Previous articleDisappeared sound when calling Xiaomi: how to return the voice of the interlocutor in 5 minutes

You pick up the phone, and the answer is silence, or you hear the person you're talking to, but they're not. Either the sound is interrupted, distorted, or even replaced with strange noise artifacts. Sound problems during calls to Xiaomi are one of the most common user complaints, and the reasons can be rooted in both software failures of MIUI and hardware defects, and both the budget Redmi Note 12 and the flagship Xiaomi 13 Ultra suffer from this.

The big challenge is diagnostics. Without a systematic approach, you risk spending hours trying to figure out all the possible causes, from In-Air mode on to oxidized speaker contacts, and we've put together 12 proven causes of no sound on calls, from the most obvious to the exotic, as well as unique solutions for models with a Snapdragon 8 Gen 2 chip, where the problem is often related to a conflict of audio drivers. Let's start with what you can fix yourself in 2 minutes.

1. Checking basic settings: why the phone went deaf after the upgrade

The first thing to do is to eliminate software failures caused by a MIUI update or an accidental change in settings, especially for Xiaomi owners on Android 13/14, where audio settings are often reset after updates.

Start with a check:

• 🔊 Call volume level: press volume button during incoming call.Should slider have gone off to zero after headphones are connected.
• 🛩️ In-plane mode: even if the icon doesn’t burn, switch your phone to this mode and back (Settings) → SIM-maps and mobile networks → On the plane mode»).
• 🔕 Inactive SIM-map: go to Settings → SIM-Maps and mobile networks and make sure that the main SIM included (green tick).
• 🎧 Bluetooth priority: If the phone was last connected to wireless headphones, the system could have been stuck in this mode.

Pay special attention to Settings → Sound → Media and Call Volume → Separate Control. In some Xiaomi firmware, this setting is reset, and the volume of calls is tied to the media sound that you may have muted while listening to music.

⚠️ Note: If you use two of these SIM-check the sound settings for each individual. MIUI 14 bugs with "mutty" second SIM It is also available on the Redmi Note 11 Pro.+ POCO X5 Pro.

2.Resetting sound settings: when the system "deafens" for no reason

If the basic settings are fine, but the sound is still missing, the problem may be in the conflict of audio drivers, which is typical for devices after upgrading to Android 14 or when using custom firmware.

Reset the sound settings:

1. Go to Settings → Applications → Application Management.
2. Click on the three dots in the top right corner and select Reset app settings.
3. Confirm the action. This will return all the permissions to the factory parameters, including access to the microphone and speakers.

For models on the Snapdragon 8 Gen 1/2 (for example, Xiaomi 12T Pro or Redmi K60 Pro) additionally do:

Enter the dialer: ##36446337##


Select Audio → Headset Mode → Off (if enabled).




Reset the device.

⚠️ Note: #36446337## only works on Qualcomm processors. on MediaTek (e.g. Redmi Note 12) 5G) he'll cause a mistake.

Volume level checked | Bluetooth | Application settings reset | Test via engineering menu-->

3.Mic problem: You can't hear, but you can hear the person

If you hear the person you're talking to, but they don't, it's the microphone's fault, and 60 percent of the time it's due to contamination or mechanical damage to the bottom microphone (the microphone is responsible for the voice transmission).

How to check:

• 🎤 Microphone test: record a voice message to a voice recorder or WhatsApp, and if the sound is distorted or missing, the microphone is defective.
• 🔍 Visual inspection: light a flashlight into the microphone hole (usually near the connector) USB-C). Do you see dust, fibers or moisture? It blocks the sound.
• 🛠️ Software reset: go to Settings → System system → Resetting settings → Reset the network settings. This will update the configuration of the modem that controls the microphone during calls.

For Xiaomi models with dual microphones (such as the Xiaomi 13 Pro or Poco F5 Pro), try temporarily turning off noise cancellation:

Enter the dialer: ##4636###


Select Phone Information → Microphone




Turn off the Noise Suppression option (if available).

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If the microphone is running in the recorder but not during calls, the problem is the modem settings. 4G Instead of automatic mode in Settings → SIM-map → Type of network.

4 Hardware malfunctions: when without a service center can not do

If the software methods didn't work, it's probably hardware, and here are the most common hardware reasons for not sounding when calling:

• 🔌 Oxidation of the speaker/microphone contacts: typical for devices that have been in a wet environment (even a short-term condensate ingestion).
• 🔊 Separation speaker: on Xiaomi with a metal body (for example, Mi 11 Lite), the speaker is attached to the glue, which over time loses its properties.
• 📶 Damage to the antenna module: if the network signal is lost along with the sound, the module is to blame RF (radiofrequency).
• 🔋 Battery bloating: presses on motherboard, causing malfunctions in the audio chip.

How to diagnose:

1. Put your headphones on. If there's sound in them, the problem is the phone's dynamics.
2. Call WhatsApp or Telegram, if you have a sound, the cell phone module is broken.
3. Shake the phone next to your ear. Do you hear any extraneous noises (like rattling)? This is a sign of a detached speaker.

⚠️ Attention: On Xiaomi 12S Ultra and Mix Fold 2 Qualcomm audio chip often fails WCD9385. It costs him to replace him. 30-50% Before repairing the phone, check if the warranty is valid.

5. App conflicts: Who is "stealing" sound?

Some apps can block the sound when you call, and most of the time, it's the fault of:

• 🎵 Music players (e.g. Spotify or Yandex Music) if they work in the background.
• 🎮 Voice chat games (PUBG Mobile, Free Fire, which captures the microphone.
• 🔒 Antiviruses (e.g. Avast or 360 Security) that block access to the audio system.
• 📱 Launchers (such as Nova Launcher) that conflict with MIUI.

How to find the culprit:

1. Launch your phone in Safe Mode (press the power button → Safe Mode) and if the sound appears, the third-party app is to blame.
2. Check permissions: Settings → Apps → Permissions → Microphone. Revoke access from suspicious programs.
3. Remove recently installed apps (especially if the problem has occurred after they have been installed).

Xiaomi with Android 12+ has a hidden audio debugging feature:

Activate Developer Mode: Settings → About Phone → MIUI version (click 7 times).


Then: Settings → Additional → Developers → Debugging Audio → Enable Audio Journal.




After the call, check the log in /sdcard/audio_logs/ to indicate which application blocked the sound.

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If the problem disappears in safe mode, the third-party software is to blame. Start by removing applications that request access to the microphone and speakers.

Features of firmware: why after the update the sound disappeared

MIUI updates often bring not only new features, but also sound bugs, especially when it comes to:

• 📲 Switches between Android versions (for example, from Android 12 to 13).
• 🔄 Regional firmware (if you have been through Global) ROM china ROM vice versa).
• 🛠️ Custom firmware (e.g. Pixel Experience or LineageOS).

Decisions:

1. Update rollback: if the sound is gone immediately after the update, go back to the previous version via Settings → About Phone → System Update → Three points → Select the update package (you need an old firmware file).
2. Reset to factory settings: before you do backup! Go to Settings → About phone → Reset settings.
3. Manual firmware: download the full firmware package for your model from en.miui.com and run through Recovery.

For devices with MediaTek (such as Redmi Note 12 or Poco M5), an IMEI reset may be required after firmware:

Enter the dialer: ##4636###


Go to Phone Information




Scroll down and click Update IMEI (if the option is available).

External factors: covers, moisture, magnets

Sometimes the reason for the lack of sound is not the phone.

• 📱 Case or bumper: Some models (like the Spigen Tough Armor) overlap the speaker or microphone opening.
• 💧 Moisture in the dynamics: even if the phone is not sinking, condensation after showering or raining can block the sound.Put the device in rice for 12 hours or use silica gel bags.
• 🧲 Magnetic interference: If you place your phone near powerful magnets (such as a magnetically mounted case), it can disrupt the speaker.
• ☀️ Overheating: above 45 temperatures°C Xiaomi automatically lowers the volume of speakers. Let the phone cool down.

To check the moisture in dynamics:

Enter the dialer: ##4636###


Select Phone Information → Hardware Information




Check the Speaker Status setting if the Wet value is wet.

⚠️ Warning: Don't use a dryer to dry your phone! The hot air flow can melt the internal components. The best way is to have a vacuum bag with silica gel for 24 hours.

8.When to contact the service: signs of serious breakdowns

If you've tried all the methods, but the sound never came, you're probably going to need professional repairs.

• 🔊 Sound is absent in the dynamics, and in headphones, and through Bluetooth.
• 📞 The phone doesn't detect. SIM-map or no net.
• 🔥 Artifacts appear on the screen or the phone spontaneously reboots.
• 🛠️ Audio Hardware Error Error is dropped in the sound test.

The cost of repair in official Xiaomi services (in Russia, 2026):

Before the service visit:

1. Make a backup of data (in case of a reset or replacement fee).
2. Write down the phone’s IMEI (on the box or in Settings → About the phone).
3. Check if the warranty is valid (even if the phone is unlocked, some breakdowns may be covered).

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If you have a warranty, don't open it yourself! 90% of the time, it'll void the warranty.

FAQ: Frequent questions about the sound when calling on Xiaomi