Owners of the popular flagship Xiaomi Mi 8 over time may face a situation when the regular volume of the spoken or main speaker becomes insufficient. This is a common problem that often occurs after several years of active operation of the device or after updating the MIUI operating system. Users notice that in noisy places the interlocutor is not heard, and multimedia content sounds too quiet even with the maximum sliders of adjustment.
There are many reasons for the decline in acoustic performance, from the banal contamination of the speaker mesh with dust to software constraints introduced by the manufacturer to protect hearing. However, in many cases, this can be dramatically improved without buying additional equipment, software calibration and proper physical cleaning can restore the device to its former power of sound.
In this article, we will discuss in detail all proven methods of sound amplification available for Xiaomi Mi 8.We will consider the standard settings of the system, hidden features of the engineering menu and third-party applications. It is important to approach the process carefully so as not to damage the acoustic system of the smartphone.
Diagnostics and physical cleaning of speakers
Before you interfere with the code or system settings, you need to eliminate mechanical obstacles to the passage of the sound wave. In the Xiaomi Mi 8, the conversational speaker is located at the top of the screen, hidden behind a narrow slit, where over time street dust, pile from pockets and skin fat are stuffed. These pollutants act as a silencer, significantly reducing the output power.
To do a good cleaning, you will need a soft toothbrush with hard bristles, isopropyl alcohol (or a special liquid for cleaning electronics) and a pear to blow out dust. Under no circumstances do not pour liquid directly on your smartphone, as this can damage moisture-retarding membranes and electronics.
- 🧹 Carefully walk with a dry brush on the speaker grid, sweeping out visible dust lumps in circular movements.
- 💨 Use a pear to blow out the removed dust from the internal channels of the device’s body.
- 💧 Slightly moisten the brush with alcohol and repeat the procedure to dissolve the fat deposits, but do not allow moisture to enter inside.
After cleaning, make a test call or turn on the music, and if the sound is cleaner and louder, the problem is the physical pollution, and if you do this regularly, you prolong the life of the acoustic system.
⚠️ Attention: Use of aggressive solvents, acetone, or large amounts of water can damage the screen adhesive base and speakers, and lead to oxidation of contacts.
Set up the built-in equalizer and sound profiles
The MIUI operating shell on the Xiaomi Mi 8 has enough flexibility to adjust the audio output, which many users ignore by relying on standard values, but the right configuration can add a few decibels to the overall volume and improve speech intelligibility.
To access the settings, go to Settings → Sound and Vibration → Sound Effects. This is a built-in equalizer that allows you to adjust frequency ranges. By lifting the sliders in the mid- and high-frequency areas, you can make the sound sound sound more sonorous and legible, which is subjectively perceived as increasing volume.
Also worth looking at is the Dolby Atmos feature, if available in your firmware version. This surround sound algorithm not only improves quality, but can also work as an amplifier. In the audio effects menu, try switching profiles from Music to Video or Voice to find the loudest option for your tasks.
☑️ Sound tuning
Remember that some third-party applications can intercept control of the audio engine. If after setting up the system equalizer, the sound in specific applications (for example, Telegram or Viber) remained quiet, check their internal volume settings.
Use of the Engineering Menu for Calibration
The most effective, but also the most risky way to increase volume is to edit parameters through an engineering menu. In smartphones based on Qualcomm processors, which includes Xiaomi Mi 8, a hidden console for testing equipment is available, where you can change the maximum level of signal amplification fed to the speaker.
To enter the engineering menu, open the Phone app and enter the secret code ##6484## or ##3646633##. If the code doesn’t work on your version MIUI, It may be necessary to install a special application-launcher for the engineering menu from the Google Play store.
Once you're on the menu, follow the path: Hardware Testing → Audio → Audio Debugging. Here you'll see a table with parameters for different scenarios (earphones, speakerphone, normal mode).
| Parameter | Description | Recommended value |
|---|---|---|
| Digital Gain | Digital signal amplification | No more than 6 |
| Analog Gain | Analog reinforcement | Leave it by default |
| Max Vol Step | Maximum step of volume | 15 (standard) |
| Vol Level | Volume level (0-15) | 10-12 (caution!) |
⚠️ Warning: Exceeding Digital Gain above 6 or setting Vol Level to a maximum of 15 may cause the speaker to burn out or cause severe wheezing.
What if the sound is lost after changes to the engineering menu?
Third-party sound amplifiers
If you don't want to mess with the system settings, Google Play apps that are designed to turn up the volume will come to the rescue, and they work on the principle of software amplifying the audio stream, passing the sound through their filter before displaying it on the speaker.
One of the most popular solutions is the Volume Booster GOODEV application, which has a minimalist interface and a gain slider, but it is worth remembering that software amplification often distorts the audio signal, especially at high boost values.
- 📱 Volume Booster Plus – allows you to configure individual profiles for music and video, has a built-in equalizer.
- 🔊 Bass Booster & Equalizer – in addition to amplifying bass, has a Pre-amp function that raises the overall volume.
- ⚡ Super Volume Booster is a simple app with a single slider, but requires caution because of the risk of overload.
Using such programs is a compromise between volume and quality. On the Xiaomi Mi 8 with its high-quality, but not the most powerful speaker, it is recommended not to exceed the level of the boost of 20-30%, otherwise you will have unpleasant wheezing.
💡
Before installing sound amplifiers, create a system restore point or backup important data, as aggressive applications can conflict with system audio drivers.
The Impact of Bluetooth Codecs and Wired Headsets
Often the problem of quiet sound on the Xiaomi Mi 8 does not occur in the smartphone itself, but when connecting external playback devices. If you use wireless headphones or speakers, the volume depends on the coordination of codecs between the phone and the accessory.
In the developer settings (which you need to activate by clicking on the build number in About Phone several times), you can find the item "Absolute Volume Level".