The situation when during an important call the interlocutor says “no one can hear me” can unsettle any smartphone user. This is a common problem on devices with an operating system Android, which can be caused by either a software glitch or physical hardware damage. Most often, the culprit is the main microphone located on the bottom edge of the case, which becomes clogged with dust or blocked by a protective case.
However, you should not immediately take the gadget to a service center. In 80% of cases, you can fix the problem yourself by checking your privacy settings or rebooting the system. Below we will analyze in detail all the possible reasons why you cannot be heard, and we will offer a step-by-step algorithm of actions to restore the functionality of the audio path.
Primary diagnosis and identification of the source of the problem
Before proceeding with complex manipulations, it is necessary to localize the problem. The sound may disappear only in a specific application, for example, in messenger WhatsApp or Telegram, or the problem occurs in all calls, including the standard dialer. Try recording a voice note using a standard voice recorder. If the recording is played back without sound or with severe distortion, then the problem is hardware or system, and not in specific software.
It is also worth checking whether the speakerphone works. If the other person can hear you when the speaker is turned on, this may indicate a problem with the main microphone or a switch that does not activate the desired sensor in normal mode. Sometimes the system simply “sticks” to using the noise reduction microphone located on the top end instead of the main one.
⚠️ Attention: If the sound suddenly disappears after the smartphone has been dropped or moisture has entered, further self-diagnosis may aggravate the situation. In such cases, it is better to immediately contact specialists.
To quickly check the functionality of the microphone, you can use the engineering menu. On many models Samsung, Xiaomi and Pixel a special code is available for testing equipment. Enter the command #0# in the dialer and select the item Microphone. Speak into the microphone: if jumps in the volume indicator appear on the screen, the hardware is working properly, and the reason needs to be looked for in the software.
Checking physical obstacles and accessories
The most commonplace, but often ignored reason is mechanical blocking of the microphone. Manufacturers place the main microphone hole in different places: on the bottom end next to the charging connector, on the back panel or even on the side. A thick silicone case can block this hole, muffling the sound at the input.
Remove the protective case and carefully inspect the microphone area. Make sure the mesh is not clogged with pocket lint, street dust or dirt. To clean, use a soft toothbrush or special adhesive tape. Never use sharp objects such as needles or toothpicks, as you risk puncturing the microphone diaphragm or pushing dirt deeper into the housing.
Try to carefully blow out the microphone hole with compressed air (an electronics cleaning can), holding it at an angle so as not to drive moisture inside.
Also check the headset. If Bluetooth headphones or a wired headset are connected to your phone, the system can automatically switch the audio input to them. Even if the headphones are in your bag in another room, an active connection can redirect the sound. Turn off Bluetooth in the notification shade and check if sound appears during a normal conversation.
App permissions and privacy settings
Modern versions Android (starting from 10 and higher) have tightened security requirements. The application may not have access to the microphone, which is why the other party will not be able to hear you during a call over the Internet. This is a common problem after updating the system or installing new apps.
Go to the settings of your smartphone along the path Settings → Applications → [Desired application] → Permissions. Find Microphone and make sure the switch is enabled or Allow only during use is selected. If access is denied, the application simply will not be able to capture audio.
| Application | Access status | Recommended action |
|---|---|---|
| Phone (System) | Always allowed | Clear application cache |
| WhatsApp / Viber | Only when used | Check in privacy settings |
| Telegram | Requested / Allowed | Restart the application |
| Zoom / Skype | Forbidden | Give permission manually |
Sometimes resetting the settings of a specific application helps regain access. In the application information menu, press the button Stop, then go to the section Memory and select Clear cache. Do not confuse this with a complete data wipe, which will delete the chat history.
☑️ Check access rights
Influence of third-party applications and operating modes
Software conflict is another reason why the microphone may be silent. Call recording apps, voice assistants (Google Assistant, Alexa) or noise canceling software can monopolize the audio channel. If one application has captured the microphone, others will not be able to access it.
Try to start your smartphone in safe mode. In this mode, all third-party applications are disabled and only system services work. Typically, to enter you need to hold down the power button on the screen, and then hold the “Shut down” or “Reboot” icon for a long time until you are prompted to enter safe mode. If you can be heard in this mode, it means that one of the installed applications is to blame.
⚠️ Attention: In safe mode, some phone functions may be limited. Don't be alarmed if application icons become translucent - this is normal.
You should also pay attention to the sound profile modes. Some shells, for example MIUI from Xiaomi or OneUI from Samsung, have advanced sound settings. Check to see if you have a hard-restricted Do Not Disturb mode activated or a special gaming mode that can block incoming audio streams to prioritize game audio.
How to find the culprit app?
If there is sound in Safe Mode, remember what apps you installed récemment. Uninstall them one at a time, rebooting your phone to normal mode after each uninstall until the problem goes away. Often the culprits are memory cleaners or speed boosters.
System failures and software updates
Errors in the firmware can lead to incorrect operation of audio codec drivers. This often happens after an unsuccessful system update or installation of beta versions Android. If the problem appeared immediately after the update, perhaps the new software contains a bug that the developers have not yet fixed.
Check for new system updates in the menu Settings → About phone → System update. Sometimes an urgent patch is released that corrects critical sound errors. If the update has just been installed and the problem appears, you can try resetting the network settings or resetting all phone settings to factory settings (without deleting user data, if such an option is available).
In extreme cases, a full reset (Hard Reset) helps. Before doing this, be sure to back up all important data as this process will delete all information from the internal memory. To reset, go to Settings → System → Reset → Delete all data.
A common cause of sound problems after an update is a cache conflict between the old system and new files. Clearing the cache partition via Recovery Mode can help without completely resetting the data.
Hardware faults and microphone repair
If all software methods have been tried, but there is no result, most likely the problem lies in the hardware. A microphone is a consumable component that will wear out or fail over time due to changes in temperature and humidity. The cable connecting the microphone to the motherboard could also come loose, especially if the phone was recently opened or dropped.
Some smartphone models have a double or triple microphone for a noise reduction system. If one of them is broken, the audio processing algorithms may not work correctly, completely drowning out your voice while trying to filter out the "noise" that is actually your voice. Diagnosis of such a breakdown is possible only in a service center using an oscilloscope.
⚠️ Attention: Replacing a microphone requires soldering skills and the availability of special tools. Do not try to disassemble the phone yourself unless you have experience to avoid damaging the display or battery.
The cost of replacing a microphone is usually low, since the component itself is cheap. The main part of the price in the service is the work of disassembling the case and soldering. In modern monoblock smartphones, the microphone is often soldered into the bottom board (sub-board), so technicians can offer to replace the entire board, which is more expensive, but more reliable.
Before visiting the service, make a video where you demonstrate the problem (recording a voice recorder or a test call). This will help the technician quickly understand the essence of the problem.
Frequently asked questions (FAQ)
Why can’t they hear me only in WhatsApp, but regular calls work?
Most likely, the problem is in the application permissions. Go to your phone settings, find WhatsApp in the list of applications and check if microphone access is allowed. Also try updating the application via Google Play.
The interlocutor hears me very quietly and with noise, what is the reason?
This is a sign of contamination of the microphone mesh with dust or the beginning of its physical degradation. Try cleaning the hole carefully. If it doesn’t help, the microphone needs to be replaced.
They can’t hear me only on speakerphone, in normal mode everything is ok. Is this normal?
No, this is not normal. Hands-free mode usually uses a different microphone (the top one) to better capture sound. If it does not work, the contact may have come loose or the top microphone may have failed.
Will resetting the settings help if the microphone is physically broken?
No. A soft reset cannot fix a physically damaged component. If the problem is hardware, only service repair will help.
How to check the microphone without calling another person?
Use the standard “Voice Recorder” application. Record a short fragment of speech and play it back. You can also use the engineering menu by code #0# (for Samsung) or similar for your model.