How to check the speaker on your Xiaomi phone: from tests to repair

The speaker in Xiaomi smartphones is one of the most vulnerable elements: it is prone to clogging, mechanical damage and software failures. If the interlocutor complains that he does not hear you during the call, or the sound has become quiet / distorted, the problem most often lies in the upper (conversational) dynamics. Unlike multimedia, which plays music and video, the conversational one is responsible for transmitting voice during calls - and its malfunction makes the phone almost useless for calls.

In this article, we will discuss 5 reliable ways to check the speaker on any Xiaomi models - from the budget Redmi to the flagship Mi and POCO. You will learn how to diagnose a problem without special tools, what errors the system gives when hardware failures, and when to contact the service. And if the speaker works, but the sound leaves much to be desired, we will show you how to improve its quality software.

1. Quick check through call or voice recording

The easiest way to detect a malfunction is to test the speaker in real-world conditions, and it doesn't require any applications or settings: just make a call or use a voice recorder.

Method 1: Test call

• 📞 Call another phone (such as a landline) and ask the person to rate the sound quality. If the voice is heard quietly, with interference or interrupted, the speaker is faulty.
• 🔊 Turn on speaker while you're talking, and if the sound is clear through the main speaker and not through the speaker, that's the problem.
• 🎧 Put your headphones on and you call again, and if the headphones sound normal and you don't, it's the speaker or his contacts who's at fault.

Method 2: Voice recording

Record your voice through the standard Dictaphone app (or any other app, such as Voice Recorder), then listen to the recording.

• 🔇 Silent sound – may indicate clogging of the speaker or membrane damage.
• 🔊 Wheezing/interference – often caused by moisture or mechanical wear.
• 🎵 Distortion (e.g. voice sounds like “from a barrel”) – a sign of damage to the magnetic system of the speaker.

⚠️ Warning: If the sound is normal when recording through the microphone, but not during the call, the problem may lie not in the speaker, but in the communication module or antenna.

MIUI Test Mode: Hidden Codes for Diagnostics

Xiaomi’s MIUI-based smartphones have a hidden test mode that allows you to check all hardware components, including speakers, which is more accurate than a call, as it tests the speaker at different frequencies and volume levels.

To run the test:

1. Open the Phone app.
2. Enter the combination: ##4636### (for newer versions of MIUI) or ##6484## (for older models).
3. Select Hardware Testing (or Hardware Testing).
4. Find the Audio section or the Sound → Speaker Test (Dynamics Test).
5. Follow the instructions on the screen: the system will play sounds through a conversational speaker.

If the test doesn’t start, try alternative codes:

• 📱 ##36446337## — Advanced diagnostics (works on Redmi Note) 8/9 newer).
• 🔧 ##284## — microphone test and speaker (for the purpose of POCO mi 10/11).

⚠️ Note: Some models (e.g. Xiaomi) 12T or Redmi K50) The test mode may be blocked, in which case use third-party applications (see next section).

If in test mode the speaker does not reproduce sound at all, but the multimedia speaker works - it is 100% hardware fault (contact break or failure of the speaker).

Turn off Bluetooth and headphones |

Close all background applications |

Make sure the volume of calls is at maximum |

Repeat the test 2-3 time-in-time-->

3. Applications for checking speakers: top-3 utility

If standard codes don't work or you want more detailed diagnostics, use specialized applications that allow you to test speakers at different frequencies, check the balance of stereo sounding and detect distortions.

The best apps for Xiaomi:

How to use:

1. Install one of the applications and open it.
2. Select the Speaker Test (or similar) section.
3. Follow the instructions on the screen. You usually need to confirm if you hear the sound.
4. Pay attention to the frequency chart (if any): dips at certain frequencies indicate damage to the speaker.

💡

If the app shows that the speaker is working, but the sound is still bad, check the settings for voice amplification in Settings → Sound → Sound Improvement. Sometimes this feature distorts the sound.

Physical examination: what can be done on your own

If software tests show no problems, but the sound still leaves much to be desired, examine the speaker visually, often due to contamination or mechanical damage.

What to check:

• 🔍 Grid speaker: Look at the holes on the top of the phone (near the front camera). If they are clogged with dust or dirt, the sound will be muffled.
• 💧 Moisture traces: Spots or corrosion around the speaker indicate that fluid has been ingested.
• 🔧 Speaker attachment: If the phone fell, the speaker could move away from the board. With a light tap on the area around it, the sound may temporarily improve - this is a sign of poor contact.

How to clean the speaker:

1. Turn off the phone.
2. Take a soft toothbrush (new!) or makeup brush.
3. Carefully run the speaker over the grid to remove the dust. Don't press hard!
4. To remove moisture, use silica gel bags (put your phone in a sealed bag with them for 12-24 hours).

⚠️ Warning: Never use compressed air (cylinders) to clean the speaker - this can damage the membrane. Also avoid cotton swabs: villi can get stuck inside.

5. Check through the Engineering Menu (for advanced)

The Engineering Mode provides advanced diagnostic tools, including sound circuit tests, which are suitable for users who are willing to work with technical parameters.

How to open the engineering menu on Xiaomi:

1. Enter the phone app code ##36446337## (or #4636## on older models).
2. Go to the Hardware Testing → Audio section.
3. Select LoudSpeaker Mode (or Receiver Mode for Speaker).
4. Run the Loopback Test, which will check the circuit from microphone to speaker.

What to look out for:

• 📊 Signal Level: If it is below -40 dB, the speaker is inefficient.
• 🔌 Chain resistance: The value OL (or 0 ohms (short circuit) indicates a malfunction.
• 🔊 Chart distortion: Peaks or dips at certain frequencies indicate damage.

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If the engineer menu doesn't define the speaker at all (no response to the tests), the problem may be in the audio codec (the sound chip), in which case the motherboard needs repair.

6.When to contact the service: signs of serious breakdowns

Not all speaker problems can be solved by yourself, and if you don't get sound back after all the tests, you'll probably need professional repairs, and here are 5 signs that you should bring your phone to service:

• 🔇 Complete lack of sound when calling (even in headphones everything works).
• 🔊 Constant wheezing/cracking that is not cleaned.
• 📱 Phone overheats during conversations (may indicate a short circuit in the speaker circuit).
• 🔌 The speaker is working, but very quiet, even at maximum volume.
• 💥 Phone falls or comes into contact with water before the problem occurs.

Cost of repair:

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Before visiting the service, make a backup of the data! When repairing the audio track, sometimes you need to flash it back, which can erase user files.

7. Prevention: how to prolong the life dynamics

To make the speaker on Xiaomi last longer, follow the simple recommendations:

• 🚫 Avoid moisture: Don't use your phone in the rain or in the bathroom. If it gets wet, turn it off and dry it right away.
• 🧹 Clean regularly: Once a month, remove dust from the speaker mesh with a soft brush.
• 📵 Don't drop your phone: Blows often lead to the speaker's contacts being separated from the board.
• 🔊 Don't turn on maximum volume: Constant load reduces membrane life.
• 🔋 Watch out for battery: Bloated battery can press on motherboard and damage audio track.

Useful MIUI settings to protect the speaker:

1. Open Settings → Sound → Improvement of Sound.
2. Turn off voice amplification - it loads the speaker.
3. Turn on Adaptive Sound (if any) – this will reduce the risk of distortion.

Frequently asked questions