How to increase the volume of conversation on Xiaomi smartphones: from settings to engineering menu

Are you tired of asking your partner to speak louder when making calls on Xiaomi? The problem of low volume is familiar to many smartphone owners of this brand — especially on budget models like the Redmi 9A or Poco M3. Even at maximum volume, the voice of the interlocutor can sound quiet, and background noises can drown out speech. In this article, we will analyze all possible ways to amplify the sound, from basic Android settings to hidden parameters of the engineering menu and specialized applications.

The reasons for quiet sound during calls vary from a clogged speaker to software limitations of MIUI. For example, some Xiaomi models artificially lower the volume of the speaker to avoid distortion. But this does not mean that the problem can not be solved! We tested all methods on current firmware (including MIUI 14/15 and HyperOS) and selected only those that actually work.

If you're ready to get a loud and clear sound back when you're calling, start with the simplest way and gradually move on to the more complex, and if there's a hardware problem (like a damaged speaker), we'll show you how to check it out without going to the service center.

1. Basic volume settings in MIUI

Before you dig deeper, make sure you set the volume correctly in the standard menus. Xiaomi has separate regulators for media, alarm clock and calls - they are easy to confuse.

1. When you call, press the volume buttons on the sidebar, and you'll see a slider that says, "Call Volume."
2. Make sure the slider is pushed to the right. If not, move it.
3. After the call is complete, check the settings in the menu: Settings → Sound and vibration → Volume. Call should be active here (not to be confused with Media or Alarm).

On some models (such as Xiaomi 12T or Redmi Note 11), there is an option on this menu to turn up the volume – turn it on if you have one. Also note the item Do not disturb: if it is activated, the volume of calls can automatically go down.

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If the sound is still quiet after the volume change, try restarting the smartphone. Sometimes MIUI system services reset the audio settings after updates or prolonged work.

Another nuance: Xiaomi has an Adaptive Sound feature that automatically adjusts the volume to the ambient noise, to turn it off (sometimes it doesn't work correctly):

• 🔊 Go to Settings. → Special facilities → Audio/Sound.
• 🔇 Find the Adaptive Sound and deactivate it.
• 🎧 If you use headphones, check the settings in Settings → Connected devices.

2. Cleaning up the conversational speaker

Often, the silent sound is caused by a banal pollution of the speaker: Dust, hair, or even moisture droplets can block the sound waves, causing the voice of the interlocutor to become muffled. On Xiaomi, the conversational speaker is usually located at the top of the screen (near the front camera) or on the bottom edge (on some models like the Poco X3).

How to clean the speaker without risking damage to it:

• 🧹 Use a soft brush (such as to draw or clean the keyboard) and gently swipe it across the speaker grille without pressing.
• 💨 If you don't have a brush, you can use a compressed air canister (sold in electronics stores). Hold the balloon upright and blow the speaker short.
• 🚫 Do not use toothpicks, needles or wet wipes - this can damage the speaker membrane.

After cleaning, check the sound by calling another phone. If the volume has improved but is still not perfect, move on to the next method. If the sound is not at all or it is severely distorted, this may indicate a hardware malfunction (for example, a departed contact or a damaged membrane).

3. Engineering menu: hidden volume settings

If the standard settings don't work, it's time to look at the Engineering Mode, where you can manually increase the volume of the speaker, bypassing the limitations of MIUI. Attention: incorrect changes in the engineering menu can cause malfunctions in the smartphone. Do everything carefully and do not change the parameters, the purpose of which you do not know.

Instructions for most Xiaomi models (including Redmi, Poco, Mi):

1. Open the Phone app and enter the code: ##4636## Some firmware may run an alternative code: ##36446337###
2. Select Hardware Testing (or Hardware Information).
3. Go to Audio → LoudSpeaker Mode (or Normal Mode for Speaker).
4. In the Type section, select Sph (microphone) or Receiver (talk speaker).
5. In the Value field, set the maximum value (usually 160 or 255, but do not exceed 200 to avoid distortion).
6. Press Set and restart your smartphone.

Some firmware (e.g. HyperOS) may have different paths, and if you don't find the right one, try an alternative method:

• 📱 Install the app MTK Engineering Mode (for MediaTek processors) or Engineer Mode (for Snapdragon).
• 🔧 In the application, go to Hardware Testing → Audio → Normal Mode.
• 🔊 Find Receiver Gain or Sph Gain and increase them by 5-10 units from the current value.

4. Volume-boosting applications

If you don't want to go through the settings, you can use third-party apps that run on top of the system and increase volume through software-based audio processing. Less, some apps can reduce sound quality or add background noise. We tested a few options and selected the best ones:

How to use ViPER4Android (the most powerful tool)

1. Download and install APK with XDA Developers (official version removed from Play Market).
2. Install the ViPER4Android FX driver through the app.
3. In the settings, turn on Master Limiter and set Input Gain to +3 dB.
4. In the Convolver section, select Clear Bass Preset for better voice audibility.

Make sure your smartphone supports installation (check out the XDA forum)

Disable MIUI Optimizations in Developer Settings

Backup current sound settings

Reboot the smartphone after installing the driver-->

⚠️ Attention: Apps like ViPER4Android If after installation there are lags or the sound is completely gone, delete the application and restart the device.

5. Equalizer and sound effects setup in MIUI

MIUI has an integrated equalizer that can be used to improve voice audibility during calls, which does not increase the volume directly, but helps to make the sound clearer by removing low frequencies (which often drown out speech).

How to set up:

1. Go to Settings → Sound and vibration → Equator.
2. Select a Voice or Speech profile (if any). If there are no such profiles, create your own:
3. Reduce sliders at 60Hz and 230Hz (this will lower the bass).
4. Increase the sliders at 1 kHz-4 kHz (this is the range of the human voice).
5. Save the preset and check the sound during the call.

On some models (such as Xiaomi 13 or Redmi K50), there is an additional item called “Sound Effects” in the audio settings.

• 🎵 Voice amplification – increases the volume of speech relative to the background.
• 🔊 Noise suppression – reduces extraneous sounds (useful in noisy places).
• 🎧 3D-sound - expands the sound scene (but can distort the voice).

If your firmware doesn’t have an equalizer, you can add it via the Wavelet app (available on Play Market), which supports audio customization for calls and has presets ready to improve speech intelligibility.

6. Checking microphone and network settings

Sometimes the problem isn't the dynamics, it's the microphone or the quality of the communication, and if the person complains that they can't hear you well, or the sound is interrupted, check:

• 🎤 Microphone: When you call, switch to speakerphone. If your voice is clearer, the problem is with the main microphone (it may be contaminated or damaged). Try cleaning it like the speaker.
• 📶 Network: In a weak signal (e.g., in a weak signal, 2G or 3G) The sound quality is deteriorating. 4G VoLTE (if supported): Settings → SIM-maps and mobile networks → [Yours. SIM] → Type of network → 4G (preferably).
• 🔄 Roaming: If you are roaming, the operator may limit the quality of communication. Try to turn off Data in roaming and use Wi-Fi for calls (via WhatsApp or Skype).

Also check if the function is activated. HD-It improves sound quality, but it can be unstable on some operators to turn it off:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map.
3. Find the VoLTE or Improved Calls option and deactivate it.
4. Restart your smartphone and check the quality of the connection.

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If VoLTE has improved sound after the shutdown, the problem is that your carrier has an unstable function, in which case you should contact the provider’s support or change the tariff.

⚠️ Note: If after all the manipulations, the sound during the calls remains intermittent or robots voice, this may indicate problems with the communication module (antenna or chip.

7 Hardware Solutions and Service Center

If the software methods didn't work, the problem could be hardware, and here are the most common malfunctions on Xiaomi that cause a quiet sound during calls:

• 🔊 Damaged speaker - the membrane is torn or the contacts have left.
• 📱 Problems with the plume - oxidation or breakage of contacts on the motherboard.
• 🔋 Weak battery – with a low charge, the system can limit the power of the speaker.
• 🌊 Moisture intake - even after drying, oxidation may remain.

How to check if you need help from a specialist:

1. Put your headphones on and check the volume through them, and if the headphones are good, the problem is with the speaker or the plume.
2. Call your smartphone from another phone and turn on speakerphone, if the main speaker (bottom) is loud and the conversational sound is quiet, this confirms the malfunction.
3. Check if the phone is heating up during the call, and overheating may indicate a short circuit.

If you suspect a hardware breakdown, don't try to disassemble the smartphone yourself - this can lead to a loss of warranty.Contact the official Xiaomi service center or checked repair.Average cost of replacing the talk speaker on models Redmi/Poco — 800–1500 ₽, on flagships (Xiaomi) 13/14) — 1500–2500 ₽.

FAQ: Frequent questions about the volume of conversation on Xiaomi