Why Xiaomi Bluetooth headphones stutter – a complete analysis of the causes and solutions

Xiaomi’s wireless headphones are some of the most popular on the market, thanks to a combination of price, sound quality and functionality. However, many users face an annoying problem: the sound begins to interrupt, stutter or disappear for split seconds. This happens on both budget models like the Redmi Buds 3 Lite, and flagships like the Xiaomi Buds 4 Pro. What is the reason for this behavior and how to eliminate it?

In this article, we will discuss the 7 main causes of stuttering in Xiaomi Bluetooth headphones, from the banal (discharged battery) to the technical (codec conflict or interference in the range of 2.4 GHz). You will learn how to diagnose the problem, which settings to check first, and when it is not the gadget itself that is to blame, but your smartphone or environment.

Important: if stuttering appeared after updating the firmware of the headphones or smartphone, the problem may lie in the software conflict - we will also tell you in detail about this.

1. Problems with the battery of headphones or case

The most obvious but often overlooked reason is the low battery charge: When the charge level drops below 15-20%, Xiaomi headphones start saving energy by reducing the power of the Bluetooth module, which leads to loss of data packets and, as a result, interruptions in sound.

How to check:

• 🔋 Check the charge indicator in the Mi Fitness app (for Buds) or Xiaomi Wear (for FlipBuds). If the level is below 30%, recharge.
• 🔌 Connect the headphones to the charging case for 10-15 minutes and check if the stuttering has disappeared.
• 🔄 If the problem persists, try resetting your headphones (press the button on the case for 10 seconds before the red indicator flashes).

Pay special attention to the case: if his contacts are oxidized or contaminated, the headphones may not charge until the end, wipe the contacts with an alcohol napkin and check if the headphones are sitting tight in the nests.

⚠️ Note: If the headphones are discharged in 1-2 hours when used actively, this may indicate battery wear (typical for models older than 2 years), in this case, only replacing the battery in the service center will help.

2. Interference in the 2.4 GHz range

Xiaomi Bluetooth headphones operate at 2.402–2.480 GHz, the same range as Wi-Fi routers, microwaves, wireless mice, and other devices. If there are many sources of interference, the communication between the headphones and the smartphone becomes unstable, which manifests as a crack, stuttering, or sound breaks.

How to detect interference:

• 📡 Install WiFi Analyzer (Android) or Network Analyzer (iOS) on your smartphone and check the 2.4 GHz channels loading.
• 🔌 Turn off other wireless devices (such as a game console or smart light bulbs) for a while).
• 🚪 Move to another room - if the stuttering is gone, the environment is to blame.

Decisions:

• 🔄 Switch the router to channel 1, 6 or 11 (they are less crossed).
• 📶 If the router supports 5 GHz, connect to it smartphone – it will reduce the load by 2.4 GHz.
• 🛡️ For headphones Xiaomi Buds 3/4 Pro enable the Sustainable Connection mode in the settings (sacrifice a little sound quality, but the connection will become more stable).

3. Incorrectly selected Bluetooth codec

Bluetooth codecs determine how audio data is compressed and transmitted between a smartphone and headphones. Xiaomi supports several codecs:

• SBC — It works everywhere, but the quality is mediocre.
• AAC — Better for music, but can slow down on Android.
• aptX/aptX HD — High quality, but requires smartphone support.
• LDAC — maximum quality (up to 990 kbps), but sensitive to interference.

If you select a codec that is not optimized for your smartphone or communication conditions, the sound will be interrupted, LDAC on a weak signal, Bluetooth gives strong stuttering, and AAC Xiaomi phones are running crooked due to poor implementation.

How to change the codec:

1. On Android: Go to Settings → Connected devices → Headphones → Additional parameters → Codec.
2. On iPhone: codec fixed (AAC), change.

⚠️ Note: On Xiaomi smartphones with MediaTek processors (such as the Redmi Note 11), the aptX codec may not work stable. SBC or AAC.

4. Software failures: firmware headphones or smartphone

Stuttering can occur after updating the firmware of headphones or smartphones. For example, in 2023, users of Xiaomi Buds 4 complained of massive communication interruptions after upgrading to version 4.7.1.0. And on Redmi Buds 5, the bug manifested itself when connecting to an iPhone with iOS 17.2.

How to check:

• 📱 Open the Xiaomi Wear or Mi Fitness app and watch the headphone firmware version.
• 🔍 Google the model. + firmware + «Stuttering (e.g. Xiaomi Buds 3 Pro 3.5.1.0 lag).
• 🔄 If the bug is massive, try rolling back to the previous version (if there is such an option) or wait for a patch.

What to do if the problem is in the smartphone:

• 🔄 Reboot your phone – sometimes resetting the Bluetooth stack helps.
• 🗑️ Remove the headphones from the list of devices and connect again.
• 🔧 On Android, try resetting your network settings: Settings → System system → Reset → Reset Wi-Fi, mobile network and Bluetooth.

5. Hardware malfunctions: headphones or smartphone

If stuttering appears only in one headphone or after physical exposure (fall, moisture), the problem may be hardware:

• 🎧 Disturbed speaker – sound wheezing or interrupted at high frequencies.
• 📶 Bluetooth antenna malfunctions – communication is cut when turning the head.
• 🔌 Contacts oxidized - headphones turn off with a light movement.

How to check:

• 🔀 Change your headphones (right to left ear and vice versa) If the problem has moved, it's the earphone itself that's to blame.
• 🎵 Test the headphones with another smartphone/PC. If stuttering remains - malfunction in them.
• 🛠️ Disassemble the case (carefully!) and check if the plume or battery is leaving.

Typical “symptoms” of hardware problems:

⚠️ Note: If Xiaomi headphones are warranty, do not disassemble them yourself - this will void the warranty.

6 Conflicts with other devices or applications

Sometimes stuttering is caused by other programs or devices that "drain" Bluetooth or CPU resources.

• 🎮 Gaming controllers (e.g., Xiaomi Gamepad) connected via Bluetooth.
• 📱 Background applications that use a microphone or audio stream (e.g. Shazam, Google Assistant).
• 🔄 Automatic switching of sound between devices (for example, when connecting to a PC).

How to find and resolve conflict:

1. 🛑 Close all background apps (on Android: Settings) → Annexes → Permits → Microphone).
2. 🔌 Disable other Bluetooth devices (fitness bracelets, keyboards, etc.).
3. 🔧 On Android, turn off the “auto-switching sound” function in Bluetooth settings.
4. 🎵 In the headphone settings (in the Xiaomi Wear app), disable Double Connection (unless you use two devices at the same time).

Pay special attention to game modes on Xiaomi smartphones. POCO F5 or Redmi K60 Turning on Game Turbo mode can prioritize performance at the expense of Bluetooth stability. → Special facilities → Game turbo.

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If stuttering only appears in a particular app (like YouTube or Spotify), clear its cache: Settings → Annexes → [Name of name] → Memory. → Clear the cache.

7. Incompatibility with the operating system

Xiaomi’s Bluetooth headphones are optimized to work with Android, and there may be problems on iOS or Windows, such as:

• 🍎 On the iPhone headphones can turn off on their own due to aggressive energy savings iOS.
• 🪟 Windows (especially older versions 10) does not support modern codecs (aptX, LDAC).
• 🤖 Some custom Android firmware (like LineageOS) doesn’t have drivers for Xiaomi codecs.

Solutions for different OSes:

For iPhone will also help reset network settings: Settings → Mainstream → Transfer or discharge → Reset the network settings. Then reconnect the headphones.

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Xiaomi headphones work best with smartphones on pure Android or MIUI. iOS and Windows may have problems with codecs and communication stability.

FAQ: Frequent questions about stuttering in Xiaomi headphones