Increase the volume of the speaker on Xiaomi Redmi Note 7: a full guide to the engineering menu

Xiaomi Redmi Note 7 is one of the most popular smartphones in the budget segment, but many users have complaints about the volume of the conversational speaker. Even at maximum settings, the sound can seem quiet, especially in noisy rooms or when using a headset. Fortunately, the manufacturer has provided hidden customization options through the engineering menu, which allow you to increase the volume without installing third-party applications.

In this article, we will discuss how to safely log into the Redmi Note 7's engineering menu, what parameters are responsible for the volume of the speaker, and how to adjust them without risking damage to the device. You will also learn about the possible consequences of incorrect settings and alternative ways to improve sound. Importantly, you perform all manipulations at your own risk, but if you follow the instructions, the probability of problems is minimal.

What is an Engineering Menu and Why You Need It

The Engineering Menu (or Engineer Mode) is a hidden Android device settings section designed to test hardware components, which can check the display, accelerometer, camera, speakers and other modules. For the Xiaomi Redmi Note 7, this menu is especially useful because it allows you to manually adjust audio settings that are not available in standard settings.

The main functions of the engineering menu for audio tuning:

• 🔊 Adjusting the volume of the conversational speaker, multimedia speaker and headphones
• 🎛️ Frequency adjustment (bass, high frequencies)
• 📊 Testing microphones and speakers for malfunctions
• 🔄 Resetting sound settings to factory values

However, it is important to understand that not all parameters in the engineering menu are documented, some settings can lead to audio distortion, overheating of the speaker or even damage to the hardware if you set extreme values, so before changing any parameter, it is recommended to write down its original value.

Preparation for work with the engineering menu

Before you start setting the volume, you need to perform several preparatory steps, which will help to avoid errors and preserve the possibility of rolling back changes.

What will be required:

• 📱 Xiaomi Redmi Note 7 with a battery charge of at least 50%
• 🔢 Access code to the engineering menu (universal for Xiaomi)
• 📝 Notepad for recording initial parameters
• 🎧 Headphones (optional, for sound testing)

Also make sure that your phone doesn't have any important data that's not stored, and in rare cases, incorrect audio settings can cause the system to freeze or automatically restart. If you use custom firmware, some of the engineering menu items may be missing or unstable.

⚠️ Note: If your Redmi Note 7 is warranty-free, changing the parameters in the engineering menu may be considered as unauthorized interference, in which case the service center may refuse free repairs.

How to Sign In to the Engineering Menu on Redmi Note 7

There are two main ways to open the engineering menu on the Xiaomi Redmi Note 7: through the standard command set and using a third-party app. We recommend the first method, as it does not require installing additional software.

Method 1: Through a telephone dialer

1. Open the Phone app.
2. Go to the keyboard tab (as if you are going to dial a number).
3. Enter the combination: ##4636## or #36446337###.
4. The screen will display the Testing or EngineerMode menu.

Method 2: Using the MTK Engineering Mode

• Download the MTK Engineering Mode app from Google Play (for MediaTek-based devices only).
• Launch the application and select MTK Settings.
• Go to the Hardware Testing → Audio section.

On the Redmi Note 7 with a Qualcomm Snapdragon 660 processor, the first method works 90% of the time. If the combination doesn't work, try the alternative code: ##8255## (Gtalk Service Monitor menu, where you can go to engineering settings).

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If the engineering menu does not open, check if the antivirus or the Unauthorized Call Protection feature in the security settings blocks it.

Step-by-step instructions for increasing the volume of the conversational speaker

After successfully entering the engineering menu, follow this instruction to increase the volume of the speaker. All changes are made at your own risk.

Step 1: Go to the section of sound settings

1. In the engineering menu, select Hardware Testing.
2. Next, go to Audio.
3. Select LoudSpeaker Mode (or Normal Mode if the first option is missing).

Step 2: Configure the volume parameters

• Find a slider or input field that says Volume or Speaker Gain.
• The initial value is usually 160 or 192 (depending on the firmware version).
• Increase the value by 10-20 units (for example, from 160 to 180).
• Press Set or Apply to save.

Step 3: Testing and Adjustment

• Call another phone and check the volume.
• If the sound is distorted or wheezing appears, reduce the value by 5-10 units.
• Repeat the test until you have the best balance between volume and quality.

⚠️ Note: Setting the Speaker Gain value above 220 may cause physical damage to the speaker due to overload, in which case repair is possible only by replacing the module.

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The optimal volume increase is 10 to 15 percent of the original volume, and it's a noticeable effect without risking the hardware.

Alternative ways to increase volume

If the engineering menu seems too complicated or you’re afraid of breaking something, there are a few alternative methods to improve the volume of the conversational speaker on the Redmi Note 7.

1. Use of sound amplifiers

• 🔊 Volume Booster – allows you to increase the volume to 200% of the standard volume.
• 🎧 Equalizer FX — Adjusts frequency response for better hearing.
• 📱 SoundAbout – redirects sound to a more powerful speaker (if there are several of them).

2. Equalizer setting in MIUI

1. Go to Settings → Sound and vibration → Equator.
2. Choose Preset Voice or create your profile with amplified average frequencies (1-3 kHz).
3. Activate the option Adaptive sound to automatically adjust to ambient noise.

3. Cleaning dynamics from dust

• 🧹 Use a soft brush or compressed air to remove dust from the speaker grille.
• 🚫 Do not apply sharp objects or wet wipes – this can damage the membrane.
• 🔧 If the sound became quieter after the phone fell, the speaker contact may have gone (disassembly is required).

Possible problems and solutions

When working with engineering menus or third-party applications, you may have problems, and let's look at the most common ones and how to fix them.

Problem 1: After changing the settings, the sound disappeared completely.

• 🔄 Restart your phone – sometimes resetting time settings helps.
• 📲 Return to the engineering menu and reset the sound settings to the factory (Reset Audio Settings).
• 🔧 If the sound has not recovered, reset to factory settings via Settings → The phone. → Resetting settings.

Problem 2: The sound became distorted or wheezing

• 🔊 Reduce Speaker Gain by 10-15 units.
• 🎛️ Check the equalizer settings - high frequencies may be too amplified.
• 📱 Update the firmware: in new versions MIUI Often corrected bugs with sound.

Problem 3: The Menu is not open

• 📱 Check if the code is correctly entered (without spaces and symbols).
• 🔄 Try alternative combinations: ##36446337## or #8255##.
• 🛠️ If the phone is on custom firmware, it is possible that the engineering menu is disabled in the kernel.

⚠️ Warning: If the phone starts spontaneously restarting or warming after a change in the engineering menu, immediately return all sound parameters to their original values.

Security and recommendations

Working with the engineering menu requires caution, and here are the key tips to avoid problems:

What can be done:

• ✅ Change the sound parameters in small steps (5-10 units).
• ✅ Write down the initial values before changing.
• ✅ Test the sound after each adjustment.
• ✅ Use official firmware MIUI (global or Chinese version).

What can't be done:

• ❌ Set maximum parameters (Speaker Gain) > 220).
• ❌ Change settings that you do not know the purpose of (for example, Audio Tuning for inexperienced users).
• ❌ Use the engineering menu on the phone with an unlocked bootloader and custom recovery without backup.
• ❌ Making changes to Mic Gain settings above 5 will increase the noise in the microphone.

If you are not sure about your actions, it is better to use alternative methods (applications or MIUI settings). Also remember that the Xiaomi warranty does not apply to damage caused by incorrect settings in the engineering menu.

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The best balance between volume and safety is to increase Speaker Gain by 10 to 15 percent of the standard value, which produces a noticeable effect without risking the speaker.

FAQ: Frequent questions about volume settings on Redmi Note 7