Why is the sound interrupted in Bluetooth headphones on Xiaomi phone

Owners of Xiaomi, Redmi and POCO smartphones often face an annoying problem: music in wireless headphones stutters and images are dissynchronized when watching videos. Signal interference or software failures of the MIUI shell can make listening to a favorite track a real stress, especially when pauses occur at the peak of volume. This situation is familiar to many users of the ecosystem, since energy saving algorithms here work aggressively.

But don't blame the hardware, because most of the time it's software conflicts or Bluetooth protocols that are misconfigured. MIUI-based Android has a lot of background processes that can interrupt audio streaming to save battery life. Understanding the nature of these interrupts is the first step to stable sound.

In this article, we'll look at all the possible causes, from the banal interference on the air to the complex settings of the engineering menu. Xiaomi offers a wide range of settings, but by default they are often optimized not for communication quality, but for autonomy. Let's figure out how to turn this situation in your favor.

Effects of physical environment and signal interference

The first thing to look at is the physical distance between your smartphone and your headphones, and the presence of obstacles. Bluetooth operates in the 2.4 GHz frequency range, which is literally saturated with signals from Wi-Fi routers, microwaves and neighboring gadgets. If your phone is in the back pocket of your jeans and you are in a crowded place, the signal can be shielded by the body or lost in etheric noise.

⚠️ Warning: Metal surfaces and thick concrete walls are a major barrier to radio waves.If the phone is lying on a table under a laptop or next to a router, connection quality can critically drop.

Also, consider the state of the antenna module in the smartphone itself. In cheap cases with metal inserts or magnetic rings for car owners, the signal often weakens. Interference from a working microwave in the kitchen can also completely "muffle" the data channel for a short time.

• 📶 Try placing your phone in another pocket or on a table to eliminate body shielding.
• 📡 Move away from powerful radiation sources like Wi-Fi routers and base stations.
• 🧲 Remove the cover if it contains metal elements or magnets.

Sometimes, switching the Wi-Fi router frequency from 2.4 GHz to 5 GHz helps, if your devices support it, and it frees up the ether for Bluetooth connections and reduces background noise.

Problems with energy saving and background processes

One of the main reasons why Xiaomi interrupts sound is its aggressive policy of energy saving the MIUI shell.The system seeks to extend the life of the battery by forcibly closing background processes or limiting the operation of communication modules. Battery optimization can kill the process of music playback or limit the bandwidth of the Bluetooth adapter.

To fix this, you need to manually set priorities for the player apps and Bluetooth itself. Go to the battery settings and find the list of applications. For your music player (Spotify, Yandex.Music, VLC) and the Bluetooth system service, you need to set the "No Limits" mode.

Also worth checking is MIUI Optimization settings. Some firmware versions include a feature that controls connections too tightly, and turning off optimization can restore stability, but it can increase energy consumption a little.

• 🔋 Set “No Limits” for Music Apps.
• ⚙️ Disable "Advanced Optimization" in the Developer Menu (if available).
• 🚫 Stop the system from closing the player in the background through the menu of recent tasks.

⚠️ Warning: After a firmware update, energy saving settings are often reset to factory ones. Always check this item after installing the new version. MIUI.

Codecs and sound quality setup in Developer Options

For advanced users who want to maximize quality and stability, the Developer Menu is open, and this is where the Bluetooth codec settings that directly affect audio streaming are hidden, and by default, the system can select a low-bitrate codec (such as an SBC) to save energy, causing wheezing and interruptions.

In the developer menu, look for the Bluetooth Audio Codec section. Try switching it to a better version if your headphones support it, such as AAC, aptX or LDAC. But remember, the higher the quality of the codec, the higher the requirements for channel stability.

Path to settings:


Settings → About phone → 7 times press on "Version MIUI" →




Settings → Additional settings → For developers →




Section "The Network" → Bluetooth Audio Codec

Also on this menu is the option "Disable absolute volume level" that can solve problems with quiet or intermittent sound on some models of headphones, separating the volume control of the phone and the headset.

Experiment with different codecs, because compatibility depends on the specific headphone model. If the sound is completely lost after changing the codec, return the default settings.

Reset Bluetooth settings and reconnect devices

The accumulation of errors in the Bluetooth stack cache is a common cause of instability. If the headphones used to work normally and then began to stutter, it may be that the connection profile was damaged.

Don't just turn off the device, but delete it from the saved list. After that, it's advisable to clear the cache of the Bluetooth system application. This action will not delete your personal data, but reset all network settings of wireless modules.

Once you reset the network, the phone will reboot and you will have to re-enter Wi-Fi passwords, a radical but often the only way to deal with software glitch.

• 🗑️ Remove all unnecessary connected devices from the list.
• 🔄 Reset network settings in the phone menu.
• 🎧 Transfer the headphones to pairing mode again (usually with a long press).

Conflicts of Android versions and MIUI firmware

The problem can be in the bugs of a particular version of the operating system. Forum users often note that after updating MIUI 12 or 13, the sound began to interrupt, whereas on the previous version everything worked perfectly. Bluetooth drivers in new builds may not be fully optimized.

Often, Xiaomi releases security patches and minor updates that fix just such critical communication errors. If the problem has occurred since the last update, it may be worth waiting for the next patch or, for power users, considering rolling back the version.

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Check the Bluetooth version in the phone’s specifications. If you have an older version (4.2 or lower) and your headphones are new (5.0+), conflicts may arise due to incompatibility of data protocols.

It’s also worth checking if the developer’s “Absolute Volume” settings are enabled, which is in conflict with the headphone hardware on some Android versions, and disabling this feature often solves the problem of volume spikes and interruptions.

Hardware malfunctions and diagnostics

You can't rule out a physical breakdown. If the phone fell, was exposed to moisture, or just had a lot of mileage, the Bluetooth antenna module could have gone off the board or failed. Unlike software failures, hardware problems are constantly present, regardless of the settings.

You can check this by connecting other Bluetooth devices to your phone (a column, another phone for transferring files). If the problem is with only one particular headphone device, it's their fault. If the phone doesn't see anything or loses communication with all gadgets, the module in the smartphone is likely to break.

• 🔍 Check out other Bluetooth devices.
• 🔊 Test your headphones with another phone (not Xiaomi).
• 🏥 Contact the service if you notice Wi-Fi problems (they use one antenna).

⚠️ If Wi-Fi stopped working stably with Bluetooth (network disappears, low speed), this in 90% of cases indicates a malfunction of the combined communication module that requires replacement in the service center.

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If software methods and network reset did not help, and the problem is reproduced on different headphones - a high probability of hardware defect of the antenna plume or module.

Frequently Asked Questions (FAQ)