If The microphone on Android stopped working, you will immediately notice this by the lack of sound in voice messages, silence during calls or a recording error in the voice recorder. Most often, the problem is caused by a software glitch, accidental blocking of access in the settings or contamination of the hole, and not by a physical breakdown of the device, so there is no need to panic ahead of time.
Before taking the device to a service center, you need to carry out an independent repair. system diagnostics. In most cases, the problem can be solved in 10-15 minutes without extra costs. We will analyze all possible scenarios: from application conflicts to hardware damage after a fall or moisture. It is important to act consistently so as not to aggravate the situation and accurately identify the source of the malfunction.
Quick diagnostics and testing of equipment
The first step should always be to check the physical condition of the device. Carefully inspect the bottom of the smartphone, where the main hole is usually located microphone. If you carry your phone in your pocket without a case, dust, lint, or dirt may have accumulated there, physically blocking the sound membrane. Gently clean the hole with a soft brush or toothbrush, but never use sharp objects to avoid damaging the mesh.
The next step is to use the built-in engineering menu to check functionality audio module. On most devices with pure Android or shells from Samsung, Xiaomi and other brands, a special code is available for testing. Enter the following combination in the dialer:
##4636##After entering the code, a menu should open Testing. Select item Phone information or Media Information (the name depends on the model). There is often a button Run Ping Test or the option to run a microphone and speaker test. If the microphone works in this menu, then the hardware is working properly, and the problem lies in the software or settings of a specific application.
If the engineering menu does not open using the code, download the "Phone Check (and Test)" application from Google Play. It will conduct a comprehensive test of all sensors, including the microphone, and show whether there is a signal to the input.
⚠️ Attention: On some smartphone models, especially with highly customized shells (for example, older versions of MIUI or EMUI), entry to the engineering menu may be blocked by the telecom operator or manufacturer. In this case, use third-party diagnostic utilities.
Checking application permissions and settings
Often users are faced with a situation where the microphone does not work only in one specific application, for example, in Telegram or WhatsApp, while there is sound in the voice recorder. This indicates a problem with access rights. In modern versions of Android, the security system strictly controls which apps are allowed to use the microphone. If you accidentally denied access when updating the system or installing new software, recording sound will become impossible.
To fix this, you need to go to the access rights settings. The path may vary slightly depending on the OS version, but the general algorithm looks like this:
- 📱 Go to
Settingsyour device. - 🔒 Find the section
ApplicationsorApplication Manager. - 🎤 Select the item
Permissionsand thenMicrophone. - ✅ Make sure that the switch opposite the desired messenger is active (green).
It is also worth checking whether the system has Do Not Disturb mode or special sound profiles that can block voice transmission during calls. Sometimes simply restarting the problematic application and completely clearing the cache helps. To do this, find the item Storage in the application menu and click Clear cache. This will not delete your correspondence, but will reset temporary files that could cause the conflict.
Conflicts with third-party software and safe mode
If the microphone does not work anywhere, and checking the permissions did not work results, a recently installed application may be to blame. Third-party call recording apps, voice recorders with effects, or even sound “optimizers” can intercept control of the audio channel and not give it back to the system. To test this hypothesis, you need to start the smartphone in safe mode.
In this mode, only system applications are loaded. If the microphone works in safe mode, then the problem is guaranteed to be third-party software. To enter, you usually need to hold down the power button on the screen, and then hold down the “Shutdown” or “Reboot” icon with your finger for a long time until you are prompted to enter safe mode. On some models, you need to hold down the physical volume down button immediately after turning on the logo screen.
After loading, you will see the words “Safe Mode” in the corner of the screen. Try calling or recording your voice. If sound appears, start deleting recently installed applications one at a time, checking the microphone operation after each deletion. Pay special attention to apps that have access to system settings.
How to exit safe mode?
Simply restart the device as usual. Hold the Power button, select Restart or Power Off, and then turn your phone back on. The inscription in the corner will disappear, and all your applications will return.
Resetting settings and updating software
Software failures in the system kernel can lead to Audio drivers no longer processing the signal correctly. This often happens after a failed firmware update or failure during the installation of security patches. First of all, check for system updates. Go to Settings → System → Software update. If a new version is available, install it - developers often release hotfixes to fix such bugs.
If the update did not help or the system has already relevant, reset application settings. This will not delete your personal data (photos, contacts), but will return all system settings to factory defaults. You'll have to reconfigure alarms, vibration feedback, and Bluetooth connections, but this often solves the microphone problem. The procedure is performed through the menu Settings → System → Reset → Resetting Wi-Fi, mobile data and Bluetooth settings (the name may vary).
As a last resort, if all else fails, a full reset to factory settings (Hard Reset) remains. Before doing this, be sure to back up your important data to the cloud or to your computer. This procedure completely erases the device, returning it to its out-of-the-box state. If after a reset the microphone is still silent, the probability of a hardware failure approaches 100%.
☑️ Preparing for a full reset
Hardware causes and physical damage
When software methods are exhausted, you have to consider physical damage. The microphone is a miniature component that is very sensitive to shock and moisture. If the phone has recently been dropped, even from a small height, onto a hard surface, the cable connecting the microphone to the motherboard may have come loose, or the membrane itself may have been damaged.
Moisture is another common enemy. Even if the smartphone is protected according to the IP67 or IP68 standard, over time the seals dry out and water can penetrate inside. Moisture causes oxidation of contacts. If you drop your phone in water, never try to dry it with a hairdryer - hot air can drive the moisture deeper or melt the glue. It is better to put the device in a container with silica gel or rice for 24-48 hours, but this does not give guarantees.
⚠️ Attention: If the phone turns on after getting water, but the microphone does not work, do not delay your visit to the service. Oxidation of contacts occurs quickly and can, over time, “eat” the tracks on the board, making repairs impossible or very expensive.
Table of main causes and solutions
For convenience, we will systematize possible problems and ways to eliminate them into a single table. This will help you quickly navigate the situation and choose the right algorithm of action.
| Symptom | Probable cause | Solution method | Difficulty |
|---|---|---|---|
| The microphone does not work in one application | No access rights | Check permissions in settings | Low |
| The interlocutor hears noise or crackling | The hole is dirty | Careful cleaning with a brush | Low |
| The sound disappeared after the update | Driver / software failure | Resetting settings or flashing | Medium |
| Complete silence after a fall | Cable loss or breakdown | Repair at a service center | High |
| The microphone works through headphones | Faulty main module | Replacing the microphone | High |
If the external microphone (in the headset) works, but the built-in one does not, this is a sure sign of a hardware failure of the main module of the phone, which cannot be solved by settings.
When a visit to the service center is necessary
There are a number of situations when independent repair is not only useless, but and dangerous. If you notice that the charging or microphone connector is loose, or if the phone gets very hot in the bottom area when you try to record audio, there are serious internal problems. It is also worth contacting specialists if the device was previously opened by unqualified craftsmen - perhaps the pressure contact was forgotten during assembly or the cable was damaged.
Replacing a microphone is a procedure that requires care. In modern smartphones, the microphone is often soldered into the bottom board (sub-board) or is part of a complex cable with charging connectors and a speaker. To replace, you will need a special tool: a hair dryer to remove the back cover, tweezers, screwdrivers and, possibly, a soldering station. If you don't have experience repairing electronics, it's best to leave it to a professional to avoid damaging other components, such as the battery or screen.
⚠️ Note: Prices for parts and labor may vary depending on phone model and region. Before starting repairs, be sure to request a preliminary estimate and clarify the guarantee for the work performed.
When contacting the service, ask the technician to show you the old faulty microphone. This is a guarantee that the part has actually been replaced and not just cleaned.
Frequently asked questions (FAQ)
Why can’t I be heard only when calling on WhatsApp, but regular calls work?
Most likely, the problem is in the settings of a specific application. Check if WhatsApp has a Data Saver mode enabled, which may limit call quality. Also try updating the application to the latest version or reinstalling it. Sometimes the conflict arises due to third-party call recording applications that intercept the audio stream.
Can I use an external microphone instead of the built-in one?
Yes, this is a great temporary solution. You can connect your headset via the 3.5mm jack (if available), via USB-C, or via Bluetooth. In the audio settings of some phones, you can select the priority input device, but most often the system automatically switches to an external microphone when connected.
Will a factory reset help if the microphone is physically broken?
No, a soft reset will not fix a physically damaged component. If the microphone membrane is torn or the contact is unsoldered, only replacing the part at a service center will help. A reset is intended only to eliminate software errors and software conflicts.
How to check which microphone is not working (main or top)?
Smartphones usually have two microphones: the main (bottom) and an additional (top) for noise reduction. Record video on the rear camera (uses the bottom one) and selfie video (often uses the top one). If there is sound in only one of the cases, you will understand which module has failed.
Does the case affect the operation of the microphone?
Yes, some tight-fitting cases, especially non-original or deformed ones, can block the microphone hole. Try removing the case and checking the sound. If the problem disappears, choose another accessory with the correct cutouts.