The situation of hearing the other person overly loud during a phone conversation is familiar to many Xiaomi smartphone owners, not just discomfort that irritates the ear, but also a real threat to hearing during long-term communication. Often, the regular volume buttons during a call have a lower limit, which is still excessively high for quiet rooms or for users with high hearing sensitivity.
The problem lies in software implementation of the sound path in the shell of MIUI or HyperOS. Developers often raise the minimum volume values to ensure audibility in noisy places, but forget about the use scenarios in silence. Fortunately, there are several proven ways to circumvent these limitations and adjust the audio stream to their needs without losing communication quality.
In this article, we'll look at methods from simple system settings to the use of an engineering menu, and you'll learn how to calibrate the speaker so that the conversation is comfortable and the interlocutor sounds natural, not through a mouthpiece. It's important to understand that some methods require caution because they affect system parameters.
Basic calibration through sound settings
The first step should always be to check the standard settings, which are often ignored by users. In Redmi and Poco smartphones, there is a volume separation for different multimedia profiles. During a conversation, press the side button to increase or decrease sound to appear scale. Then click on the arrow or gear next to the slider to expand the detailed menu.
Here you'll see individual sliders for the call, alarm and notifications. Make sure the Call slider is set to the lowest possible value. However, if the minimum value is too loud, you should pay attention to the Adaptive Volume feature, which uses a microphone to analyze ambient noise and automatically adjusts the sound level.
- 🔊 Open the Settings. → Sound and vibration to access basic parameters.
- 📉 Set the call volume slider to zero or minimum before the test begins.
- 🤫 Turn off Adaptive Volume if it is not working properly in quiet areas.
Sometimes the problem is solved by simply cleaning the speaker grid. If dust or pile gets into the speaker's opening, the sound can be distorted and perceived as sharper and louder. Gently blow out the top of the screen or use a soft brush. Don't use sharp objects to avoid damaging the membrane.
⚠️ Warning: Do not try to pick the speaker hole with a needle or toothpick.You risk piercing the safety net and damaging the speaker itself, leading to wheezing or no sound at all.
Using an engineering menu to fine-tune
The most effective way to solve the problem is to access a hidden engineering menu, which allows you to manage sound levels (amplifications) at the hardware level. To log into the menu on Xiaomi devices, the most common code is ##3646633##. Enter it in the Phone app as a regular number, and the menu will open automatically.
After you log in to the EngineerMode interface, go to the Hardware Testing tab. Here you are interested in the Audio section. From the menu that opens, select the Audio Debug Tool or Audio Volume, depending on the firmware version, you need to find the Normal Mode profile (normal mode) and the Speech device type (conversation).
What if the code doesn't work?
Inside the settings, you'll see volume levels labeled Level 0, Level 1, etc. That's Level 0 for the minimum volume. Find Digital Gain or Headset/Speaker Gain and reduce it. The standard value can be around 100-130, try lowering it to 80-90.
| Parameter | Description | Recommended action | Risk |
|---|---|---|---|
| Level 0 | Minimum volume speaker | Reduce the value of Gain | Low. |
| Level 6 | Maximum volume | Don't touch unnecessarily | Medium. |
| Mic Gain | Microphone sensitivity | Leave it unchanged. | High-pitched |
| Speech Enhancement | Improve speech | Experimentally | Medium. |
After making changes, be sure to press the Set button to save settings. Without this step, all settings will reset after rebooting or exiting the menu. Check the result by making a test call. If the sound is too quiet or gone, return the original values.
⚠️ Warning: Changing the parameters in the engineering menu can cause the sound module to work unstable. Remember or photograph the original values before making any edits to be able to roll back.
☑️ Check before entering the engineering menu
Set up the equalizer and Dolby Atmos
Modern Xiaomi smartphones are equipped with advanced audio processors and software improvements, such as Dolby Atmos or the branded equalizer MIUI Sound. These tools can not only improve the quality of music, but also affect the voice of the interlocutor, making it less sharp.
Go to Settings → Sound and Vibration → Sound Effects. Try switching your profile from Bright or Saturated to Standard or Balance. Often, bass or high frequency amplification modes add to the ringing, which is subjectively perceived as increasing volume.
- 🎚️ Turn off Dolby Atmos while you’re talking to check for the effects of spatial sound.
- 🎵 In the equalizer, lower the high-frequency sliders (16 kHz, 8 kHz), as they give "sharpness».
- 🔇 Use the Voice or News preset if it is available in your shell version.
It's also worth checking the mono-sound settings. In some cases, turning on mono-audio (Special Opportunities → Audiovisual → Mono-audio) changes the way channels are conciliated, which can make the sound more even and less aggressive to the ear.
Third-party applications for volume control
If the system is not enough, Google Play apps come to the rescue to create additional volume levels, the most popular solution being Precise Volume or Volume Control GO, which intercept system commands and allow you to break the standard 15-16 volume steps into 100 or more levels.
Once you install the app, you'll need to give it the permissions you need, including access to special features, so that the program can programmatically change the sound level in real time. In the application settings, create a separate profile for calls.
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Use the app widget on your desktop for quick access to fine volume settings right during a conversation without interrupting the interlocutor.
The advantage of these applications is that they don't change system files, they just put a software filter on them, and if the application is removed, all settings will return to their original state, but you should also consider that these programs can consume additional battery power while running in the background.
⚠️ Warning: When installing volume control applications, read the permissions carefully. Don't give access to contacts or microphones if the app is positioned as a volume control only.
The impact of headset and Bluetooth devices
The volume problem can be specific to a particular type of connection: If the sound is normal when talking on a regular telephone network, and it is excessive in Viber, Telegram or via a Bluetooth headset, it is the codecs or settings of a particular application.
In Bluetooth settings, the option "Absolute Volume" is sometimes available. If it's on, the phone syncs its volume to the volume of the headset. Try turning it off in the Developer Menu ("Disable Absolute Volume"), which allows you to adjust the sound independently on the phone and in the headphones.
For VoIP calls (via the Internet), settings are often inside the apps themselves. Go to the sound settings on WhatsApp or Telegram and check if there are any amplifiers in place. Also try to lower the overall volume of media files before starting a call, as Internet calls often use this channel.
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Separating volume channels (media, bell, alarm) is a key feature of Android, allowing you to customize the sound for different scenarios independently of each other.
Hardware causes and maintenance
The physical factor can't be ruled out, too. Over time, the speaker can degrade and its frequency response shifts toward higher frequencies, which are perceived as louder and more unpleasant, and the oxidation of the contacts of the speaker plume, especially if the phone has been in contact with moisture, can also be the cause.
If software methods don't help, and the sound stays unnaturally loud or there's a crack at any volume, it may be necessary to replace the speaker. It's an inexpensive procedure that can be performed in a service center. Xiaomi's original speakers have strictly defined parameters of resistance and sensitivity.
Check the screen screen, too, if they close the speaker's slot or have a thickening in that area, the sound can reflect and create a resonance effect, increasing perceived loudness.