How to increase the sound of a conversational speaker on Xiaomi

The problem of quiet sound in the conversational dynamics of Xiaomi smartphone is familiar to many users, especially owners of models of the mid- and budget segment. It often happens that in a noisy place or when the signal is not received by the interlocutor is simply not audible, which causes discomfort in communication. In most cases, this is not a hardware defect, but only a consequence of software restrictions or banal contamination of the acoustic system.

There are many ways to increase volume significantly without having to repair or solder, from simple MIUI or HyperOS settings to hidden engineering menus that not everyone knows about. In this article, we’ll take a look at all the methods available, from safe to advanced, so you can choose the best option for your device.

Before we make any radical changes, it's important to understand the nature of the problem, because sometimes the sound gets quieter because of a software failure after the update, and in other cases, the protective film or dust is to blame, and a competent approach to diagnosis will help avoid unnecessary actions and maintain the warranty on the device.

Diagnostics and basic sound settings

The first step should always be to check the basic settings, as often users accidentally change the equalizer settings or turn on noise reduction functions that "eat" the useful volume. Go to the Settings → Sound and vibration menu and carefully examine all available options. Make sure that the multimedia and call volume slider is twisted to the maximum.

Note the Sound Improvement feature, or Mi Sound Enhancer. In some firmware, activating certain profiles, such as "Hearphones" or "Car," may not work properly on the main speaker, distorting the frequency range. Try turning off all the improvements and see if things change.

⚠️ Attention: Some third-party design themes downloaded from the store MIUI Themes, which may contain errors in the configuration of audio files, resulting in a quiet sound.

It's also worth checking the settings of the particular phone app. Depending on the version of the shell, it may have its own filters. If you're using a third-party call, like from Google, check its internal settings for volume limits.

Use of the CIT Engineering Menu

The most effective way to program volume control is to log into the engineering menu, which is a hidden part of the system that is designed to test hardware components, including the audio module, and to log in, you use a standard phone book where you need to type in a special code.

Enter ##6484## on the call keyboard. If the code fits, the CIT menu will open. Here you will find an item related to the sound testing, usually called Speaker or Audio. In some versions of MIUI, the volume level fine-tuning is accessed via the code ##3646633##, which opens the Engineer Mode menu.

Inside the engineering menu, go to the Hardware Testing tab, then select Audio → Audio Debug. Here you will see the Volume section. It is important to be careful: changing parameters in non-volume partitions (such as modem frequencies) can lead to unstable network performance.

• 🔊 Select Normal Mode script (normal mode) so you don’t confuse settings with headset mode.
• 📞 Find the Media or Ring sound type, but for a conversational speaker, we are interested in Voice or Call.
• ⬆️ In the Level field, select the maximum value (usually 0 to 6), and in the Value field, increase the numerical value (the maximum is often 160 or 255, depending on the chipset).
• 💾 Make sure to press the Set button after each change, otherwise the settings won't persist.

⚠️ Attention: mindlessly increasing Value above recommended limits (usually 190-200 units) can lead to wheezing, distortion of sound and even physical burnout of the speaker membrane due to overloading on the current.

Set up the equalizer and Dolby Atmos

Many modern Xiaomi smartphones are equipped with Dolby Atmos software modules or their own equalizer MIUI Sound. The correct configuration of these tools allows not only to improve the quality, but also visually "pull" the volume by amplifying certain frequencies.

Go to the sound settings and find Sound Effects. If you have Dolby Atmos, try changing profiles. Movie or Game mode often makes the sound louder and more saturated than standard Music. In the manual equalizer, try lifting the mid- and high-frequency sliders, where the main spectrum of human speech (300 Hz to 3.5 kHz) is located.

Don’t forget about the Mi Sound Enhancer feature. If it’s on, try changing the headphone profile to “Mi Headphones” even if you’re listening through the speaker — in some builds, it’s weird, but it works by adding compression and making quieter sounds louder.

Cleaning and maintenance of the conversational speaker

One of the most common causes of silent sound is the banal pollution, and the speaker grid at the top of the screen is clogged with earwax, dust and pile from your pockets, which creates a physical barrier to the sound wave.

To clean, use a soft toothbrush with dry bristles. Carefully, without pressing hard, walk around the speaker grid in circular motions. You can use a sticky tape (scotch) to apply it with the adhesive side to the holes to pull out dust. The use of liquids such as alcohol or water is highly undesirable, since moisture can get into the housing and oxidize the contacts.

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If the sound hasn't improved after brushing, try using paint tape. Put a small piece on the net, press tightly and pull sharply. Repeat 3-5 times. This removes deep dust more effectively.

Also check if the protective film is pasted on the screen with a cutout over the speaker. Cheap films often have inaccurate cutouts that partially or completely cover the sound hole, jamming the sound.

Third-party applications for reinforcement

If the system tools are insufficient, Google Play Store apps like the Volume Booster GOODEV or Super Volume Booster come to the rescue, and these programs act as a software amplifier to force the output audio signal.

When you install this app, you will get a Boost gain slider. It is recommended not to raise it higher. 20-30%. Exceeding this threshold will lead to severe distortion (wheezing) and can damage the speaker. The principle of operation is simple: the application intercepts the audio stream and multiplies its amplitude before sending it to the DAC.

• 📱 Volume Booster: Simple interface, one power button, suitable for beginners.
• 🎚️ Equalizer & Bass Booster: Combine with equalizer and volume booster, more flexible settings.
• 🔊 JetAudio: Advanced player with built-in powerful equalizer and Crystalizer feature, improving clarity.

It’s worth remembering that these applications consume extra battery power, as the processor has to process sound in real time, and they can conflict with standard MIUI settings, so you may need to restart your smartphone after using them.

⚠️ Attention: Using third-party boosters at maximum power for a long time reduces the life of the speaker. Use them only in situations where the standard volume is critically lacking.

Hardware problems and repairs

If neither cleaning nor software settings helped, there is a high probability of hardware failure, which can be the departure of the plume speaker, oxidation of contacts after moisture or physical wear of the membrane.

You can check the integrity of the connection by gently (very carefully) pressing your finger on the top speaker area during a conversation, and if the sound comes or becomes clearer, then the contact is broken, in which case only disassembling the device and reconnecting the plume or replacing the module will help.

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If the sound disappeared abruptly after falling or getting water, software methods are powerless - a visit to the service center is required to diagnose the board and replace the speaker.

Replacing the speaker is a low-cost and old procedure. In authorized Xiaomi centers, the original module will be replaced in 30-40 minutes. Self-repair is possible, but requires skills with thin electronics and heating equipment to remove the back cover.