How to Make Speaking Speaker Louder on Xiaomi Redmi Note 7: All Ways From Simple to Advanced

Why is the speaker on the Redmi Note 7 quiet?

Owners of the Xiaomi Redmi Note 7 often face the problem of low volume conversational speaker — especially in noisy places or when using a headset. The reasons can be several: from banal clogging of the grille to the software limitations of MIUI. Before you start settings, it is worth checking the obvious points.

First, make sure that the problem is not physical damage: the speaker may have been clogged with dust, moisture or mechanical damage. Second, check whether Do Not Disturb or Quiet in settings is activated. And finally, it is possible that the quiet sound is a consequence of the MIUI update, after which the individual audio parameters were reset.

If the basic checks didn't work, we'll move on to deeper settings, start with the safest methods, and gradually get to the advanced ones, including the engineering menu and the modification of system files.

1. Basic sound settings in MIUI

The first step is to check the standard sound settings, and users are often unaware of the existence of separate controllers for the speaker.

Settings → Sound and vibration → Loudness

And you'll see some sliders here. Notice that:

• 🔊 Media – the volume of music and video (does not affect the speaker).
• 📞 Calls – regulates the volume of incoming calls.
• 💬 Alarms and notifications – does not affect the speaker.
• 🎤 The speaker speaker -- this slider is the one that controls the volume of calls -- is often overlooked!

If the speaker slider is already at its maximum, but the sound is still quiet, try resetting the sound settings to the factory.

Settings → System → Resetting settings → Resetting sound settings →

⚠️ Warning: Resetting the audio settings will return all parameters, including individual ringtones and vibrations, to default values.

2. Cleaning dynamics from dust and debris

Physical clogging is one of the most common causes of quiet sound. On the Redmi Note 7, the speaker is located at the top of the screen, next to the front camera, and its grille gets clogged with dust, too fat deposits and fine debris over time.

Do not use sharp objects (needles, toothpicks) to clean - they can damage the speaker membrane.

• 🧴 Soft brush (for example, a toothbrush with soft bristles) - carefully run the speaker on the grille.
• 💨 Compressed air canister - blow out the dust with short presses. Hold the balloon vertically to avoid liquid intrusion.
• 🧲 Scotch or sticky tape - glue the piece to the grille and sharply tear (repeat) 2-3 once).

If the speaker is clogged with moisture (for example, after rain or liquid hit), dry it without a hair dryer - just leave the phone in a dry place for 12-24 hours. You can not accelerate the process with heating: this can deform the membrane.

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After cleaning, check the sound in a quiet room, if the volume is up but there is still wheezing or distortion, the speaker may have damaged, in which case you will need to replace.

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

The engineering menu is a hidden tool for fine-tuning hardware components. On the Redmi Note 7 (as on most Xiaomi smartphones), it allows you to increase the volume of the speaker beyond the standard limits. Careful: improper settings can lead to distortion of the sound or damage to the speaker.

To get into the engineering menu:

1. Open the Phone app.
2. Enter the combination: ##36446337## (or #4636## for the alternative menu).
3. Select Hardware Testing → Audio → LoudSpeaker Mode.

In this section, you'll see Max Vol settings for different scenarios.

• Sph is a conversational speaker (speech).
• Sph2 is an additional microphone (if any).
• Ring is the volume of the call.

By default, the values are in the range 0-160. Try to increase the Sph to 180-200, but not above 220 - this can lead to a distortion of the sound or overheating of the speaker. After changes, press Set and restart the phone.

⚠️ Attention: Increasing volume through the engineering menu does not guarantee stable operation. If the limits are exceeded, the speaker can start to wheez and in the long run - fail. 10-20 one-off.

Record the current parameter values|Do not exceed the value of 220 for Sph|Check the sound after each change.|Make a backup copy of settings (optional)-->

Modification of system files (for advanced users)

If standard methods don't work, you can try changing the system files that control volume, which requires root rights and is only suitable for advanced users, and doing the wrong thing can lead to loss of warranty or build-up of the device.

The main files that can be modified:

For file editing:

1. Get root access (for example, through Magisk).
2. Use a root-enabled file manager (such as Root Explorer or Solid Explorer).
3. Make a backup copy of the original files!
4. Edit the settings and save the changes.
5. Reboot the phone.

If the sound is distorted or background noise is added after the changes, return the original values, and note that after the MIUI update, all edits may be reset.

5. Sound amplification applications

If you don't want to dig into the settings or you're afraid of damaging the system, you can use third-party applications that are software-level and do not require root rights, but their effectiveness depends on the phone model and the version of MIUI.

Top.-3 Proven applications for Redmi Note 7:

• 🔊 Volume Booster – Increases volume by 20-30% Minus: You may get a slight distortion at maximum volume.
• 🎛️ Equalizer FX — It allows you to tune the equalizer and amplify certain frequencies, which is useful if the problem is with the deaf sound, not the general volume.
• 📱 SoundAbout – redirects sound from the speaker to the main speaker (useful if the first is damaged).

Check reviews on 4PDA or XDA Developers before installing - some applications may conflict with MIUI 12/13. Also note permissions: if the application requests access to contacts or SMS for no reason, it is better to refuse to use it.

⚠️ Attention: Sound amplifiers do not increase the physical power of the speaker, but only modify the signal. This can lead to overload and accelerated wear of equipment. Do not use them at maximum volume for a long time.

6. Hardware malfunctions and when to contact the service

If none of the software methods worked, the problem is probably with the hardware.

• 🔈 Dynamics – the membrane may break with time or mechanical impact.
• 🔌 Dynamic plume - oxidized or departs from the board.
• 📱 Audio codec is a chip responsible for processing sound (less often, but also happens).

Signs of hardware malfunction:

• The sound disappears completely or appears with a delay.
• Extraneous noises: crackling, wheezing, whistling.
• The speaker only works at a certain volume (for example, it is quiet at 50% and normal at 100%).
• The problem occurred after falling or getting moisture.

Cost of repairs in service centers:

If the phone is warranty-free, don’t try to repair it yourself – contact the official Xiaomi service center.Otherwise you risk losing the warranty.For the Redmi Note 7, the warranty period is usually 12 months from the date of purchase.

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Make a backup before visiting the service. In some cases (for example, when changing the fee), you may need to completely reset your phone.

FAQ: Frequent questions about the volume speaker on the Redmi Note 7