How to increase the volume on the Xiaomi smartphone: from standard settings to hidden features

Have you ever encountered a situation where at maximum volume Xiaomi still can't hear a conversationalist in the handset or music sounds like a bucket? This is a common problem, especially on budget models like Redmi Note or POCO, where the manufacturer saves on speakers, but the good news is that you can increase the volume software — without replacing the hardware.

In this article, we will look at all the working methods, from basic MIUI settings to hidden menu options and third-party utilities. It is important to understand that not all methods are equally safe: some can cause sound distortion or even damage to speakers during prolonged use, so we will separately note the risky options and give recommendations on how to apply them without harming the device.

If you own a flagship like the Xiaomi 13 Ultra or the Mix Fold 3, you probably don't have a sound problem, because there are good stereo speakers, but for the Redmi 9A, POCO M3 or older models like the Mi A2, we'll be especially helpful. Let's start with the simplest and move on to advanced techniques.

1. Basic volume settings in MIUI

Before digging deep into system files, check the obvious. There are several places in MIUI where you can adjust the volume separately for different scenarios. Many users don't even realize that the volume of the call, the media and the alarm clock are set independently.

Open the Quick Settings Panel (swipe down from the top edge of the screen) and find the volume slider. Click on the gear icon next to it, and a menu with separate regulators will open for:

• 🔔 Calls and notifications – affect the volume of incoming calls and SMS
• 🎵 Multimedia - music, video, games
• ⏰ Alarm clock – a separate setting, often ignored
• 📞 Loud communication – for conversations through the speaker

If the sound is quiet at maximum, try to turn on the option to Amplify the sound in your headphones (available on some models). Find it in Settings → Sound and vibration → Sound quality. This feature adds software amplification, but can slightly distort the low frequencies.

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In the models with IR-Check with a blaster (like the Redmi Note 11) to see if the Mi Remote app blocks the sound, sometimes it conflicts with the audio drivers.

2. Enable the "Loud Communication 2.0" mode (hidden MIUI function)

MIUI 12-14 firmware has an undocumented ability to activate an improved hands-free mode that increases microphone volume and speaker during a conversation, a technique that is especially useful if you are not hearing well.

To include it:

1. Open the phone app and dial the combination: ##36446337###
2. The CIT (Factory Test Mode) menu will open. Select Audio → Loud Speaker Mode.
3. In the Type field, select Sph2 (this is "Speak 2.0").
4. Press Set and restart the phone.

Once activated, check the volume during the call - the difference should be noticeable.This method only works on devices with Qualcomm Snapdragon processors (for example, POCO X3 Pro, Redmi K40) and may not be supported on MediaTek.

3. Sound tuning via engineering menu (MTK and Snapdragon)

The engineering menu is a hidden part of Android where you can fine-tune the sound settings, including amplifying the signal on the speakers. Careful: the wrong changes here can lead to distortion of the sound or even damage to the speakers.

Instructions for MediaTek (Redmi 10, POCO M4 Pro, etc.):

1. Please enter the phone app ##3646633##
2. Go to Hardware Testing → Audio.
3. In the LoudSpeaker Mode section, find the parameters: Max Vol - maximum volume (increase gradually, no more than +6 dB) Gain - signal amplification (optimally +2 - +3 dB)

Save the settings and restart the phone.

For Snapdragon (Xiaomi 12T, Redmi Note 11 Pro+):

1. Dial: ##4636##
2. Select Information → Audio.
3. In Speaker, change Volume to 140-150 (default 100).

To diagnose hardware problems:

1. Connect headphones – if the sound in them is normal, the problem is in the dynamics.
2. Call your phone from another device – if the person hears you poorly, the microphone is faulty.
3. Write down a voice memo – if the recording is quiet, the problem is with the audio chip.

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On Xiaomi models with stereo speakers (e.g. Mi 11, Redmi K50) check both speakers separately. Often only the lower one fails (it is responsible for low frequencies).

7. Frequent mistakes and how to avoid them

Many users are exacerbating the problems with sound, and the myths that are common are being followed by some of the most dangerous ones:

⚠️ Warning: Never use apps like Speaker Cleaner that promise to "clear speakers with sound waves." These programs generate ultrasound that can damage the speaker membrane, especially on Xiaomi's budget models with thin diffusers.

Other common mistakes:

• 🚫 Resetting the audio settings via ##7378423## – this code only works on Sony and will reset all Xiaomi settings to factory, but will not increase the volume.
• 🚫 Installation of "firmware for sound" - scammers often distribute malware under the guise of "audio mods." Download files only from official Xiaomi forums (for example, xiaomi.eu).
• 🚫 Using Bluetooth amplifiers – they add latency (latency), which is critical for gaming and video.

If after experimenting with sound, the phone stopped turning on or got stuck on the MI logo, try:

1. Click Power + Volume Up to log in to Recovery Mode.
2. Select Wipe Cache Partition (not to be confused with Wipe Data!).
3. Reboot with Reboot System Now.

FAQ: Answers to Frequent Questions