TWS Xiaomi Headphones: A Complete 2026 Technology Guide

If you’ve ever been interested in Xiaomi’s wireless headphones, you’ve probably come across the acronym TWS. It's found in model names, specs, and even advertising slogans, but what's really behind these three letters? Why are Redmi AirDots, Xiaomi Buds, or Haylou marketed as the best way to do it "TWS-Headphones, and what better (or worse) are they than classic wired or conventional Bluetooth headsets?

In this article, we will not just decipher the term, but will analyze it. TWS-Xiaomi's headphones are the same as the technology, how it works under the hood, what problems it solves, and why modern wireless headphones would be much less convenient without it. You'll learn which Xiaomi models support True Wireless Stereo, how to distinguish the real one. TWS It's a fake, and why even the brand's budget headphones (like the Redmi Buds 4 Lite) may sound better than some wired ones. TWS And why this technology is safer than it seems.

What is it? TWS in headphones: a simple decoding

TWS (True Wireless Stereo is a wireless audio transmission standard in which the left and right headphones are connected directly, without wires and without a smartphone intermediary. In classic Bluetooth headphones, one of the headphones (usually the right one) connects to the phone, and the second to the first earphone via a wire or via an additional Bluetooth channel. TWS Both headphones are independent and synchronized with each other using a separate protocol.

The technology emerged as a response to the main problem of wireless headphones: sound delay (latency) and disconnection of the connection when moving. In old Bluetooth headsets (before version 5.0), the sound first went to the main headphone, and then to the additional one, which created the effect of "echo" or non-synchronous playback. TWS This solves the problem by allowing both earbuds to receive a signal at the same time.

• 🔹 True – “true” – emphasizes the lack of wires even between headphones.
• 🔹 Wireless – wireless, without cable to the sound source (smartphone, PC).
• 🔹 Stereo – stereo sound when the left and right channels are played separately.

It is important to understand that TWS ≠ Bluetooth. This is an add-on over Bluetooth that optimizes it specifically for headphones. For example, Xiaomi Buds 4 Pro uses Bluetooth 5.3 as the basis, but they implement it. TWS via proprietary protocol LC3 (Low Complexity Communication Codec, which reduces latency to 55 ms, is critical for gaming and video.

How it works TWS Headphones Xiaomi: technical details

To understand why. TWS-Xiaomi headphones sound better and more stable than classic Bluetooth headsets, let's understand their device. Inside every headphone (even the budget Redmi Buds 3 Lite) there is a headphone:

1. The main chip (e.g. Qualcomm) QCC3040 at Xiaomi Buds 3T pro BES 2300 in Haylou GT7), which processes sound and controls the connection.
2. Bluetooth module (usually versions 5.0-5.3) for communication with a smartphone.
3. TWS-module - a separate channel for synchronizing headphones with each other (operates at a frequency of 2.4 GHz, like Wi-Fi).
4. Accelerometer and gyroscope for gesture recognition (e.g. double touch for pause).

When you turn on the headphones, the following happens:

1. Both headphones connect to the phone via Bluetooth (usually via protocol). A2DP sound-wise).
2. The left and right headphones are directly connected to each other. TWS (protocol ESP or LC3).
3. The smartphone sends a sound stream simultaneously to both headphones, rather than sequentially.
4. Headphones synchronize playback to within 1 ms to avoid delay.

This provides key benefits:

Interesting fact: in headphones Xiaomi often uses asymmetrical TWS. This means that one headphone (usually the right one) is the lead and connects to the phone, and the second is the follower, receiving the signal from the first one, which saves battery power. For example, in Redmi Buds 4 Active, the right earphone consumes 10% more energy than the left one.

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If you only have one headphone discharge faster than another, try changing the roles in Bluetooth settings. In some Xiaomi models, this can be done through the Mi Earphones app.>.

Advantages TWS-Xiaomi headphones before the usual

Why? TWS-Xiaomi headphones (such as Buds 3 Pro or Haylou) GT6) Are they supplanting classic wired headsets and even Bluetooth headsets with wires between headphones:

• 🎧 Complete freedom of movement: no wires that cling to clothes or buttons, you can exercise, lie on your side or spin in a chair without being afraid to pull out the earpiece.
• 🔋 Long-term operation: modern models (like Xiaomi Buds 4) keep up to 10 hours on a single charge and up to 30 hours with a case.
• 🎮 Minimum latency: critical for gamers.Redmi Buds 4 Pro only has a 55ms latency (vs. 200ms for older Bluetooth headphones).
• 💧 Protection from moisture: most TWS-Xiaomi headphones have a certificate IP54 or IPX4 (Like Haylou. GT1 XR sweats and rains).
• 🎛️ Easy control: touch panels, support for voice assistants (XiaoAI or Google Assistant).
• 🔊 Sound quality: thanks to codecs AAC and LC3 (In new models, the sound is cleaner than in cheap wired headphones.

But there's a downside.

⚠️ Attention: Cheap TWS-Headphones (especially the non-original Xiaomi from AliExpress) often save on chips, which causes problems: 🔴 The headphones periodically "lose" each other (breaks). TWS-linkage). 🔴 The sound in the left and right earphones is not synchronized (echo effect"). 🔴 Quick discharge of one of the headphones (due to a non-optimized chip).Buy headphones only from official sellers or check for a certificate Mi Authentic.

Comparison. TWS-Xiaomi headphones with other types:

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Main advantage TWS — It's not the absence of wires, it's the synchronous transmission of sound to both earbuds, which is why even the budget Redmi Buds sound better than many wired counterparts.

What Xiaomi models support TWS: line-up

Xiaomi releases TWS-Headphones under several brands: Xiaomi (premium), Redmi (budget), Haylou (sports) and Mi (obsolete models:

1. Xiaomi Buds (premium segment)

• 🎧 Xiaomi Buds 4 Pro – flagship with LC3, delay of 55 ms, ANC and IP54.

2. Redmi AirDots/Buds (budget)

• 🎧 Redmi Buds 4 Active is the cheapest TWS Xiaomi (IPX4, 20 hours with a case).
• 🎧 Redmi Buds 4 Lite is even easier, but with good ergonomics.
• 🎧 Redmi AirDots 3 Pro - with ANC and AAC priced.

3. Haylou (sports)

• 🎧 Haylou Solar Plus – with a solar panel on a case (recharging from light).

How to distinguish the real TWS-Xiaomi headphones from fake? pay attention to:

The presence of the Mi or Redmi logo on the case and headphones|

Supporting documents (guarantee card, instruction in Chinese/English)|

Support for the official Mi Earphone app|

Matching weight and size to the claimed (e.g. Buds 4 Pro weighs 4.3g)|

Availability of a certificate CE or RoHS on the package-->

Should you overpay for flagship models? ANC (For everyday use, Redmi Buds 4 Active is enough - they are 2-3 times cheaper, but cover 80% of needs.

How to connect TWS-Headphones Xiaomi to the phone: step-by-step instructions

Connection TWS-Headphones (for example, Xiaomi Buds 4 or Redmi AirDots 3) to the smartphone is different from conventional Bluetooth headsets:

1. Turn on the headphones: Take them out of the case, they will automatically turn on. If not on, press and hold the touchpad for 3-5 seconds (until the indicator blinks).
2. Activate pairing mode: Most models (Redmi Buds, Haylou) need to touch the sensor twice on both headphones. Xiaomi Buds 4 Pro just open the case cover - automatically pairing will turn on.
3. Connect to the phone: Open the settings → Bluetooth on your smartphone. In the list of devices, find the name of your headphones (e.g. Redmi Buds 4 Lite). Press "Connect." If you request it. PIN, enter 0000.

Check the sync.

• The sound should go to both earphones at the same time. If only one sounds, reset the settings (see next section).

If the headphones are not connected:

For models with application support (Xiaomi Buds 4 Pro, Redmi AirDots 3 Pro), it is recommended to install Mi Earphones.

• 🔧 Set up the equalizer (bass, high frequencies).
• 🔋 View the level of charge of each headphone.
• 🎛️ Reassign gesture control (e.g., triple tapping for voice assistant).
• 🔄 Update the firmware (fixes bugs with connection).

⚠️ Note: If you only have one earpiece on your headphone, it's not always a defect. GT1) The default is Mono. To switch to stereo, double tap the sensor on the broken earphone.

Common problems with TWS-Xiaomi headphones and their solutions

Even the best. TWS-Headphones like the Xiaomi Buds 4 Pro can glitch. Here are the typical problems and ways to fix them:

1.The headphones discharge quickly

Reasons:

• 🔋 Battery worn out (after 300-500 charging cycles, the capacity falls by 20-30%).
• 📱 Constantly connect to your phone in the background (even when the music is off).
• 🔊 Volume at maximum (especially with the switch on) ANC).

Decisions:

• ⚡ Use the original case to charge (unoriginal can damage the battery).
• 🔕 Turn off Bluetooth headphones when not in use.
• 🔧 In Mi Earphones settings, disable Auto Connection".

2.The sound is interrupted or delayed

Reasons:

• 📶 Poor Bluetooth connection (many obstacles between phone and headphones).
• 🎮 Use of the old codec (SBC instead AAC or LC3).
• 📱 Outdated firmware headphones or phone.

Decisions:

• 📱 Move the phone closer to the headphones (in your chest pocket, not in your bag).
• 🔧 In Bluetooth phone settings, select the codec AAC (Android: Settings → Bluetooth → The gear next to the headphones. → Audio codec).
• 🔄 Update your headphones through Mi Earphones.

3. Headphones do not synchronize with each other

This is the most common problem with cheap TWS. How to fix it:

1. Put both headphones in the case and close the lid for 10 seconds.
2. Remove them and hold the sensor on both headphones for 15 seconds (until double blinking).
3. Put it back on the phone.

If it does not help, reset the settings through the button on the case (usually you need to press and hold 10-20 seconds before reset).

4.One earphone is quieter than the other

Reasons:

• 🧹 Clogging speaker (dust, earwax).
• 🔊 Different volume levels in settings (on Android this happens due to the function "Balance of sound").
• 🛠️ Hardware defect (damaged speaker).

Decisions:

• 🧼 Clean the speaker mesh with a soft brush (do not use alcohol-containing liquids!).
• 🔧 Check the sound balance settings on your phone (Settings) → Special facilities → Balance of sound).
• 🔄 Try resetting the headphone settings (see paragraph 3).

⚠️ Attention: If after all the manipulations, the problem remains, check the headphones on another device. If everything is working there, there is a problem in your smartphone (possibly the Bluetooth stack settings have been lost), in this case, resetting the network settings of the phone (Settings) will help. → System system → Reset → Reset Wi-Fi, mobile network and Bluetooth).

Myths about TWS-Headphones: what is true and what is not

Around. TWS-There are many myths that go around with headphones, from "they cause cancer" to "cheap models explode.

Myth 1: "TWS-Headphones are dangerous to health due to radiation"

Reality: Bluetooth headphones are 100 to 1,000 times less powerful than a smartphone. For example, Xiaomi Buds 4 Pro emits 1-2 MW, while a phone is connected to 200 to 1,000 MW. WHO says that Bluetooth radiation is not carcinogenic and does not affect the brain.

In fact, in TWS-headphones radiation is distributed between two devices (rather than concentrated in one, as in wired), which is even safer.

Myth 2: “Cheap ones” TWS-Xiaomi headphones are quickly breaking down"

Reality: Life is not price-dependent, but battery and chip quality. For example, Redmi Buds 4 Lite (about 2000). ₽) If properly operated, they last 2-3 years, as do the flagship models:

• 🔥 Overheating (do not leave headphones in the sun or near the battery).
• 💦 Water intrusion (even if there is water) IPX4, don't swim in them!).
• 🔋 Full discharge (charge when the charge drops below 10%).

Myth 3: "TWS-Headphones sound worse than wired ones"

Reality: Contemporary TWS-Headphones (for example, Xiaomi Buds 4 Pro with a LC3) in terms of sound quality are not inferior to wired in the price range up to 10 000 ₽. In fact, they support:

• 🎶 Active noise cancellation (ANC) — filters low-frequency noise (in the subway, aircraft).
• 🎛️ Equator – setting up bass and high frequencies through the app.
• 🔊 AptX (aptX) – codec for lossless sound (in models with Qualcomm chips).

Wired headphones only win in price (cheap) TWS starting from 1500 ₽, And wired, 300. ₽) latency (in wire delay 0 ms, but this is critical only for professional musicians).

Myth 4: "TWS-headphones are easy to lose"

Reality: Yes, the risk is higher than with wired ones, but Xiaomi has added a few chips to protect:

• 📍 Search function in the Mi Earphones app (earphones make a sound if you get lost at home).
• 🔗 Automatic pause when removed from the ear (in Buds 4 Pro).
• 🛡️ Case with magnets - headphones do not fall out when carrying.

Tip: Link an AirTag or similar tracker to your case if you often lose things.

FAQ: Frequent questions about TWS-Xiaomi headphones