Problems with sound during a conversation are one of the most common complaints from owners of modern smartphones. A situation where the interlocutor cannot hear you or the sound is muffled and distorted can arise suddenly due to a software glitch, moisture, or simple contamination of the speaker. Device owners Samsung Galaxy are luckier than users of many other brands, since they have powerful built-in self-diagnosis tools in their arsenal.
Before taking the device to a service center or buying a new gadget, it is necessary to conduct a thorough check of the hardware. Often the reason lies not in the breakdown of the device itself, but in incorrectly selected settings or the operation of third-party applications that intercept access to audio. In this article we will analyze all available testing methods, from simple voice recordings to using the engineering menu. microphone, but in incorrectly selected settings or the operation of third-party applications that intercept access to audio. In this article we will analyze all available testing methods, from simple voice recordings to using the engineering menu.
Timely diagnostics can save significant money and time. If you notice that the quality of communication has deteriorated precisely after the phone was dropped or exposed to rain, you need to act immediately. However, don't rush to conclusions: sometimes a simple cleaning of the holes or rebooting the system is enough to return crystal clear sound.
Using the built-in Samsung Members application
The most reliable and safest way to check the functionality of the audio system is to use the official application Samsung Members, which is pre-installed on most brand devices. This tool is designed specifically to diagnose all components of a smartphone without the risk of damaging the software. Launch the application and go to the support section.
In the menu, select “Diagnostics” or “Tests”. You will see a list of all available checks, including the screen, battery, sensors and, of course, sound. Find the test microphone. The system will prompt you to record a short fragment of speech, and then automatically play it back to evaluate the quality. If the recording is clear and loud, then the hardware is working properly.
⚠️ Attention: Make sure the room is quiet during the test. Extraneous noise may distort the test result, and you will mistakenly decide that the microphone is faulty.
The advantage of this method is that it checks the main microphone used for telephone calls. Unlike third-party apps, Samsung Members has direct access to system drivers and minimizes the impact of background processes. If the test is successful, but problems in messengers persist, look for the reason in the settings of specific applications.
Before running diagnostics in Samsung Members, close all running applications to free up RAM and eliminate microphone access conflicts.
Checking through a standard voice recorder
If for some reason application Samsung Members is not available or you want to carry out additional control, use the standard “Voice Recorder” application. This is a simple but effective way to evaluate the actual quality of audio capture in a home environment. Open the application and start recording, speaking in a normal voice at a distance of 10-15 centimeters from the device.
After stopping recording, listen carefully to the resulting file. Look for any hissing, crackling or echoing effects. Good signal should be clear, without distortion, even when the volume of your voice changes. Try recording speech from different sides of the phone to understand which microphone (bottom or top) is not working correctly.
- 🎙️ Speak clearly and intelligibly, avoiding sharp shouts that can cause input congestion.
- 🔇 Check the recording with headphones to hear everything nuances and background noise.
- 📍 Test both microphones: the bottom (main) and the top (for noise reduction).
Modern smartphones Samsung are equipped with a system of several microphones for active noise reduction. If the main microphone is working, but the top one is not, the other person can hear you, but your voice will sound like a barrel or interrupted. A voice recorder will help identify this difference, since different sensors may be used when recording video or in different modes.
Diagnostics through the engineering menu (USSD codes)
For a deeper check of the technical characteristics, you can use the hidden engineering menu. This method provides access to advanced hardware tests that are not visible in the regular interface. To enter diagnostic mode, open the Phone application and enter a special code.
#0#After entering the code, a grid of buttons will appear on the screen with buttons for testing various components. Find the button responsible for the sound or microphone (often indicated as Loopback or a microphone icon). In Loopback mode, the sound from the microphone is immediately transmitted to the speaker, allowing you to hear yourself in real time. This is an ideal way to check for delays and distortion.
⚠️ Attention: Be careful in the engineering menu. Do not change settings whose meaning you do not know, as this may lead to incorrect operation of the radio module or audio path.
In some models Galaxy the menu structure may differ. If the code #0# doesn't work, try alternative options specific to your region or carrier. Remember that access to these functions is intended for service engineers, so the interface may look unusual for the average user.
What to do if the code does not work?
If entering the code does not open the menu, your firmware may be limiting access to engineering functions. Try installing the Phone Info SAM application from the Play Market - it often provides similar access to hardware tests through its interface.
Analysis of work in instant messengers and video calls
Often the problem is localized not in the phone itself, but in the specifics of the operation of communication applications. Messengers like WhatsApp, Telegram or Viber use their own audio compression algorithms and access settings. If you can be heard perfectly in a normal call, but not in the messenger, the reason lies in the software.
Go to the smartphone settings, the “Applications” section, find the desired messenger and check the permissions. Make sure that access to microphone is allowed and there is no “Only while in use” restriction. Sometimes resetting an application or reinstalling it helps eliminate a software conflict that is blocking sound transmission.
| Application | Probable cause of failure | Solution method |
|---|---|---|
| Outdated version Software | Updating via Play Market | |
| Telegram | Incorrect privacy settings | Checking system permissions |
| Zoom / Skype | Incorrect audio source selected | Settings within the application (Audio) |
| Google Duo | Conflict with energy saving | Disable battery optimization |
It's also worth checking to see if Do Not Disturb mode or special audio enhancement features are activated, which may aggressively cancel out noise, treating your voice as background noise. In the sound settings of some models Samsung there are adaptive sound options that should be disabled during diagnostics.
If the problem appears only in one application, but in others and in regular calls the sound is normal, reinstall the problematic application or clear its cache.
Physical cleaning and inspection of holes
One of the most commonplace but common causes of poor sound is contamination of the microphone protective mesh. Dust, clothing lint, sebum and small debris clog the holes over time, significantly reducing the sensitivity of the sensor. Visual inspection with a flashlight often reveals a dense layer of dirt, which is easily removed.
For cleaning, use a soft brush with natural bristles or special adhesive tape for electronics. It is strictly not recommended to use sharp objects such as needles or toothpicks, as they can damage the microphone membrane or push dirt even deeper. Also avoid using high-pressure compressed air.
- 🧹 Gently brush a dry toothbrush along the microphone holes.
- 💨 Use a can of compressed air at minimum power (from a distance of 5 cm).
- 🧪 Wipe the housing with alcohol with a napkin, but do not allow liquid to get inside.
Pay attention to the protective cover. Some models of cases have an unfortunate design that blocks the microphone hole or creates acoustic resonance. Remove the case and check the sound quality again. If the situation improves, it may be worth choosing another accessory with more precise cutouts.
⚠️ Attention: Never try to clean the microphone holes directly with liquid. Moisture getting inside the case can lead to oxidation of the contacts and complete breakdown of the device.
Soft reset and system update
If physical methods and application checks do not produce results, a critical software failure may have accumulated in the operating system. Updating the firmware to the latest version often contains fixes for audio driver errors that may have occurred after previous updates. Check for updates in the section Settings → Software update.
In cases where the update does not help, an effective method is to reset the settings to factory settings. This procedure will delete all user data and return the phone to its original state, eliminating the influence of third-party applications and incorrect configurations. Before doing this, be sure to back up your important data in the cloud Samsung Cloud or on your computer.
☑️ Preparing to reset your settings
After performing the reset, test the microphone immediately without installing third-party applications. If the sound appears, it means that the problem was caused by some previously installed software. If silence persists even on a clean system, this indicates a serious hardware malfunction that requires specialist intervention.
How to do a soft reset without losing data?
Try to force a reboot by holding down the power and volume down buttons at the same time for 10-15 seconds. This will restart all system processes and may temporarily eliminate the sound driver software glitch.
When it’s time to contact a service center
There are a number of signs indicating that self-repair is not possible and replacement of components is necessary. If the phone was dropped into water, even if it has standard protection IP68, corrosion could damage the microphone contacts over time. Moisture destroys electronics gradually, and symptoms may not appear immediately.
Also a reason for a visit to the service is the lack of sound during all verification methods, including the engineering menu. If you hear a strong crackling sound, a whistle, or no sound at all, most likely the microphone module itself has failed or the cable inside the case has come loose. In such cases, it is necessary to disassemble the device and replace the part.
You should not ignore the problem if it affects only one of the microphones (for example, the main one), as this affects the operation of the noise reduction system. Others may complain about constant background noise, even if your voice is heard. A high-quality repair will restore not only the volume, but also the clarity of speech transmission.
Frequently asked questions (FAQ)
Why can’t I be heard only when making calls via WhatsApp, but regular calls work?
This indicates a problem with application permissions or a version conflict. Check your phone settings to see if WhatsApp has access to the microphone. Also try updating the application or clearing its cache in the “Applications” section.
Is it possible to check the microphone without an Internet connection?
Yes, all built-in diagnostic tools, including the application Samsung Members, standard voice recorder and engineering menu (code #0#), work completely autonomously and not require a network connection.
Will cleaning with a toothbrush help if the phone has been dropped in water?
Cleaning the outside will help remove dirt, but will not eliminate the consequences of moisture getting inside. If the phone gets wet, the board needs to be professionally cleaned by a service center, as corrosion can continue even after drying.
Why did the sound become quieter after updating Android?
Sometimes new software versions change sound processing algorithms or amplification levels. Try turning off Adaptive Sound or Conversation Enhancement in Settings. If it doesn’t help, there may be a software bug with a specific firmware version.
How many microphones are there in the Samsung Galaxy and what are they responsible for?
Modern models usually have 2-3 microphones. The lower main one is used for conversation, the upper one is for noise reduction and video recording, and the third (if any) can be used to record stereo sound or operate a voice assistant.