How to strengthen the microphone on Xiaomi: from basic settings to advanced hacks

Mik problems on Xiaomi smartphones are one of the most common user complaints: the interviewer does not hear your voice well, the audio you record is quiet or disturbed, and voice commands are recognized in a single time? The reasons can be due to software failures and hardware limitations. In this article, we will discuss 7 proven ways to strengthen the microphone, from simple settings to modifications to system files.

It's important to understand that not all methods are universal. 12T Pro with four microphones sensitivity setting will give a greater effect than on the budget Redmi 10A We'll show you what solutions are suitable for specific models and versions. MIUI.

Before you make any changes, check the basics: Are there any physical damage to the microphone (dust, moisture, dents), do not cover the hole with your finger during a conversation, and have the firmware updated to the latest version. If the problem persists, read on.

1. Checking and cleaning of the microphone hardware

Most often, the weak sound is not due to settings, but to contamination of microphone holes. On Xiaomi smartphones, there are usually two of them: the main one (bottom next to the USB-C connector) and the additional one (top, next to the speaker), over time, dust, pile from pockets or cosmetics get there, which reduces sensitivity.

For cleaning:

• 🧹 Use a soft brush (for example, for makeup) or compressed air (a canister!
• 💧 In case of severe contamination, gently wipe the hole with a cotton swab dipped in isopropyl alcohol (not water!).
• 🔍 Check the microphone for physical damage: cracks, dents, or traces of oxidation (green plaque).

⚠️ Warning: Don't blow into the microphone with your mouth - moisture from the breath can aggravate the problem. If the sound hasn't improved after cleaning, the microphone module itself may have been damaged (replacement is required).

On some models (such as the POCO F4 GT or Xiaomi 13 Ultra), the microphones are protected by a grid, and if it is deformed, the sound waves do not reach the membrane, in which case only the service center will help.

2.Mic sensitivity setting in MIUI

MIUI firmware (starting with version 12.5) has hidden settings for adjusting the microphone recording level, which are not available in the standard menu, but can be activated via an engineering menu or special commands.

Method 1: Through Test Mode (works on most models):

1. Open the Phone app and dial ##36446337## (code for MIUI).
2. Select Audio → Mic.
3. In the Mic Volume section, move the slider to Level 5 or Level 6 (maximum - Level 7, but noise may appear).
4. Press Set and restart your smartphone.

Method 2: Through ADB (for advanced users):

adb shell settings put global mic_gain 6

Where 6 is the gain (range 0 to 7) After completing the command, check the microphone in a voice recording application (for example, a voice recorder).

⚠️ Note: On some models (Redmi Note 11 Pro)+, Xiaomi 12 Lite changes parameters through ADB It's reset after the firmware update. To fix the settings, you need Magisk and a module. MIUI Mic Gain Fix.

If the engineering menu doesn't open, try the alternative code: ##4636## → Phone information → Select network type → Audio. On newer versions of MIUI 14, this path may be different.

Check the current version of MIUI in Settings → About the phone

Make sure the battery is more than 50% charged.

Connect to Wi-Fi (for downloading additional tools)

Back up your data (MIUI settings may reset)

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3.Use of third-party applications to amplify sound

If the system settings do not give enough effect, you can use specialized programs, which work on the principle of pre-amplification of the signal before transferring to the application (call, messenger, voice recorder).

Top.-3 apps:

• 🎤 Microphone Amplifier - a simple amplifier with Gaine Adjustment (up to) +20 dB) Supports background work. Minus: can add noise to weak microphones.
• 📱 SoundAbout – allows you to redirect audio streams and customize the microphone for specific applications (for example, amplify only in WhatsApp).
• 🔊 Wo Mic turns a smartphone into a wireless microphone for a PC with the ability to amplify the signal.

Example of settings in Microphone Amplifier:

1. Install the app from Google Play.
2. Launch and give permission to record the sound.
3. Move the Gain slider 12-15 dB (above is the risk of wheezing).
4. Activate the Run in background option.

Important: Some applications (such as Zoom or Discord) block third-party programs from accessing the microphone, in which case only root or modification of system files will help.

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Before using amplifiers, record the test audio and check it for distortion. The optimal amplification level is when the voice sounds clear, but without background hissing.

Modification of system files (Root required)

For users with unlocked bootloader and rights SuperSU/Magisk You can have more in-depth settings, and one of the most effective methods is editing a file. mixer_paths.xml, which is responsible for routing audio signals.

Instructions:

1. Install Root Explorer or FX File Explorer with access to the root folder.
2. Cross the path. /vendor/etc/mixer_paths.xml (or /system/etc/ older versions).
3. Find the lines with the microphone parameters (look for mic, input, gain).
4. Change the value for RX Digital Volume or Mic Gain (for example, from 84 to 90).
5. Save the file, set the rights to 644, and restart the device.

Example of a modified unit for the Redmi Note 10 Pro:

<path name="handset-mic">


<ctl name="ADC1 Volume" value="88" />




<ctl name="ADC2 Volume" value="88" />




<ctl name="MIC1 Boost" value="3" /> <!--Increased from 0 to 3 -->




</path>

⚠️ Attention: Incorrect editing mixer_paths.xml This can cause complete loss of sound or looping of the download.Before making changes, back up the file! on some models (Xiaomi) 11T, POCO X4 Pro) after firmware update, the file is reset.

You can use a Magisk module called MIUI Mic Boost to automate the process, which raises the signal level without manually editing configs, but it doesn't work on all devices.

5 Hardware modifications: replacement of microphone or amplifier

If software methods don't work, the problem may be a faulty microphone module or a weak signal amplifier.

• 🔧 Lower microphone (main microphone used for calls).
• 🎤 Upper microphone (for noise reduction, can be turned off when damaged).
• 🔊 Audio codecs (Qualcomm) WCD93xx Realtek – responsible for signal processing.

The cost of replacing the microphone in the service center:

Self-substitution is possible, but requires experience in soldering microscopic contacts. Xiaomi is suitable microphones from Knowles, GoerTek or AAC (part number is usually indicated on the original module).

On smartphones with IP53 protection (for example, Redmi Note 11S) after replacing the microphone, the tightness of the case is broken - the device loses moisture protection.

6. Optimization for specific use cases

Microphone amplification is not always universal, and different approaches are required depending on the task.

For calls:

• 📞 Enable Voice Improvement in Call Settings: Settings → Annexes → Phone. → Improving voice.
• 🔇 Turn off Noise Reduction (sometimes it suppresses a useful signal).
• 🎧 Use a wired headset with a microphone – it often gives better quality than a built-in microphone.

For video recording:

• 🎥 In the standard Xiaomi camera, select the Microphone → External (if a laval microphone is connected).
• 🔊 Install the Open Camera app – it lets you manually adjust the microphone recording level.
• 📱 For professional photography, use Filmic Pro with support for external microphones (Rode VideoMic, Boyya) BY-M1).

For streaming and voice chats:

• 🎮 In Discord or Twitch, activate Echo Suppression and Krisp Noise Suppression.
• 🔧 Set up the Bitrate microphone in the application settings (optimum: 96-128 kbps).
• 🖥️ For PC streams, connect your smartphone as a microphone via Wo Mic or USB-C → AUX adapter.

On Xiaomi IR-A blaster (such as the Redmi Note 10) can use a remote from old microphone systems (Karaoke) to control the signal level – but this is an exotic method that requires additional software.

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For maximum effect, combine methods: for example, cleaning the microphone + setting through the engineering menu + using an external headset.

7. Diagnostics of microphone problems

If the microphone is still not working well after all the manipulations, you need to do a diagnostic.

Test of the hardware:

1. Run the Diagnostics using the code ##6484## (or #4636## → Audio).
2. Check the Mic Test readings – if the signal level is below 30-40 dB, the microphone is faulty.
3. Connect headphones with a microphone – if the sound has improved, the problem is with the main microphone of the smartphone.

The software test:

1. Install Audio Recorder and record the sound in WAV format (without compression).
2. Analyze the recording in Audacity – if there is clipping (cutting peaks), the amplifier is overloaded.
3. Check the microphone in Safe Mode (press the power button → Safe Mode). If the sound is normal, it's third-party software.

Common mistakes and their causes:

If the diagnosis showed a hardware malfunction, and the smartphone is warranty, contact the Xiaomi service center. Self-repair will deprive you of warranty obligations.

FAQ: Frequent questions about strengthening the microphone on Xiaomi