How to Clean the Speaker and Microphone on Xiaomi Phone: The Complete Guide

Decreasing the volume of a conversational speaker or the appearance of extraneous noise during calls is a common problem faced by owners of Xiaomi, Redmi and POCO smartphones. Over time, dust, pile from clothes and skin fat penetrate the protective mesh, creating a dense plug that blocks acoustic waves. Ignoring this fact leads not only to discomfort when communicating, but can also provoke overheating of the speaker due to increased resistance.

Before you bring your device to a service center or buy new accessories, it is worth trying to restore the sound quality yourself. Regular cleaning can extend the life of the audio module and return the crystal clear sound that was in the early days of using the gadget. It is important to understand that the interior space of the smartphone is tightly packed, and access to the dynamic membrane is often limited, so you need to act carefully and methodically.

In this article, we will look at proven methods of removing contaminants that will not damage the moisture protection coating and delicate components of your device. You will learn which tools are really effective and which are better to abandon, so as not to turn a small problem into an expensive repair.

Causes of sound deterioration and diagnosis of the problem

The main enemy of smartphone acoustics is fine dust, which accumulates and compresses, and when combined with natural humidity and sebum, it forms a viscous substance that clogs the cells of the grid, especially if the phone is often carried in denim pockets or bags without a cover.

Diagnosing the problem is pretty simple: if you notice that the person you are talking to is getting worse than you are, and you have difficulty understanding their words even at maximum volume, it is likely to be pollution, and you should also pay attention to the appearance of a characteristic cod or "curl" on the incoming call.

For a precise check, you can use the MIUI engineering menu. You need to dial ##6484## in the dialer and select Receiver (for the top speaker) or Speaker (for the bottom speaker). If the sound is quiet or distorted, and the dirt is visible, you need to clean immediately.

⚠️ Warning: If the sound has not recovered after cleaning, it may be a software failure or physical damage to the membrane, in which case acting alone can make the situation worse.

Necessary Tools for Safe Cleaning

To clean the speaker on Xiaomi, it is not enough to blow on the hole. You will need a minimum set of tools that are found at home or sold in any electronics store. Use of inappropriate items such as needles or toothpicks is strongly discouraged, as they are easy to pierce the protective membrane.

The optimal set for the maintenance of the acoustics of the smartphone are:

• 🖌️ Soft brush for drawing or a special brush for cleaning equipment with natural bristles.
• 🧴 Isopropyl alcohol (concentration 90% or higher) or a special cleaner for electronics.
• 🧶 Microfibre or lilac-free wipes for optics.
• 🌬️ Pear for cleaning lenses (air-blower).
• 🧻 Sticky tape (scotch) or special cleaning clay (cleaning gel).

It is important to note that the use of water or alcohol-containing liquids with a low alcohol content (for example, cologne) is unacceptable. Water can cause corrosion of contacts, and additives in perfumes will leave a fatty coating. Isopropyl alcohol is ideal, because it evaporates quickly and does not conduct current.

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Use only a soft brush with a natural pile. Hard synthetics can scratch the body or push the speaker grid inside.

Preparation of the device for the cleaning procedure

Before any manipulations begin, you need to properly prepare your smartphone, which will protect the device from accidental damage and make the process more efficient, and the first step should always be to completely turn off the gadget.

If you have a removable battery in your phone, you have to remove it, although this is rare in modern Xiaomi models. SIM-card and memory card so that liquid or dust does not get into slots during cleaning.

Remove the protective glass or film if they cover the area of the upper speaker. Often dirt accumulates just under the edges of the protective coating. Carefully wipe the screen and body with a dry microfiber, removing surface contaminants.

Mechanical cleaning: removal of dust and pile

The mechanical method is the safest and most suitable for regular maintenance, and the essence of it is to gently sweep dust from the depths of the mesh without using liquids, and a soft brush is ideal for this.

Hold the phone at an angle so that the dust is poured outwards by gravity rather than getting clogged deeper. Circular motions, walk the brush across the entire area of the speaker and microphone grid. Don't push too hard, your job is to stir the dust, not to squeeze it.

After brushing, use sticky tape, wrap a small piece of tape sticky side out onto your finger or tweezers, and gently apply it to the net, which will help pull the villi that are stuck between the cells, repeat the procedure until the tape is no longer mud.

For hard-to-reach places, such as microphone holes on the ends of the case, a cleaning gel is great. Put a small amount of gel on the hole, wait a few seconds for it to flow in, and sharply remove. The gel will pull all the dirt out, but make sure it doesn't spread over the buttons.

Wet cleaning: the use of alcohol and special products

If mechanical cleaning fails, you can use a wet method. Never pour liquid directly onto the speaker, even if it's alcohol. Excess moisture can leak under the display or onto the motherboard, causing a short circuit.

The right technique is to moisten a cotton swab or a corner of a lintless napkin with isopropyl alcohol, and the liquid should be inside the pile, but not dripping from it. Carefully, without much pressure, wipe the speaker mesh, the alcohol will dissolve the fatty plaque and soften the compressed dust.

After treatment with alcohol, let the device dry for 10-15 minutes, although isopropyl evaporates quickly, it is better to be safe, at which time you can blow the holes with a pear to remove the remains of dissolved dirt.

⚠️ Warning: Do not use wet wipes for household appliances or glass. They contain water and surfactants that leave stains and can damage the oleophobic coating of the case.

Software Methods and Sound Customization

Sometimes the problem isn't physical dirt, but equalizer software or noise reduction. Xiaomi's MIUI and HyperOS smartphones have built-in diagnostic and customization tools.

Check the sound settings in the Settings menu → Sound and Vibration → Sound Effects. Make sure that the Mi Sound mode is on or the appropriate profile is selected (e.g. Headphones or Dynamics) if it is available for your model. Resetting the equalizer settings to standard values often helps remove artificial distortions.

Also worth paying attention to the function "Noise Elimination" during a call. In some versions of the software it works aggressively, cutting the voice frequencies, which creates the illusion of a quiet speaker. Try to turn off noise cancellation in call settings or during a conversation (the speaker / noise icon on the call screen).

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Software cleaning through an engineering menu or resetting sound settings helps if the physical cleaning didn't give results, but the speaker doesn't wheez.

What to do categorically can not be done

In the pursuit of pure sound, users often make mistakes that lead to a device breakdown. There are a number of actions that are strictly prohibited when servicing the acoustics of a smartphone.

First, forget about the vacuum cleaner. The powerful airflow and static electricity that comes from running a household vacuum cleaner can tear off the speaker membrane or damage the microphone. The same goes for compressors for pumping tires, the air pressure should be minimal.

Secondly, don't use metal objects like needles, pins, toothpicks, which are very easy to pierce the mesh and damage the speaker, and even if you think you're being careful, one awkward move can be fatal.

• ❌ Do not heat the speaker with a hair dryer on hot mode - the glue can melt and the mesh will unstick.
• ❌ Do not use acetone or solvents to remove varnish – they corrode plastic.
• ❌ Don’t try to disassemble your phone if you don’t have experience – you’ll lose your warranty.

⚠️ Attention: Using an ultrasonic bath at home is dangerous. Ultrasound can disrupt the adhesive connections inside the speaker module, causing it to fail completely.

Prevention and care of acoustics

To avoid the question of “how to clean the speaker” too often, it is recommended to follow simple rules of operation. Wearing a smartphone in a case with protective sides reduces the amount of dust that enters the holes on the ends.

Regularly, at least once every two weeks, wipe the areas of speakers and microphones with dry soft cloth. This will prevent the accumulation of fatty plaque, which serves as a “magnet” for dust. If you are in a dusty room (construction, beach), try to talk less on the phone without a headset.

Following these simple guidelines will keep your Xiaomi’s excellent sound quality for years to come.Remember, prevention is always cheaper and easier than repair.

Frequently Asked Questions (FAQ)