How to increase the volume of the speaker when talking on Xiaomi Redmi: 7 proven ways

The weak sound in the conversational dynamics of Xiaomi Redmi is one of the most common problems faced by owners of budget and mid-budget models of the brand. Even in a quiet environment, it is sometimes difficult to hear the interlocutor, and in noisy conditions (outdoors, in transport), the conversation turns into torture. The reasons can be different from trivial settings to hardware malfunctions. In this article, we will examine all possible ways to increase the volume of the speaker, from standard MIUI functions to engineering menus and hardware checks.

It's important to understand that not all methods are equally safe. Some require root rights, others can lead to a loss of warranty if you interfere with system files. We have noted the risks in each section so you can choose the best option. If after all the manipulations the sound remains quiet, the problem is most likely in the hardware (contaminated speaker, disconnected contact or defective amplifier).

Let’s start with the easiest and safest ways – you may not even have to dig deeper!

1. Checking basic volume settings

Before you go to the engineering menu or install third-party apps, make sure that the problem is not the trivial settings. Xiaomi Redmi (especially models on MIUI 12-14) have separate volume controls for multimedia, alarm and conversational speaker. Often users accidentally hit the volume buttons during a call, reducing the level to a minimum.

How to check:

• 📞 Press the up/down volume button during the call – a slider should appear on the screen with the inscription “Call Volume” (not to be confused with Multimedia!).
• 🔊 Go to Settings. → Sound and vibration → Loudness and make sure the call slider is at its maximum.
• 🚫 Turn off the mode Do not disturb (Settings) → Don't disturb - it can block the sound of calls.

If the slider is already at its maximum, but the sound is still quiet, move to the next section. On some Redmi Note 10/11 and Redmi 9/10 models, there is a bug: after the MIUI update, the equalizer settings for calls are reset, which is not known!

2. Cleaning dynamics from dust and debris

One of the most common causes of silent sound is speaker pollution, and dust, pocket villi, or small debris can block the membrane, making the sound muffled, especially for models with a lower speaker (such as the Redmi Note 10 Pro or Redmi 9T), which often gets clogged.

How to clean the speaker:

• 🧹 Use a soft brush (for example, to draw or clean the keyboard) - gently run it through the speaker grille.
• 💨 Compressed air (a canister for cleaning equipment) - blow the hole with short pulses, holding the balloon vertically.
• 📱 Toothbrush with soft bristles - slightly rub the grille without pressing.
• ❌ Do not use sharp objects (needles, toothpicks) - the risk of damage to the membrane!

If the sound has improved after cleaning, but not to the end, try blowing the speaker manually: apply your lips to the hole and exhale sharply (don’t suck in air!).This helps remove deep dust. Xiaomi Redmi with dual speakers (for example, Redmi K40) require cleaning both the top and bottom holes.

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After cleaning, check the sound with a test: dial ##4636## → Phone information → Check the speaker. If the sound is cleaner but still quiet, the problem is in the settings or hardware.

3. Equalizer adjustment and sound improvement via MIUI

MIUI has built-in audio enhancement tools, but they are often hidden in the depths of the menu. For example, the default equalizer can be configured to a flat profile that is not optimized for voice calls.

How to set up:

1. Open Settings → Sound and vibration → Equator.
2. Select a Voice or Speech profile (if you have one), if you don't, manually lift the sliders by 1-3 kHz (the frequency of the human voice).
3. Enable Voice Improvement (if available) – it’s on the Redmi Note 11 and later.
4. Check the Audio Effects settings (Settings → Additional → Audio Effects) – turn off all unnecessary filters.

Some models (like the Redmi K50) have a hidden feature called Loudness in the headphones, which also affects the speaker, to activate it:

Settings → Special features → Hearing Improvement → Call Volume

4.Use of the Engineering Menu (MTK/Qualcomm)

If the standard settings didn’t work, you can try to turn up the volume through the engineering menu.This method works on most Xiaomi Redmi, but requires caution – incorrect changes can damage the speaker!

Instructions for Qualcomm processors (most Redmi):

1. Open the Phone app and dial ##4636##.
2. Select Phone Information → Check the speaker.
3. Listen to test sounds – if they are loud and quiet during the call, the problem is in the MIUI settings.
4. To manually adjust the volume, dial ##36446337## (not working on all models).

For Mediatek processors (e.g. Redmi 9A, Redmi 8A):

1. Dial ##3646633##.
2. Go to Hardware Testing → Audio.
3. In the Normal Mode section, find the Sph (microphone) and Sph2 (dynamics) settings.
4. Increase Max Vol values by 5-10 units (don’t bet the maximum!).

⚠️ Warning: Increased volume through the engineering menu can cause sound distortion or damage to the speaker over prolonged use.Do not raise values above 200 for Qualcomm and 160 for Mediatek.

Make a backup copy of the data

Write down the current parameter values

Do not change other settings except volume.

Reboot your phone after the changes

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5. Third-party applications for sound amplification

If you don't want to take risks with the engineering menu, you can use the apps from Google Play, which run on top of the system settings and can turn up the volume without root rights, but the efficiency depends on the phone model and the version of MIUI.

Top.-3 sound-enhancement:

• 🔊 Volume Booster GOODEV — Simple booster with pre-profiles for calls.
• 🎧 Equalizer & Bass Booster – allows you to configure the equalizer separately for calls.
• 📞 Sound Amplifier (from Google) – amplifies real-time audio (requires Android 9)+).

How to use:

1. Install the app and give access to the Sound Settings.
2. Select the Call profile or Voice profile.
3. Raise the volume slider by 20-30% (no more!).
4. Check the sound during the test call.

Note: Some apps (e.g. ViPER4Android) require root rights and do not work on all versions of MIUI. On Redmi with Android 12+, they may not run due to Google restrictions.

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Boost applications increase volume by software processing, which can lead to loss of quality (wheezing, distortion), and the best option is to use them only in noisy conditions.

6. Hardware causes of silent sound and their elimination

If none of the software methods worked, the problem is probably hardware, and here are the most common reasons and ways to fix them:

Self-repair is recommended only if you have experience with electronics. For example, replacing the speaker with a Redmi Note 10 requires care - you can accidentally damage the battery plume or the camera. If the phone is warranty, you should contact the Xiaomi service center.

⚠️ Note: Xiaomi Redmi with water protection IP53 (For example, the Redmi Note 11 Pro+) disassembly of the body can violate the leakage, in which case it is better to use ultrasonic cleaning in the service.

7. Alternative methods: headphones, Bluetooth, external speakers

If you can not increase the volume of the built-in speaker, consider alternative options:

• 🎧 Wired headphones with microphone – many Redmi models automatically switch the sound to them during a call.
• 🔵 Bluetooth headset – for example, Xiaomi Mi True Wireless Earbuds or Redmi Buds.
• 🔊 External speaker with Hands-Free support – connects via Bluetooth or via AUX.
• 📱 Hands-free mode – turn it on during the call (the "Loud" button in the call interface).

MIUI 13/14 has a Smart Response feature (Settings → Special Features → Smart Response) that automatically switches the sound to the speaker if you lift the phone to your ear. This is convenient, but it doesn't work on all models.

If you make frequent calls in noisy places, consider buying an external microphone (like a Lavalier) – it connects to a 3.5mm connector or via USB-C and improves voice quality.

FAQ: Frequent questions about the volume of the speaker on Xiaomi Redmi