Why there is no sound in wireless headphones on Xiaomi Redmi: the complete guide

The situation when, after successfully pairing a Bluetooth headset with your Xiaomi Redmi smartphone, an audio signal suddenly disappears, is familiar to many users. You can see the connection indicator in the status bar, but the music does not play, and the interlocutor in the messenger can not hear you. This is a common problem that often lies not in the hardware breakdown, but in a software failure or incorrect configuration of data protocols.

In the MIUI ecosystem and the new HyperOS, energy-saving algorithms can aggressively shut down background processes that control audio streams or misallocate priorities between applications. A comprehensive diagnostic is needed before you take a device to a service center or buy a new headset, and 85% of the time, the problem is solved by reconnecting the device or changing the settings of Bluetooth codecs in the engineering menu.

In this article, we’ll look at all the possible causes of lack of sound, from trivial volume dissynchronization to complex driver conflicts. We’ll look at solutions for different Redmi models, whether it’s a budget Note series or flagship devices. Careful follow-up will help you bring audio back to games, movies and music tracks at no extra cost.

Basic Diagnostics and Physical Connection Check

The first step should always be to check the status of the devices. Often users forget that wireless headphones can be connected to the phone, but not activated as the default audio output device. Android system allows you to connect multiple audio devices at once, and priority can shift to the speaker of the smartphone or other gadget.

Check the indicators on the headphones themselves: do they flash, do they burn with constant light? If the indication is missing, the headset battery may have run out. It is also worth making sure that the distance between the phone and the headphones does not exceed the permissible limits, since the radio signal can be blocked by walls or metal structures.

⚠️ Attention! If the headphones have a physical on button, make sure they don't go into sleep mode due to prolonged downtime.

Try playing the audio file and adjusting the volume at the same time. In some versions of the MIUI shell, the volume level of the phone and headset are independently adjusted. Make sure that the slider is not in the minimum position. It is also worth checking whether Do Not Disturb or Silent Mode is on, which can block media sounds, leaving only system notifications.

If the basic checks fail, move on to a deeper analysis of the connection settings, and sometimes a simple restart of the Bluetooth module helps to reset the protocol stack’s temporary errors.

Bluetooth settings and device management in MIUI

The Bluetooth management interface in Xiaomi smartphones has advanced functionality that can be both an advantage and a source of problems. Go to the Settings → Bluetooth menu and find your headset in the list of your devices. Click on the gear icon or arrow to the right of the model name.

In the menu that opens, make sure that all the necessary profiles are activated. There are usually two: Media Audio (for music and video) and Audio Calls (for conversations). If the switch opposite Media Audio is turned off, the phone will be connected, but there will be no sound in the applications.

Another common cause is the accumulation of errors in the pairing cache, the system may "think" that the device is working correctly, even though the communication channel has already been broken.

• 📱 Open Bluetooth settings and click "Cancel pairing" or "Forget device".
• 🔄 Reboot Xiaomi Redmi smartphone to clear RAM.
• 🎧 Put the headphones in pairing mode (usually by holding the power button for a long time).
• 🔗 Reconnect and check the sound.

Importantly, when reconnected, the system may request permissions to access contacts or call logs, which rarely affects media sound, but can block the microphone from working.

Application Conflicts and Multimedia Settings

Sometimes the problem isn't with the system, but with a particular application that has taken over the monopoly on audio output, for example, if you listened to music in one player and then opened YouTube and the sound was gone, there may have been a stream switching failure, and see if other media applications are running in the background that might block new ones.

There's a "Mi Sound Enhancer" or equalizer feature in MIUI audio settings. Trying to use an unsupported audio profile can completely eliminate the sound. Try turning off all sound effects and return the equalizer settings to "Normal" or "Default".

You should also pay attention to the special features settings. In Settings → Advanced Settings → Special. features → Hearing can be activated with the "mono-audio" function or the balance of channels can be shifted completely to one side. If the balance is shifted 100% left or right, in one of the channels (or in both if the headset is monophonic) there will be no sound.

Some users experience audio loss only in certain applications, such as Telegram or WhatsApp, which may be due to background activity restrictions. Go to Settings → Apps → All apps, find the problem app, select Battery and set No Limits mode, which will prevent the power saving system from shutting down the audio stream.

Reset network settings and Bluetooth stack

If simple methods didn't work, there may have been a lot of critical errors in the network configuration files, and resetting the network is a radical but often effective method, and it will bring Wi-Fi, mobile Internet, and Bluetooth back to factory values.

To perform the reset, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. The system will warn you that all stored Wi-Fi passwords and other devices will be deleted. This is a necessary measure to clean the connection registry.

⚠️ Attention! After resetting your network settings, you'll have to re-enter passwords from all Wi-Fi networks and re-enter all Bluetooth devices.

Once you reboot your phone, try reconnecting your headphones. Often, this process eliminates deep driver conflicts that are not visible to the user. If that doesn't work, the problem may be with specific audio compression codecs.

There is a hidden Bluetooth debugging feature available through the developer menu, where you can force the codec to change the audio transmission, and if your phone tries to use a high-quality codec (like LDAC or aptX HD) and the headphones don't support it or are unstable, the sound can go completely missing.

Working with codecs and developer menu

Xiaomi smartphones have a hidden engineering menu that allows you to control Bluetooth connection settings at a low level. To get there, you need to activate the developer mode: go to Settings → About phone and quickly click on the MIUI version or OS version 7 times.

Then, in the Additional → For developers, find the "Bluetooth Audio Codec" section. The default is "Systems Default" (SBC). Try manually switching the codec to SBC or AAC. These codecs are the most versatile and are supported by almost all devices.

If switching to SBC returned sound, then the problem was codec incompatibility. You can leave SBC for stability or try other options if your phone and headphones support them. Also on the developer menu there is an option "Bluetooth Audio Sample Rate", which is also recommended to set at 44.1 kHz or 48 kHz for maximum compatibility.

Hardware malfunctions and compatibility

If the headphones stopped working with several different phones (not only Xiaomi, but also, for example, with an iPhone or laptop), then the problem lies in the headset itself, perhaps a Bluetooth module or speaker failed.

If you have very old headphones (version 2.1 or 3.0) and a new flagship Xiaomi with Bluetooth 5.3, protocol conflicts can occur. Although the standard provides backward compatibility, in practice, there are sometimes failures when handshake devices of different generations.

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Try connecting your headphones to another device. If there's sound, there's a problem with your phone. If there's no sound, the problem is with the headphones.

In rare cases, static electricity can cause the problem. Try to discharge the static potential: turn off the phone, remove it. SIM-card (if possible), wait 10 seconds and turn it on again, and it also helps to completely discharge the phone battery to 0% and then charge to 100%.

If none of these things worked, you may need to reset your phone to factory settings or flash it. However, before you go for such measures, make sure you check all the software aspects.

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A comprehensive check includes volume check, reconnect, reset, change the codec and test on another device, and once you have all the software reasons, you should think about repairing it.