What to do if the speaker on the Xiaomi phone does not work when talking

When you hold your smartphone to your ear, you don't hear the speaker, and there's a sound on the speakerphone, it causes a natural panic. Owners of Xiaomi, Redmi and Poco devices often face similar problems, and not always the cause is a physical breakdown of the iron. The talk speaker is a tiny component that is sensitive to dust, moisture and software failures of the MIUI or HyperOS operating system.

Before you bring your device to a service center, you should rule out software conflicts. Often the problem lies in the wrong settings of Bluetooth or the failure of the system services responsible for routing the audio stream. We will look at a comprehensive approach to diagnosis, from simple reboots to complex engineering tests.

The first thing you need to do is do a basic diagnostic to see if the problem is only the calls or if the sound is gone, and if the music and the video are working normally and the person is not audible when the phone is lifted, it's probably the proximity sensor or the software channel switching, in which case the audio codecs may not be correctly redistributing the signal.

It is important to note that modern Xiaomi smartphones have a complex noise reduction system that sometimes works against the user. Algorithms can mistakenly mistake the voice of the interlocutor for background noise and completely silence it. Checking the settings of the Dolby Atmos and equalizer often helps to return sound if the problem is of a software nature.

If the audio is completely missing, including the media files and alarm clock, the situation is more serious, it may indicate an audio chip failure or a plume break inside the case, but don't jump to the conclusion: in 60% of cases, simply resetting the network settings or cleaning the cache of the Phone application helps.

⚠️ Warning: If the phone has recently fallen into water, do not try to charge it or dry it with a hairdryer. moisture inside the case could cause a short circuit in the speaker circuit, and turning on the power will finally knock the device out.

Quick solutions and program resets

The simplest and most often ignored method is to completely reboot the device. Unlike switching off and on with a button, it is the Reboot cycle that causes the system to re-initialize all drivers, including the audio drivers. The MIUI-based Android operating system sometimes accumulates temporary errors that block the audio track from working.

The second important step is to check the connected devices. A smartphone can automatically switch the output to a forgotten Bluetooth device or headset in the bag. Turn off Bluetooth completely and check if the sound has appeared. It's also worth checking whether Do Not Disturb or Silent Mode is activated, which can block incoming calls.

Step three is cleaning the Phone app. The accumulated cache can cause conflicts when processing an incoming call. Go to the application settings, find the standard call, and select Clear cache. This won't delete your contacts, but it will reset the call processing settings.

And don't forget about physical switches. Some Xiaomi models with mechanical volume buttons can get stuck, which makes the system think you've minimized the sound. Actively press the volume buttons several times to develop a mechanism.

Configuring audio codecs and system parameters

The deep audio setting in Android is hidden in the engineering menu, and you need to enter a special code in the call app to access it. Dial ##6484## or #4636##. In the CIT (Customer Inspection Test) menu that opens, select the item associated with the Receiver. Here you can run the test sound.

If the test has sound but it doesn't have sound in normal calls, the problem is with the VoLTE settings or the carrier. Try temporarily disabling the VoLTE function in the settings. SIM-Sometimes codecs. HD-The sound is incompatible with the operator’s current base station, resulting in silence when connected.

Also worth checking is the Dolby Atmos settings if they are present in your model. Go to Settings → Sound and Vibration → Sound Effects. Try switching the profile from Automatic to Balance or Voice. Sometimes the automatic mode mistakenly suppresses the frequencies of human speech as noise.

⚠️ Warning: Do not install third-party apps for “amplification of sound” from the Play Market. They often conflict with Xiaomi system drivers and can permanently disrupt the audio subsystem.

For advanced users, you can log in to the engineering menu using the code ##3646633## (not working on all MediaTek processors). In the Hardware Testing → Audio → Audio Debug Info section, you can see the current status of the speakers. However, changing the values (Gain) without understanding the physics of the process is not recommended, as this can lead to wheezing or complete failure of the speaker.

Diagnostics through CIT Engineering Menu

The CIT Engineering Menu is the most powerful diagnostic tool built into every Xiaomi smartphone, and allows you to check each component of the device separately from the main operating system. To get there, open the Phone app and type in the combination ##6484##. If the code doesn't work, try to find the Service and Feedback app in the list of all applications and click on it many times in a row.

In the CIT menu, find Receiver or Speaker. When you press it, it will play back the test signal. If you hear a clean, loud sound, it means that the speaker is physically functional and the problem is in the software or network. If you hear cracking, wheezing or silence, there is a hardware malfunction.

The microphone test is worth a special attention, because users often confuse problems with the speaker and the microphone. If you can't hear you, but you can hear the interlocutor, there is a problem in the microphone. In the CIT menu, select Main Mic and Sub Mic. Write down a phrase and listen to it. If the recording is intermittent, it is possible that the microphone hole is clogged.

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If the CIT test shows a Fail error, the software methods are powerless – a replacement component or a plug in the service is required.

It is important to pass all tests in sequence. Sometimes a failure of one module (for example, a proximity sensor) can block the work of others. If the speaker test is successful but there is no sound in normal mode, try selecting Version from the CIT menu and checking if all components are identified correctly by the system.

Problems after updating MIUI or HyperOS

Newer versions of MIUI or the HyperOS transition may contain bugs that conflict with specific models' audio drivers. Users often notice that after an update, the sound becomes quieter or disappears completely when using VoLTE.

In this case, cleaning the Dalvik Cache partition helps. You need to go to Recovery mode (press the power and volume button on the phone turned off). Select the language, then Wipe Data (caution will reset the settings, but will not delete the photo if you choose "Wipe All Data" with a backup, but it is better to just "Wipe Cache" if available, but on new Xiaomis often only a full reset).

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Before a major update, always make a full backup through the Mi Cloud or your computer, which will allow you to roll back to the stable version of the firmware in case of critical sound errors.

It’s also worth checking if the mono-sound mode is on, which is sometimes activated in the special features section after the upgrade.Way: Settings → Advanced settings → Special.Specials → Hearing.Make sure the Mono-audio switch is off if you don’t have a medical indication.

If the problem is massive (they write about it in the forums for your model), it is better to wait for a patch from the developers. Installing global firmware on the Chinese version or vice versa (Chinese on the global) without unlocking the bootloader can lead to the modem inoperability and, as a result, the lack of sound in the GSM network.

Physical malfunctions and cleaning of speakers

The most common, but common, cause is contamination of the speaker's mesh, where microholes are clogged with earwax, dust and pile from the pocket, and over time, the layer of dirt becomes an impenetrable membrane that doesn't let the sound through, and visually, this can be invisible, because the dirt is stuffed from the inside.

To clean, use a soft toothbrush or a special sticky electronics tape. It is strictly forbidden to use needles, pins or compressed air under high pressure. A needle can damage the speaker membrane, and air drives the dust even deeper or tears the speaker from the body.

⚠️ Warning: Never use alcohol or aggressive chemistry directly on the speaker grid.The fluid can penetrate and dissolve the membrane's adhesive layer, resulting in irreversible distortion of the sound.

If cleaning didn't work, the plume may have moved away. This often happens after falls. The speaker can physically move away from the contact area on the board. At home, without disassembly skills and tools (dryer, suction cups, screwdrivers), it is not recommended to climb inside, since you can damage the plumes of the display or battery.

Notice the condition of the contact fives. If the phone was disassembled before, the contacts could oxidize. Careful wiping of the contacts with alcohol (already with the body disassembled) and pressing the plume can return sound. However, if the speaker "hackles" even with a slight finger pressing on the body in the ear, it is a sign of detachment of the coil inside the speaker.

When you need to go to the service center

There are a number of symptoms in which self-repair is useless and even dangerous. If the phone after the fall stopped making sounds (neither vibrations nor squeaks when charging), most likely, the audio codec on the motherboard is damaged or there was a dump. BGA-processor contacts.

The following signs indicate the need for professional repair:

• 🔇 Complete absence of sound in all modes (calls, media, alarm) after checking settings.
• 📉 The appearance of strong distortions, wheezing, which do not disappear after cleaning.
• 💧 Getting liquid inside the case (even if the phone continues to work).
• 🔥 Heating the bottom of the phone in the speaker area during a conversation.

In the service center, the technicians will call the speaker circuit with a multimeter. If the resistance is infinite, the speaker is in the cliff, if close to zero, a short circuit. It is often cheaper and more reliable to replace the entire module than to try to solder miniature components. The original Xiaomi speakers provide the correct acoustic resistance, which is important for the operation of the amplifier.

It can also sell the audio codec if the board is a problem, and it's a complex micro soldering system that requires a soldering station and a flux, and you can't do that without experience. Don't drag on the repair, because if the amplifier burns, it can eventually break through other circuits, increasing the cost of repair.

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