How to check the speakers on your Xiaomi phone: from basic diagnostics to deep test

The speakers in Xiaomi smartphones are one of the most vulnerable components after the battery. Sound problems can manifest themselves in many ways, from barely audible crack to a complete lack of bass. The causes of malfunctions range from software failures to physical membrane damage. In 80% of cases, users mistaken hardware defects for software bugs, spending time on flashing instead of simply cleaning the connectors.

This article will help you accurately diagnose the state of the speakers on your Redmi, POCO We'll look at the test methods from the elementary (via embedded tools) to the professional (using test frequencies). MIUI, which allow you to test each speaker separately – a feature not available in the standard menu.

1. Quick check through built-in MIUI tools

To start with, Xiaomi has a hidden diagnostics section that allows you to test the basic components, including speakers, which does not require installing third-party applications and works on all models from the Redmi Note 7 to the Xiaomi 14 Ultra.

To open the test menu:

1. Open the Phone app.
2. Enter the combination: ##4636###.
3. In the menu that appears, select Testing (or Testing on Russian firmware).
4. Go to Audio → Loud Speaker (top speaker) and Ear Speaker (bottom speaker).

The system will automatically play back the test signals, and if the sound is intermittent or non-existent, it's a hardware problem. If there's sound but it's distorted, try dusting the speakers (more on this in Section 4).

2. Checking through the Engineering Menu (MTK/Qualcomm)

The engineering menu is a powerful tool for deep diagnostics, but it requires caution. Incorrect settings can cause system failure. Depending on the processor of your Xiaomi (MediaTek or Snapdragon), the commands for entry will vary.

For MediaTek (Redmi 9A, POCO M3, etc.):

##36446337##

For Qualcomm (most flagships Xiaomi, Redmi K50 and newer):

##4636##

On the engineering menu:

• 🔊 Go to Hardware Testing → Audio.
• 📊 Select Speaker Test and check both speakers separately.
• 🔧 Notice the Impedance parameter. Normal: 32-64 Ohms. If it's below 20 Ohms, the speaker is damaged.
• 🎛️ In the Volume section, check if the factory volume settings have gone down (sometimes reset after updates).

⚠️ Note: Do not change the parameters in the sections RF Band or Network – This can disrupt mobile network.

3. Testing with third-party applications

If the built-in tools don't give you the full picture, use specialized applications that allow you to check the speakers at different frequencies, detecting defects that are invisible in a standard test.

Top.-3 apps:

How to run the test:

1. Install the application and open it.
2. Select Speaker Test mode (or similar).
3. Check it out: 🔈 Top speaker (multimedia) 📞 Lower speaker (conversational) 🎧 3.5 mm connector (if available) 🔊 Bluetooth headphones (to check the transmission module)

Compare the sound with the reference (you can use a second phone for comparison).

4. Physical Diagnosis: What You Can Do on Your Own

If the software tests show problems, but the sound is still there, even if it's distorted, it could be a contamination or mechanical damage to the speakers.

Cleaning of speakers:

• 🧹 Use a soft brush (such as a toothbrush) to remove dust from the grille. Movements should be gently, without pressing.
• 💨 Compressed air (a balloon) will help blow out dust from hard-to-reach places. Keep the balloon vertically to avoid liquid intrusion.
• 🧲 For magnetic dust (found in industrial areas), use an antistatic wipe.

Mechanical damage check:

• 🔍 Look at the speaker grille for dents or cracks, even a small damage can distort the sound.
• 💧 If the phone falls into the water, check the moisture indicators (small white stickers under the lid). SIM-If they are red, professional drying is required.
• 🔊 Knock your finger next to the speaker. A deaf sound may indicate that the membrane is detached.

⚠️ Warning: Do not use cotton swabs or toothpicks to clean, they can damage the speaker membrane. Also avoid industrial vacuum cleaners: their power can break the grille.

5.Mic and vibration check: related issues

Often, problems with sound are accompanied by malfunctions of the microphone or vibration module, which may indicate damage to the audio chip or plume.

Microphone test:

• 🎤 Open the Dictaphone app and record 10-15 seconds of speech.
• 🔊 Play the tape. Listen to it: 🔇 Extraneous noise (cracking, hissing) 🎵 Distortions of voice (robotization, echoes) 🔊 Uneven volume (silent, then louder)
• 📞 Call another phone and check how you can be heard in the phone.

Vibration test:

• 📳 Go to Settings. → Sound. → Vibration.
• 🔄 Turn on Vibration mode when dialing and try dialing a message.
• 🎮 Start a game with tactile recoil (for example, PUBG Mobile).

If the microphone or vibration doesn’t work with the speakers, the problem may be:

• 🔌 Schleife (a common problem after falls).
• 🔧 Audiochipe (requires soldering).
• 🔋 Battery contacts (sometimes oxidation leads to the audio module shutdown).

💡

If the microphone only works in the headset, but not through the main speaker, check the settings in Settings → Apps → Permissions → Microphone. Some applications (such as messengers) can block access to the main microphone.

Verification for program failures: reset and calibration

If hardware tests didn't show any problems, but the sound is still distorted, it could be a software failure. MIUI There are several ways to return factory sound settings.

Resetting of sound settings:

1. Go to Settings → System → Resetting settings.
2. Select Resetting Sound Settings (not to be confused with a full reset!).
3. Confirm the action and restart the phone.

Calibration of speakers (hidden function):

This method works on models with MIUI 12 and later:

1. Turn on Developer Mode (7 times click on the MIUI version in Settings → About Phone).
2. Back to Settings → Additionally. → For developers.
3. Activate USB Debugging and OEM Unlocking.
4. Connect your phone to your PC and type in ADB: adb shell am start -n com.android.settings/.DevelopmentSettings
5. In the menu that opens, find Audio Tuning and calibrate.

If the sound has not recovered after these manipulations, there are two options:

• 🔄 Firmware rollback (if the problem has appeared after the update).
• 🛠️ Replacement of the speaker in the service center.

💡

Before resetting your audio settings, check if your phone has custom audio profiles (e.g., via Equalizer) that can distort the sound artificially.

7.When to contact the service: signs of serious malfunctions

Not all problems can be solved on your own. Here are 5 signs that your Xiaomi needs a professional repair:

• 🔇 Complete lack of sound in all modes (even in headphones).
• 🔥 Smell of smoke from the speaker after prolonged use.
• 💧 Corrosion on the contacts (visible when opening the body).
• 🔊 Spontaneous music switching on (symptom of audio chip damage).
• 📉 Volume drop over time (may indicate membrane wear).

The cost of repairing speakers in Xiaomi:

Before the service visit:

• 📋 Make a backup of data (reset may be required during repairs).
• 🔍 Check whether the workshop uses original spare parts (Xiaomi often put non-original speakers with the worst sound).
• 💰 Compare prices in 2-3 services (the range can reach 30-40%).

FAQ: Frequent questions about Xiaomi speakers