How to Clean Upper Speaker on Xiaomi Phone: 5 Safe Ways

Why is the top speaker clogged on Xiaomi and how it manifests itself

The top speaker (conversational) in Xiaomi, Redmi and POCO smartphones is one of the most vulnerable places to pollution. Dust, sweat, cosmetics, and sometimes random spray of liquid gradually clogs the microscopic holes in the protective grille, resulting in muted sound, wheezing or distortion during conversation, especially when owners of models with an open speaker grille (for example, Xiaomi 12T, Redmi Note 11 Pro+ or POCO F4 GT).

The first signs of clogging are not immediately apparent. First, you may notice that the person is not hearing well in a noisy room, then the sound becomes quieter even in a quiet environment, and at maximum volume, the characteristic "bubbling" appears. In advanced cases, the speaker may stop transmitting sound altogether - this is an excuse to visit the service center, but in 80% of cases, the problem can be solved independently without disassembling the phone.

What is dangerous is the improper cleaning of dynamics

Before you grab a toothpick or a cotton swab, you need to understand what errors are most likely to cause a speaker to break or deteriorate. The main problem is mechanical damage to the membrane. It's thinner than a human hair, and even a slight push by a sharp object can tear it. Another risk is moisture getting inside the case. If you use liquid cleaners (like alcohol), they can leak under the bars and oxidize the contacts.

Typical errors in cleaning:

• 🔪 Using metal objects (needle, knife, paper clips) - scratches the grille and tears the membrane.
• 💧 Direct spraying of air under high pressure (compressor, canister) - can squeeze out the membrane or tear it from the fasteners.
• 🧴 Application of liquids (alcohol, water, WD-40) directly on the speaker - leads to corrosion.
• 🔥 Heating the phone (dryer, battery) – deforms plastic parts and adhesive bases.

⚠️ Warning: If the speaker starts beeping or stops working completely after cleaning, turn off the phone immediately.This is a sign of short circuit - further use may disable the audio chip.

Method 1: Soft brush dry cleaning (the safest method)

This method is suitable for regular prevention and removal of surface dust, you will need a soft brush with natural pile (for example, for makeup or watercolors) or a special brush for cleaning electronics, the main rule is that the movements should be light and directed along the grille, not across.

Step-by-step:

1. Turn off your phone to avoid static discharge.
2. Carefully sweep the speaker 5-7 times in one direction with a brush on the grille.
3. To remove dust from the recesses, slightly tilt the phone and tap on the body (not on speaker!).
4. Repeat the procedure by changing the direction of movement.

Soft brush with long pile

Loop (optional, to monitor the outcome)

Lantern (to illuminate the grille)

Antistatic bracelet (for protection against discharges)-->

This method removes up to 70% of surface contaminants, but is useless against dried dirt or liquids. If the sound does not improve after cleaning, move to deeper methods.

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For the best effect, use a brush with an antistatic coating - it not only cleanses, but also prevents the settling of new dust on the grille.

Method 2: Compressed air cleaning (for deep contaminants)

If the dust has penetrated deep under the grille, compressed air from the can (sold in electronics stores) will help. It is important to use it correctly so as not to damage the membrane. The pressure should be minimal - enough short pulses (0.5-1 seconds) from a distance of 3-5 cm.

Algorithm of action:

• 📱 Keep your phone down speaker so that dirt flies out under gravity.
• 💨 Direct the jet at an angle of 45.° to the lattice, not perpendicularly.
• 🔄 Repeat the procedure 2-3 times with breaks of 10 seconds (so as not to overcool the speaker).
• 🧹 After cleaning, remove the departed dirt with a brush.

⚠️ Warning: Never use a home vacuum cleaner to clean the speaker! even at minimal power, it creates too much traction that can tear the membrane from the mounts.

Dry brush

Compressed air

Cotton swab

Nothing cleaned.

Another way.-->

Method 3: Removing sticky dirt with tape or sticky tape

If you have cosmetic particles, potassium fat deposits or other sticky dirt in the speaker's grille, paint tape or a special sticky tape to clean the screens will help, and the method is based on adhesion: the adhesive surface pulls out the contamination from the microholes.

How to do it right:

1. Cut a small piece of scotch (5×5 mm) and bend it with a corner.
2. Carefully press the sticky side to the speaker grille without pressing.
3. After 2-3 seconds, slowly pull the scotch parallel to the surface.
4. Repeat 3-4 times, using a new piece each time.

This method is effective in removing:

• 💄 Particles of tonal cream or powder
• 🍔 Fat marks from food
• 🌫️ Dust mixed with sweat

Method 4: Ultrasound cleaning (for advanced users)

An ultrasonic bath is one of the most effective ways to clean the speaker, but it requires a complete disassembly of the phone. If you don't have experience in electronics repair, you'd better leave it to a service center. However, for models with a removable back cover (such as the Redmi 9A or POCO M3), the process is simplified.

What you need:

• 🔧 Plastic mediator for opening the body
• 🔊 Ultrasonic bath (can be bought for 1500-3000) ₽)
• 💧 Distilled water or alcohol (90%+)
• 🧴 Silicone lubricant (to protect rubber seals)

Step-by-step process:

1. Carefully remove the back cover of the phone (heating it with a hair dryer 60-70°C to soften the glue).
2. Disconnect the speaker plume from the motherboard.
3. Place the speaker in an ultrasonic bath with distilled water for 30 to 60 seconds at 40°C.
4. Remove the part, dry it with a hair dryer (cold air!) for 10 minutes.
5. Apply a thin layer of silicone lubricant to the sealer and assemble the phone.

⚠️ Warning: After ultrasonic cleaning, be sure to check the resistance of the speaker with a multimeter (should be within 6-32 Ohms for most Xiaomi models).If readings go beyond this range, the speaker is damaged and requires replacement.

Method 5: Software Diagnostics Before Cleaning

Before you start physical cleaning, make sure that the problem is the clog, not the software failure or damage to the audio track.

How to check the speaker on Xiaomi:

1. Dial the dialer code ##4636##.
2. Select the Audio Information item → Audio test.
3. Test Speaker (upper) – if the sound is distorted or missing, the problem is hardware.

Alternative applications for diagnosis:

• 📱 Phone Doctor Plus – Checks all speakers and microphones.
• 🔊 Speaker Clean – plays test frequencies to detect wheezing.
• 🎛️ Audio Test – analyzes the frequency range of the speaker.

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If the test shows that the speaker is working normally but the sound is still bad, the problem may be in the microphone grid (it is often confused with the speaker) or in the sound settings (for example, voice amplification mode is turned on).

Prevention: how to protect the speaker from pollution

The best way to avoid problems with the speaker is to prevent it from clogging. Here are some practical tips:

• 📱 Use a speaker-protected case (e.g. Spigen or Ringke models with raised edges).
• 🚿 Avoid talking on the phone in the shower or in the rain – moisture quickly oxidizes contacts.
• 🍔 Do not put your phone down on the table, especially when eating.
• 🧴 Regularly wipe the case with a dry microfibre wipe (1 time per week).

For models with an open speaker grille (for example, Xiaomi 13 Ultra or Redmi K60 Pro), you can use a protective film with a cutout under the speaker. It does not degrade sound, but it traps up to 90% of dust.

If you are often in dusty spaces (construction sites, workshops), consider an option with a thin silicone speaker overlay. It is sold on AliExpress and costs about 100-200. ₽.

FAQ: Frequent questions about cleaning up Xiaomi speaker