No sound on an Android phone during a conversation: what to do

The sudden disappearance of sound during a conversation on an Android smartphone, when the ringtone and media player are working properly, most often indicates a failure in the top speaker, incorrect call volume settings, or a conflict in the software responsible for transmitting the voice stream.

The reasons for such a failure can vary from a banal software “glitch” to physical damage to the speaker or microphone. Often the culprit is a conflict in system settings after a firmware update or incorrect operation of third-party applications that intercept the audio channel. Before taking your phone to a service center, you should try to fix the problem yourself, going through the chain from simple reboots to complex factory resets.

In this article we will analyze in detail the algorithm of actions that will help return the voice to the interlocutor. We will consider both software diagnostic methods and physical equipment tests. Remember that timely identification of the cause saves not only your nerves, but also money for repairs.

Quick diagnostics and initial checks

The first step in eliminating any malfunction on a mobile device is to exclude the most obvious and easily corrected causes. Often, panicked users forget to check basic settings that may have changed accidentally. For example, during a call, you can accidentally press the volume down button, which will completely mute the sound from the speaker.

Make sure that at the time of the call the volume indicator on the screen shows the maximum or acceptable value. If the slider is at its minimum, simply increase it using the side buttons. Also check if the Do Not Disturb or Silent Mode mode is activated, since in some versions Android these profiles can mute not only notifications, but also the call sound.

Another important point is to check the connection of peripheral devices. If headphones or a headset are connected to the phone, the system can automatically redirect the audio stream to them, even if they are in another room or are turned off. Bluetooth-Headphones or headset, the system can automatically redirect the audio stream to them, even if they are in another room or are turned off.

• 📱 Check the volume level during an incoming or outgoing call, and not in standby mode.
• 🎧 Turn off Bluetooth in settings or through the notification shade to prevent sound redirection.
• 🔌 Remove the headphone cable from the 3.5 mm or USB-C jack, if connected.
• 🔄 Completely restart your smartphone by holding the power button and selecting "Restart".

Rebooting the device is a universal method that clears RAM and terminates hung processes that might be blocking the audio driver. If after turning on the problem persists, move on to a deeper analysis of the settings.

Sound settings and accessibility

The operating system Android provides a wide range of accessibility settings that can affect the operation of the audio output. Sometimes users accidentally activate features intended for people with hearing impairments, which results in channel balance being changed or certain frequencies being suppressed.

Go to the menu Settings → Accessibility → Hearing (the path may differ depending on the model, for example Samsung or Xiaomi). Check to see if Mono Audio or Left/Right Channel Balance is turned on. If the balance slider is shifted all the way to one side, there may be no sound in one of the speakers (or in the phone, if it is monophonic).

It is also worth paying attention to the noise reduction settings. Modern smartphones use complex algorithms to cut out extraneous noise. If the algorithm does not work correctly, it may perceive the interlocutor’s voice as noise and drown it out. Try disabling the “Noise Reduction” or “Voice Enhancement” function in the call settings.

⚠️ Attention: Some shells (for example, MIUI or OneUI) have separate equalizer settings for phone calls. Resetting the equalizer settings to default values ​​often solves the problem of distorted or missing sound.

Be sure to check the settings of the specific Phone application. Go to Settings → Applications → Phone → Sound (if there is such an item) and make sure that there are no restrictions or special profiles set for it. Sometimes resetting the Phone application to factory settings helps eliminate software conflicts.

The influence of third-party applications and operating modes

Often, recently installed applications become the reason why the sound disappears during a call. This is especially true for instant messengers that record calls, or memory cleaning apps that can aggressively manage system resources. A conflict between standard dialing and third-party software results in the audio channel not being initialized correctly.

Try to start the smartphone in Safe Mode. In this mode, only system applications are loaded, and all third-party apps are temporarily disabled. If the sound appears during a call in safe mode, then the culprit is one of the applications you installed.

How to enter Safe Mode:
1. Hold down the power button.
2. In the shutdown menu, press and hold the “Shutdown” item with your finger.
3. Confirm entering safe mode in the pop-up window.

To identify the problematic application, remember what you installed shortly before the problem appeared. Try to remove instant messengers (WhatsApp, Viber, Telegram) if they have rights to manage calls, or applications for recording conversations. It's also worth checking permissions: go to Settings → Applications → Permission manager → Phone and see which apps have access to this function.

• 🕵️ Remove call recording applications and third-party dialers.
• 🛡️ Check your antivirus: sometimes it blocks the audio stream, considering it suspicious.
• 📉 Roll back updates to the Phone application to the factory version through the app settings.
• 🧹 Clear the cache of the Phone application and service Google Play.

⚠️ Attention: Applications for Call recordings often don't work correctly on new versions of Android due to restrictions in Google's security policies. They can completely block the sound of the interlocutor. Removing such software is a priority.

Why does safe mode help?

In safe mode, all services that are not included in the base firmware are disabled. This allows you to isolate the problem: if there is sound, then the hardware is working properly, and you need to look for the culprit among the software. If there is no sound even in this mode, the problem is deeper, perhaps in the firmware or equipment.

Physical causes and contamination of the speaker

Do not discount physical factors. The earpiece retina is located at the top of the smartphone and becomes clogged with dust, sebum and lint from pockets. The layer of dirt can be so dense that it completely blocks the passage of the sound wave, creating the illusion of a breakdown.

Carefully inspect the speaker opening in good lighting. If you see a gray crust or a thick layer of dust, careful cleaning is necessary. Use a soft toothbrush or a special brush for technique. Never use sharp objects such as needles or pins, as this may damage the speaker membrane.

The problem may also be related to the protective glass or cover. Some users apply the protective glass incorrectly, blocking part of the earpiece. Remove the cover and check whether it is pressing on the case at the top end, deforming it.

Type of contamination	Symptoms	Cleaning method	Risk of damage
Dust and lint	Quiet sound, rustling	Dry brush, compressed air	Low
Skin oil	Double sound, lack of high frequencies	Alcohol wipe (slightly damp)	Medium (moisture ingress)
Moisture	Complete absence of sound, crackling	Drying with rice or silica gel	High (corrosion)
Mechanical blockage	There is a sound, but very quiet	Careful removal with tweezers	High (membrane puncture)

If the phone has recently been dropped or exposed to moisture, the problem may lie in a loose speaker cable or oxidation of the contacts. In this case, independent repairs without soldering and disassembling skills are not recommended.

Engineering menu and equipment testing

For in-depth diagnostics of the hardware of smartphones based on Android there is an engineering menu. This is a hidden section of the system that allows you to test components, including the speaker and microphone, bypassing the standard interface. It is accessed through special codes.

Open the “Phone” application and enter the code ##4636## (universal for many devices) or #0# (often works on Samsung). If the code is correct, the testing menu will open. Select “Hardware Testing” or “Speaker”.

Run the speaker test. If there is sound in test mode (you hear a melody or a voice), it means that the speaker is physically working, and the problem lies in the software or communication settings. If there is silence in the engineering menu, this is a direct sign of a hardware malfunction.

⚠️ Attention: Engineering menu codes may differ depending on the manufacturer and model of the processor (MediaTek, Qualcomm, Exynos). If the specified codes do not work, look on the Internet for a specific code for your model, for example, for Xiaomi this is often ##6484##. Do not change the settings in the engineering menu if you are not sure of their purpose - this may lead to loss of communication.

Reset settings and extreme measures

If none of the above methods helped, and there is also no sound in the engineering menu (or is present, but in normal mode it is not there), a radical but effective method remains - resetting to factory settings. This action will delete all user data, applications and settings, returning the phone to the “as from the store” state.

Before performing this procedure be sure to create a backup copy all important data: contacts, photos, messages. The reset is irreversible. Go to Settings → System → Reset settings → Delete all data.

After the reset, the phone will reboot. Without installing any applications, make a test call right away. If sound appears, then the problem was a software conflict. If silence persists even on a “clean” system, the probability of a hardware failure is 99%.

• 💾 Back up your data to Google Drive or computer.
• 🔋 Charge your phone to at least 50% before resetting.
• 🏭 Perform a factory reset through the menu settings.
• 📞 Test the call immediately after setting up, before installing applications.

What to do if the reset did not help?

If after a hard reset the sound does not appear during a call, the problem is almost certainly hardware. This could be a loose speaker cable, failure of the speaker itself, damage to the audio codec on the motherboard, or a problem with the antenna module (in some models, the antenna and speaker are connected). In this case, you need to contact an authorized service center to open the device and diagnose it with a multimeter.

Why is there sound on the speakerphone, but not in normal mode?

This is a classic sign of a malfunction of the upper (spoken) speaker, while the lower (polyphonic) speaker is working. This could also indicate a problem with the proximity sensor: if the phone “thinks” it is in your pocket or near your ear, but the sensor is stuck, it may be muting the sound incorrectly. Try wiping the top of the screen.

Can an Android update break the sound?

Yes, this happens. Bugs in new firmware versions may not work correctly with audio drivers on specific device models. In this case, waiting for the next patch from the manufacturer or, for advanced users, rolling back to the previous firmware version helps.

Does the telecom operator affect the sound quality?

The operator affects the signal transmission, but not the operation of your phone's speaker. However, if VoLTE or VoWiFi technology is used, software conflicts may occur. Try disabling VoLTE in the mobile network settings and switching to standard 3G/2G mode to check.

How much does it cost to replace the speaker?

The cost depends on the phone model and region. Replacing the speaker is usually inexpensive, since the part itself is cheap, but the work requires care. In budget models, replacement can cost 10-20% of the price of the device, in flagships it is more expensive due to the complexity of disassembly and sealing.