How to find Xiaomi’s second Bluetooth headphone: 7 proven ways to get back a lost module

Losing one headphone from a pair of Xiaomi is a situation familiar to many wireless headsets owners. Even if you are careful about the technology, the small size and lack of wires make AirDots, Buds or FlipBuds easy prey for a sofa, pockets or pets. Fortunately, 90% of the time the lost module is within a radius of 10 meters from you - it just needs to be properly "call".

In this article, we will look at all the working methods of search, from basic (check Bluetooth connection) to advanced (use of hidden MIUI functions and third-party applications). Particular attention will be paid to models that support Mi TrueWireless Stereo technology, where headphones can switch to the role of lead / follower. If your earphone is discharged or turned off, we have a solution for this case.

Importantly, the search algorithms differ from Xiaomi to product line, for example, Redmi AirDots 3 Pro will be suitable for the reset method through a button, and Xiaomi Buds 4 will require a proprietary application Mi Earphones. We will describe in detail the nuances for each series.

1. Checking the basic Bluetooth connection: the first step

Before you go looking, make sure that the problem is not a software failure. Often the earphone is lost due to pairing error, not physical loss.

• 📱 Open Bluetooth settings on your smartphone (even if the headphones were previously connected).
• 🔍 Find your Xiaomi model on the list – it can show up as “Mi True Wireless”, “Redmi Buds” or with the model listed.
• 🔄 Forget the device (click on the basket icon or “Disable”) and reconnect both headphones.
• 🎧 Check the sound: if one earphone is silent, and the other plays music – the problem is in synchronization of the pair.

If the lost earphone does not appear in the list, it can mean:

• ⚡ It is discharged (the battery sat below 5%).
• 🔇 Hand-off (e.g., long button retention).
• 📡 Out of range of Bluetooth (more than 10 meters).
• 💥 Hardware failure (damaged communication module).

If the headphone does not respond to the connection, move on to the next step - forced synchronization through the reset button.

Forced synchronization: reset button on the body

Most Xiaomi models (except for the Buds 4 Pro and the latest versions) have a hidden reset button on the headphone case, which is needed to restore the connection between the pair modules.

Put both earphones in the case and close the lid | Make sure the case is charged (indicator is on) | Press and hold the button on the case for 15-20 seconds (until red/white flashes) | Pull the headphones - they should automatically sync-->

For different models, the location of the button and the retention time are different:

⚠️ Warning: If the headphones are not synchronized after reset, and the case is lit red indicator - this is a sign of a discharged battery of one of the modules. Connect the case to charge for 30 minutes and repeat the procedure.

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If the reset button doesn't respond, try cleaning the case contacts with a cotton swab dipped in alcohol. Oxidation of metal sites is a common cause of problems.

3.Search through the Mi Earphones branded app

For models Xiaomi Buds 3/4, FlipBuds Pro and some versions of Redmi AirDots, there is an official application Mi Earphones (formerly Mi Headset) that not only adjusts the sound, but also helps to find the lost earphone through the function “Search for a device”.

How it works:

1. Download Mi Earphones from Google Play or App Store.
2. Connect the remaining headphone to the phone.
3. Open the application → section “Device” → “Finding the headphone”.
4. Click “Start Search” – the app will show the last known location (if the headphone was connected earlier) and try to send an audible signal.

Limitations of the method:

• 📵 It only works if the headphone is on and within Bluetooth range.
• 📍 Accuracy of location — ±5 meters (may point to a nearby room).
• 🔇 Some models (Redmi Buds 3 Lite) do not have a search function.

If the app doesn’t find the headphone, try alternative programs like Find My Headset or Bluetooth Scanner (which are discussed in the next section).

4. Bluetooth scanners: how to find the headphone on MAC-address

If the proprietary methods didn't work, you can use specialised Bluetooth scanners, which show all devices in range, including invisible headphones.

• 🔍 nRF Connect (Android/iOS) — show MAC-address, signal level (RSSI) device model.
• 📡 Bluetooth Scanner (Android) – plots signal strength to search in the direction.
• 📲 LightBlue (iOS) – supports connection to hidden devices.

Step-by-step:

1. Install one of the apps and turn on Bluetooth on your phone.
2. Run the scan - look for a device in the list called Mi_TWS_... or Redmi_Buds_....
3. Pay attention to RSSI (signal level): the closer to 0 dBm, the closer the headphone is.
4. Move around the room, watching the changes in RSSI – this is how you can calculate the direction.

⚠️ Note: If a device with a scanner appears in the scanner list MAC-address, but you can't connect to it - this can mean that the earphone is in standby mode (for example, it is in a case with the cover closed.

5.Physical Search: Where to Look for a Lost Headphone

If the software methods didn't work, it's time to do a system survey of the possible locations, and statistically, 70 percent of the headphones are within 3 meters of the last place you're going to use.

• 🛋️ Sofa/chair - check under pillows, in the gaps between back and seat.
• 👖 Clothing – pockets of jackets, jeans, bags (especially if the headphone is small, like Redmi AirDots 3).
• 🐕 Pets – Dogs and cats often play with small objects.
• 🚗 The car - under the seats, in the glove compartment, between the seats.
• 🧺 Bed – the headphone could fall under the mattress or in the folds of the blanket.

Tips for effective search:

• Use a flashlight – many models (Xiaomi Buds 4) have a glossy body that reflects light.
• Check the trash can (especially if the headphone is white – it is easy not to notice in the background of the packages).
• If there are children in the house, check out play areas – headphones are often used as “toys.”

💡 Useful life hack: Take a vacuum cleaner with a furniture nozzle and walk through the sofa/chair at minimum power.Vibration and airflow can "push" the earbud out of the slits.

6. If the headphone is not turned on: diagnosis and repair

If you find an earphone but it doesn’t respond to charging or buttons, the problem may be:

• 🔋 Recharged battery - leave on charging 1-2 hour.
• 💧 When you get moisture – dry for 24 hours in rice or silica gel.
• 🔌 Oxidized contacts - clean with alcohol.
• 💥 Damaged boards - will need repairs.

How to check the efficiency:

1. Put the earpiece in the case and close the lid. The indicator should flash red (charge) or green (full charge).
2. If the indicator is not on, try another cable/charger.
3. Press and hold the touchpad on the earphone for 10 seconds, and it should sound a signal or a voice message.

⚠️ Note: If the Xiaomi headphone after falling, it is beeping without stopping or warming - this is a sign of short circuit. It is dangerous to use it (risk of fire of the lithium-ion battery.

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If the headphone doesn't turn on after all the manipulations, but it looks like it's a problem in the Bluetooth chip, and it costs 30-50% of the cost of new headphones, so it's often more profitable to buy a new pair.

7. Purchase of replacement: original vs. analogues

If the search is unsuccessful, there are two options:

1. Buy an original headphone (for a couple only).
2. Buy a new pair (often cheaper).

Where to look for the original headphone:

• 🛒 Xiaomi’s official service is a guarantee of compatibility, but a high price (up to 70% of the new pair).
• 🌍 AliExpress – search for “Xiaomi [model] single earbud” but run the risk of running into a fake.

Tips for buying:

• Note the Bluetooth version (e.g. Redmi AirDots 3 comes with Bluetooth 5.0 and 5.2 – they are incompatible!).

💰 Economic feasibility: Replacing one headphone Xiaomi Buds 4 Pro will cost in the future ~3 000 ₽, while the new couple is standing ~5 000 ₽. For budget models (Redmi AirDots 2) the difference is minimal – it is easier to buy new ones.

FAQ: Frequent questions about finding Xiaomi headphones