How to increase the volume of the hearing speaker on Xiaomi through the engineering menu: a detailed guide

The hearing aid in Xiaomi smartphones is often criticized for not being loud enough during conversations, especially in low-end and mid-range models, where the manufacturer saves on hardware. But what if the subscriber barely hears your voice and the volume control in the settings is already at its maximum? The solution is an engineering menu, a hidden tool for fine-tuning the device parameters.

Many users are afraid to go to the engineering menu for fear of breaking their phone. And for good reason: improper changes can lead to malfunctioning of the speakers or even complete loss of sound. However, with the right approach, the risks are minimal. In this article, we will discuss safe ways to increase volume, explain which parameters are responsible for sound, and warn against dangerous errors. You will learn how to enter the engineering menu on different Xiaomi models, which settings should be changed and which should be avoided.

It's important to understand that the engineering menu is a tool for professionals. It's not designed for the average user, so you make all the changes at your own risk. If you don't have experience with these settings, we recommend that you try the software methods of increasing the volume first (which we will talk about too).

What is an Engineering Menu and Why You Need It

The Engineering Menu (or Engineer Mode) is a hidden section of smartphone settings that allows you to test and calibrate hardware components, and is used in factories to check devices before sale, as well as service centers to diagnose malfunctions, and unlike standard settings, you can change settings that are usually blocked by the manufacturer.

Why do you need an engineering menu in the context of sound?

• 🔊 Increase speaker volume – adjusting amplification levels for conversational and multimedia speakers.
• 🎧 Customizing the sensitivity of the microphone – improving the quality of voice transmission.
• 🔧 Diagnostics of malfunctions - checking the operability of speakers and microphones.
• 📊 Calibration of sound profiles – changing frequency characteristics for better sound.

But there's a downside to this tool, and incorrect changes can lead to:

• 🔇 Loss of sound in one or both speakers.
• 📵 Distortion of sound (wheezing, interference, echoes).
• 🔄 Self-rebooting of the device.
• 🚨 Loss of warranty (if changes are detected at the service center).

So before you start setting up, make sure that the problem is software constraints, not hardware failure, for example, if the speaker is wheezing or the sound is completely lost, it may be physical damage to the membrane or contacts.

How to enter the engineering menu on Xiaomi

The way to enter the engineering menu depends on the smartphone model and firmware version MIUI. Below we will present universal methods that work on most Xiaomi, Redmi and other devices. POCO.

Method 1: Through the code of the set

The simplest and most common method:

1. Open the Phone app.
2. Go to the Keyboard tab (if it is not active by default).
3. Enter the code: ##4636## or #36446337###.
4. If the code worked, you’ll see a menu with multiple tabs, including Hardware Testing or Audio.

Method 2: Through the Testing app (for some models)

On some Xiaomi devices, the engineering menu is hidden in the standard testing app:

1. Open the Settings. → The phone.
2. Find the item Version. MIUI And tap it 7-10 times until you get a message!
3. Return to the main settings menu and open Additional → for developers.
4. Activate the developer mode switch.
5. Now, in the list of applications, find Testing (or CIT) and open it.

Method 3: Through ADB (for advanced users)

If the standard codes do not work, you can try to enter the engineering menu through the ADB (Android Debug Bridge:

1. Install Platform Tools on your computer.
2. Connect your smartphone to your PC and enable USB debugging in the developer settings.
3. Open the command line and type in: adb shell am start -n com.android.settings/.EngineerMode

⚠️ Note: If the engineering menu does not open after entering the code, it may mean that the manufacturer has blocked access on your model, in which case attempts to bypass the lock can lead to a system failure.

Step-by-step: how to increase the volume of the auditory speaker

Now, to the main thing, volume setting, it's important to understand that the engineering menus on different Xiaomi models may look different, but the general principle remains the same. We'll look at a universal method that works on most devices.

Step 1: Find the audio settings section

After you log into the engineering menu, you need to find a tab that's associated with the sound.

• Audio
• Hardware Testing → Audio
• Speaker
• Volume

Step 2: Select the type of speaker

The audio menu usually has several sections:

• Speaker is the main speaker (for music, video).
• Headset, headphones.
• Earpiece or Receiver is an auditory speaker (it is used during calls).
• Mic is a microphone.

We need an Earpiece or Receiver section.

Step 3: Set up the volume levels

In this section, you will see several parameters that can be changed:

• Volume is the total volume level (0 to 255).
• Max Vol is the maximum volume limit.
• Gain - signal amplification (may be several sliders for different frequencies).

Recommended values for increasing volume:

• Set Volume in the 160–200 range (usually 128–140 by default).
• If you have Max Vol, increase it to 85-90% (don’t bet 100%, this can lead to distortions).
• It is best not to touch Gain if you are not sure of its purpose.

Step 4: Save settings and restart your phone

After the parameters change:

1. Press Set or Apply (if there is such a button).
2. Get off the engineering menu.
3. Reboot your smartphone so that the changes take effect.

Make sure the sound is not distorted at maximum volume.|

Check the microphone – your voice should be clear, without wheezing|

Make a test call to assess the quality of the communication|

Write down the current settings on paper (in case of resetting)-->

⚠️ Warning: If after the changes there are wheezing, interference or the speaker began to "choke", immediately return the previous values! Prolonged work on inflated parameters can lead to physical damage to the speaker.

What Xiaomi models support volume change through the engineering menu

Not all Xiaomi devices can change the volume of the audio speaker through the engineering menu, depending on the firmware version, model and manufacturer's policy.

If your model isn't in the table, it doesn't mean you can't set it up. Try the standard ways to log in to the engineering menu. If the menu opens but there's no Audio partition, the manufacturer has restricted access to the audio settings.

What to do if the engineering menu is blocked?

On new Xiaomi models (especially flagships), access to the engineering menu is often limited.

• 🔄 Reverse to an older version MIUI (if possible).
• 📱 Use third-party applications to customize the sound (e.g., Volume Booster or Equalizer) FX).
• 🔧 Contact the service center for hardware modification (replacement of the speaker with a more powerful one).

Alternative ways to increase volume without an engineering menu

If you can't log into an engineering menu or you're afraid of breaking something, there are a few alternatives that are less effective, but they're safe and they don't require deep knowledge.

1. Use of third-party applications

Google Play has apps that allow you to increase the volume due to software processing of sound:

• 🔊 Volume Booster GOODEV — Increases volume by 20-30%.
• 🎛️ Equalizer FX — allows you to adjust the equalizer and increase certain frequencies.
• 📞 Sound Amplifier (from Google) – improves the perception of sound in headphones and speakers.

2. Equalizer setting in MIUI

In standard settings MIUI There is a built-in equalizer that can be used to improve sound:

1. Open Settings → Sound and vibration → Equator.
2. Choose Preset Volume or create your profile.
3. Increase the sliders in the range of 1-4 kHz (the frequency of the human voice).

3. Cleaning the speaker from dust

Sometimes the problem is not the settings, but the physical contamination, and the hearing aid can get clogged with dust, making the sound quieter, to clean it up.

• 🧹 Use a soft brush or compressed air (canister).
• 🔊 Do not use sharp objects – it can damage the membrane.
• 💧 Avoid liquids (alcohol, water) – they can cause corrosion.

4. Firmware update

Sometimes low volume is a firmware bug. Check for updates:

1. Open Settings → About the phone → System update.
2. If there is a new version MIUI, set it up.
3. After the update, reset the sound settings (Settings) → Sound. → Reset).

💡

If the sound gets distorted after you turn up the volume through the engineering menu, try reducing the Gain by 5-10 units, which often helps to remove the wheezing without losing the volume.

What happens if you set the volume incorrectly in the engineering menu?

Incorrect changes in the parameters in the engineering menu can lead to serious problems, and let's look at the most common consequences and how to fix them.

1. Sound distortion (wheezing, interference)

If you set Volume or Gain values too high, the speaker can start to "choke" because the signal exceeds the permissible amplitude and the speaker membrane can not cope with the load.

How to fix it:

• Return to the engineering menu and reduce Volume by 20 to 30 units.
• If the wheezing is left, reset the sound settings to the factory (Reset Audio in the engineering menu).

2. Total loss of sound

If after the changes the speaker stopped working at all, most likely, the gain limit was exceeded or the firmware of the sound chip was damaged.

How to fix it:

• Perform a reset of settings through Settings → Reset → Resetting all settings.
• If that doesn’t work, try flashing your phone over Fastboot.
• In the extreme, contact the service center.

3. Self-involuntary reboot

If the phone starts to reboot after the changes, it could mean that the new audio settings are in conflict with other system processes.

How to fix it:

• Go to Safe Mode (hold the power button) → Safe regime).
• Return the sound settings to the factory.
• If the reboots continue, do a full reset (Wipe Data in Recovery).

⚠️ Warning: If after changes in the engineering menu, the phone stopped turning on or stuck on the logo MIUI, This could mean corrupting system files, and in this case, only flashing through Fastboot or EDL.

How to return factory sound settings

If you've experimented with the engineering menu, you can always turn it back on.

Method 1: Through the Engineering Menu

1. Enter the engineering menu (the methods described above).
2. Go to the Audio section → Earpiece.
3. Find the Reset or Restore Default button.
4. Confirm the reset and restart the phone.

Method 2: Through resetting settings

If the engineering menu is not available:

1. Open the Settings. → System system → Reset → Resetting settings.
2. Select Reset sound settings (if such a item is available).
3. Confirm the action.

Method 3: Through ADB

For advanced users:

1. Connect your phone to your PC and enable USB Debugging.
2. Enter the command: adb shell settings reset global
3. Reset the device.

Method 4: Flashing

If the sound is gone completely and none of the ways are working, you just have to go through the phone.

• Download the official firmware for your model from the MIUI Downloads website.
• Use the Mi Flash Tool to run through Fastboot.
• Select the Clean All option for a full reset.

💡

Before resetting your audio settings through the engineering menu, make sure to write down the current parameters values, which will help you quickly restore your performance if something goes wrong.

FAQ: Frequent questions about volume setting on Xiaomi