forced reset is required (instructions in the section below).

Standard smartphone connection (Android/iOS)

The sync process is the same for most devices, but there are nuances for Android and iOS.

1. Take both earphones out of the case. They should automatically turn on (the indicators will flash red and white).
2. On your smartphone, activate Bluetooth in settings or through the notification panel.
3. In the list of available devices, find Mi True Wireless Earphones 2 (or TWSEJ04LS) and tap for connectivity.
4. Confirm pairing if you request it. Android may need to allow access to contacts and media.

On iOS, after you connect, you will receive a notification to support double-clicking to control playback. On Android, additional features (such as Mi AI Assistant) are available only when you install the Mi Home or Xiaomi Wear app.

⚠️ Warning: If only one earphone is running sound after you've connected, it indicates a loss of synchronization between the left and right modules).

Manual synchronization of left and right earphone

One of the most common problems is when one of the headphones (usually the right one) connects to the phone and the other is silent, and this happens because of a failure in the TWS (True Wireless Stereo) protocol.

1. Put both headphones in the case and close the lid for 10 seconds.
2. Pull them out and hold the touchpads on both headphones for 15 seconds until the indicators start flashing red and white alternately.
3. Place the headphones back in the case. In 5 seconds, pull them out - they should automatically sync (the indicators will light up white).
4. Connect to them via Bluetooth as a new device.

If the process doesn’t work, try an alternative method:

• 🔌 Connect the case to charge for 30 minutes (even if the indicator shows charge).
• 🔄 After charging, take out the headphones and hold the touch panels for 20 seconds until double blinking.
• 📱 Remove the device from the list of conjugates in Bluetooth settings and connect again.

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If the headphones still don't sync, try connecting them to another device (like a tablet), sometimes because of the Bluetooth cache on the main gadget.

Resetting headphones to factory settings

If no method works, it's a complete reset, which will remove all the connections that you've saved and bring the headphones back out of the box.

1. Put both headphones in the case and make sure they charge (the indicators burn orange).
2. Press and hold the button on the case (near the indicator) for 20 seconds until the LED flashes red and white.
3. Release the button. The headphones will reset and the case will reset (the indicator will go out and light up again).
4. Take out your headphones and connect to them as a new device.

After the reset, you may need to update the firmware through the Xiaomi Wear app. To check the software version:

1. Connect the headphones to your smartphone.
2. Open Xiaomi Wear → Devices → Mi True Wireless Earphones 2 → Settings → Software Update.
3. If a new version is available, follow the instructions on the screen.

Connection to a PC or laptop (Windows/macOS)

Synchronization with a computer has its nuances. On Windows 10/11:

1. Open Settings → Devices → Bluetooth and other devices.
2. Click Add Add the device → Bluetooth.
3. Select Mi True Wireless Earphones 2 from the list.
4. If the sound is only in one headphone, go to Control Panel → Sound, find the headphones and set the Stereo format.

On macOS:

1. Open System settings → Bluetooth.
2. Hold the connection button on the case for 5 seconds until the headphones appear in the list.
3. After connecting, check the output of sound in System settings → Sound.

Solving rare problems: firmware, hardware failures and service center

If all methods have been tried, but the headphones still don’t work, the problem may lie in:

• 🛠️ Damaged firmware: Try reflashing through Xiaomi Wear or Mi Flash Tool (PC required).
• 🔌 Faulty case: check charging contacts on headphones and in the case (often oxidized).
• 🎧 Hardware defect: If one of the headphones is not turned on or charged, it may be battery or board damage.

To diagnose hardware problems:

1. Try charging headphones from another case (if possible).
2. Check the response to touch touch – if the earphone does not respond to the pressing, this is a sign of breakdown.
3. Connect your headphones to the Xiaomi Wear and check the battery status. If one of the modules is 0%, its battery is discharged or defective.

⚠️ Note: If the headphones have been hit by water or mechanical shocks, do not try to disassemble them yourself - this can lead to a short circuit.In such cases, contact the Xiaomi service center (even if the warranty has expired, repairs can be cheaper than buying new ones).

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If the headphones stop syncing after a fall or contact with fluid, it is almost always a hardware problem. Attempting a software reset will not help here - it requires diagnostics in the service.

Frequently Asked Questions (FAQ)