Quiet phone conversation is one of the most annoying problems faced by Xiaomi, Redmi and Poco smartphone owners. The interlocutor may complain that you can’t hear well, or you stop making out words in a noisy place. This does not always mean that the device breaks down, often the cause lies in software restrictions or banal pollution.
Android has hidden settings that allow you to adjust the volume level regardless of the standard sliders. Before you bring the gadget to the service, you should try software methods to increase the audio stream. In this article, we will discuss all the safe ways, from simple cleaning to using an engineering menu.
It is important to understand that maximum signal amplification can lead to distortion or wheezing. Forced increase of speaker power beyond the factory limits in the engineering menu can lead to its overheating and rapid failure. Use these methods wisely so as not to damage the hardware of your device.
Physical inspection and cleaning of speakers
The most common but often ignored cause of silent sound is dust, and the mesh of a speaker on the top end of a smartphone gets clogged with pile, skin fat and street dust over time, creating a physical barrier to the sound wave, even a powerful speaker.
To clean, you'll need a soft toothbrush, paint tape, or special cleaning foam. Don't use sharp objects like needles or pins, as they can easily damage the membrane. Walk gently through the hole, then glue and tear off the tape to pull out the contaminants.
Also check if the sound is covered by a protective glass or cover. Some thick glass has cutouts that shift over time or are initially inaccurate. If the speaker is closed, the sound will be deaf and quiet, regardless of the software settings.
- 🧹 Take a soft brush or toothbrush for delicate cleaning of the mesh.
- 💨 Use a spray of compressed air to blow dust out of hard-to-reach places.
- 🧼 Wipe the speaker area with an alcohol wipe to remove fat plaque.
- 📱 Remove the protective case and check if it covers the upper end.
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Use the Sound Vibration Massage (if available in your model) or special frequency generator applications to vibrate the dust out of the speaker grid.
Basic volume setting in the system
Before you go deep into the settings, make sure you set up the standard sliders correctly.The MIUI or HyperOS shell has volume separation into media, alarm clock, notifications and most importantly, calls.
When you talk, press the volume buttons. A slider will appear on the screen. Notice the pipe icon or phone icon next to it, which is the volume of the person you're talking to. Often, users mistakenly add the volume of the media, thinking that it will help in the conversation.
It's also worth checking whether Quiet or Do Not Disturb mode is on, which can limit the sound of incoming beeps, although the volume of the conversation itself is rarely affected, and make sure that the sound settings activate the "Normal" or "Loud" profile.
Some Xiaomi models have a Sound Improvement feature that automatically adjusts the equalizer. Try turning it on and off to see how it affects speech intelligibility in your particular case.
Using the Engineering Menu to enhance
The engineering menu is a powerful tool for diagnosing and tuning the hardware of a smartphone, and this is where you can force the gain of the microphone and the speaker to increase, and it uses special code to access it, which runs on most MediaTek processors and some Snapdragon processors.
Open the Phone app and dial the combination ##3646633##. If the code didn't work, try ##4636## or download the Engineer Mode MTK app from the Play Market. From the menu that opens, go to the Hardware Testing tab.
Find the Audio -> Audio Debug section. Here you will see a list of scripts (Scenarios). Select Normal Mode (normal mode) or Headset (headset) if you have a problem with headphones. In the type of sound (Type), select Media or Sph (Speaker Phone) and Mic (microphone).
You're interested in Level and Digital Gain, and you turn it up, you turn it up, but be careful, you can get a lot of distortions above 100-120, and then you can hit Set and check it with a test call.
☑️ Setting up the engineering menu
⚠️ Warning: Don't change the values in the parts that you're not sure about. Resetting audio settings can lead to complete loss of sound in the system, which will be difficult to restore without flashing it.
Set up the equalizer and Dolby Atmos
Modern Xiaomi smartphones are often equipped with surround sound technologies such as Dolby Atmos or the proprietary equalizer MI Sound.These tools can not only improve the quality of music, but also make speech clearer and louder.
Go to Settings -> Sound and Vibration -> Sound quality and effects. Here you can select a sound profile. The Voice or Pop profile is the best for conversations, since they raise the average frequencies on which human speech lies.
If you have Dolby Atmos on, try switching between Auto, Video, Music and Voice. In Voice mode, the system artificially allocates the frequencies of speech, making the interlocutor audible even at low general volume.
Also on this menu is a setting called "Mi Sound Enhancer." Make sure it's activated and you select the General or Mi headphone type if you're using a headset. For a conversational speaker, these settings can also make adjustments to the final sound.
| Sound mode | Impact on frequencies | Recommendation |
|---|---|---|
| Standard. | Equal distribution | Basic setting |
| Voice/Vocal | Rising of the average frequencies | Perfect for calls. |
| Bass/Bass | Low frequency amplification | Not recommended for speech |
| Pop/Pop | Bright high and medium | Good legibility. |
Secret codes for audio resetting
Applications to increase volume
If there is not enough system tools, third-party apps from Google Play come to the rescue, and they act as software amplifiers, forcibly raising the signal level above the standard Android limit.
One of the most popular solutions is Precise Volume or Volume Booster GOODEV. These applications allow you to adjust the volume curve with 1% increments, rather than the standard 15 steps of the system. You can create a "Conversation" profile where the volume will be twisted to the maximum.
Another effective method is to use speaker cleaning applications like Clear Speaker, which play back sound frequencies that push water and dust, which indirectly returns the lost volume.
However, remember that third-party applications consume CPU resources and may conflict with system settings. If after installing such software, the sound begins to wheez or crackle, immediately delete the application.
- 🚀 Volume Booster – a simple application with one gain slider.
- 🎚️ Precise Volume – fine-tuning the volume curve for different scenarios.
- 🧹 Clear Speaker – utility for cleaning speakers with sound vibration.
- 🎛️ Equalizer & Bass Booster – Comprehensive Frequency and Amplification.
⚠️ Attention: Long-term use of software amplifiers at maximum power can lead to overload and combustion of the speaker coil.
Problems with Bluetooth headsets and network
Sometimes the quiet sound is not related to the phone itself, but to the quality of communication or connected devices. If you use a Bluetooth headset or headphones, check their own volume. Often, headphones have independent adjustments that you need to set to maximum.
In addition, Bluetooth Android has the option "Absolute Volume" in its settings. If it's turned off, the phone and headphone sliders work separately. Try turning this feature on or off in the Developer Menu (Switch off Absolute Volume).
As for the cellular network, in areas of uncertain reception (1-2 dividing) the phone automatically reduces the transmission power, which can affect the quality and volume of the sound. 2G/3G (only voice) sometimes gives a more stable and loud sound than an overloaded one 4G/LTE.
It is also worth checking if the function is not included. HD Voice (VoLTE) On some older models or certain carriers, this feature may not work properly, making the sound quieter, albeit better. Try turning it off. HD-call-up SIM-map.
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If the sound is quiet only when using Bluetooth, the problem is almost always in the desynchronization of the volume of the device and the headset, solved through the developer menu.