How to increase the volume of a call on Xiaomi: from standard settings to hidden features

Are you missing important calls because Xiaomi’s smartphone is too quiet? The problem is familiar to many owners of this brand’s devices – especially on single-speaker models or after the MIUI update. In this article, we’ll look at 7 proven ways to increase the volume of a call, from basic settings to hidden options for engineering menus and third-party utilities.

The reasons for a quiet call can be different: firmware limitations, speaker contamination, hardware malfunctions, or even features of a particular model (for example, the Redmi Note 10 often suffers from low volume due to the design of the case).We will not offer “magic” solutions like “just turn on the sound” – instead, you will receive detailed instructions explaining why this or that method works (or does not work) on your device.

Important: Before you change your system settings, check if the problem is hardware, try playing music or video at maximum volume, if the media sound is also quiet, maybe the speaker or audio chip is faulty, in which case you should contact the service center.

1. Standard volume settings in MIUI

So, to start with the obvious, check the basics of sound, and MIUI has separate controls for the melody of the call, the notifications, and the media, and sometimes users accidentally wipe the call settings by changing the volume while listening to music.

To adjust the volume specifically for incoming calls:

1. Open the Settings. → Sound and vibration.
2. Slip the "Loudness" slider (not to be confused with a separate regulator in the notification curtain!).
3. In the window that appears, select the "Call" tab (usually the far right).
4. Move the slider to maximum and press "OK".

If the volume has not changed after these actions, check:

• 🔊 Sound Profile: The notification curtain must be in the Sound mode (not Vibration or No Sound").
• 🎵 Call melody: some system tunes (e.g, MIUI Ring) is initially quieter than the user's. Try setting your tune through Settings → Sound. → The ringing melody.
• 📱 Do Not Disturb: It can block the sound of calls. Check Settings → Do not worry if the automatic switching rules are active.

If the standard settings don't work, we'll move on to deeper methods, but first make sure that the problem isn't with the melody itself -- some users are setting quieter ones. MP3-files as a ringtone without even knowing it.

2. adjusting the uniformity of sound (Equalizer)

MIUI has a hidden equalizer that can affect the volume of a call, and is optimized for music by default, but its settings sometimes cut high frequencies in call melodies, making the sound seem quieter.

To disable the sound processing:

1. Go to Settings → Sound and vibration → Equalizer.
2. Select the preset "User."
3. Reset all sliders to neutral (center) position.
4. Turn off the option of Adaptive Sound (if you have it in your version of MIUI).

If your firmware doesn't have an integrated equalizer, install a third-party application, such as Equalizer FX or Wavelet.

• 🎛️ Set up the frequency range for calls separate from music.
• 🔊 Increase the volume through pre-amp (pre-amp).
• 🎧 Disable audio processing for system notifications.

💡

If the sound becomes distorted after changing the equalizer, try turning on the "No distortion" option in the app settings, which will limit the maximum volume, but improve the quality.

Importantly, some Xiaomi models (like the Redmi 9A or POCO M3) have a simplified sound system without equalizer support for calls, in which case this method will not work.

3. Engineering menu: hidden volume settings

If standard methods don’t work, you can try changing the audio settings through the Engineering Mode, which works on most Xiaomi devices, but you need to be careful – incorrect settings can lead to distortion of the sound or even damage to the speaker.

Instructions for entering the engineering menu:

1. Open the phone app.
2. Enter the code ##36446337## (or #4636### on some models).
3. Select the section "Hardware Testing" → "Audio".
4. Go to the "LoudSpeaker Mode" tab (or "Speaker").
5. In the Max Vol field, set the value 160 (usually 140-150 by default).
6. Press Set and restart the device.

Warnings:

⚠️ Note: Setting a value above 160 may cause sound distortion or damage to the speaker. Start with a minimum magnification (e.g. 150) and check the sound quality.

⚠️ Note: On some devices (Redmi Note 8 Pro, POCO X2) Changes to the engineering menu are reset after restarting, in which case you will need to repeat the procedure or use the system. ADB.

If the engineering menu is missing or does not save settings, try an alternative method using ADB (described in the next section).

4. Volume increase through ADB (no root)

For advanced users, there is a way to change the system volume settings through Android Debug Bridge (ADB). This method does not require superuser rights, but requires a computer and a computer. USB-cable.

Step-by-step:

1. Turn on USB debugging on your smartphone: Go to Settings → About Phone. Tap 7 times on MIUI Version to activate Developer Mode. Go back to Settings → Additional → For Developers. Activate USB Debugging.

Terminal

adb devices

The name of your device should appear.

15

adb shell settings put system ringtone_volume 15

adb reboot

If the team doesn’t work, try an alternative:

adb shell media volume --stream 2 --set 15

(where --stream 2 corresponds to the "calling" stream).

Install Xiaomi drivers on PC|Download. ADB Tools (platform-tools)|Put the debugging on. USB phone-on|Connect the original USB-cable|Check the connection with the adb device command-->

This method works on most Xiaomi devices, but some models with custom firmware (such as Xiaomi.eu) may need to root. ADB-commands do not give effect, move to the next method.

5. Volume-boosting applications

If system methods do not help, you can use third-party utilities.The best applications for increasing the volume of calls on Xiaomi:

How to use amplifiers correctly:

• 🔊 Start with minimal reinforcement (e.g, +10%) and gradually increase by checking the sound quality.
• 🎧 Turn off all effects (reverb, bass) – they can additionally “cut” the volume.
• 📱 Watch the temperature of the device: some applications overload the processor, which leads to overheating.

💡

Rootless applications (such as Volume Booster) work through software amplification, which can degrade the sound quality. For best results, use root-rights-enabled utilities.

Important: Some applications (e.g. ViPER4Android) require additional configuration via Audio Compatibility Patch to work correctly on MIUI.

6. Hardware reasons for quiet call

If the software methods didn't work, the problem could be the hardware.

• 🔈 Contamination speaker: Dust and pile accumulate over time in the speaker grille, which mutes the sound. Clean the hole with a soft brush or compressed air.
• 🔧 Speaker damage: If the sound is distorted or completely absent, it may be that the speaker is moving away from the contacts or is damaged.
• 🔋 Weak battery: with a low charge (less than 15%), the system automatically lowers the volume to save energy.
• 📲 Audio chip malfunction: If sound is lost in all applications (music, video, calls), the problem may be in the sound chip.

How to check if there is a hardware problem:

1. Put your headphones on and check the volume of the call through them. If the headphones sound normal, the problem is the dynamics.
2. Record a video with the sound on and play it back. If the sound is silent, it's a software problem.
3. Try playing the sound through an external Bluetooth speaker, and if the volume is normal, the built-in speaker is faulty.

If you suspect a hardware malfunction but are not sure of its cause, you can use the diagnostic codes of Xiaomi:

• For the test, the dynamics are ##0673## or #0289###.
• To check the microphone and audio chip: ##36446337# → Audio → Mic Test.

7. Alternative solutions: vibration, light notifications

If you can’t increase the volume of the call, you can compensate for this by other notification methods:

Vibration setting:

• Go to Settings → Sound and vibration → Vibration when calling.
• Select an intense vibration mode (e.g., "Strong").
• Activate the “Rise Vibration” option (if available in your model).

Lighting notifications:

• Turn on the flash when calling: Settings → Special features → Notification flash.
• Set up the color lighting (on models with the AMOLED-screens: Settings → Screen. → Illumination of notifications.

Voice notifications:

• Install Say My Name or Speaker Notifications, which will voice the caller’s name.
• Enable the built-in Call Voice function (if available): Settings → Additional → Special Features → Voiceover.

These methods won’t replace loud calls, but they will help you keep important calls in noisy places, especially useful for Xiaomi users with hearing problems or high levels of external noise.

FAQ: Frequent questions about the volume of the call on Xiaomi