How Xiaomi AirDots Headphones Work 2: Technical Nuances and Hidden Opportunities

Xiaomi AirDots 2 wireless headphones (also known as Mi True Wireless Earbuds 2 Basic) have become one of the brand’s most popular accessories thanks to a combination of affordable prices and modern technology. These headphones, released in 2019, are still relevant for many users, especially with the constant rise in prices for analogues from other manufacturers. But how exactly do they work? What lies behind their compact design and what technical solutions provide stable connection and quality sound?

In this article, we’ll take you through AirDots 2 at the hardware and software level, from Bluetooth 5.0 protocols to noise reduction algorithms, gesture control to case charging features, and learn why headphones sometimes “lose” connection to your phone, how to sync them correctly, and what to do if one of the headphones stops working, and also uncover a few hidden features that aren’t mentioned in the official manual, but can greatly improve the experience.

If you’re just planning a purchase or have experienced some problems with your use, this guide will help you understand all the nuances, starting with the most important thing: how the headphones interact with your smartphone and what happens under the hood when you play music.

Bluetooth 5.0 Technology: How to Provide a Stable Connection

Xiaomi AirDots 2 features Bluetooth 5.0, which is a significant step up from the previous version (4.2). The main difference is increased bandwidth and reduced power consumption, which is critical for wireless headphones. But how does it work in practice?

Bluetooth 5.0 in AirDots 2 uses LE Audio (Low Energy Audio), a protocol optimized for low latency audio transmission, which means that headphones can:

• 🎵 Maintain stable connection up to 10 meters away (no obstacles).
• 🔋 Save battery power by more efficient data encoding.
• 🎧 Synchronize with each other (left and right earphone) without an additional hub.

However, there is a caveat: LE Audio requires smartphone support to work properly, and if your Released phone is up to 2018, there may be problems with synchronization or delays in sound (especially in games), in which case forced switching to the Advanced Audio Distribution Profile (A2DP) protocol through the developer settings helps.

Another thing is automatic reconnection, and when you pull the headphones out of the case, they activate and immediately look for the last device connected, which takes 2-3 seconds, but if you don't get the connection, try:

1. Turn off and turn on Bluetooth again on your smartphone.
2. Reset the headphone settings (click the button on the case for 10 seconds).
3. Remove the device from the list of conjugated in the phone settings and connect again.

Gesture Management: Which Commands Are Supported and How to Set Them Up

Xiaomi AirDots 2 doesn’t have physical buttons — instead, they use touchpads on each headphone, which respond to touch, but not everyone knows that the gesture set can be changed through the Mi Home app (although the feature is not officially advertised).

Standard gestures (by default):

• 👆 One touch - playback/pause.
• 👆👆 Double touch – next track (right earpiece) / previous track (left earpiece).
• 👆👆👆 Triple touch – Calling the voice assistant (Google) Assistant/Siri).
• 👆 (2 seconds retention – switching off the sound (only in call mode).

To reassign gestures, follow the following steps:

Important: If gestures don't work, check:

• 🧴 Clean touch panels (fat or sweat can block touches).
• 🔄 The correct location of the headphones in the ears (microphone should be directed to the mouth).
• 📱 Compatibility of headphone firmware with the Mi Home version.

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If the double touch works as a single touch, try touching the earpiece closer to the center of the touchpad – there is a higher sensitivity.

Autonomy and charging: how much AirDots 2 works on a single charge

The official specifications of Xiaomi AirDots 2 promise up to 4 hours of continuous music playback and up to 12 hours of case charging, but the real figures depend on several factors:

The secret to long-term autonomy lies in the optimized Realtek RTL8763B chip, which dynamically regulates energy consumption. For example, when listening to podcasts (where high sampling rates are not required), headphones consume more energy than when playing music in FLAC format.

To extend the life of the battery:

• 🔌 Charge the case from the source with a current of no more than 1A (fast charging reduces the battery life).
• 🌡️ Avoid overheating (do not leave headphones under direct sunlight).
• 🔋 Once every 3 months, completely discharge and charge the headphones (battery calibration).

Microphones and noise cancellation: how calls work in noisy places

AirDots 2 has two microphones on each earphone, one aimed at the user's voice, the other at ambient noise. The sound processing uses cVc 8.0 (Clear Voice Capture) technology, which suppresses extraneous sounds by:

• 🎤 Adaptive Filtering – Analyzes the frequency spectrum and highlights voice.
• 🔇 Echo suppression – removes echoes of your voice in headphones.
• 🌬️ Wind noise reduction – reduces noise when moving.

In practice, this means that your interlocutor will hear you clearly even on the subway or on the street, but if the headphones are correctly positioned, if the microphone is closed with a hair or scarf, the quality of voice transmission will deteriorate.

For the microphone test:

1. Record a voice message in a quiet room and outside.
2. Compare the noise level in the recording.
3. If necessary, adjust the position of the headphones.

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The cVc 8.0 technology is only effective at wind speeds up to 15 km/h. In a stronger wind, call quality deteriorates regardless of settings.

Synchronization between headphones: why sometimes the sound is only in one

One of the most common problems with AirDots 2 is that one of the headphones doesn't have sound, and it's because of a failure in the synchronization process between the left and right modules, and there are many reasons.

• 🔄 Incorrect extraction from the case (for example, first left, then right).
• 📱 Conflict with smartphone firmware (especially on devices with custom devices) ROM).
• 🔋 Different battery levels in headphones.

To restore synchronization:

1. Place both headphones in the case and close the lid for 10 seconds.
2. Take them out at the same time and wait for the white indicator to flash.
3. If the problem persists, reset the settings (press the button on the case for 15 seconds before flashing red and white).

Sometimes forced reconnection through Bluetooth settings helps:

Settings → Bluetooth → Xiaomi AirDots 2 → Forget the device


Then search and connect again.

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If your headphones are constantly out of sync, try connecting them to another device (like a tablet), and if the problem goes away, it's the smartphone, not the headphones.

Hidden features and chips: what AirDots 2 can do besides music

Few people know, but Xiaomi AirDots 2 supports several undocumented features that can be activated through the Mi Home app or third-party utilities:

• 🎚️ Game mode - reduces the sound latency to 80 ms (by default 120-150 ms.
• 🔊 Equalizer settings - 5 preliminary presets (bass, vocals, classics, etc.).
• 🛡️ Loss protection – when disconnected from the phone, the headphones emit an audible signal (you need to turn on the Mi Home).
• 🔄 Automatic shutdown – Headphones turn off after 5 minutes without activity (saves charge).

Another interesting thing is that you use one earpiece in mono mode.

1. Only take one headphone out of the case (for example, the right one).
2. It will automatically connect to the phone in mono mode.
3. To return the stereo, place both headphones back in the case and get them together.

Note that in mono mode, the microphone only works on the connected earphone. If you need to answer the phone, use the earphone you took out of the case.

Frequent Problems and Solutions: What to Do When AirDots 2 Fails to Work

Even with reliable headphones like AirDots 2, There's a failure.-5 problems and ways of eliminating them:

If none of these things worked, it could be a hardware problem.

• 🛠️ Contact the Xiaomi service center (if headphones are guaranteed).
• 🔧 Try reflashing your headphones through the Mi Flash Tool (for power users only!).

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Before contacting the service, check if the problem is due to incompatibility with your smartphone, for example, on some Huawei models you need to turn off the dual audio feature.

FAQ: answers to popular questions about Xiaomi AirDots 2