How to remove the inscription “Do not close the speaker area” on Xiaomi Redmi 9C: all working methods

The “Don’t close the speaker area”** on the Xiaomi Redmi 9C appears when listening to music or talking through the bottom speaker if the device is down or pressed to the surface, a feature designed to protect the device from overheating and distortion of sound, but many users find it intrusive — especially when a message pops up every time you turn on speakerphone or play audio.

In this article, we’ll look at 5 proven ways to disable warnings, from simple MIUI settings to editing system files via ADB. Importantly, some methods require superuser rights (root) or can affect the stability of a smartphone. We’ll point out the risks for each option so you can choose the best one.

If you are unsure of your technical skills, start with safe ways (sections 1–2). For experienced users, methods using ADB or firmware modifications (sections 3–5) will be suitable.

1. Disable the warning via MIUI settings (without root)

The easiest way is to use the built-in MIUI options. Unfortunately, there is no direct switch in the standard Redmi 9C settings to disable this warning, but you can bypass the restriction through the developer's hidden settings.

Here's the step-by-step instruction:

1. Activate Developer Mode: Go to Settings → About Phone. Press 7 times on MIUI Version until the notification “You are a developer” appears.

Turn on USB debugging:

• Back to Settings → Additionally. → For developers.
• Activate the debugging switch over USB.
• Connect your phone to your PC and use the ADB command (see Section 3 for more details).

If this method seems complicated, try an alternative path through MIUI Hidden Settings (Section 2).

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Before activating the developer mode, make sure that the phone has the latest version of MIUI installed. In some firmware, the path to settings may differ.

2.Using MIUI Hidden Settings (without root)

MIUI Hidden Settings allows you to access hidden system settings, including speaker settings, which does not require root rights, but may not work on all firmware versions.

How to remove the warning:

• 🔕 Find the Blocked Speaker Warning option (or similar) and turn it off.

If your version of the app does not have such a clause, try updating it or using alternative methods (sections 3-5).

3. Disconnect via ADB (no root, but with PC)

The Android Debug Bridge (ADB) method is suitable for users who are willing to connect the Redmi 9C to a computer, which does not require root rights, but can disrupt the system if you do not do it correctly.

Step-by-step:

1. Install. ADB-Drivers and Platform Tools on PC.
2. Connect Redmi 9C to USB, enable Debugging over USB (see Section 1) and select File Transfer Mode.
3. Open the command line (cmd) in the folder with the platform-tools and type: adb shell settings put global speaker_protection_warning 0
4. Reboot the phone. The warning should go away.

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

adb shell settings put system speaker_protection_warning_disabled 1

Install Platform Tools on PC|Enable debugging on USB phone-on|Connect your phone to the original cable|Check the connection with the team `adb devices`-->

⚠️ Attention: Misuse of the right ADB If you're not sure about the commands, back up the data before you start.

4. editing system files (root required)

For power users who have root rights, you can turn off the warning by editing system files, which gives 100% results, but the wrong actions can lead to a device "breakdown".

Instructions:

1. Install Root Explorer or similar file manager with root support.
2. Go to /system/cust/prop/local.prop or /system/build.prop
3. Add a line to the end of the file: persist.speaker.protection.warning=0
4. Save the changes, set the rights to 644 (rw-r--r---) and restart the phone.

If the local.prop file is missing, create it manually.

5. Installation of custom firmware (for advanced)

If none of the methods worked, the radical solution is to install custom firmware (like LineageOS or Pixel Experience), which removes all the limitations of MIUI, but requires:

• 🔓 Unlocked bootloader (bootloader).
• 🛠️ Established recovery (TWRP).
• 📱 Backup data (firmware erases everything!).

The step-by-step guide to installing custom firmware is beyond the scope of this article, but you can find detailed instructions on the XDA Developers or 4PDA forums.

⚠️ Note: Installing custom firmware will void Xiaomi’s warranty and may cause the phone to run unstable. Use this method only if you understand the risks.

Alternative solutions: if nothing has worked

If all methods have proved ineffective, consider these options:

• 🔊 Use headphones or Bluetooth speakers – the warning only appears when using the built-in speaker.
• 📱 Turn off notifications for the Music app: Go to Settings → Notifications → Manage notifications. Find the Music app (or another app that displays a warning) and turn off notifications.
• 🔧 Reset the sound settings to factory: In Settings → System system → Resetting settings → Reset the sound settings.

If the problem is caused by physical damage to the speaker (such as moisture or dust), no software method will help.

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The warning, "Don't close the speaker area," is not a bug, it's a security feature, and if you turn it off, monitor the temperature of the phone for long-term sound playback.

FAQ: Frequent questions