Why you can’t hear the interlocutor on the phone Xiaomi Redmi

When a sound suddenly disappears during an important conversation or the voice of the interlocutor becomes barely distinguishable, it can anger any smartphone owner. Unfortunately, for Xiaomi brand devices and the Redmi sub-brand, this problem is not unique and can occur for a variety of reasons: from a banal software error to physical damage to the speaker. Users often face the fact that the incoming call passes normally, but when the answer is silent in the handset, or the sound appears only after the speaker is turned on.

Before you bring your gadget to a service center or panic, you need to do a series of self-diagnostic manipulations. In most cases, the problem lies in the software or the misconfiguration of multimedia profiles, not in the failure of expensive components. Understanding the sound architecture in the shell of MIUI or HyperOS will help quickly localize the source of the malfunction.

In this article, we will discuss in detail all possible scenarios why you can’t hear someone on your Xiaomi Redmi phone, and provide step-by-step instructions for eliminating each of them. We will cover both software solutions, including resetting and engineering menus, as well as physical aspects, such as cleaning the speaker grid or checking plumes.

Software failures and system restart

The most common cause of sudden loss of sound is a temporary failure in the Android operating system or the manufacturer's proprietary shell. Mobile devices work around the clock, and over time, errors accumulate in RAM, processes freeze, and audio codec drivers stop correctly processing the incoming audio stream. In such cases, rebooting the device often works wonders, cleaning the cache and restarting system services.

Sometimes the problem is deeper and involves a specific firmware update, and after installing a new version of MIUI, users may notice that the sound is quieter or gone altogether, because of conflicts between old configuration files and new system requirements, and in such a situation a more radical approach may be required, such as resetting the settings to factory settings, but before that, you should try to just turn off and turn on the phone.

⚠️ Warning: If after the reboot the sound appeared, but after a while again disappeared, probably conflict some third-party application.

To perform a full reboot, press the power button and select the appropriate menu item. If the screen does not respond, use a forced reboot, holding the power button for 10-15 seconds. This action is safe for your data and is the first step in any diagnosis.

Checking the sound and profile settings of Bluetooth

One of the most insidious reasons why you can't hear someone is because you're actively connected to external audio devices. Xiaomi smartphones automatically switch the audio output to the last Bluetooth device you've ever used, whether it's a headphone, speaker, or car headset. If the headset is out of reach or off, the sound will go nowhere, creating the illusion of a speaker breakdown.

To rule out this factor, check the control panel. Flip the notification curtain from top to bottom and make sure that the Bluetooth icon is not active or selected as the output device. Also pay attention to the media settings: sometimes the call volume slider and media are spaced, and the user accidentally turns down the volume of the call.

Also, in the audio settings, there's a Sound Improvement feature or equalizer that might conflict with the carrier's codecs. Try turning off all sound effects in the Settings menu → Sound and Vibration → Sound Effects, which will help you understand if the software processing of the sound is causing it to disappear.

• 🔇 Turn off Bluetooth in the notification curtain and check the sound.
• 📢 Increase the volume with buttons on the case during incoming call.
• ⚙️ Reset the equalizer settings to the standard in the sound menu.
• 📵 Make sure that the “Do Not Disturb” or “No Sound” mode is not activated».

Physical pollution and protective accessories

Don't underestimate the impact of the environment on communication quality. The conversational speaker in Redmi and Xiaomi smartphones is located at the top of the screen and is often hidden by a thin grid or open at all. During operation, dust, pocket pile, skin fat and micro-particles of dirt accumulate in the speaker's holes, and over time this layer thickens and turns into a cork that physically blocks the sound wave.

Security windows or covers can also cause poor hearing, cheap protective films sometimes have the wrong perforation or simply seal the speaker hole, high-sided covers can block the output of sound, especially if the phone is lying on the table, and visual inspection in good light will help identify such mechanical obstacles.

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Use a soft toothbrush to clean the speaker mesh carefully. Do not use sharp objects to avoid piercing the speaker membrane inside.

You can use a slightly wet (not wet!) napkin or a special sticky tape to clean the equipment. It is strictly forbidden to blow into the speaker with your mouth, since saliva, getting on the grid, creates a film that attracts even more dust and finally silences the sound.

• 🧹 Carefully clean the speaker mesh with a dry soft brush.
• 🛡️ Remove the protective glass and check if the cutouts match.
• 🧪 Wipe the top of the screen with an alcohol wipe (without getting liquid inside).
• 👀 Inspect the speaker under bright light for sulfur or pile.

Diagnostics through engineering menu and tests

In the MIUI shell, there is a built-in tool for diagnosing hardware components that allows you to check the performance of speakers regardless of the operating system. This is the most reliable way to know whether the problem is software or hardware.

Enter the phone app code ##6484## or #4636##. The CIT menu will open, and you will find audio-related tests like Receiver or Speaker, and you will hear a melody or voice when you run the test, which will confirm the speaker's performance.

Code for logging into the engineering menu: ##6484##

If the regime CIT The sound is, therefore, the speaker is working, and the problem lies in the settings of Android, applications or SIM-If you're in the test mode, you hear a noise or a crack, it's a direct indication that you need to change the speaker or the plume.

Problems with SIM-map and network operator

Sometimes the reason for the lack of sound is not in the plane of the phone, but in the field of telecommunications services. SIM-A card, poor tray contact, or network logging failure can cause the call to connect, but the audio channel is not installed. SIM-cards on a newer (nano-SIM with cut edges) or after a phone drop.

Try to get it out. SIM-You can also use a card, wipe the contacts with a soft cloth, and put them back in, and it's also effective if you move the card to another slot (if there are two) or to another phone. SIM-If you have a card, it means that the Xiaomi phone is a problem.

Also worth checking is VoLTE (Voice over LTE), which sometimes conflicts with networks of certain carriers, is enabled: Try temporarily disabling 4G/5G in mobile network settings, leaving only 3G/2G, and check the quality of communication.

Resetting and software update

If software failures are system-based, you may need to reset your settings. This is a radical but often effective method.Be sure to back up all your important data before you do this, as the phone will return to the "out of the box" state.

Go to Settings → About Phone → Settings Reset → Erase all data. Once the phone is restarted, the phone will be clean. If the problem was a conflict of system files, the sound should recover. Also remember to check for system updates in the About Phone menu → MIUI version, as Xiaomi regularly releases patches that fix known bugs.

It is important to note that after the firmware update, some settings may get lost, so if the problem occurs immediately after the update, try not to reset the phone, but first check the settings of the iREGION audio profiles.

Hardware malfunctions and repairs

When software methods are exhausted, we have to talk about hardware. In Xiaomi Redmi smartphones, the conversational speaker is often a separate module or soldered into the lower board (depending on the model), when it falls, hits or gets moisture, this component fails first.

Another common cause is the plume's drift, and vibrations during prolonged use or after a fall can cause the speaker or microphone connector to move slightly away from the motherboard, in which case the sound may disappear intermittently or only appear at a certain position of the phone.

⚠️ Attention: Self-disassembly of modern Xiaomi smartphones is difficult due to the use of adhesive frames and fragile plumes.Inept intervention can lead to damage to the screen or other components.

To replace the speaker requires a special tool: suction cups, heating table or hair dryer, sets of screwdrivers. If you do not have experience in repairing mobile equipment, it is better to contact an authorized service center, where you will conduct professional diagnostics and replace the part with a guarantee.

• 💧 Infection of moisture causes corrosion of contacts and failure of speakers.
• 🔨 The impacts can cause the speaker membrane to break off inside the body.
• 🔌 The plume retreat is a frequent problem after falls.
• 🏭 Factory marriage is possible, but there are less program failures.

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If the engineering test shows silence and cleaning doesn’t help, it’s a 100% hardware breakdown that requires a part to be replaced.

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