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

Are you missing important phrases in phone conversations because of the quiet sound on Xiaomi? The problem of low volume during calls is familiar to many owners of smartphones of this brand — from budget Redmi to flagship Mi. The reasons can lie in both the software limitations of MIUI and hardware features of the speakers. But the good news is that in 90% of cases, the volume can be increased without going to the service center.

In this article, we will discuss 7 proven methods, from basic settings to hidden functions of the engineering menu, you will learn how to raise the volume of the microphone for the interlocutor, amplify the sound in the dynamics, and what to do if the problem appears only in headphones. All instructions are relevant for models 2018-2026 based on MIUI 12-14 (including POCO, Black Shark and Redmi Note).

Before you start setting up, check the obvious: is the speaker covered with a cover or a finger, is not on the mode "Do not disturb", and there is no mechanical damage to the speaker grid. If everything is fine, move to the first methods.

1. Basic volume settings in MIUI

Start with the standard system tools. MIUI has separate regulators for media, alarm clocks and calls — but not everyone knows that the volume of a conversation is set separately.

How to change it:

• 📞 When you call, press the volume buttons on the sidebar. A slider will appear that says "Call" - adjust it to maximum.
• 🔊 If the buttons don’t respond, unlock the screen and try again (on some models). POCO The adjustment works only with an active display).
• 🔧 Go to Settings. → Sound and vibration → Volume and check if the Calls slider is reset to a minimum.

An important nuance: on some firmware (for example, MIUI Global for the European market), the maximum volume is artificially limited due to EU regulations, in which case the engineering menu or third-party applications will help.

2. Enabling sound amplification in special features settings

Sound Amplification is originally designed for hearing-impaired users, but it can be used to increase the volume of conversations, and it works at the system level and does not require root rights.

Activation algorithm:

1. Open the Settings. → Special facilities.
2. Select the item "Amprovement of sound" (some firmware called "Audio-amplification").
3. Activate the switch and move the speaker “Speak Volume” to the maximum.
4. In the “Mic settings” section, enable the “Amprovise voice” option – this will improve the audibility of your voice for the interlocutor.

On the Redmi 9/10 and POCO M3/M4, light background noise may appear after this feature is turned on. To remove it, reduce the Noise Cancel slider by 20-30%.

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If your version of MIUI does not have the option of “Amprovement of Sound”, upgrade to the latest stable version of the firmware or install Google Phone from the Play Market – it has a similar feature.

3. Engineering menu: hidden volume settings

The Engineering Mode allows you to bypass the software limitations of MIUI and manually set volume parameters for the speaker. Careful: the wrong settings can cause the sound to be distorted or the speaker to be damaged!

Step-by-step:

1. Open the Phone app and enter the code: ##36446337##Some models (POCO X3, Redmi K40) may have an alternative code: ##4636###
2. From the menu that opens, select Hardware Testing → Audio → LoudSpeaker Mode.
3. Find the parameters: Sph Max Vol - the maximum volume of the microphone (set the value 255), Sph2 Max Vol - an additional microphone (if any, also 255), Ring Max Vol - the volume of the call (not to be confused with conversation!), Media Max Vol - the volume of media (music, video). Voice Call Max Vol - the main parameter for conversations (set 160-180, not higher!).

Press “Set” to save and restart the smartphone.

Warning: Voice Call Max Vol values above 180 can cause wheezing in the dynamics. If the sound is distorted after the changes, return the setting to factory (128-140).

4. Resetting the sound settings to the factory

If the problem occurs after a firmware update or app installation, resetting audio settings can return factory volume, a method that does not affect personal data, but resets all user audio settings.

Instructions:

• 🔄 Go to Settings. → System and device → Resetting settings.
• 🔊 Select “Resetting Sound Settings” (on some models, the item is called “Resetting Media Settings»).
• 📱 Confirm the action and restart the smartphone.

After reset, check the volume of the conversation — if the problem was a software failure, the sound should normalize. If not, move to the next method.

1. Record the current equalizer settings (to take a picture)

2. Check the volume level in the headphones (for comparison)

3. make sure that the problem is not in the network operator (call from another phone)

4. Save important audio files (calls, voice notes)-->

5. Third-party applications for sound amplification

If the system methods didn't work, use specialized utilities that work on top of the MIUI and allow you to fine-tune the volume.

How to install and configure:

1. Download the app from the Play Market or the official website (for ViPER4Android – from the XDA Developers forum).
2. Launch the utility and give access to the sound settings.
3. Under “Augmentation” or “Boost”, set the value of +15-20% for “Call Volume”.
4. Restart your smartphone and check the volume.

⚠️ Attention: Apps like ViPER4Android may conflict with MIUI-If you have lags or overheating after installation, turn off the function «MIUI Optimization in the Developer Settings (Settings) → The phone. → Version. MIUI — Press 7 times to unlock).

6. Checking hardware problems

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

• 🔍 Speaker test: Call another phone and turn on speakerphone. If the speaker sound is clear and loud, the problem is the conversational speaker.
• 🎧 Headphone test: Connect wired headphones and check the volume. If they sound normal, the smartphone speaker is faulty.
• 📶 Network test: The problem may be a weak signal from the operator. Try calling in the confident area or with another person. SIM-card.
• 💧 Moisture check: If the smartphone fell into the water, the speaker contacts oxidized.

Typical hardware causes of silent sound:

• Clogging of the mesh speaker with dust / tile (cleaned with a soft brush or compressed air).
• Separation of contacts dynamics from the fee (requires rations).
• Wearing the membrane speaker (typical for smartphones older than 3 years).
• Damage to the audio chip (for example, after a failed update).

If the diagnostics show a hardware malfunction, contact the service center.

• Cleaning dynamics - 500-1000 ₽.
• Replacement of the speaker - 1500-3000 ₽ (model-wise).
• Repair of contacts - 2000-4000 ₽.

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Before visiting the service, make a backup copy of the data - during the repair, a complete reset of the smartphone may be required.

7. Alternative solutions: from headphones to VoIP

If you can not increase the volume of the conversation, consider the workaround options:

• 🎧 Use headphones with a microphone: Even budget Xiaomi Basic or Redmi Earbuds will provide clear sound. In the call settings, select Headphones as the output device.
• 📞 Turn on speaker: During a conversation, press the speaker button. The sound will go through the main speaker, which is usually more powerful than the spoken speaker.
• 🌐 Go VoIP: Apps like WhatsApp, Telegram or Google Meet use the Internet to transmit voice, which often gives better quality than cellular communication.
• 🔄 Reconfigure. SIM-Map: Some Xiaomi (e.g. Redmi Note 11) are solving the problem with switching the network from the map to the map. 4G on 3G customized SIM-map.

Tip for POCO owners: If you have a model with stereo speakers (like the POCO X3 Pro), try turning on the dual speaker mode in the audio settings. This will redirect the sound to both speakers, increasing the volume.

FAQ: Frequent questions about the volume of conversation on Xiaomi