Maximum volume Xiaomi Mi A1: audio tuning

Xiaomi Mi A1, the company’s first Android One device, is still in service for many users due to its reliability and clean operating system. However, over time, owners may notice that the standard volume of a speaker or multimedia emitter is not enough to comfortably use in noisy places.

Before you resort to radical measures or purchase external equipment, it is worth conducting a thorough diagnosis of standard settings. Android shell, even in its stock version, there are many tools hidden to fine-tune audio streams. Proper calibration of frequencies and levels can add several decibels, which are critical for the intelligibility of the interlocutor.

In this article, we will look at all the available methods, from simple adjustments in the menu to the use of engineering code, you will learn how to safely increase the output level without damaging the acoustic system of your gadget, and we will also touch on the topic of third-party software, which can be an effective amplifier.

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Before making any changes to the system sound settings, be sure to write down the initial values of the parameters so that you can return everything as it was.

Basic multimedia setting and call

The first step should always be to check the standard adjusting sliders. On the Xiaomi Mi A1, volume control is divided into several independent channels: media, bell, alarm and system sounds. Often users inadvertently lower the level of one of the channels, thinking they are adjusting the overall sound. Press the side volume button and expand the menu to see all the sliders.

Note the Do Not Disturb item in the audio settings. This mode can limit the maximum volume of a call or vibration to avoid disturbing others. Make sure it is turned off or set correctly for your use case. Also in the Settings → Sound and Vibration section, check if the volume up option in your pocket is activated, if it is present in your firmware version.

For multimedia content, such as video or music, it is important to check the settings of a particular application. Some video players and browsers have their own internal controls that can be set to a minimum, regardless of the system volume of the phone. Check these parameters in the menu of the application itself before going into deep system settings.

• 🔊 Check that the Media slider is twisted to the maximum when playing content.
• 📞 Make sure that during the incoming call you increase the volume of the call, not the media.
• 🔇 Turn off the “Silence” or “Do Not Disturb” mode in the notification curtain.
• 🎧 Check if the phone is connected to a Bluetooth device that intercepts the audio stream.

Physical factors should not be ignored either: a security glass that is not properly pasted or a case with high sides can block the speaker's opening. Visual inspection and cleaning of the speaker's mesh with a soft brush often return the lost volume, since dust and pile greatly silence the sound.

Use of built-in equalizer

The Android operating system on the Xiaomi Mi A1 has built-in audio processing tools. The equalizer allows you not only to change the timbre, but also to influence the perceived volume. By raising certain frequencies, you can make the sound clearer and louder without distortion, characteristic of simply amplifying the signal.

To access these settings, go to Settings → Sound and Vibration → Sound Effects. Here you will find a graphical equalizer. Standard presets like Pop or Rock often already contain amplified high and medium frequencies, making speech more legible. However, for maximum effect, it is better to adjust the sliders manually.

Try to raise all the sliders of the equalizer by 2-3 dB up, this will give an overall increase in volume. However, be careful: too much raising of low frequencies can cause the speaker to wheez because its membrane is limited, the optimal strategy is to raise the medium and high frequencies, where the main spectrum of human speech is.

⚠️ Warning: Do not lift the equalizer sliders to the maximum position, this can lead to overloading of the amplifier and the appearance of severe distortion or wheezing.

Some versions of Android also have Dolby Audio or similar surround sound technologies available. Turning them on can redistribute the sound scene and make the sound subjectively louder. Experiment with profile switching to find the one that gives the best audibility in your situation.

Engineering menu for setting up speakers

The most efficient way to increase the volume at the hardware level is to use the engineering menu, which is a hidden part of the system, designed for testing equipment by engineers. On the Xiaomi Mi A1 with a Qualcomm Snapdragon processor, it is accessed through a special code. Be extremely careful when changing the values in this menu.

To enter, dialer (Phone app) code ##3646633##. If the code does not work (in some regions, operators block the code). USSD-codes), you can use the Engineering Mode Launcher app from the Play Market. After you log in, go to the Hardware Testing tab and select Audio.

In the Audio section, you'll see several categories: AudioDebug, LoudSpeaker Mode and Headset Mode. We're interested in hands-free mode. Select LoudSpeaker Mode. In the window that opens, you'll need to select a type of sound, such as Mic (microphone) or Sph (talk speaker). To increase the volume of the speaker, select Sph and the Normal level.

Find the volume setting (often Max Vol or Digital Gain) that can be set to around 130-135 by default. Try to increase it to 145 or 150. Exceeding 160 can cause permanent damage to the Xiaomi Mi A1 speaker. After changing, press the Set button to save.

Application of third-party sound amplifiers

If the built-in tools aren't enough, apps from the Google Play Store come to the rescue, and they act as software amplifiers, forcing the audio signal before it is sent to the DAC (digital-to-analog converter). For the Xiaomi Mi A1, applications like Volume Booster GOODEV or Precise Volume are well suited.

The principle is simple: they add an extra layer of gain on top of the system, but there's a downside to this method, and over-programming leads to clipping, which is the cutting of the tops of the sound wave, which manifests itself as crackling and wheezing, and it also increases the load on the battery.

When using these applications, it is important to follow the measure: set the boost no more than 20-30%. The 60 percent or higher values that some developers promise will only lead to a 99 percent deterioration in sound quality and the risk of burning the speaker. It is better to use them for periodic amplification, rather than keep them on all the time.

• 📱 Volume Booster GOODEV — Simple interface, one gain slider.
• 🎚️ Precise Volume – allows you to configure the amplification for each application separately.
• 🔊 Super Volume Booster – has built-in equalizer and presets.
• 🛡️ Flat Equalizer – a minimalist amplifier without unnecessary advertising.

It's important to understand that third-party software can't work miracles. If the speaker is physically worn out or clogged with dust, the app will only increase distortion. Use boosters as a temporary solution or addition to the basic system setup.

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Third-party amplifiers are only effective in combination with a clean acoustic system and give an increase of up to 30% without critical distortion.

Cleaning and maintenance of the acoustic system

Often the problem with quiet sound is not the settings, but the banal pollution. The Xiaomi Mi A1 speaker grid is located at the bottom of the body and at the top of the screen (conversational), over time, dust, skin fat and pile from your pockets are stuffed into it, forming a dense plug that does not let the sound through.

To clean, use a soft toothbrush. Carefully, without pressing too much, stubble through the speaker grid, removing visible contaminants. You can slightly moisten the brush in isopropyl alcohol, but make sure that the liquid does not get inside the case. Alcohol dissolves fat well and evaporates quickly.

Another effective method is to use a sticky tape or a special cleaning gel for electronics, glue a piece of tape to the net and pull it back abruptly, pulling the dust out of the depths. Repeat the procedure several times, and if the speaker started to sound louder after cleaning, then it was the mechanical lock that was the problem.

⚠️ Attention: It is strictly forbidden to use needles or sharp objects to pick the speaker mesh, as you can damage the membrane or puncturing the moisture-protective film.

Regular cleaning of the speaker should become a habit, especially if you carry the phone in your pocket without a case.This will not only improve the volume, but also prolong the life of the acoustic module, preventing the coil from overheating due to difficult heat sink.

Diagnostics of hardware malfunctions

If neither the software tweaks nor the cleaning helped, it may be a hardware malfunction. The speaker is a physical component that tends to wear out. The Xiaomi Mi A1 may have problems with the outgoing plume or oxidation of the contacts, especially if the phone has been exposed to moisture.

You can check your performance with an engineering test. In the same engineering menu (#3646633##), go to Hardware Testing → Audio → LoudSpeaker Mode. Press Play or Test. If you hear a pure but quiet sound, the speaker is alive but weak. If the sound wheezes, interrupts or is absent, a replacement is required.

Also worth checking is the speaker plume. In the Mi A1, the multimedia speaker is in the bottom module, which also includes the charging connector and the microphone. The disconnection of the connector of this plume from the motherboard is a common cause of loss of sound. Careful reconnection of the plume can solve the problem.

In the event of physical wear (a torn membrane, a burned coil) only a replacement will help. Fortunately, the speakers for the Xiaomi Mi A1 are affordable and affordable. The replacement takes about 15-20 minutes and requires a minimal set of tools: a screwdriver and a plastic blade.