The problem of quiet sound during phone conversations is one of the most common complaints of owners of smartphones Xiaomi, Redmi and Poco. Users often face a situation where the interlocutor is barely audible even at the maximum volume, especially in noisy places or with a bad network signal, this can be caused by software restrictions of regional versions of firmware, contamination of speakers or misconfigured parameters of the MIUI and HyperOS system.
In this article, we'll go into all the ways to make a conversation sound sound significantly better, and we'll look at standard settings, hidden engineering menus, equalizer capabilities, and software calibration techniques, and not just make it louder, but also make it cleaner, eliminating the wheezing and distortion that often occurs with software amplification.
Basic sound tuning and speaker cleaning
Before we get to the complex manipulation of system files, we need to rule out the trivial physical and software causes of quiet sound. Often the problem lies in the protective film that covers the upper speaker, or in the banal dust that has been stuffed into the grid during use, physical cleaning can return up to 30% of the lost volume without any settings.
It's also worth checking if Pocket mode is activated or volume down in noisy areas, if any, in your version of the shell. In some scenarios, the system itself lowers the sound level in an attempt to protect the user's hearing or save battery power. Make sure the media volume slider and call are twisted to the point.
To clean the speaker properly, you can use special audio tracks that blow dust out due to low-frequency vibrations, or walk gently with a soft toothbrush. Do not use sharp objects, as you can damage the speaker membrane, which will lead to wheezing or complete absence of sound.
- 🧹 Carefully clean the top speaker grid with a soft dry brush.
- 🔊 Check volume sliders during incoming call with adjustment buttons.
- 🎬 Remove the protective glass or cover if they block the sound hole.
- 🔇 Turn off No Sound mode and make sure the “Down Calls” function is not activated».
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Use the Sounds app or turn on low-frequency (bass) YouTube videos at maximum volume so that the vibration pushes dust out of the speakers.
Use of the Engineering Menu for Calibration
The most effective way to turn up the volume on Xiaomi is to use the engineering menu, a hidden part of the system designed for testing equipment by engineers, but accessible to ordinary users, where you can manually raise the signal amplification level for various scenarios, including Hands-free and Receiver mode.
To enter the menu, you need to enter a special code in the Phone app, but it is worth remembering that the interface may differ depending on the version of Android and the type of processor (Snapdragon or MediaTek). Be extremely careful: changing unknown parameters can lead to unstable operation of the communication module.
⚠️ Note: Do not change the values in non-sound parts (e.g, RF or Camera, this can disrupt the radio module or camera.
In the menu that opens, you'll find the Hardware Testing section or go straight to the Audio tab. Here we're interested in the Volume setting, where you can select the type of sound (for example, Normal Mode or Headset Mode), and by increasing the steps (Level), you'll turn up the volume, but you need to do this gradually, checking the result after each change.
Codes for entering the engineering menu
Equalizer and sound effects setting
The built-in equalizer in the MIUI and HyperOS shell is a powerful tool that is often ignored. The right set of frequency bands allows you not only to improve the quality of the music, but also to make the speaker's speech more legible and louder. The human voice lies in a certain frequency range, and the amplification of these frequencies creates a high volume effect.
Go to Settings → Sound and Vibration → Sound Effects. You can choose a preset, such as Clear Voice or News, if available, or adjust the equalizer manually. Lift the sliders in the mid-frequency range (about 500 Hz – 2 kHz), where the main energy of speech is concentrated.
Also worth looking at is the Dolby Atmos or Mi Sound Enhancer feature, which often gives you an increase in overall volume and dynamic range. Experiment with Film or Dynamic modes, which often make the sound louder than the standard Music mode.
- 🎚️ Raise the average frequencies in the equalizer for better speech audibility.
- 🎧 Turn on the Mi Sound mode and select the General headphone type even without them.
- 🌊 Activate Dolby Atmos in Dynamic Mode for maximum amplification.
- 🔊 Make sure that the “Absolute Volume” feature in the developer menu is enabled.
Secrets of the Developer Menu for Audio
The developer menu hides parameters that can dramatically change the behavior of a smartphone's audio system, and you can get there by clicking on the build number several times in the About Phone section, among the many settings there are those that directly affect the volume of Bluetooth devices and system sound.
One of the key settings is "Absolute Volume." If this setting is turned off, the phone and the connected Bluetooth headphones or headset adjust volume independently of each other, which sometimes results in quiet sound. Turning on volume levels synchronization often solves the problem.
Settings → About phone → 7 times press on "Version MIUI" → Additional settings → For developersAlso in this section, you can find settings for the limit of background processes, which indirectly affects the performance of the audio processor. Freeing up the system resources allows the audio drivers to work more stable, avoiding omissions and quiets during a conversation.
☑️ Setting up the Developer Menu
Comparison of volume-increasing methods
Not all methods are equally effective and safe for your device. Some methods give instant but risky results, others work softer but require customization. Below is a table to help you choose the best option for your situation.
| Method | Efficiency | Risk | Difficulty |
|---|---|---|---|
| Engineering menu | Tall. | Medium. | Medium |
| equalizer | Medium | Low. | Low. |
| Third-party annexes | Tall. | High-pitched | Low. |
| Physical cleaning | Depends on pollution | Low. | Low. |
Using third-party amplifiers (Volume Booster) often has the most noticeable visual effect, but can overload the speaker and cause it to fail. The engineering menu is a more “native” way, integrated into the system, but requiring care.
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The safest way is to combine physical cleaning and equalizer tuning, and only use the engineering menu if there are not enough regular funds.
Third-party applications and Root rights
If regular funds are scarce, users often turn to Google Play apps such as Volume Booster GOODEV or Super Volume Booster, which increase the program volume limit of the system, but their use on a regular basis is not recommended.
Root rights are required to deeply modify the sound, and once you have superuser rights, you can edit the system files for the sound configuration (e.g, mixer_paths.xml), It's changing the driver-level gain, and it's maximizing the output, but it's not warranty, it's highly skilled.
⚠️ Warning: Installing apps with questionable reviews to amplify sound can lead to virus infection of the phone or irreversible damage to speakers due to overload.
When using boosters, always turn on the sound gradually. A sharp jump in volume can instantly "break" the speaker membrane. If you hear wheezing or distortion, immediately lower the level.