How to disable the message “Do not close the speaker area” on Xiaomi Redmi Note 8T

Users of budget and mid-budget smartphones from Xiaomi often face intrusive system notifications that block part of the screen during calls. This problem is especially relevant for the Redmi Note 8T model, where the message “Do not close the speaker area” can appear at the most inopportune moment. This notification not only blocks the interface of the Phone application, but also sometimes leads to the fact that the interlocutor stops hearing you due to the software locking of the main microphone.

The problem lies in the algorithms of the MIUI operating system, which tries to protect the main microphone from overlapping with a finger during a conversation. However, in practice, proximity sensors and light sensors often work incorrectly, especially if the screen is installed a protective film or glass with a wide black frame, as a result, the system mistakenly believes that the speaker is closed, and displays a warning, ignoring the real needs of the user.

Solving this problem requires a comprehensive approach, since there is no simple “Disable” button in standard audio settings. You will have to use hidden engineering menus, check the status of sensors or even change the access parameters for system applications. In this article, we will discuss in detail all working methods for eliminating this error, from simple settings to deeper interventions in the system.

Reasons for System Warning

The main reason for the "Don't close the speaker area" label is the conflict between the proximity sensor readings and the software. The Redmi Note 8T smartphone features a front-facing camera and sensors located at the top of the screen. When you hold the phone to your ear, the sensor must turn off the screen to avoid accidental cheekstrokes. If the sensor is contaminated, taped or has a software failure, the system thinks that you've covered the area of the main microphone with your finger.

Another important reason is the presence of a black-edged protective glass, and many users, in order to protect the display, buy glass that completely covers the top of the body, including the sensor area. This looks like a permanent overlap to the system, which causes the system notification, and the problem can be incorrect calibration of the sensors after changing the screen or getting moisture inside the case.

Do not exclude the software bugs of the shell itself. MIUI. In some firmware versions, the closed microphone algorithm is too aggressive, and can respond to even minimal changes in light in the sensor area, interpreting this as an attempt by the user to close the speaker with his hand. This leads to a constant pop-up of the window, which has to be constantly brushed.

⚠️ Note: If the message appears immediately after the display is replaced with a non-original one, the problem may be physical. Cheap copies of screens often have proximity sensors with different sensitivity that incorrectly interact with the motherboard.

Sensor status check and calibration

Before we go into radical measures to disable features, we need to make sure that the hardware is healthy. Xiaomi smartphones have a hidden engineering menu that allows you to test all the components of the device. This is the first step in diagnostics that will help you understand whether the problem is physical or software. To enter the test menu, a special code that works on most devices with a MIUI shell.

Open the Phone app and dial the combination ##6484##. Once you enter the last digit, the CIT menu automatically opens. In the test list, you need to find the item associated with the proximity sensor (usually called the Proximity Sensor). Press it and hold your finger to the top of the screen. The indicator on the screen should change the value from 5.0 to 0.0 (or vice versa), responding to your movement.

If the sensor doesn't respond or the readings jump without touching, calibration is required. Go back to the main CIT menu and find the Proximity Sensor Calibration. Follow the instructions on the screen: usually close the top with your palm, then remove your hand and press the confirmation button. After successful calibration, restart the device. This action often eliminates the false positives that cause the closed speaker to appear.

It is important to note that calibration does not always help if the sensor is physically faulty or heavily contaminated, in which case even the software settings will not be able to correct the situation. (cleaning) the area around the front camera with an alcohol wipe can also be a temporary solution if the problem is caused by greasy spots from the fingers.

Disconnection through special features settings

One of the most effective software ways to remove an annoying notification is to change the settings in the special features section. Here's a feature that's directly related to controlling sound during calls. MIUI algorithms use this switch to activate the closed speaker mode, and turning it off can solve your problem.

Go to the Settings menu, then select Advanced Settings (or Additional). Find Special Options. In the list that opens, look for a tab or section related to physical limitations or hearing. This is where the "Noise Removal" or "Do not close the speaker area" option is often hidden. The name may vary slightly depending on the firmware version and region.

If you find a switch with a similar name, try deactivate it. However, in newer versions of MIUI, this path may be hidden. In this case, try an alternative route: Settings → Sound and vibration → Additional audio settings. There may also be noise reduction options that indirectly affect the microphone and the appearance of warnings.

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If the standard settings do not work, try temporarily disabling the Smart Noise Canceling feature in the settings of the Phone app itself through three dots in the corner of the screen.

Consider that disabling these features can cause the conversation in a noisy place, the interlocutor will hear more background noise. Noise cancellation is a useful feature, but on the model Redmi Note 8T its implementation often conflicts with the sensors, you have to choose between the absence of the label on the screen and the perfect sound quality in windy weather.

Using an engineering menu to disable the function

A deeper method of solving the problem is through an engineering menu that allows you to change the parameters of the modem and audio system, which requires caution, since changing the wrong parameters can lead to unstable communication. However, for the Redmi Note 8T model, there is a proven way to disable the check of the speaker area.

Use the code ##3646633## again to log into the engineering menu (if the first code didn't open full access). Go to the Hardware Testing tab, then select Audio. In this section, you'll need to find the settings associated with the conversation mode (Normal Mode or Headset Mode).

The specific parameter that needs to be changed is often called DMNR (Dual Microphone Noise Reduction) or is associated with voice processing algorithms. Decreasing the sensitivity level or switching the noise reduction algorithm to another preset (for example, from General to Handset) can remove the false alarm protection. After making the changes, be sure to press the Set button and restart the phone.

Configure the permissions of the “Phone” application

Sometimes the problem is not the system drivers, but the access rights of the call app itself. The MIUI shell strictly controls the permissions, and a failure in this module can cause an error. Verification and reinstallation of permissions can shake up the system and remove the bug.

Go to Settings → Applications → All Apps. Find the Phone app (green tube icon, system) in the list. Go to Permissions. Make sure that access to the microphone is allowed. Try denying access first and then allowing it again. This action initiates a re-registration of the audio service.

Also worth checking the battery settings for this app. In the Phone app menu, select Activity Control and set No Limits. Aggressive energy saving can kill the processes responsible for monitoring sensors during a conversation, leading to a misidentification of the speaker's state.

Additionally, you can try to clear the cache of the Phone app. In the same app settings menu, click Memory → Clear the cache. This won't delete your contacts or call history, but will reset temporary files that may have accumulated configuration errors.

Additional methods and installation of third-party solutions

If Xiaomi’s regular funds didn’t help, you can resort to installing third-party apps to manage calls. There are alternative “callers” from Google Play that ignore the system limitations of MIUI. For example, the True Phone app or the standard Google Phone (if it’s not installed by default) may not use the same speaker protection mechanism.

When installing a third-party call app, the system will ask for permission to use it by default.Agree to that.The call interface will change, and the system message "Don't close the speaker area" belonging to the MIUI shell will most likely stop appearing, as the new app will use its own audio management drivers.

Another radical method is to reset all phone settings, which is an extreme measure that requires a full data backup. Go to Settings → About Phone → Reset → Erase all data. This will return the device to a factory state where software conflicts caused by updates or installing questionable software will be eliminated.

⚠️ Before performing a full reset, be sure to save all important photos, contacts and documents to a cloud disk or computer.

Frequently Asked Questions (FAQ)

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The safest and most effective way is to calibrate the proximity sensor through the CIT engineering menu, as it eliminates the root of the problem, rather than simply hiding the symptom.