How to increase the volume while talking on Xiaomi Redmi smartphones: all working ways

Weak sound during calls on Xiaomi Redmi is a common problem that interferes with comfortable communication. Even at maximum volume, the voice of the interlocutor can sound quiet, especially in noisy places or when using budget models of the Redmi Note, Redmi A or POCO series. The reasons lie in both hardware limitations (weak speaker, poor noise insulation) and in the software settings of MIUI, which by default limit the volume to protect hearing.

In this article, we will look at 7 proven ways to increase volume during a conversation, from standard settings to hidden engineering menu features and third-party utilities. Importantly, not all methods are equally safe. For example, changing the parameters through the MTK Engineering Mode can cause sound distortion or overheating of the speaker if you exceed the recommended values. We will specify the risks and give clear instructions so that you can choose the best option for your Redmi model.

1. Checking basic volume settings

Before you resort to radical measures, make sure that the problem is not in the trivial settings. On Xiaomi Redmi, the volume of the conversation is adjusted separately from the media sound and alarm clock.

• 🔊 Volume buttons: Press the top or bottom volume buttons during the call, and a scale labeled "Loudness of Call" should appear on the screen. Make sure the slider is at maximum.
• 📞 In-Tube Mode: If you use a headset or Bluetooth headphones, the volume can drop. Turn them off and check the sound through the main speaker.
• 🔕 Silent Mode: Swipe down the notification bar and make sure no sound or vibration is activated.
• 🔄 Resetting sound settings: go to Settings → Sound and vibration → Resetting sound settings (not available on all versions) MIUI).

If the sound remains quiet after these manipulations, the problem lies deeper. On some Redmi models (for example, Redmi 9A or Redmi Note 10) in MIUI 12/13 there is a hidden volume limit to comply with European standards EN 50332-2.

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

The engineering menu is a hidden settings section where you can manually increase the microphone volume and speaker. The method works on most Redmi, but the menu interface differs depending on the processor: MediaTek (MTK) or Qualcomm Snapdragon.

⚠️ Warning: Incorrect settings in the engineering menu can cause sound distortion or damage to the speaker. Do not increase the values by more than 10-15 units from the standard ones unless you are sure of the consequences.

For smartphones on MediaTek (Redmi 9A, 8A, 7A, etc.):

1. Open the Phone app and enter the combination: ##36446337###
2. Select Hardware Testing → Audio → Normal Mode.
3. Find the parameters: Sph (Microphone) - microphone volume (increase to 230-250), Sph2 (Receiver) - speaker volume (increase to 160-180), Sid (Earpiece) - speaker volume (maximum 150).

Set

For smartphones on Qualcomm (Redmi Note 10, POCO X3, etc.):

1. Enter the dialer: ##4636###
2. Go to Information → Audio → Volume.
3. Change the settings for: Voice Call (max. 140-160) VoIP Call (if you use instant messengers).

If the engineering menu doesn't open, your MIUI firmware may have blocked access, in which case try alternative methods or install a special application.

Record the current parameters |Do not exceed the recommended limits |Reboot the phone after changes |Check the sound at different volume levels-->

3. Customization through applications to amplify sound

If the engineering menu is not available or its settings do not work, use third-party utilities. They work on top of the system and amplify the sound software.

The easiest option is the Volume Booster.

1. Open the app and select Call Volume.
2. Move the slider 120-130 percent (not higher!).
3. Activate the Apply on Boot option to save the settings after the reboot.

⚠️ Attention: Apps like ViPER4Android They require root rights or modified firmware, and if you install them on Redmi without experience, they can lead to loss of warranty or instability.

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Before installing any audio amplification app, check user reviews of your Redmi model. Some utilities conflict with MIUI and cause freezes.

4. Connector cleaning and dynamics

Often, quiet sound is caused by a simple pollution, and dust, fibers, or moisture can block the speaker or microphone, impairing communication quality.

• 🧹 Speaker: Use a soft brush (for example, for makeup) or compressed air (a balloon!
• 🔌 3.5mm connector (if any): Blow the hole or gently clean with a cotton swab soaked in alcohol.
• 📱 Microphone: Usually located at the bottom of the case. wipe it with a dry napkin.
• 💧 Moisture: If your phone is wet, put it in rice for 12 to 24 hours!

If the sound hasn't improved after cleaning, check the speaker for physical damage. For example, on the Redmi Note 8 Pro, a common problem is that the speaker's membrane has detached due to falls, in which case a replacement will be required at the service center.

🔍 How to check the performance of the speaker:

1. Enter the dialer: ##0673## or ##0289####
2. Select Audio Test → Receiver (Speak Speaker).
3. If the sound is distorted or missing, the speaker is faulty.

5. Update firmware and reset settings

Sometimes a quiet sound during calls is a firmware bug. Xiaomi regularly releases updates to fix such problems. MIUI:

1. Go to Settings → About the phone → System update.
2. Click Check Updates and install the latest version.
3. If the update doesn't work, try resetting the sound settings: Open Settings → Sound and Vibration. Slip on the three dots in the upper right corner and select Settings Reset.

If the problem has occurred after the update, the new version of MIUI may have an error.

• Check out the reviews on the forums (such as 4PDA or MIUI SU) for your model.
• A rollback to the previous firmware version is possible, but requires unlocking the bootloader and TWRP.

6. Alternative solutions: headset, Bluetooth, VoIP

If none of these methods helped, consider the workarounds:

• 🎧 Wired headset: Even budget headphones with a microphone (like Xiaomi Basic) will provide better sound than the built-in speaker.
• 🔵 Bluetooth headphones: Models with cVc 8.0 support (e.g. Redmi Buds 4) suppress noise and amplify voice.
• 📞 VoIP calls: Use WhatsApp, Telegram or Google Meet – they allow you to adjust the volume regardless of system settings.
• 🔄 Speaker: During a call, tap the speaker icon to switch to an external speaker (louder, but less confidential).

For owners of Redmi with Android 12+, there is another life hack: activate the voice amplification function in the special features settings:

1. Go to Settings → Special Options → Sound amplification.
2. Turn on the voice amplification option during calls.
3. Adjust the slider to a comfortable level.

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If hardware isn’t working and sound is critical (for work, for example), consider buying an external Bluetooth noise-canceling headset, which is more reliable than software solutions.

7. When to contact the service center

If you have tried all the methods, but the sound remains quiet during the calls, the problem may be hardware.

• 🔊 The speaker emits wheezing or cracking even at minimum volume.
• 📵 The sound disappears completely or becomes very quiet after a fall/blow.
• 💧 The phone was exposed to moisture (even if time passed).
• 🔧 Self-disassembly or repairs were previously unskilled.

The cost of replacing the speaker with Xiaomi Redmi in official services is 800-2000 rubles (depending on the model). For example, for Redmi Note 11 the price is about 1200 rubles, and for Redmi 9A - 800 rubles. Warranty repair (if the phone is warranty) will cost free, but only if the problem is not caused by mechanical damage.

⚠️ Warning: Make a backup before visiting the service. In some cases, a factory reset may be required for diagnosis.

FAQ: Frequent questions about volume increase on Xiaomi Redmi