How to increase the volume of the speaker on Xiaomi Redmi 7: from settings to engineering menu

Xiaomi Redmi 7 owners often face the problem of not loud enough from the built-in speaker — especially when listening to music, watching videos or while calling. The reasons can be different from factory restrictions of the manufacturer to dusty speakers or outdated software. But the good news is that you can increase the volume without going to the service center — just use system settings, engineering menus or specialized applications.

In this article, we will discuss 7 working methods, including safe and riskier (but effective) methods. It is important to understand that excessive amplification of sound can lead to distortion of the sound or even damage to the speaker - so we will point out all the nuances and warnings. If you are willing to experiment, start with the simplest solutions and move to complex only when necessary.

1. Checking basic sound settings

Before you resort to radical measures, make sure that the problem is not in the standard settings of MIUI. Often users simply do not notice that the volume is limited at the system level or a particular application.

Open the Settings → Sound and vibration and check:

• 🔊 Multimedia Volume – Move the slider to the maximum (sometimes it resets after updates).
• 🎵 Adaptive sound – turn off this feature if it is active (it automatically lowers volume in noisy rooms).
• 📱 Do Not Disturb – Make sure it is turned off or does not block notification sounds.
• 🔄 Resetting sound settings – at the bottom of the menu there is a reset option to factory settings (helps if the settings go wrong).

Also, check the volume directly in the app you're using, for example, YouTube or Spotify may have a separate regulator that is independent of the system, and if you do this, you'll be quiet, then you'll move on to the next step.

2. Cleaning dynamics from dust and debris

One of the most common causes of silent sound is contamination of the speaker, with dust, pile from pockets or even moisture getting into the grille over time, leading to a muted sound. On the Redmi 7, the speaker is located on the bottom of the device (near the USB-C connector).

How to clean:

• 🧹 Use a soft brush (like makeup) or a toothpick wrapped in a thin cloth. Carefully remove visible dust particles.
• 💨 A compressed air canister (sold in electronics stores) will help blow out debris from hard-to-reach places. Keep the balloon upright to avoid liquid ingress.
• 🚫 Do not use sharp objects (needles, knives) – they can damage the speaker membrane.
• 🔊 After cleaning, check the sound by playing a low-frequency test file (e.g. bass music).

⚠️ Warning: If the speaker has been exposed to moisture (e.g., the phone has fallen into water), cleaning may not help.

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To prevent dust from getting in, use a speaker-protected case or periodically blow the hole with compressed air (1 every 2-3 months).

3.Use of the Engineering Menu (MTK Engineer Mode)

Xiaomi Redmi 7 is built on a Qualcomm Snapdragon 632 processor, but MIUI has a hidden engineering menu in its firmware to fine-tune the sound settings, a method that requires caution as incorrect settings can degrade the sound quality.

Instructions:

1. Open the Phone app and enter the combination: ##4636##.
2. In the menu that appears, select Hardware testing → Audio.
3. Scroll down to Speaker and select Max Vol.
4. Increase the value by 5-10 units (standard – 150-160, do not raise above 170!).
5. Save the settings and restart the phone.

If the combination does not work, try an alternative method:

• Download the MTK Engineer Mode app from Play Market (yes, it works on Qualcomm devices as well).
• Go to Hardware Testing → Audio → Normal Mode.
• Select Speaker and increase the value of Max Vol by 10-15%.

⚠️ Warning: Exceeding Max Vol by more than 20% of the standard can cause high volume audio distortion or damage to the speaker. If there is a wheezing or crackling after the changes, return the settings back.

4.Applicants for sound amplification

If the system methods didn't work, third-party utilities will come to the rescue, and they work on two principles: either amplify sound at the software level or adjust the equalizer for better perception. We selected 3 proven applications that are compatible with Redmi 7:

How to use:

1. Download one of the apps from the Play Market.
2. Run and follow the instructions on the screen (usually you need to provide permissions to access the sound).
3. Increase the volume gradually, checking the sound quality.
4. If wheezing occurs, reduce the gain or turn off the application.

Important: Applications like Volume Booster can conflict with the system settings of MIUI. If after installation the sound is completely lost - restart the phone or remove the utility.

5. Update firmware and reset settings

Sometimes the reason for the quiet sound lies in software bugs of the current version of MIUI. The manufacturer regularly releases updates that fix the sound problems, so first of all check the relevance of the firmware:

Go to Settings → About Phone → System Update and click Check Updates. If a new version is available, install it. Note the update notes: audio-related fixes are often mentioned.

If the updates didn’t help, try resetting the sound settings to factory:

1. Open Settings → System → Additional → Resetting settings.
2. Select Resetting Sound Settings (not to be confused with a full phone reset!).
3. Confirm the action and restart the device.

⚠️ Warning: Wipe Data will delete all data, including photos and apps, only use it if other methods have failed, and back up beforehand via Settings. → System system → Backup.

1. Save contacts in Google account

2.Transfer the photos to the computer or cloud

3. Write down passwords from Wi-Fi and apps

4. Make sure the phone is at least 50% charged-->

6. Integrity check speaker (diagnostics)

If neither method worked, it could be a hardware problem, the speaker or the audio chip itself, and you can check this with the built-in test.

Enter the combination in the Phone app: ##6484##. This will open the Manual Test Mode menu where you need to select:

• Speaker – speaker test (must be played sound).
• Receiver – test of the top speaker (for conversations).
• Microphone – Check the microphone (in case the recording device is having a problem).

If the sound is missing or severely distorted:

• 🔧 Contact the Xiaomi service center – you may need to replace the speaker (cost) ~800-1500 rubles).
• 🛠️ If the phone is warranty, do not try to repair yourself - this will void warranty obligations.

Also check if the sound is drowned out by the cover. Some protective covers cover the speaker's opening, which results in a muffled sound. Take off the cover and test the sound without it.

7. Alternative methods (for advanced users)

If you're willing to take risks for maximum volume, consider these options: They require root rights or an unlocked bootloader, which can lead to a loss of warranty.

Method 1: File editing mixer_paths.xml

This file contains volume settings for all audio devices, so you can change it:

1. Get root access (for example, through Magisk).
2. Use Root Explorer or Solid Explorer to get on the way: /system/vendor/etc/mixer_paths.xml.
3. Find the rows with the rx-vol-dB parameters for the speaker and increase the values by 3-5 dB.
4. Save the file, set the rights to 644, and restart the phone.

Method 2: Installation of a custom core

Some custom cores (e.g. FrancoKernel) offer advanced audio settings, but this method is only suitable for advanced users, as it requires:

• Unlock the bootloader (fastboot oem unlock).
• Installations of custom recavery (TWRP).
• Backup of the current firmware.

⚠️ Warning: Incorrect editing of system files or installing an incompatible kernel can lead to a "brick" of the phone (complete failure.

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Before any manipulation of system files, be sure to back up via TWRP or MIUI Backup, which will allow you to restore the phone in the event of a crash.

FAQ: Frequent questions about volume up on Redmi 7