How to increase the volume of sound when talking on Xiaomi smartphones: step-by-step instructions

Have you noticed that when you talk to Xiaomi, the person you are talking to is not audible and your voice barely reaches you? The problem of low microphone volume or speaker during calls is one of the most common among smartphone owners of this brand, and the reasons may lie in both the software limitations of MIUI and the hardware features of a particular model (for example, the Redmi Note 10 or POCO X3).

In this article, we’ll look at 7 proven ways to increase the volume of a conversation, from basic settings to hidden engineering menu features to third-party utilities. Importantly, some methods require root rights or may affect warranty, so read the warnings carefully before you act. If a problem occurs after a firmware update, try resetting the sound to factory first.

First, determine what exactly isn’t working:

• 🔊 The interviewee doesn't hear you well. → microphone-problem.
• 🔈 You can't hear the interviewer. → speaker-problem.
• 📞 Volume changes arbitrarily → Possible failure in adaptive sound settings.

1. Checking basic volume settings

Before digging deep, make sure the problem isn't with the basic settings. During a call, a volume slider appears on the Xiaomi screen - many users accidentally slide it down and forget to return it back.

How to check:

• 📱 During the call, press the up/down volume button on the side panel of the smartphone.
• 🔊 Make sure the Call Volume slider (not media!) is set to maximum.
• 🔇 Check if no sound or vibration is activated in the notification curtain.

If the slider is already at its maximum, but the sound is still quiet, move to the next step. Note: on some models (for example, Xiaomi 12T), the volume of the call and the volume of the media are separated - do not confuse them!

2.Setting up voice improvement in MIUI

MIUI has a built-in voice enhancement feature that automatically suppresses noise and amplifies voice, but sometimes it doesn't work properly, either overly aggressively suppressing the sound or not turning on at all.

How to set up:

1. Open Settings → Sound and vibration → Improve voice.
2. Activate the voice improvement switch.
3. Select a mode: 🎤 «Clear voice – suitable for quiet rooms. 🏙️ «Noisy atmosphere – increases voice in the background (street, cafe). 🚗 «In the car – optimizes the sound for conversations in the car.

If you don’t have an option in your firmware, upgrade your MIUI to the latest version or use an alternative method (see the Engineering Menu section). On some models (e.g. POCO F3), this feature is hidden – you need to reset your audio settings to enable it.

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If the sound is even quieter after Voice Improvement is activated, try turning off this feature and using manual microphone tuning (see Section 4).

3. Resetting the sound settings to factory

Failures in audio settings often occur after updating firmware or installing third-party applications.Resetting sound parameters to factory values can solve the problem without losing data.

Instructions:

• 🔧 Go to Settings. → System and device → Resetting settings.
• 🔊 Select “Reset Sound Settings” (not to be confused with a full reset!).
• 🔄 Confirm the action and restart the smartphone.

After the reboot, check the volume during the call. If the problem persists, move to deeper settings. Note: this method does not delete your files or applications, but resets all individual audio settings (alarm clocks, melodies, profiles).

4 Manual volume increase through engineering menu

If standard methods don’t work, you can manually increase the microphone volume and speaker through the engineering menu (#4636##).This method works on most Xiaomi models, but it requires caution – incorrect settings can lead to distortion of the sound.

Step-by-step:

1. Open the Phone app and enter the code ##4636##.
2. In the menu that opens, select “Phone Information” (or “Audio” if you have one).
3. Scroll down to the Volume block and find the options: 🎤 Sph (Speech) – The volume of the microphone. 🔊 Sph2 (Speech2) — volume of the speaker during the call. 📞 Ring (Call) – The volume of the incoming call.

5-10 units

🔄 Save the settings and restart the phone.

Note: If you have wheezing or distortions in the engineering menu after changing the parameters, return the values to the original and try another method. On some models (for example, Redmi 9A), the engineering menu may be blocked - in this case, use the applications from section 5.

5.Apps for amplifying sound (without root)

If you don't want to go through the settings manually, you can use third-party apps that run on top of system audio drivers and can turn up the volume without root.

Top.-3 applications:

• 🔊 Volume Booster GOODEV — A simple booster with pre-profiles for calls. Download to Play Market.
• 🎛️ Precise Volume – allows you to fine-tune the volume for each type of sound (including calls). ADB-permitting.
• 📞 Sound Amplifier (from Google) – enhances the sound in headphones and dynamics, but does not work on all Xiaomi models.

How to use the Volume Booster GOODEV:

1. Install the application and open it.
2. Select the Call Volume tab (calling volume).
3. Move the slider 120-150% (no higher, otherwise there will be distortions).
4. 🔄 Restart your phone to apply changes.

Make sure the system volume is at its maximum.

Close all background applications that use sound

Check that the headphones are not connected (they can block the speaker gain)

Back up your audio settings (via the engineering menu)

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⚠️ Note: Boost apps may conflict with system audio services MIUI. If after installation there are artifacts of sound (cracking, echo), delete the application and reset the sound settings (section 3).

Checking the microphone and speaker for hardware damage

If the software methods didn't work, there might be a problem with the physical damage to the microphone or the speaker.

• 💦 Moisture entering connectors (even after “minor” contact with water).
• 📱 Phone drop - microphone could move away from board.
• 🔊 Clogging of the lattice dynamics with dust or dirt.
• 🔌 Damage to the plume after disassembling the phone.

How to diagnose a hardware malfunction:

1. Call another phone and see if the person you are talking to can hear you.
2. Turn on the recorder and record your voice – if the recording is quiet or with noise, the problem is with the microphone.
3. Try using a headset – if it sounds normal, the main speaker is faulty.
4. Light a flashlight into the speaker's grille - if dirt is visible, gently clean it with a soft brush.

If you suspect a hardware breakdown, do not try to disassemble the phone yourself (risk damage to the plumes!). Contact the Xiaomi service center - microphone repair or speaker costs 1,500-3,000 rubles depending on the model.

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If the problem occurs after a fall or contact with water, do not use software to amplify sound - this can aggravate the damage.

7.Alternative solutions: VoIP and external devices

If nothing helps, consider the following ways:

• 📱 Use WhatsApp (WhatsApp, Telegram) for calls – they often provide better sound quality than standard phone service.
• 🎧 Connect Bluetooth headset – even budget models (like Redmi Buds 3) give a clearer sound.
• 🔊 Turn on speakerphone (button on the call screen) – this will redirect the sound to the main speaker, which is usually more powerful than the conversational one.
• 📶 Check the quality of communication – a weak signal network (for example, in the basement) can artificially turn down the volume.

For owners. POCO or redmi with IR-The port has another life hack: connect an infrared headset (for example, Xiaomi Mi). IR Blaster Headset uses a separate audio channel, which can bypass problems with the main microphone.

⚠️ Note: If you are using a double SIM-card, try to change slots - sometimes the problem with volume is associated with a malfunction of the module of one of the slots. SIM. Also check if the “VoLTE” function is activated in the network settings – disabling it can improve the quality of communication.

FAQ: Frequent questions about the volume of sound on Xiaomi