How to increase the microphone volume on Android during a call: a complete guide

Have you noticed that your interlocutors constantly ask you questions during calls? Or are voice messages being recorded too quietly despite the normal speaker volume? The problem of a weak microphone on Android smartphones is more common than it seems. The reasons may lie both in software limitations (for example, automatic volume control in the firmware), and in the hardware features of the device - from a microphone hole clogged with dust to membrane wear.

In this article we will look at all possible ways to increase microphone volume — from basic Android settings to hidden engineering menu options and specialized applications. It is important to understand that not all methods are equally effective: for example, on smartphones with a processor, one trick may work, but on smartphones with a processor, another trick may work. We tested the solutions on devices with Samsung Galaxy with processor Exynos one trick may work, but Xiaomi With Snapdragon - another. We tested solutions on devices with Android 10–14, but most of the instructions are also relevant for older versions.

Before proceeding with the settings, check the obvious: whether the case is blocking the microphone hole (usually located at the bottom of the case or next to the main camera), and whether there is any physical damage. If the problem appeared after a fall or moisture, it will most likely require repair.

1. Basic Android settings: checking the microphone volume

Start with the standard system tools. Most firmware has a separate control for microphone volume during calls, but it is often hidden deep in the menu. Here's how to find it:

• 📱 On pure Android (Pixel, Motorola, Nokia): go to Settings → System → Gestures → Setting call gestures. There may be an option here Voice enhancement or Sensitivity microphone.
• 🤖 On Samsung One UI: open Settings → Manage general settings → Accessibility → Hearing enhancement. Enable the option Enhance voice during calls.
• 🔧 On Xiaomi/Redmi/POCO: go to Settings → Accessibility → Sound settings and activate Microphone gain.

If there are no such items, try an alternative way: during a call, press the volume up button. On some devices (for example Huawei or Honora separate slider for the microphone will appear - you can move it to the right. Please note: this control is reset after the end of the call.

⚠️ Attention: On smartphones with Android 12+ and a dynamic permission system (for example, Oppo Reno or Realme) the Phone application may block access to the microphone. Check the permissions in Settings → Applications → Phone → Permissions → Microphone.

Another little-known trick: in some firmware the microphone volume is tied to Power saving mode. Turn it off in Settings → Battery → Power saving mode and check if audibility improves. This is due to the fact that the system can artificially limit resources to save power, including audio processing.

2. Engineering menu: hidden microphone settings

Engineering menu (Engineer Mode) is a service section of Android where you can manually configure microphone parameters, including signal gain (gain) and sensitivity. Caution: incorrect values may result in sound distortion or hardware damage! We recommend writing down the initial parameters before making changes.

To open the engineering menu:

1. Open the Phone application and enter the code:

   ##36446337##

   (for Mediatek) or

   ##4636##

   (for Qualcomm Snapdragon).

2. Select item Hardware Testing → Audio → Mic Test.
3. In the section Type specify Mic, in Level select the maximum value (usually 6 or 7).
4. Click Set and confirm the changes.

For devices Samsung use the code #0#, then go to Melody Test → MicHere you can test all microphones (main, noise reduction, for video recording) and adjust their volume separately. If option Volume locked, which means the manufacturer has limited access to these settings.

Processor	Engineering menu code	Microphone section	Max. gain value
Qualcomm Snapdragon	##4636##	Audio → Mic Test	160 (or 6 in some versions)
Mediatek (MTK)	##36446337##	Hardware Testing → Audio	255
Samsung Exynos	#0#	Melody Test → Mic	100
Huawei Kirin	##2846579##	Audio → Mic Volume	8

⚠️ Attention: On some devices (for example, Google Pixel 6/7 with a chip Tensor) the engineering menu may be missing or blocked. In this case, try the alternative methods in the following sections.

Record the original microphone settings|Use only the recommended codes for your processor|Do not change other settings unnecessarily|Reboot your phone after changes-->

3. Applications for microphone amplification: top 5 solutions

If standard methods do not help, third-party utilities will come to the rescue. We tested dozens of applications and selected those that actually work without root access. Important: some apps require permission to modify system settings (for example, via ADB), which may be unsafe.

• 🔊 Microphone Volume Booster (from Good Mood Apps): a simple interface with a gain slider up to +20 dB. Supports separate profiles for calls and recordings. Minus: shows advertising.
• 🎤 Sound Amplifier (from Google): official application for improving sound, including microphone. Works through headphones with a microphone, amplifying the signal to a customizable level.
• 🛠️ Equalizer & Bass Booster (from Smart Android Apps): has a built-in equalizer for the microphone. Allows you to raise low and mid frequencies, which makes your voice more intelligible.
• 📱 Volume Booster GOODEV: universal amplifier for speakers and microphone. In the premium version, fine-tuning of frequencies is available.
• 🔧 MTK Engineering Mode (only for Mediatek): gives access to hidden microphone settings without entering codes.

How to use these applications correctly:

1. Install the app from Google Play (avoid APKs from third-party sources!).
2. Launch and grant access to the microphone.
3. In the settings, select the mode Call Mode (for calls) or Voice Recorder Mode (for recordings).
4. Gradually increase the volume, checking the sound quality. Too high gain leads to distortion and noise.

Please note: applications like ViPER4Android or Dolby Atmos do not always work with a microphone - they are optimized for audio playback, not recording. If you need to improve your voice quality in WhatsApp or Telegram, try enable noise reduction in the settings of these messengers.

4. Setup via ADB: for advanced users

If you are ready to work with Android Debug Bridge (ADB), you can manually change the system microphone parameters. This method requires a computer and basic command line knowledge, but gives maximum control. Suitable for devices with root access and without them.

Instructions:

1. Install ADB drivers on PC and turn on USB debugging on phone (Settings → About phone → Build number — press 7 times, then return to Settings → System → For developers).
2. Connect your phone to the computer and enter in the command line:

   adb devices

   Make sure the device is detected.

3. Check the current microphone settings:

   adb shell settings list | grep mic

4. Set the maximum gain (for example, for Qualcomm):

   adb shell settings put global mic_gain 15

   The value 15 is +15 dB. For Mediatek use mic_vol instead of mic_gain.

To ensure that the changes are saved after a reboot, add the command to startup via Tasker or MacroDroidTo do this:

1. Install Tasker from Google Play.
2. Create a new task with an action Run Shell.
3. Enter the command from step 4 above.
4. Set a trigger Device Boot.

⚠️ Attention: Incorrect ADB commands may disrupt the system. If after the changes the microphone stops working at all, reset the settings before. factory default or enter:

adb shell settings delete global mic_gain

What to do if ADB does not see the device?

Make sure that USB debugging is enabled and the drivers for your model are installed. On Windows, try updating the driver manually through Device Manager (select "Android ADB Interface"). you will need to add a udev rule for your device. If the problem persists, try another USB cable (original) or port.

5. Hardware reasons for a quiet microphone: when to bring it to the service

If software methods do not help, the problem may be hardware. Here are the most common faults and their symptoms:

• 🔇 The microphone hole is dirty: dust, lint or moisture block the membrane. Symptoms: the sound becomes muffled, wheezing appears. Solution: carefully clean the hole with a soft brush or compressed air (a can for cleaning equipment).
• 🔌 Damage to the microphone cable: often occurs after dropping or disassembling the phone. Symptoms: the microphone works periodically or only in a certain position of the case. Solution: replacing the cable at the service center.
• 💧 Oxidation of contacts: if the phone has been in contact with moisture (even steam in bathroom). Signs: the sound is distorted, clicks appear. Solution: professional cleaning with alcohol or replacing the microphone.
• 🔊 Wear of the microphone membrane: sensitivity decreases over time. Signs: the sound is quiet, but without distortion. Solution: replacing the microphone (cost - from 500 to 2000 rubles, depending on the model).

How to check which microphone is not working:

1. Launch the audio recording application (for example, Voice Recorder).
2. Alternately cover each microphone hole with your finger (usually there are 2-3 of them: below, above and next to camera).
3. If the recording volume does not change when closing one of the holes, this microphone is faulty.

On some models (for example, iPhone-like Android smartphones like Meizu or Asus ZenFone) the microphones are duplicated for noise reduction. If one of them fails, the second may continue to work, but the sound quality will deteriorate. In this case, repairs will also be required.

⚠️ Attention: Do not try to disassemble the phone yourself if you do not have experience. data-i="219">or Samsung Galaxy S23 or Xiaomi 13) have fragile cables and adhesive fastening of the battery. Incorrect disassembly can lead to loss. water protection or damage to the display.

6. Alternative solutions: headset, external microphones and instant messengers

If you can't amplify the built-in microphone, consider workarounds:

• 🎧 Use a headset with a microphone: even budget wired headphones (for example, Xiaomi Basic) will give clearer sound than the built-in microphone. Wireless headsets (for example Samsung Galaxy Buds or JBL Tuneare also suitable, but make sure they support the A2DP voice protocol.
• 🎤 Connect an external microphone: via USB-C or Lightning (for Android with an adapter). Popular models: Boya BY-M1 or Rode VideoMic. An OTG cable may be required to connect.
• 📱 Take a second phone: turn on speakerphone on the main device and speak through the second phone, bringing it close to the first. Inelegant, but it works in emergencies.
• 💬 Use instant messengers with improved voice transmission: WhatsApp, Telegram or Viber has built-in noise reduction. Enable it in the call settings.

For owners Samsung DeX or users who connect the phone to a computer, there is another life hack: use a PC microphone. To do this:

1. Connect your phone to the computer via Samsung DeX or Scrcpy.
2. In the Windows/macOS sound settings, select the PC microphone as the default input device.
3. On your phone, enable audio via USB or Bluetooth (depending on the connection method).

If you often make calls for work, consider purchasing one Bluetooth headsets with noise reduction (for example, Jabra Evolve 20 or Plantronics Voyager). Such devices have their own microphones with voice amplification and noise filtering, which solves the problem at the hardware level.

7. Prevention: how to avoid problems with the microphone in the future

To ensure that the microphone of your Android smartphone lasts longer and does not lose quality, follow these recommendations:

• 🧹 Clean the microphone holes regularly from dust and dirt. Use a soft brush or a can of compressed air (not a vacuum cleaner!).
• 🚫 Avoid getting moisture. Even if the phone is protected IP68, prolonged exposure to steam (for example, in the bathroom) can lead to oxidation of the contacts.
• 📵 Do not place the phone microphone down on soft surfaces (sofa, bed) - this muffles the sound and clogs the holes with lint.
• 🔋 Keep an eye on the battery charge. When the battery level is low (below 15%), the system can automatically reduce the microphone recording quality to save energy.
• 🔄 Update the firmware. Manufacturers often release patches that fix bugs with audio (for example, there was a bug with the microphone in Android 13 there was a bug with the microphone Google Meet).

If you often make calls in noisy places (on the street, in transport), turn on noise reduction mode v call settings. On Samsung this is an option Improvement voices, on Xiaomi — Noise filter. This will not strengthen the microphone, but will make your voice more intelligible to the interlocutor.

For users who record a lot of voice (for example, for podcasts or streams), it is useful to calibrate the microphone. This can be done through applications like Voice Recorder or Audacity (on a PC Record a test fragment in a quiet room and adjust the levels so that). peak values did not exceed -6 dB —this will prevent distortion.

⚠️ Attention: Some cases with “ears” or bumpers may physically block the microphone holes. Before purchasing a case, check its compatibility with your model on the manufacturer's website.

FAQ: Frequently asked questions about microphone volume on Android

Why can my interlocutors hear me quietly only in WhatsApp, but during regular calls everything is fine?

This a common problem associated with the fact that WhatsApp uses its own audio compression algorithms. Try:

1. In the settings WhatsApp disable the option Low traffic consumption (Settings → Storage and data).
2. Update the application to the latest version.
3. Use WhatsApp Web on a computer - sometimes the sound quality is better there.

If this does not help, the problem may be in your phone's audio codecs. Try alternative messengers (Telegram or Signal) for a test.

Is it possible to increase the microphone volume without root access?

Yes, most of the methods from this article (Android settings, engineering menu, applications) do not require root. However, some advanced functions (for example, changing system files mixer_paths.xml) are only available with root.

If you are ready to get rootuse Magisk modules like Audio Modification Library. But remember: this will void your warranty and may interfere with banking applications.

After updating Android, the microphone became quieter. What to do?

Updates often reset user audio settings. Try:

1. Return the engineering menu settings to factory settings (if you changed them).
2. Clear the cache of the “Phone” application (Settings → Applications → Phone → Memory → Clear cache).
3. Roll back to the previous firmware version (if the problem is critical). To do this, use the manufacturer's official utilities (Samsung Smart Switch, Xiaomi Flash Tool etc.).

If a quiet microphone appeared after a major update (for example, from Android 11 on Android 12), check the forums (for example, 4PDA or XDA-Developers) - perhaps this is a known bug, and there is a patch.

How to check if the microphone is working on Android?

There are several ways:

• 📱 Built-in application Dictaphone: record a few seconds and listen.
• 🔊 Online services like Online Mic Test (works via browser).
• 📞 Call another phone and check the sound quality.
• 🛠️ Use the engineering menu (see codes in section 2).

If the microphone does not work at all (no response to sound), most likely there is a hardware problem.

Is it true that some cases degrade the quality of the microphone?

Absolutely. Cases with high sides or a tight fit can:

• Physically block the microphone hole.
• Create echo or reverberation (for example, cases with “ears” for iPhone-style).
• Dust and lint accumulate inside the holes.

If you notice a deterioration in the sound after installing the case, remove it and test the microphone without it. To protect the screen, use glass, not bulky bumpers.