Xiaomi Mi True Wireless Earphones 2 (codename) TWS2) They have gained popularity due to the balance of price and quality, but even they are not immune to the typical problems. TWS-One of the most common problems is when one earphone, left or right, stops working, and it's familiar to many people, because the sound is only on one side, the earphone is not connected to the phone, or it shuts down quickly. In 80% of cases, the problem is solved independently, but for this you need to accurately diagnose the cause.
In this article, we will look at all possible causes, from simple battery discharge to hardware breakdowns, and give step-by-step instructions for troubleshooting. We will focus on the hidden Bluetooth settings in MIUI, which are often ignored in standard guides. If you have tried reconnecting your headphones and this has not helped, read on: there is a solution.
1. Checking the underlying causes: battery, connection, physical damage
Start with the obvious. In 30 percent of cases, the problem is trivial things that users don't pay attention to. Here's a checklist for initial diagnosis:
- 🔋 Headphone and case charge. Check the indicator on the case: if it flashes red or doesn't burn at all, the headphones are discharged. Connect the case to charging for 10-15 minutes and try again.
- 🔗 Make sure the headphones are connected as a stereo (Mi True Wireless Earphones) 2), Not as two separate devices (Mi True Wireless Earphones) 2_L Mi True Wireless Earphones 2_R).
- 🎧 Physical damage. Check the earphone for cracks, dents, or moisture. Pay special attention to the charging contacts inside the case, which should be clean and not oxidized.
- 🔊 Sound balance: In your smartphone's sound settings, check if the left/right balance is lost. MIUI: Settings → Sound. → Headphone balance).
If the earphone is plugged in but no sound, try to wipe the speaker with a soft brush, sometimes caused by a buildup of earwax or dust. Use a cotton swab dipped in alcohol (at least 70%) to clean the contacts.
⚠️ Warning: Do not use metal objects to clean contacts! this can damage the coating and disrupt conductivity.
2. Resetting headphone settings: step-by-step instructions
If the basic check didn’t work, the next step is to reset the headphones completely, which will bring them back to factory settings and often solve connection or sound problems, and is valid for all Mi True Wireless Earphones 2 revisions (including the TWS2 Basic and TWS2 Pro).
Here's how to do a reset:
- Place both headphones in the case and close the lid.
- Wait 5 seconds, then hold the button on the case (located at the back) for 15-20 seconds until the indicator starts flashing red and white.
- Open the case cover - the headphones will automatically go into pairing mode (the indicators will flash alternately).
- On your phone, remove your headphones from the list of associated devices (Settings → Bluetooth → Mi True Wireless Earphones 2 → Forget the device).
- Connect the headphones again through standard Bluetooth search.
After reset, the headphones may require a firmware update. To check the relevance of the software, use the official Mi Home app (Section Profile → My Devices → Mi True Wireless Earphones 2 → Firmware Update).
Make sure the case is at least 30% charged |
Remove the headphones from the ears and place them in the case |
Close the case cover for 5 seconds |
Prepare a smartphone for re-conjugation-->
3. Bluetooth problems: smartphone settings and conflicts
Often, the headphone itself is not the fault, but the incorrect Bluetooth settings on the smartphone, especially for devices on MIUI, where there are hidden parameters that affect the operation of TWS. Consider typical scenarios:
- 📱 Conflict with other devices: If the headphones have previously connected to another phone or PC, they may freeze in standby mode. Solution: reset (section 2) and connect them to only one device.
- 🔄 Automatic sound switching. MIUI 12+ There's a Quick Device Switch feature that sometimes knocks the connection down. → Connected devices → Headphones → Additionally. → Quick switching.
- 🛠️ Power saving restrictions. Bluetooth may be shut down due to aggressive battery optimization.Add the Mi Home app to exceptions: Settings → Battery → Optimizing the battery → All applications → Mi Home → No restrictions.
- 📶 Interference from other devices: 2.4GHz Wi-Fi routers, microwaves or other wireless gadgets can cause interference. Try using headphones elsewhere.
If the problem only occurs with one smartphone, try connecting the headphones to another device (like a tablet or laptop), and if they work properly, the phone is to blame, not the headphones.
How to Enable Bluetooth Developer Mode in MIUI
4. Hardware malfunctions: what breaks most often
If the software methods didn't work, the problem could be in the hardware. Mi True Wireless Earphones 2 most often fails the following components:
| Component | Signs of malfunction | Possible repairs |
|---|---|---|
| Headphone battery | The headphone discharges quickly, does not hold a charge, turns off after 5-10 minutes | Battery replacement (soldier iron and microelectronics experience required) |
| Dynamic (emitter) | Sound distorted, wheezing, no sound when connected | Replacement of the speaker or cleaning contacts (in 20% of cases, warm-up with a hair dryer helps) |
| Bluetooth antenna | The earphone connects, but the sound is interrupted, the constant breaks of the connection | Antenna soldering or module replacement (in the service center) |
| Charging contacts | The headphone does not charge in the case, flashes red | Cleaning contacts with alcohol or replacing spring contacts in the case |
| Microphone | The person can’t hear you, even though the sound is in the headphones. | Replacing a microphone or cleaning a membrane (a temporary solution is to use only one earphone for conversations) |
The most common hardware problem is the battery contacts collapse, which is due to falls or prolonged use, and if the headphone doesn't turn on at all, try putting a little pressure on the body in the battery area -- if it works, it's the contacts.
⚠️ Attention: Disassembly of headphones deprives you of warranty! If the device is warranty, contact the Xiaomi service center (list of addresses: official website).The cost of repairing one headphone in Russia is from 800 to 1500 rubles (2026).
5. Firmware Update: Why It Matters and How to Do It Right
The firmware of the headphones affects connection stability, sound quality and running time. Mi True Wireless Earphones 2 rarely releases updates, but they are critical to fix bugs. For example, version 1.4.0.9 fixed the problem of spontaneously turning off the left earphone when the charge level is low.
To update the firmware:
- Install the official Mi Home app (version no lower than 6.0).
- Connect the headphones to the phone and open the application.
- Go to Profile. → My devices. → Mi True Wireless Earphones 2.
- If an update is available, an Update button will appear. Press it and wait for the process to be completed (the headphones should be in the case with the lid open!).
If the update doesn’t appear, try:
- 🔄 Reconnect the headphones to another device (for example, on iOS or Android of another brand).
- 📱 Remove the Mi Home app cache (Settings) → Annexes → Mi Home → Warehouse → Clear the cache).
- 🌐 Connect to another Wi-Fi network (sometimes updates are blocked by corporate firewalls).
💡
If after updating the firmware headphones began to work worse (for example, there were clicks in the sound), reset to factory settings (section 2) and repeat the update procedure.
6. Alternative Connection Methods: What to Do When Nothing Helps
If the standard methods didn’t work, try the non-obvious solutions:
- 🎵 Mono mode. Some users have noticed that the earphone starts working when you turn it on in mono mode:
Use of third-party applications
TWS Earphones Checker
Google Play
Connection via PC
Windows
Mac
Case replacement
If the earphone is connected but only sounds on one side, check the audio settings in the app that plays the audio. For example, YouTube Music or Spotify may activate Mono audio mode. → Sound quality).
💡
Before buying a new headphone or case, be sure to check the compatibility model! For example, the case from Mi True Wireless Earphones 2 Basic will not be suitable for the Pro version due to different charging connectors.
7.When to contact the service: signs of serious breakdowns
There are symptoms in which self-repair is impossible or impractical:
- 🔥 The headphone warms up when charging or using - a sign of short circuit in the battery.
- 💧 Liquid intake (even if headphones) IPX4, This does not guarantee protection from sugary drinks or salt water).
- 🔊 Complete absence of sound when connecting (may indicate a break in the speaker circuit).
- 🔋 The headphone is not charged either in the case or through external power (problem with the charging controller).
In these cases, contact the service: Average repair prices (for 2026):
- Replacement of the battery - 600-1200 rubles.
- Replacement of the speaker - 800-1500 rubles.
- Repair of the Bluetooth module - 1500-2500 rubles.
- Cleaning after liquid ingress - 1000-2000 rubles. (without a guarantee of recovery!).
If the headphones are warranty (period - 12 months from the date of purchase), repairs will be free. For the warranty case, a check and a box with components will be required.
- Moscow: Lysa Chaykina St., 1 (in the shopping center "Gorbushkin Dvor").
- St. Petersburg: Marshal Govorov str., 35 (Mi Store store).
- Kazan: Trade Union St., 13 (TC "Ring").
Also check if Automatic Shutdown is activated when inactivity is in your smartphone’s Bluetooth settings.