How to safely clean the hearing speaker on Xiaomi Redmi Note 8: from toothpick to ultrasound

The Xiaomi Redmi Note 8 is one of the most popular smartphones in the budget segment, but its auditory speaker is eventually clogged with dust, villi and skin particles. This leads to distortion of sound, volume reduction or complete disappearance of sound during calls. Unlike multimedia speakers, the earpiece is located at the top of the screen and requires a special approach to cleaning.

In this article, 5 proven ways to clean the Redmi Note 8 speaker at home, including mechanical, chemical and ultrasonic methods, we will analyze which tools are safe and which can damage the mesh or membrane, and give recommendations for prevention. The peculiarity of this model is a narrow slit speaker (only 0.3 mm), so standard methods like compressed air are often ineffective here.

Why the speaker is clogged on the Redmi Note 8: 3 main reasons

The design of the auditory speaker in the Redmi Note 8 is prone to rapid contamination.

• 🌪️ Unlike Xiaomi’s flagship models, there is no additional barrier to dust – particles penetrate directly into the magnetic system.
• 📱 Located next to the front camera, and when you talk, the flow of air from the user's mouth speeds up the flow of moisture and microbes into the speaker.
• 🔄 Frequent temperature changes: condensate from temperature changes (for example, when the phone is brought from the cold into the heat) settles on the grid and glues the dust together.

According to service centers, 70 percent of all quiet speaker calls on the Redmi Note 8 are solved by simple cleaning, without changing the part, but if the sound becomes hoarse or intermittent, it may indicate membrane damage, and you will need professional repairs.

Preparation for cleaning: what you need and what mistakes to avoid

Before you start, prepare the tools and the workplace.

Connect your phone to charge (so that it doesn’t run out during the procedure)

Use a bright light source (preferably a magnifier with backlight)

Turn off the sound on the phone (Settings → Sound → No sound)

Put soft fabric under the phone (in case of a fall)

Have on hand alcohol wipes for disinfection-->

Now, what you can't do:

⚠️ Attention! Never use metal objects (needles, pins, knives) - they scratch the anti-reflective coating of the screen and can puncture the speaker membrane. Also avoid wet wipes with aggressive solvents (acetone, gasoline), which corrode the adhesive base of the mesh.

If you've tried to clean the speaker with compressed air before, but the result was temporary -- the jet only blows out surface dust, without reaching the deep layers. For the Redmi Note 8, this method is ineffective because of the narrow slit.

Method 1: Cleaning with a toothpick or plastic card (mechanical method)

This is the most affordable and safest way if the pollution is shallow.

• 🪥 Wood toothpick (not sharp!) or plastic card (such as discount card)
• 🔦 Lupa with backlight (optional, but very helpful)
• 🧴 Alcohol wipes (70% isopropyl alcohol)

Step-by-step:

1. Wipe the speaker area with an alcohol wipe to remove fat from the screen.
2. Carefully swipe the toothpick along the slit speaker, slightly pressing. Movements should be parallel to the grid, not perpendicular!
3. To remove the adhering dirt, use a dry cotton cotton pad soaked in alcohol (squeeze the excess liquid!).
4. Repeat the procedure 2-3 times, each time checking the sound with a test call.

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If the toothpick doesn't go through the gap, wrap the tip in a soft cloth (like a microfiber) and moisten it in alcohol, which will help to pull out the dirt through the capillary effect.

This method removes up to 80% of contaminants with regular use (every 2-3 months), and if the sound remains muffled after cleaning, the problem may be in the software settings (more on this in the next section).

Method 2: Use of sticky tape or scotch (for fine dust)

This is a good method if the speaker is packed with villi, skin particles or pollen -- small particles that can't be compressed.

• 📦 Scotch wide. 1-1.5 cm (preferably paint or stationery)
• 🧊 Refrigerator (optional) to enhance the effect)

How to clean:

1. Cut off a piece of Scotch 5-7cm long.
2. Apply it with a sticky side to the speaker and smoothly pull to the side (don't tear it off sharply!). Repeat 3-4 times.
3. For better results, cool the scotch in the refrigerator for 10-15 minutes - it will become stickier.

This method is not suitable for removing hardened dirt or moisture, and if after 5-6 attempts there is no trace of dirt on the tape, then move to more radical methods.

Method 3: Ultrasonic cleaning (for deep contaminants)

If mechanical methods don't work and the sound is distorted, it's time to use an ultrasonic bath, which removes even microscopic particles, but it takes care.

What you need:

• 🛁 Ultrasonic bath (can be bought for a short time) 1500-2000 RUB. or find in the service center)
• 💧 Distilled water or special liquid for ultrasonic cleaning
• 🔧 Plastic tweezers

Instructions:

1. Remove the speaker's safety net, and then gently apply it to a plastic card (the grid is held on double-sided tape).
2. Place the speaker in a bath with liquid for 1-2 minutes at a frequency of 40-50 kHz.
3. Take out the speaker with tweezers and dry for at least 24 hours in a warm, dry place (such as near the battery).
4. Set the grid back by pressing it around the edges.

⚠️ Attention! Don't dry the speaker with a hair dryer or heater, it deforms the membrane. Also, don't use acetone or gasoline to clean the speaker, because they destroy glue and seals.

Ultrasound removes 95 percent of the contaminants, including oxides and microbes, but it's only suitable for power users. If in doubt, you better contact the service.

Method 4: Software Diagnostics Before Cleaning

Before you disassemble the phone, make sure it's the pollution, not the software settings. On the Redmi Note 8, the sound may be lost due to:

• 🔇 Disabled speaker in the engineering menu (for example, after an unsuccessful update).
• 📱 Failure in the audio codec firmware (chip responsible for sound).
• 🎧 Activated mode "External speaker" (sound goes only to the headset).

How to check:

1. Go to Settings → About Phone → MIUI version and tap 7 times on the line "Kerole". This will open Advanced settings.
2. Enter the code ##36446337## (Equipment Test) and select Audio → Speaker Test.
3. If there is a sound in the test, but not when calling, the problem is in the call settings (Settings → Sound → Call volume).

If software methods didn't work, go back to mechanical cleaning. Don't reset to factory settings without backing up: on the Redmi Note 8, this can cause data loss in the shared storage slot.

Prevention: How to protect the speaker from pollution

To clean the speaker less often, follow these recommendations:

• 🛡️ Use a protective film with a cutout under the speaker (but do not glue it completely!).
• 📵 Avoid telephone conversations in dusty spaces (construction sites, workshops).
• 💨 Once a week, blow the speaker with dry air (you can mouth, without a canister).
• 🚿 Do not put your phone near steam sources (kettle, bath) – condensation accelerates corrosion.

The unique feature of the Redmi Note 8 is that its speaker has no hydrophobic coating, so even a little humidity leads to oxidation of the contacts. If you often use your phone outside, rub the speaker area with alcohol every 2 months.

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Regular prevention increases the life of the speaker by 2-3 times. Even if the sound seems normal, clean it every 3 months - this will prevent the accumulation of "invisible" dirt.

FAQ: Frequent questions about cleaning the Redmi Note 8 speaker