Why is the sound in headphones on Xiaomi has become quieter – and how to fix it?

You plugged your headphones into a Xiaomi smartphone, but the sound is barely audible, and this is a problem that we see on models from the Redmi Note 12 to the Xiaomi 14 Ultra, regardless of the type of headphones — wired, Bluetooth or Type-C. 80 percent of the time, it's not the system's settings or software failures that are to blame. But how do you tell the "treatable" software from the hardware defect?

In this article, we will analyze all possible causes of volume drop - from banal pollution of the connector to hidden functions. MIUI, That even the most experienced users don't know about:

• 🔍 How to Check if Your Smartphone or Headphones Are Blame (Spoiler: The Test Takes 30 Seconds)
• ⚙️ What settings? MIUI «Eat the volume and how to reset it
• 🛠️ When the problem is solved only in the service center (and how much it costs)

Importantly, if the sound is completely gone, it's another problem (most often oxidation of the contacts or damage to the audio codec), and here we focus on turning down the volume without completely disappearing the sound.

1. Headphone check: Is the smartphone to blame?

Before you dig into Xiaomi's settings, make sure the problem isn't with the headphones themselves. Here are 3 quick tests:

• 🎧 Connect your headphones to another device (laptop, tablet, second phone) If the sound is normal, it's the smartphone's fault. If the sound is quiet, it's the headphone problem (possibly clogged speaker grid or damaged cable).
• 🔊 Check the sound balance: in MIUI Go to Settings. → Sound. → Left/right headphone balance. If the slider is shifted one way, the sound will seem quieter.
• 🔌 Move the plug/cable (for wired models) If the volume changes, it's a wire break or poor contact in the connector.

💡 Tip for Bluetooth headphone owners: try resetting them to factory settings. On most models (like Xiaomi Buds 4 or Redmi AirDots 3), this is done by holding a button on the case charger for 10 seconds.

⚠️ Note: If you use Type-C headphones with a 3.5mm adapter → USB-C, The problem may be the adapter. Cheap models often don't support the full volume range.

2. Settings MIUI, loudspeakers

MIUI It has a few hidden features that automatically turn down the volume, and they're easy to miss unless you know where to look.

2.1 Safe sound mode (Safe Volume)

This feature limits the maximum volume to protect hearing, and it turns on automatically when you first connect your headphones to turn off:

1. Go to Settings. → Sound. → Safe sound.
2. Turn off the slider "Limit the volume of headphones."
3. Confirm the action (the system will ask you to enter) PIN-code).

If you don't have a Safe Sound, it's hidden deeper on your Xiaomi model. → Special facilities → Rumor → Safe sound.

Adaptive sound and equalizer

MIUI It automatically adjusts the sound to the environment, but sometimes it's too aggressive to reset the settings:

• 🎛️ Open the Settings. → Sound. → Sound quality.
• Turn off Adaptive Sound and Equalizer.
• Choose the preset "Default" or "Flat" (Flat).

🔹 For Bluetooth headphones, check the connection codec on the same menu — AAC or aptX (if the headphones support). SBC Often gives worse quality and quieter sound.

Deactivate "Safe sound"|Reset the equalizer to "By default"|Select a codec. AAC/aptX Bluetooth|Check the left/right channel balance-->

3. Software glitches: clean cache and reset settings

If the settings are fine, but the sound is still quiet, the problem could be the system cache or the audio drivers crash.

Clearing the cache of the Sound app

Sometimes cache MIUI «forgets" volume settings. To reset it:

1. Go to Settings → Applications → Application Management.
2. Find the Sound app (or Audio Effects on English-language firmware).

Resetting all sound settings

If cleaning the cache did not help, reset the sound settings to the factory:

1. Select “Reset Sound Settings” (not to be confused with a full phone reset!).

⚠️ After reset, you will have to reset alarm clocks, notifications and volume profiles.

Update to firmware

In some versions MIUI (particularly MIUI 13-14) there were bugs with audio drivers:

1. Settings → About the phone → System update.
2. If an update is available, install it.

📌 Important: Reset the audio settings after the update (P.3.2), as new drivers may conflict with the old settings.

Hardware problems: when the "iron" is to blame

If all the software methods have been tried, but the sound is still quiet, it's the hardware. Let's look at the most common reasons.

Contamination of the 3.5 mm or Type-C connector

Dust, pile, or contact oxidation can degrade the signal.

• 🧹 Use a toothpick with a wool dipped in alcohol (do not overdo it!).
• 💨 Blow the connector with compressed air (a canister for cleaning equipment).
• ⚠️ Do not use metal objects – they can damage your contacts.

🔍 How to check: plug your headphones in, and move the plug a little bit. If you hear a sound, it goes away, and the connector is definitely dirty.

Damage to the audio codec

An audio codec is a chip that processes sound, and when it gets damaged (like when a phone falls or when moisture gets in), it becomes silent or distorted.

• 🔊 The sound is quiet even at maximum volume.
• 🎵 In the speakers of the phone sound normal, but in headphones – no.
• 🔧 The problem does not depend on the type of headphones (wired / wireless).

💰 Cost of repair:

⚠️ Warning: if the phone was in water, don't turn it on! immediately take it to the service - oxidation of contacts can lead to short circuit.

Problems with the Bluetooth module

If the quiet sound is only in Bluetooth headphones, the module itself may be to blame. Wi-Fi/Bluetooth. It's easy to check it out:

• 📱 Connect your headphones to another phone. If the sound is normal, Xiaomi is a problem.
• 🔄 Reset the phone and turn on flight mode for 30 seconds, then turn it off.

🛠️ The repair of Bluetooth module costs 3,000-8000 ₽ In some cases, flashing the module (cost) helps. ~1 500 ₽).

5. Features of specific Xiaomi models

Some Xiaomi smartphones have unique audio problems, and here are the most common ones:

5.1. Xiaomi with Snapdragon processor 8 Gen 1/2

Snapdragon 8 Gen 1 (Xiaomi 12 Pro, Black Shark 5) and Gen 2 (Xiaomi 13, Redmi) K60) They suffer from overheating of the audio codec. When you load (games, video) the sound can automatically mute.

🔥 Decision:

• 🧊 Install the app «CPU Monitor and monitor the temperature of the processor.°C - let the phone cool down.
• ⚙️ Turn off “Performance” in Settings → Battery → Performance mode.

Phones without 3.5 mm connector (Type-C)

On models without a standard audio jack (Xiaomi 11-14, Poco) F4) sound is transmitted through USB-C, Which adds to its nuances:

• 🔌 Use only certified adapters (original from Xiaomi or proven brands like Anker). Cheap adapters limit volume.
• 🔄 Try different Type-C cables – some only support charging, but not audio transmission.

💡 Tip: If you use Type-C headphones, try turning on “Debugging by” USB» In Settings → The phone. → Version. MIUI (7 times press) → Additionally. → For developers → Debugging by USB. Sometimes it solves problems with the recognition of headphones.

5.3 Xiaomi with Harman Kardon speakers

Models with branded acoustics (Xiaomi) 10S, Black Shark 4 has enhanced audio processing that can conflict with headphones to turn it off:

1. Go to Settings → Sound → Sound quality.
2. Turn off Harman Kardon Audio Effects.
3. Reboot the phone.

6. Alternative solutions: if nothing has worked

If all of the above methods fail, try these non-standard methods:

Sound amplification applications

There are programs that programmatically increase volume by changing the frequency response.

• 🎧 ViPER4Android (requires root or magisk).
• 🔊 Equalizer FX (It works without root, but with limitations).
• 📱 Wavelet (optimized for Bluetooth headphones).

⚠️ Warning: increasing the volume above the standard values can damage the headphones or worsen the sound quality (wheezing will appear).

6.2 Resetting the phone to factory settings

The last resort, a full reset, is worth using if:

• 🔄 The problem arose after the update. MIUI.
• 📱 The phone started to slow or glitch in addition to problems with sound.
• 🔊 None of the methods helped.

📌 How to drop:

1. Make a backup of the data (Settings → About Phone → Backup).
2. Go to Settings. → System and device → Additionally. → Resetting settings → Erase all data.
3. Confirm the action.

🔹 After reset, don't restore settings from backup - this could return the problem.Configure the phone as new.

Contact the service centre

If you've exhausted all options, you'll have to pay for or warranty repairs.

• 📋 For warranty repairs, you need a check document and an intact seal on your phone.
• 🔧 If the phone is warranty, but there are traces of an autopsy - repair will be refused.
• 💰 The average cost of diagnosis in the service is 500-1000 ₽.

📍 Official Xiaomi service centers in Russia can be found on the website: mi.com/ru/service.

💡

If the phone is warranty, try resetting the settings first (Paragraphs 3.2 and 6.2). Service centers often refuse to repair devices with non-standard firmware or root rights.

FAQ: Frequent questions about quiet sound in Xiaomi headphones