Xiaomi Mi True Wireless Earphones 2 (code name) TWSEJ02LS) They are still among the most popular. TWS-But many users have problems with the first connection or do not use all the features of the device. In this article, we will analyze not only the basic setting, but also hidden functions, optimization of sound for different genres of music, as well as solving problems - from unstable connection to fast battery discharge.
The feature of this model is the support of the AAC codec (as opposed to the cheaper versions with SBC), which provides better sound quality on iPhones and modern Android smartphones. But to unlock the potential of the headphones, it is not enough to just turn on Bluetooth. You will have to configure the equalizer, activate noise reduction modes (albeit software), and synchronize work with the proprietary application Mi Home or Xiaomi Wear – without this, some of the functions will remain unavailable.
If you've just unpacked your headphones or you've been using them for a while, but you want to improve your experience, this guide will help. We're not going to limit ourselves to standard tips like "turn on Bluetooth," but we're going to dive into the details, from customizing touch controls to firmware through ADB (for advanced users), starting with the most important thing, the right connection.
Preparing for the first connection: what to do before turning on the headphones
Before you press the power button on your headphones, follow a few mandatory steps. This will save you from the typical problems like "no one earphone sees" or "sound interrupted."
First, check the Bluetooth version on your smartphone. Mi True Wireless Earphones 2 supports Bluetooth 5.0, but stable work is only possible with devices on Android 8.0+ or iOS 12+. On older versions, there may be audio delays or connection breaks. You can find out the Bluetooth version from the Settings menu → About Phone → Bluetooth version (the path may differ depending on the firmware).
Second, charge the case to 100%. Even if the indicator shows a partial charge, it can cause failures on the first pairing. 5V/1A (use of powerful adapters on the 18Watt+ It won't speed up charging, but it can shorten battery life. 1.5–2 hours.
- 📱 For Android: Remove all previously connected devices called Mi True Wireless or TWSEJ02LS, avoiding conflict.
- 🍎 For iPhone: Turn off the Automatic audio switch to Settings → Bluetooth, otherwise headphones can spontaneously connect to other Apple devices.
- 🔋 For the case: if the indicator does not burn when connecting to charging, try another cable - the original USB-C Xiaomi often fails after 6-12 months of use.
⚠️ Warning: Do not remove the headphones from the case before the pairing process is complete. If you do this too early, one of the headphones may not connect to the smartphone.
Step-by-step instructions: how to connect headphones to a smartphone
Mi True Wireless Earphones 2 is different from the standard connection of other devices. TWS-It's important to keep the sequence of actions, otherwise the headphones can be defined as two separate devices.
1.Pair mode activation: place both headphones in the case, close the lid and wait 5 seconds. Then open the lid - the indicator on the case should flash white (this means that the headphones are ready to connect). If the indicator is lit red - discharge the case to 0% and recharge.
2.Device search: On your smartphone, turn on Bluetooth and find Mi True Wireless Earphones 2 (or TWSEJ02LS) in the list of available devices. Click on it to pair. If the device does not appear, update the list or restart the phone's Bluetooth module (turn off/on flight mode).
3. Connection Confirmation: After successful pairing, the indicator on the case will light up in blue, and the smartphone will display a notification about the connection. Remove the headphones from the case - they will automatically connect to the phone.
Both headphones removed from the case|The indicator on the case burns blue.|In the smartphone displays the level of charge of headphones|The sound is played synchronously in both headphones.-->
| Problem. | Reason. | Decision |
|---|---|---|
| One earphone is not connected. | Failure of synchronization between headphones | Return both headphones to the case, close the lid for 10 seconds, then reconnect. |
| The sound is interrupted. | Interference from other Bluetooth devices | Turn off other gadgets (fitness bracelets, smart watches) or move to another room |
| Headphones are discharged quickly | High quality sound mode (AAC) is active | Switch to SBC codec in Android Developer Settings |
| Sensor control is not working. | Touch panel contamination | Wash your headphones with an alcohol napkin (do not use abrasive materials) |
⚠️ Note: If the headphones are connected as two separate devices (Mi True Wireless Left and Right), this indicates a hardware failure of the controller.
Setting up touch control: what gestures are supported and how to change them
Mi True Wireless Earphones 2 features touch panels that respond to touch, and the following gestures are supported by default:
- 🎵 Double touch: playback/pause (both headphones) or call voice assistant (right-hand only).
- 🔀 Triple touch: move to the next track (right earphone) or the previous one (left-handed).
- 📞 Holding 2 seconds: Deflection of incoming call (any headphone).
However, you can change these settings through the Mi Home app (for Android) or Xiaomi Wear (for iOS), for example, you can reassign double tap to a Google Assistant or Siri call, and triple tap to volume control.
1. Open the Mi Home app and find your headphones in the list of devices (they should be connected).
2. Go to the Control Settings section (or Touch Controls in English).
3. Select an action for each gesture from the list. The options available are:
- Reproduction/pause
- Next/Previous Track
- Volume +/-
- Calling the voice assistant
- Shutting down the sound
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If the touch panels are triggered too sensitively (for example, when adjusting the earphone in the ear), reduce the force of touch in the application settings or turn off the response to single taps.
On the iPhone, customization functionality is limited — you can only choose whether a double-touch will run Siri or control playback. Advanced settings will require an Android device.
Sound optimization: equalizer, codecs and hidden settings
The sound of Mi True Wireless Earphones 2 is highly dependent on the chosen Bluetooth codec and equalizer settings. By default, the headphones use AAC (on iPhone) or SBC (on most Android devices).
- 🎧 AAC: Best quality for music, but slightly more latency (about 100-150 ms).
- 📡 SBC: It works more stable in the environment of interference, but the sound is less detailed.
To force AAC on Android:
- Activate Developer Mode (7 times click on Build Number in your phone settings).
- Go to Settings → System → For developers → Bluetooth settings.
- Select the Bluetooth Codec and set the AAC.
To fine tune the sound, use the built-in equalizer in Mi Music apps (from Xiaomi) or third-party players like Poweramp.
| Genre of music | Recommended Equalizer settings | Commentary |
|---|---|---|
| Electronics (EDM, House) | Increase 60 Hz (+3 dB) and 16 kHz (+2 dB) | Increases the bass and airiness of high frequencies |
| Hip-hop, rap. | Raise 80–120 Hz (+4 dB), lower 2–4 kHz (–1 dB) | More powerful bass without distortion of voice |
| Classic, Jazz. | Level ASH with a slight rise of 10 kHz (+1 dB) | It keeps the naturalness of the tools. |
How to enable LDAC on Android (unofficial method)
⚠️ Note: When using a codec AAC Android may have artifacts of sound when listening to music in the format FLAC or WAV. In this case, transfer the files to MP3 320 kbit/s or use it SBC.
Problems and Solutions: What to Do When Your Headphones Are Not Working
Even after setting up correctly, Mi True Wireless Earphones 2 can be unstable, and here are some of the most common problems and proven ways to solve them:
1. Headphones are not on or charged
- 🔌 Case not charged: check cable and power supply (required) 5V/1If the indicator is not on, clean the contacts in the case with a cotton swab dipped in alcohol.
- 🔋 Headphones do not charge in the case: remove them, wipe the metal contacts (on the headphones and inside the case) with dry cloth. If the problem remains, try to "reset" the headphones (see next section).
2.The sound is interrupted or delayed
- 📶 Interference from other devices: disable all unnecessary Bluetooth gadgets (fitness bracelets, keyboards). If you have an issue in the office, try using headphones at 2.4 GHz (change the router's Wi-Fi channel to 5 GHz).
- 🎧 Incompatible Codec: Forced Installation SBC in the developer settings (see previous section).
3.The microphone is not working during calls
- 📞 Low microphone volume: In Android, turn on Voice Improvement in Bluetooth settings. On iPhone, go to Settings → Universal access → Audiovisual → Headphone microphone and select Always on.
- 🔇 The interlocutor can not hear you: check if the microphone holes on the headphones are closed (they are located in the lower part of the body).
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If the headphones start to wheez or make extraneous noises, it may indicate moisture. Place them in a silica gel container for 12 to 24 hours. Do not use a hair dryer or heat!
Resetting and Flashing: When Needed
If standard methods don't work, you might need a full headphone reset or even a flashing, which is an extreme measure, but it often solves problems with synchronization, sound or connectivity.
How to reset headphones to factory settings:
- Place both headphones in the case and close the lid.
- Press and hold the button on the case for 15 seconds until the indicator flashes red and white.
- Open the case cover - the headphones will automatically go into pairing mode.
If the reset didn’t help and the headphones are still unstable, you can try updating the firmware through ADB. This method is only suitable for power users and requires an Android smartphone with root rights or an unlocked bootloader.
Instructions for firmware through ADB
Official firmware for Mi True Wireless Earphones 2 is rarely laid out, but sometimes they solve problems with:
- 🔊 Unstable sound in the left/right headphone.
- 🔋 Quick battery discharge (if the problem is not the battery).
- 🎵 Lack of support for new codecs (e.g, LC3 Android 13+).
Compatible with other devices: PC, Mac, Smart TV
Mi True Wireless Earphones 2 can be connected to smartphones as well as other gadgets, but there are nuances that you should know about in advance.
Connecting to Windows 10/11
1. Turn on Bluetooth on your PC and put the headphones in pairing mode (see Section 2).
2. From the Settings menu → Devices → Bluetooth, select Mi True Wireless Earphones 2.
3. After connecting, go to Control Panel → Sound and set the default format to 16-bit, 44100 Hz (for AAC).
⚠️ Warning: On Windows, headphones can be defined as Headset instead of Headphones. To fix this, remove the device and plug it back in by manually selecting a profile. A2DP.
Connection to MacBook or iMac
On macOS, the process is simpler:
- Open System settings → Bluetooth.
- Click Connect next to Mi True Wireless Earphones 2.
- In the audio menu (System settings → Sound), select the headphones as the output device.
To improve sound quality, install the ToothFairy app, which allows you to quickly switch between devices and force AAC activation.
Connect to Smart TV (Android TV, Samsung, LG)
Most modern TVs support Bluetooth, but there are limitations:
- 📺 Android TV: Connection is possible, but there will be a delay in sound (~200 ms. Use SBC lag-minimizing.
- 🍎 Samsung/LG: Headphones will connect, but the microphone will not work (limiting firmware) TV).
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To watch movies with headphones on Smart TV, turn on the lip/sound sync option in your TV sound settings (if available) and set the delay to 150–200 ms.