Are you trying to record a voice message in WhatsApp on your Xiaomi Redmi, but the microphone does not work? Or the other person can’t hear you during a call? The problem most often lies not in a hardware failure, but in the settings of the system or the messenger itself. In this article we will analyze all possible reasons - from basic permissions to hidden functions MIUIthat can block access to the microphone.

A feature of smartphones Redmi (for example, models Note 10/11/12, Redmi 9/10 or flagship K50/Pro) is aggressive optimization battery and background application activity. WhatsApp often falls under these restrictions, which leads to microphone malfunctions. In addition, after updates MIUI 13/14 or the WhatsApp settings may be reset. We will consider solutions for all versions of the firmware and application.

Important: if the microphone does not work all applications (including the voice recorder or camera), the problem may be hardware - check the headphone jack or contact service. This instruction focuses specifically on software malfunctions in WhatsApp.

1. Checking basic permissions for WhatsApp

The first thing you need to do is make sure that WhatsApp has system-level microphone access. In MIUI permissions may be reset after updates or factory resets.

Open Settings → Applications → Manage applications and find WhatsApp in the list. Tap on it and select Permissions. Make sure the switch next to Microphone is turned on (should be blue). If the option is disabled, activate it and restart the messenger.

  • 🔍 Check all permissions: in addition to the microphone, WhatsApp must have access to Contacts, Storage i Camera (for video calls).
  • 🔄 Reboot: after change permissions required reboot your smartphone - this will reset the system cache.
  • 📱 MIUI Version: on MIUI 14 the path to permissions may differ - look for Settings → Privacy → Application Permissions.

If microphone permission is already enabled, but the problem persists, proceed to the next step. Sometimes MIUI blocks access to the microphone at level security —this will be discussed further.

📊 What Redmi model do you have?
Redmi Note 10/11/12
Redmi 9/10/9A
Redmi K40/K50
Another model

2. Security and optimization settings MIUI

Xiaomi is known for its optimization system, which sometimes saves battery power too zealously by blocking background processes. WhatsApp may be subject to these restrictions, resulting in the microphone being muted during calls or voice recordings.

To fix this:

  1. Go to Settings → Battery and performance → Manage battery consumption by applications.
  2. Find WhatsApp in the list and select No restrictions (or No restrictions in new versions MIUI).
  3. Go back and open Settings → Special permissions → AutostartMake sure that WhatsApp autostart enabled.

Also check your security settings security:

  • 🛡️ Open Settings → Privacy → Special access → Microphone access and make sure WhatsApp is in the allowed list.
  • 🔒 If you use Second space or Mode for guests, the microphone may be disabled globally - check the profile settings.

Remove battery restrictions for WhatsApp

Enable application autostart

Check special access to the microphone

Disable power saving mode (if enabled)-->

⚠️ Attention: On some firmware MIUI (especially custom) can be enabled mode incognito for microphone - it blocks access to all applications. To disable it, go to Settings → Privacy → Incognito mode and deactivate the option.

3. Microphone settings inside WhatsApp

Sometimes the problem lies not in the system, but in the messenger itself, WhatsApp has its own microphone settings, which can go wrong after. updates.

Open WhatsApp, tap on the three dots in the upper right corner and select Settings → Storage and data. Check here:

  • 🎤 Recording quality: if set Low, the voice may be transmitted with interference. Try setting High (but this will increase the size of voice messages).
  • 🔇 Disable noise reduction: in some versions of WhatsApp this feature does not work properly. Disable it in Settings → Storage and data → Call quality.
  • 🔄 Reset settings: in the same menu, click Reset media settings - this will return the microphone parameters to the factory settings.

If you use beta version of WhatsApp, some microphone functions may be unstable. Check for updates in Google Play or roll back to the stable version.

Problem Possible cause Solution
The microphone does not work only in voice messages Incorrect recording quality settings Set High quality in the WhatsApp settings
Interlocutor hears echo or interference Noise cancellation or AGC (automatic volume control) is turned on Disable the option in Settings → Storage and data → Call quality
The microphone only works after reboot MIUI blocks WhatsApp background activity Disable battery optimization for the application
In calls, the microphone turns off after 10-20 seconds Traffic or battery saving mode is activated Disable power saving modes in MIUI settings
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If after changing the settings the microphone still does not work, try clearing the WhatsApp cache. To do this, go to Settings → Applications → WhatsApp → Storage and click Clear cache. Chat data will not be deleted.

4. Checking hardware settings and connected devices

If the microphone does not work only in WhatsApp, but functions properly in other applications (for example, a voice recorder), the problem may lie in a conflict with connected accessories or sound settings.

The following steps will help diagnose hardware causes:

  1. Disconnect everything Bluetooth devices (headphones, speakers, smart watches). Sometimes WhatsApp mistakenly uses the microphone of the connected gadget, even if the sound comes through the smartphone's speaker.
  2. Check whether Airplane mode or Do not disturb mode —they can block access to the microphone.
  3. If you use wired headphones, try turning them off and recording a voice message through the built-in microphone.
  4. Go to Settings → Sound and make sure that in the section Input (or Microphone) the main microphone of the smartphone is selected, and not the external device.

On some models Redmi (for example, Redmi Note 11 Pro+) there is a separate game mode, which can affect the operation of the microphone. Disable it in Settings → Accessibility → Game mode.

What to do if the microphone only works in headphones?

If WhatsApp recognizes the microphone only when headphones are connected, the problem may be damage to the main microphone of the smartphone (for example, after dropped or exposed to moisture). In this case:

1. Check the microphone in other applications (voice recorder, camera).

2. Clean the headphone jack from dust or debris - sometimes the system incorrectly detects a “connected device.”

3. If the warranty is valid, contact the service center Xiaomi for diagnostics.

5. Updating WhatsApp and MIUI firmware

An outdated version WhatsApp or firmware MIUI may cause conflicts with the microphone. Developers regularly fix bugs related to access to hardware components.

To update WhatsApp:

  1. Open Google Play Store.
  2. In search, enter WhatsApp and open the page applications.
  3. If there is a button Update, press it. If there is no button, you already have the latest version installed.

To update MIUI:

  1. Go to Settings → About phone → System update.
  2. Click Check for updates and install the available packages.
  3. After updating reboot the smartphone is required to apply the changes.

If updates do not help, try roll back to the previous version of WhatsApp. To do this:

  • Delete the current version of the messenger.
  • Download the old version APK file from a trusted source (for example, APKMirror).
  • Install the file by first allowing installation from unknown sources in Settings → Privacy → Special permissions.
⚠️ Attention: Installing APK from third-party sources may be is unsafe. Before installing, check the hash of the file on the website APKMirror and disable installation from unknown sources after completing the procedure.

6. Resetting settings and extreme measures

If none of the previous methods helped, you may need more radical measures. solution. Start by resetting WhatsApp:

  1. Open Settings → Applications → WhatsApp.
  2. Click Storage → Clear data (this will delete all settings, but will not affect chats, if they are saved in the cloud).
  3. Restart the application and re-configure access to the microphone.

If the problem persists, perform reset all network settings:

  1. Go to Settings → SIM cards and mobile networks → Reset network settings.
  2. Confirm the action. This will reset the Wi-Fi, Bluetooth and mobile network settings, but will not affect personal data.

In the worst case scenario, it may. required full reset of the smartphone (hard reset). Before doing this, be sure to:

  • 🔄 Make a backup copy of your data via Settings → Advanced → Backup and reset.
  • 📱 Save a backup of your WhatsApp chats in Settings → Chat → Backup.
  • 🔑 Write down or take a photo of important passwords and logins.

After the reset, set up your smartphone again and check the microphone functionality in WhatsApp. If the problem disappears, it means it was related to a settings conflict MIUI.

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Before completely resetting your smartphone, try creating a new user in MIUI (Settings → Users) and check the operation of WhatsApp under it. If the microphone works, the problem is in the settings of your main profile, and not in the hardware.

7. Diagnosis of hardware faults

If after all the manipulations the microphone in WhatsApp still does not work, but functions properly in other applications, the problem may be due to:

  • 🔧 Damage to the microphone (for example, after a fall or moisture).
  • 🔌 Dirty connector (dust or debris can block the contacts).
  • 📶 Conflict with the communication module (rare, but happens when the antenna unit is faulty).

For diagnostics:

  1. Try to record a voice message in another messenger (for example, Telegram or Viber).
  2. Use the built-in dictaphone to record voice.
  3. Connect headphones with a microphone and check whether recording through them works.

If the microphone does not work in any application, you will most likely need repairContact a service center Xiaomi or a trusted repair center. The average cost of replacing a microphone with Redmi is from 800 to 2000 rubles (depending on the model).

⚠️ Attention: Before visiting the service center, turn off MIUI data protection (if enabled) in Settings → Xiaomi Account → SecurityThis will allow the technician to test the microphone without blocking.

FAQ: Frequently asked questions about the microphone in WhatsApp on Redmi

🔊 Why does the other party hear me intermittently or with a delay?

This may be due to:

  • Unstable Internet connection (switch to 4G or Wi-Fi).
  • Enabled traffic saving mode in WhatsApp (disable it in the messenger settings).
  • Conflict with VPN or firewall (disable them temporarily call).

Also try disabling noise reduction in the WhatsApp call settings.

📱 After updating MIUI, the microphone stopped working. What should I do?

Updates MIUI Sometimes permissions for applications are reset. Do the following:

  1. Check permissions for WhatsApp (see Section 1).
  2. Clear the WhatsApp cache in Settings → Applications → WhatsApp → Storage.
  3. Disable battery optimization for messenger.
  4. If the problem persists, roll back to the previous firmware version via Settings → About phone → System update → Three dots → Select update package (you will need to download old firmware from the website Xiaomi).
🎧 The microphone only works in headphones. How to fix?

This is a sign of a malfunction of the main microphone of the smartphone Possible. reasons:

  • Damage to the microphone (for example, after a fall).
  • Moisture or dust ingress into the microphone module.
  • Oxidation of contacts on the motherboard.

Solutions:

  1. Clean the connector for headphones (sometimes the system mistakenly detects the “connected device”).
  2. Check the microphone in Safe Mode (press and hold the power button → Safe Mode). If the microphone works in it, the problem is in third-party software.
  3. Contact the service center for diagnostics.
🔇 You can hear an echo or noise in voice messages. How to remove?

Echoes and noise usually appear due to:

  • Enabled noise reduction in WhatsApp (turn off in Settings → Storage and data → Call quality).
  • Using a speaker instead of headphones (try connecting a headset).
  • Conflicts with other applications that use a microphone (for example, voice assistants).

Also check if special is not enabled Voice Amplifier mode in the settings capabilities MIUI.

🔄 After rebooting, the microphone works, but then disappears again. What's wrong?

This is a typical sign that WhatsApp is blocking background activity Solutions: MIUI blocks WhatsApp background activity. Solutions:

  1. Disable battery optimization for WhatsApp (see Section 2).
  2. Add WhatsApp to Auto-cleaning exceptions to Settings → Battery → Battery optimization.
  3. Check whether mode "Deep optimization" is enabled in the developer settings (if so, disable it).

If the problem persists, try disabling adaptive battery in the developer settings (Settings → About phone → MIUI version - tap 7 times, then return to Advanced → For developers).