How to permanently disable the warning “Do not close the speaker area” on Xiaomi Redmi 9C: 5 proven ways

Why does the message “Don’t close the speaker area” appear on Redmi 9C and how to remove it?

Xiaomi Redmi 9C owners often face an annoying “Don’t close the speaker area” notification that pops up when loud noises or while calling.This warning is part of the speaker protection system against overheating and mechanical damage, but its constant appearance interferes with the comfortable use of the smartphone.

The reason for the message is because of the proximity sensor and the MIUI algorithms that analyze the temperature of the speaker and the position of the device. If the system detects a potential lock on the speaker (for example, when the phone is lying down or pressed to the ear while talking), it gives a warning, but in most cases this is a false positive, especially on models with imperfect sensor calibration, like the Redmi 9C.

In this article, we’ll look at 5 working ways to disable warnings, from simple menu settings to deep changes through ADB. Importantly, some methods require super-user rights (root) or can affect warranty. If you’re unsure of your skills, start with safe options (sections 2–3).

Method 1: Disabling the warning via standard MIUI settings

The safest method is to use built-in MIUI options. It doesn't require root or PC access, but it doesn't work on all firmware versions.

1. Open the Settings app (cog icon).
2. Go to the section Sound and vibration.
3. Scroll down and select Additional settings.
4. Find Dynamic Warning (or Speaker Protection) and turn off the slider.

If there is no such item, try an alternative path:

• 🔍 Settings → Special facilities → Sound settings → Dynamic warning.
• 🔊 Settings → Annexes → Application management → Three dots (menu) → Show system-based → Find "System settings" → Warehouse → Clear cache (sometimes helps to return hidden options).

Some versions of MIUI 12-14 for Redmi 9C may not have this item. If you don't, move on to the next one.

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Before changing the sound settings, check if the “For the Elderly” mode is enabled in Special Options – it can block some options.

Method 2: Use of MIUI Hidden Settings (without root)

The MIUI Hidden Settings app allows you to access parameters that the manufacturer has hidden from the user. It does not require superuser rights, but it may not work on the latest versions of MIUI.

1. Download MIUI Hidden Settings from Google Play (or APK from a trusted source if the Play Market is not available).
2. Open the application and provide access to Settings (if requested).
3. Go to the Sound section.
4. Find Speaker Protection Warning (or Dynamic Warning) and turn it off.
5. Reboot your phone to make the changes take effect.

If the list does not have the right parameter, try:

• 🔄 Update the application to the latest version.
• 📱 Switch the system language to English (Settings) → Additionally. → Language and input – sometimes this opens up hidden options.
• 🔍 Manually search in the application by keywords: speaker, warning, dynamic.

Download the application from an official source|Provide all requested permits|Check the version. MIUI (at the Settings → The phone)|Make a backup copy of important data|Reboot your phone after the changes-->

Method 3: Disconnection through ADB-Teams (for experienced users)

If previous methods have failed, you can use ADB (Android Debug Bridge), a debugging tool that allows you to change system settings without root rights. Importantly, improper use of ADB can cause your phone to malfunction. Follow the instructions carefully.

What you need:

• 🖥️ Computer with Windows/Linux/macOS.
• 📱 USB-cable (preferably original).
• 🔧 Installed drivers Xiaomi and ADB Tools.
• ⚙️ Included debugging by USB on the phone (Settings) → The phone. → Version. MIUI → 7 times press to unlock the developer mode, then Settings → Additionally. → For developers → Debugging by USB).

Step-by-step:

1. Connect Redmi 9C to your PC and select File Transfer mode.
2. Open the command prompt (Windows) or terminal (Linux/macOS) in the folder with ADB.
3. Enter the command to check the connection: Adb devices must appear serial number of your device.
4. Execute the command to disable the warning: adb shell settings put global speaker_protection_warning_enabled 0
5. Reboot your phone: adb reboot

If the team doesn’t work, try an alternative:

adb shell am broadcast -a android.intent.action.CLOSE_SYSTEM_DIALOGS

Method 4: Editing system files (root required)

This method is only suitable for users with an unlocked bootloader and installed root access (for example, through Magisk).It involves editing system files, which can disrupt the stability of the phone or lead to loss of warranty. Use at your own risk!

Instructions:

1. Install a file manager with root support (such as Root Explorer or Solid Explorer).
2. Go to /system/media/audio/ui/
3. Find files with warning names: SpeakerWarning.ogg DynamicWarning.mp3 BlockedSpeaker.ogg

.bak

SpeakerWarning.ogg.bak

Reboot the phone.

If the warning continues to appear after that, it may be written elsewhere. Try editing the file /system/build.prop:

1. Open build.prop in the text editor (with root rights).
2. Add a line to the end of the file: persist.speaker.protection.disable=1
3. Save the changes and restart the device.

If you use custom firmware (like LineageOS or Pixel Experience), the problem may be due to a flawed build. Try reflashing the phone to the official MIUI for the Redmi 9C.

FAQ: Answers to Frequent Questions