How to increase the microphone volume on Android: from settings to the engineering menu

Have you noticed that your interlocutor has difficulty hearing you during calls, and voice messages are recorded too quietly? The problem of low microphone volume on Android smartphones is more common than it seems. The reasons may lie in hardware limitations, software settings, or even physical damage. But in 80% of cases, the situation can be corrected without contacting a service center.

In this article we will examine 7 proven methods increasing the microphone volume - from basic Android settings to working with the engineering menu and specialized applications. You will learn how to test a microphone, what parameters affect sensitivity, and what to do if standard methods do not help. We will pay special attention to Xiaomi, Samsung and Realme modelswhere the problem occurs most often.

Important: before starting changes, check whether the microphone is clogged with dust or dirt - this is the most common cause of poor hearing. Use a flashlight to inspect the microphone hole (usually located at the bottom of the case or near the main camera).

1. Checking the current microphone volume

Before increasing the volume, you need to understand how much the microphone is muted. There are several ways to do this:

• 📱 Test call: Call another phone and ask the other person to rate the volume of your voice on a scale from 1 to 10. Try speaking at different distances from the microphone (5 cm, 10 cm, 20 cm).
• 🎤 Dictaphone: Record your voice with a standard one application Dictaphone or Google Recordings, then listen to the recording. Compare with recordings on other devices.
• 🔊 Online tests: Sites like Online Mic Test or Vocaroo allow you to check the signal level microphone in real time.

If during the tests you notice that the volume drops sharply with loud sounds (limiter effect)the problem may be in software compression of audio codecs. This is often found on smartphones Samsung Galaxy series A and J.

2. Increasing volume through Android settings

Many manufacturers hide microphone sensitivity adjustment in standard settings. Here's where to look for it on popular brands:

Brand	Path to settings	What to change
Xiaomi/Redmi/POCO	Settings → Sound → Sound enhancement → Microphone	Slider "Microphone Boost" or "Sensitivity"
Samsung	Settings → Manage General Settings → Accessibility → Hearing Settings	Enable "Microphone Boost"
Realme/Oppo	Settings → Advanced Settings → Accessibility → Enhancement sound	Activate "Voice enhancement"
Google Pixel	Settings → System → Accessibility → Audio	Option "Mic gain" (requires Android 12+)

On some firmware (for example MIUI 14 or One UI 5.1) these options can be hidden. If you do not find them, proceed to the next method.

⚠️ Attention: On smartphones Huawei and Honor with firmware EMUI manual microphone settings are often blocked by the manufacturer. Attempting changes through the engineering menu may lead to resetting the network settings.

3. Using the engineering menu (MTK/Qualcomm)

The engineering menu is a hidden section of Android where you can fine-tune hardware components, including the microphone. Instructions differ depending on the processor:

For smartphones on a MediaTek (MTK) chip:

1. Open the application Phone.
2. Enter the code: ##36446337## (or ##4636## → Phone information → Select configuration).
3. Go to section Hardware Testing → Audio.
4. Select Mic Test and set the value Level to maximum (usually 255).
5. Press Set and restart the device.

For smartphones on Qualcomm Snapdragon:

1. Enter the code: ##8080## or ##4636##.
2. Select Audio → Mic.
3. Check the current values Mic Gain (usually from 0 to 6). Set to 5-6.
4. Save the settings and restart the phone.

Make a backup copy of the data

Write the current microphone settings (photo screen)

Charge the phone to at least 50%

Use the original firmware (without custom ROMs)-->

If after the changes the microphone starts wheeze or distort your voice, return the values to standard. This is a sign that the microphone hardware is not designed for such amplification.

4. Applications for microphone amplification

If standard methods do not help, try specialized utilities. They work in two ways. principles:

1. Software amplification: increase the volume of an already recorded signal (may add noise).
2. Driver amplification: change the parameters of the audio codec at the system level (requires root).

Top 3 tested applications:

• 🔊 Microphone Amplifier (simple interface, works without root, but adds background noise).
• 🎛️ SoundAbout (allows you to reassign microphones, useful for headsets).
• 🛠️ ViPER4Android (powerful audio modding, requires root and proper configuration profiles).

For ViPER4Android you will need:

1. Install Magisk and module ViPER4Android FX.
2. Select a profile in the application settings Microphone.
3. Activate Master Gain (+6 dB) and Mic Gain Control.
4. Disable Limiterif the voice is cut off.

5. Setting up the microphone for specific applications

Sometimes the microphone works quietly only in certain apps (for example, in WhatsApp, Discord or Zoom). In this case, it will help:

• 📲 WhatsApp: In the call settings, enable Voice enhancement and disable Noise reduction.
• 🎮 Discord: Go in Settings → Voice and video → Microphone sensitivity and move the slider to the right.
• 📹 Zoom: In Audio Settings disable Automatically adjust microphone volume.
• 🎵 TikTok/Instagram: Before recording turn on External microphone (even if you use the built-in one).

For streamers and gamers it is useful to use VOICEMOD or Clownfish —these apps allow you not only to strengthen the microphone, but also to add effects (echo, reverberation), masking noise.

⚠️ Attention: Automatic microphone volume adjustment may conflict with manual settings. If after changes the sound disappears completely, clear the application cache. Google Meet And Microsoft Teams Automatic microphone volume adjustment may conflict with manual settings. If after the changes the sound disappears completely, clear the application cache.

6. Hardware solutions: from cleaning to replacement

If software methods do not help, the problem may be:

• 🧹 Contamination. microphone: Dust, hair or moisture is blocking the membrane. Clean the hole with a soft brush or compressed air (do not use alcohol!).
• 🔌 Poor contact of the cable: After falls or impacts, the microphone may come off the motherboard. The phone must be disassembled.
• 🔊 Audio codec problems: The chip responsible for processing sound may fail. Diagnosed only in a service center.
• 📱 Microphone wear: Over time, the sensitivity of the membrane decreases. The average service life of the microphone is 3-5 years.

For self-diagnosis:

1. Connect headphones with a microphone - if the sound improves, the problem is in the main microphone.
2. Try to record video on the main and front cameras alternately (they have different microphones).
3. Check if the sound improves when you press the body next to the microphone (a sign of poor contact).

How to check the microphone with a multimeter?

For This will require you to disassemble the phone and unsolder the microphone. The normal resistance of a working microphone is 600–1200 Ohms. If the reading is 0 or infinity, the microphone is faulty. Please note that on some models (for example iPhone-like Android), microphones are protected against static electricity, and checking them with a multimeter may give false results.

7. Alternative solutions for critical cases

If you cannot increase the microphone volume, consider these options:

• 🎧 External microphone: Connect via USB-C or 3.5 mm jack (if available). Even inexpensive models (Boya BY-M1, Fifine K669B) will give better sound.
• 📱 Second phone: Use your old device as an external microphone via Wo Mic or Microphone (Wi-Fi or Bluetooth required).
• 🔗 Bluetooth headset: Modern models (Sony WH-1000XM5, AirPods Pro) have built-in noise-canceling microphones.
• 💻 PC as an intermediary: Connect your phone to the computer via Scrcpy and use the PC microphone to transmit sound to applications.

For professional tasks (podcasts, streams) the optimal solution will be USB audio interface (for example, Focusrite Scarlett Solo) with connection via an OTG adapter. This will cost more, but will provide studio-quality sound.

FAQ: Frequently asked questions about microphone volume on Android

Why does the microphone work quietly only in games (PUBG, Free Fire, COD)?

Most mobile games use their own audio engine, which may conflict with system ones settings. Try:

1. In the game settings, disable Noise cancellation and Echo cancellation.
2. Use an external microphone (even a cheap headset will help).
3. Install Game Tools (for Xiaomi) or Game Launcher (for Samsung) and enable the option there Improve voice chat.

If the problem persists, write to game support indicating your phone model. Some titles (for example Genshin Impact) have bugs with microphones on specific chipsets.

Is it possible to increase the microphone volume without root?

Yes, but the capabilities will be limited. Without root, you can:

• Use applications like Microphone Amplifier (gain up to +20 dB, but with noise).
• Customize the engineering menu (does not work on all firmware).
• Connect an external microphone via OTG.
• Clear the cache and data of applications where the microphone is quiet.

Root gives access to system files mixer_paths.xml and audio_effects.conf, where volume limits are set. But receiving it will void the warranty and may cause the device to break. Brick devices.

After increasing the volume, the microphone began to wheeze. What to do?

Wheezing and distortion appear due to:

1. Clipping: The signal is too loud for the microphone. Reduce gain by 20–30%.
2. Poor membrane quality: Cheap microphones cannot withstand high loads. The solution is replacement.
3. Electromagnetic interference: Turn off nearby devices (Wi-Fi router, wireless charging).
4. Incorrect codec settings: Reset the parameters in the engineering menu Mic Bias and ADC Volume to default ones.

If wheezing appears only in a specific application (for example, WhatsApp), try recording sound through other software - this will help localize the problem.

How to check how many microphones are in my phone and where they are located?

The number of microphones depends on the model:

• Budget smartphones (up to 15,000 ₽): 2 microphones (main + for noise reduction).
• Middle segment (15,000–40,000 ₽): 3 microphones (main + front + for noise reduction).
• Flagships (from 40,000 ₽): 4+ microphones (including directional for video).

To find their location:

1. Use a flashlight and a magnifying glass - microphone holes are usually smaller than those of speakers.
2. Look at the official diagram of the device on the manufacturer’s website (section Support → Manuals).
3. Run the microphone test through the engineering menu (section Audio → Mic Test).

For example, in Samsung Galaxy S23 Ultra microphones are located:

• In the lower part of the body (main).
• Next to the front camera (for selfies).
• On the top edge (noise reduction).
• On the back panel (for 8K video).

Will the microphone settings be reset after updating Android?

It depends on the type of changes:

• System settings (via Settings → Sound): Will be saved if the update does not reset user preferences.
• Engineering menu: Usually reset to default values.
• Applications (for example ViPER4Android): The settings will be saved, but you may need to re-activate the module.
• Changes in system files (with root): Almost always reset, since the update overwrites /system.

Before updating, take screenshots of the current microphone settings or write down their values. If after the update the volume drops again, repeat the settings.