How to increase the sound on Xiaomi Redmi Note 7: from standard settings to hidden features

The sound on the Xiaomi Redmi Note 7 is too quiet? Do you set the volume to maximum, but still can not hear music, videos or calls? The problem is familiar to many owners of this smartphone - despite the presence of stereo speakers, factory settings often limit the volume due to software limits or firmware features. In this article, we will discuss all working ways to increase the sound, from basic Android settings to hidden parameters of the engineering menu and third-party utilities.

It's important to understand that quiet sound isn't always hardware-related. 80 percent of the time, it's software-based -- just know where to change it. We tested each method on the Redmi Note 7 with MIUI 12-14 firmware (including global and Chinese versions), so the instructions are relevant for most users. If the sound is weak after all the manipulations, check the speakers for physical damage or contamination.

Before you start settings, make sure that the problem is not the following:

• 🔇 Stubs on speakers: after purchase on some devices remain protective stickers.
• 🎧 Connected headphones: smartphone can “think” that they are inserted, and turn off speakers.
• 🚫 Do Not Disturb or Energy Saving Profiles that Limit Sound.

1. Standard volume settings in MIUI

Start with the basics — maybe the sound is limited at the system level. MIUI has separate regulators for media, calls and alarms, and hidden options for amplifications.

Open Settings → Sound and vibration.

• 🔊 Multimedia Volume: A Slider for Music, Video and Games.
• 📞 Call volume: separately regulated for calls.
• 🔔 Notifications: sounds of messages and alerts.
• 🎵 Equalizer: Click on “Additional settings» → «Sound equalizer" to match a profile (e.g., "Bases" or "Rock»).

Note the Volume Amplifier option (if you have one in your MIUI version) that appears after upgrading to MIUI 13+ and allows you to increase the maximum sound level by 10-15%. Activates in the same Sound and Vibration section → Additional settings.

⚠️ Warning: If the sound becomes hoarse or distorted after the settings change, return the sliders to their original position, which is a sign that the speakers are operating at the power limit.

2. Engineering menu: hidden parameters of sound

The Engineering Mode is an Android service section where you can fine-tune hardware components, including speakers, and on the Redmi Note 7, it is accessed through code:

##36446337##

After you enter, the "Engineer Mode: MTK" menu will open (if you have a Qualcomm Snapdragon 660 processor, use the code ##4636##). Go to Hardware Testing → Audio → LoudSpeaker Mode.

Here you will see the parameters:

• 🔧 Type: Choose Media (for multimedia) or Ring (for calls).
• 📊 Level: Current volume level (0 to 160).
• 🔉 Max Vol: Maximum value (default 160).

To turn up the volume:

1. In the Level field, enter 170-190 (not higher than 200!).
2. Press Set, then Play to test the sound.
3. If there is no distortion, save the settings with the Back button.

Enter the code ##36446337##

Go to Hardware Testing → Audio

Choose Media or Ring type

Set Level to 170-190

Test the sound with the Play button-->

⚠️ Attention: Exceeding the Level Value = 200 can damage the speakers. Optimal range is 170-185 for the Redmi Note 7.

3. Sound amplification applications

If standard methods don't work, use third-party utilities that work at the system level and can bypass MIUI limitations.

To install ViPER4Android on Redmi Note 7 without root:

1. Download APK with XDA Developers.
2. Install Magisk and the ViPER4Android FX module.
3. In the application settings, select the Legacy Mode driver.
4. Activate your Extreme profile or set up your equalizer manually.

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If the sound is gone after installing the app, restart the smartphone. Some utilities conflict with MIUI and require restarting the audio system.

Cleaning of speakers from dust and debris

Over time, the Redmi Note 7 speakers accumulate dust that drowns out the sound, and you can clean them without disassembling the body:

• 🧹 Soft brush: walk gently through the speaker grilles (don't press!).
• 💨 A tank with compressed air: blow out dust with short pulses.
• 🎵 Clog test: turn on a song with deep bass - if the sound "bursts", the speaker is clogged.

For deep cleaning:

1. Remove the back cover (requires a mediator and a hair dryer to soften the glue).
2. Disconnect the speaker plume and blow it from the inside out.
3. Check the membrane for damage - if it is torn, the speaker must be replaced.

5. Update firmware and reset settings

Sometimes quiet sound is a firmware bug. Xiaomi regularly releases updates to fix audio problems.

1. Go to Settings → About the phone → System update.
2. Click on “Check Updates” and install the latest version of MIUI.
3. If the update doesn’t help, try resetting to factory settings:

Settings → Additional → Recovery and Reset → Resetting settings

Before resetting, back up your data!

• 🔄 The sound will return to the factory settings (maybe it will get louder).
• 📱 Install applications again – some utilities (e.g. Equalizer) FX) may conflict with MIUI.

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If the sound is even quieter after the update, roll back the firmware via Fastboot or contact the service, which is a sign of audio drivers being incompatible with the new version of MIUI.

6. Hardware malfunctions: when it is time to service

If none of these methods worked, the problem may be the iron:

• 🔌 Oxidation of contacts speaker or plume (often after moisture is ingested).
• 🔊 Damage to the speaker membrane (sound is distorted or absent altogether).
• 📱 Failure of the audio codec (chip on the motherboard).

How to diagnose:

1. Connect the headphones – if the sound in them is normal, the problem is in the speakers.
2. Call your smartphone from another phone – if the interlocutor can not hear you, the microphone is faulty.
3. Write down a voice memo – if the recording is quiet, the problem is with the audio track.

Cost of repairs in service centers:

• 🔧 Replacement of one speaker: 800–1,500 ₽.
• 🔧 Replacement of plume: 1,200–2,000 ₽.
• 🔧 Audio codec repair: 2,500–4,000 ₽ (depending on the damage).

⚠️ Warning: If the Redmi Note 7 fell or got wet, do not try to disassemble it yourself.The case of glue, and if you do not slouchy opening can damage the plumes or battery.

FAQ: Frequent questions about the sound on the Redmi Note 7