How to increase the volume of conversation on Xiaomi smartphones: from standard settings to hidden features

You're talking on the phone, but you can barely hear people's voices even at maximum volume? The problem of low sound during calls is one of the most common complaints of Xiaomi smartphone owners, especially on budget models like the Redmi Note or POCO. The reasons can lie in both the software limitations of the MIUI system and the hardware features of the speaker. Fortunately, you can solve the problem without going to the service center - just know where to look for hidden settings and how to set them up correctly.

In this article, we’ll look at 7 proven ways to increase the volume of conversation on Xiaomi, from basic audio settings to working with engineering menus and third-party utilities. You’ll learn how to bypass the limitations of MIUI, what parameters are responsible for amplifying the sound in the dynamics, and what to do if the problem lies in the hardware. All instructions are suitable for models of 2018-2026 release, including Xiaomi 13/14, Redmi Note 12/13 and POCO F5/X5.

Before you start setting up, check the obvious: make sure the speaker doesn't have a protective film (it's often forgotten to remove after buying it), and the headphone jack is clean of dust. If the sound is gone abruptly, it might be a MIUI update or mechanical damage. In such cases, try restarting the phone first.

1. Standard volume settings in MIUI

So to start with, it's probably solved by adjusting the basic parameters of sound, and MIUI has separate regulators for media, alarm clocks and calls, which are easily confused.

1. When you call, press the volume button (usually located on the left end of the smartphone) and a slider will appear that says "Loudness of call".
2. Make sure the slider is pushed to the right, and if it's locked, it means that the system has a volume limit (more on that below).
3. After the call is complete, check the settings in the menu: go to Settings → Sound and vibration → Volume and adjust the Call slider.

If the sound is too quiet at the maximum level, try to turn on the “Amprovement of Sound” mode (not available on all models):

• 🔊 Go to Settings. → Special facilities → Improved hearing.
• 🔊 Activate the option to amplify the sound when talking (if you have one in your version). MIUI).
• 🔊 In some firmware, this item is called Audio Amplification or Mode for the hard of hearing.

Important: On some Xiaomi smartphones (e.g. Redmi 9A or POCO M3), the maximum volume of conversation is artificially limited due to a weak speaker, in which case the standard settings will not help - you will have to use an engineering menu or third-party applications (more about this below).

2. Reset volume restrictions through the engineering menu

If standard settings fail, there are likely hidden limits on maximum volume in the system, which can be removed through the Engineering Mode, but beware: incorrect changes can lead to a malfunction of the speaker.

Instructions for most Xiaomi models:

1. Open the Phone app and enter the combination: ##36446337###
2. If the code didn’t work, try the alternative: ##4636## → Select Hardware Testing → Audio.
3. In the engineering menu, go to the Hardware Testing → Audio → LoudSpeaker Mode tab.
4. Find Max Vol or Volume options for Sph (microphone) and Sph2 (dynamics). Increase your values by 5-10 units (do not set maximums so as not to damage the speaker!).
5. Save the changes and restart the phone.

Record the current parameter values|Do not increase the volume by more than 20% of the standard|Reboot your phone after the changes|Check the sound on different types of calls (normal, VoIP)-->

Critical Warning: Setting values above 150-160 in Max Vol parameters can cause sound distortion or damage to the speaker. The optimal range for safe amplification is 130-145.

⚠️ Note: Some models (e.g. Xiaomi Mi 11 or Redmi) K40) The engineering menu can be blocked, and in this case, use applications like this. MTK Engineering Mode (for MediaTek processors) or Qualcomm Engineer Mode (for Snapdragon).

3.Use of third-party applications to amplify sound

If you're too risky to work with the engineering menu, you can use specialized utilities to get around the limitations. MIUI without manual system setting editing.-3 tested applications:

How to use the Volume Booster (example:)

1. Download and install the app from Google Play.
2. Launch it and give access to the sound settings.
3. In the Call Volume section, move the slider 15-20% above the standard maximum.
4. Activate the Apply on Boot option to save the settings after the reboot.

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If the sound becomes distorted after installing the app, reduce the gain by 5-10% and check the speaker for dust or damage.

Note that some applications (like Precise Volume) require root permissions to work with system settings. If you are not ready to get root, choose utilities marked No Root.

4. Equalizer and sound effects setup

Sometimes the problem is not the volume, but the frequency response: for example, voices of interlocutors can disappear amid noise due to incorrect equalizer settings. MIUI has a built-in tool for adjusting sound - Mi Sound Enhancer.

How to set up an equalizer for calls:

1. Go to Settings → Sound and vibration → Equator.
2. Select a Voice or Conversation profile (if any).
3. Manually lift sliders in the range of 1-4 kHz (the frequency of human speech).
4. Turn off the Adaptive Sound option if it interferes.

If there is no built-in equalizer, install a third-party equalizer, such as Wavelet:

• 🎛️ Download Wavelet from Google Play.
• 🎛️ Select your Voice profile and activate the Auto option EQ.
• 🎛️ In the Limiter section, turn off the volume limiter.

On models with stereo speakers (such as the Xiaomi 13 Pro or POCO F4 GT), check if one of the speakers in the settings is disabled. To do this, go to Settings → Display and Sound → Stereo speakers and make sure that the option is activated.

5. Checking hardware problems

If the software methods didn't work, maybe the problem is the hardware, and here are the most common reasons for quiet noise when you make calls.

• 🔧 Polluted speaker: Dust, fibers, or moisture can block the sound holes. Clean them with a soft brush or compressed air.
• 🔧 Damaged speaker plume: A frequent problem after falling or disassembling the phone.
• 🔧 Faulty microphone: If the other person is also hard to hear, check the microphone using the Phone Tester app.
• 🔧 Oxidized contacts: Moisture can cause corrosion on the board, in which case only the service center will help.

How to check the speaker for hardware malfunctions:

1. Install the Phone Doctor Plus app from Google Play.
2. Run the Speaker test, if the sound in the test is normal and the calls are quiet, the problem is in the software settings.
3. Try to call through headphones, and if the sound is loud and the dynamics are quiet, the hardware module is to blame.

⚠️ Warning: If the speaker becomes even quieter after cleaning or wheezing, immediately stop using the phone for calls. This may indicate a short circuit in the speaker that will lead to its final breakdown.

Xiaomi’s infrared-port models (like the Redmi Note 10 Pro) sometimes have driver conflicts that cause the sound to be muted during calls, in which case resetting network settings will help:

Settings → System → Resetting → Resetting Wi-Fi, mobile network and Bluetooth

6. Update firmware and reset settings

Some versions of MIUI (especially 12.5-14) have bugs that cause calls to drop to a minimum after the update.

Method 1: Update the firmware

• 📱 Go to Settings. → The phone. → Updating the system.
• 📱 If you have an update, install it. Often new versions fix sound bugs.
• 📱 After the update, check the volume in Settings → Sound and vibration.

Method 2: Reset the sound settings

• 🔄 Open the Settings. → System system → Resetting settings.
• 🔄 Select Reset All Settings (not to be confused with a full reset!).
• 🔄 After restarting, reset the volume of calls.

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If the problem has occurred after the MIUI update, try rolling back to the previous firmware version using the Mi Flash Tool.

On custom firmware models (like LineageOS or Pixel Experience), the problem of weak sound during calls is more common, in which case installing a special kernel that supports sound mods, such as FrancoKernel, will help.

7. Alternative solutions: VoIP and Bluetooth

If none of these methods worked, consider alternative calls:

• 📞 Use VoIP: Apps like WhatsApp, Telegram, or Google Meet often provide louder, cleaner sound than standard calls.
• 🎧 Connect Bluetooth headphones: Wireless headsets (like Xiaomi Buds or Redmi AirDots) usually have better noise cancellation and volume.
• 🔊 Turn on speakerphone: During a call, tap the speaker icon to switch to an external speaker (but note that this will reduce the privacy of the conversation).

For owners of Xiaomi with Dual support SIM There is another life hack: sometimes the volume of calls depends on the used SIM-Try calling another one. SIM — The problem may be with the operator’s settings.

If you make frequent calls in noisy places, install Krispi, which suppresses background noise and amplifies the voice of the interlocutor through AI algorithms, and it works for both regular calls and VoIP.

FAQ: Frequent questions about the volume of conversation on Xiaomi