How to clean Xiaomi Mi 9: from screen to speakers without the risk of damaging the smartphone

Xiaomi Mi 9

Cleaning up the smartphone

USB-C

Many users are afraid to clean the Mi 9 themselves for fear of damaging the glass case or the sensitive screen. However, with the right approach, the procedure is completely safe. This article provides step-by-step instructions for the model (for example, a retractable front camera), recommendations for choosing means and a list of errors that often lead to breakdowns, and you will learn how often to clean the smartphone and what “folk” methods are strictly prohibited.

If your Mi 9 is less responsive to touch, the speakers are hoarse and charging is interrupted, most likely the problem is pollution.

Preparation for cleaning: what will be needed

Before you start, gather everything you need. Don't use handmade tools like wet hand wipes or paper towels, they leave scuffs and scratches. Here's a full list of safe accessories:

• 🧴 Microfiber wipe (the one that comes with glasses is perfect) is soft and doesn't scratch surfaces.
• 💧 Special screen cleaning fluid (e.g., Xiaomi Screen Cleaner or Baseus analogues) Distilled water at the very least.
• 🧲 Magnetic speaker brush (can be replaced with a soft toothbrush with cropped bristles).
• 🔌 Wooden or plastic toothpick for cleaning connectors.
• 📱 Scotch or sticky tape (to remove dust from hard-to-reach places).
• 🔦 A flashlight (to illuminate the contaminants in the connectors).

What can't be used:

• 🚫 Alcohol solutions (damage the oleophobic coating of the screen).
• 🚫 Wet wipes with flavors or fragrances.
• 🚫 Hard brushes or metal objects (e.g., paper clips).
• 🚫 Compressed air (may damage microphone or speakers)

If you don’t have special products, you can prepare a safe solution yourself: mix distilled water and vinegar in a ratio of 1: 1. Never apply liquid directly to your smartphone – only on a napkin!

Screen and body cleaning: step-by-step instructions

The Mi 9 is covered with Gorilla Glass 6, but even that screen requires careful care, starting with removing the greasy spots and prints:

1. Turn off your smartphone so you will see all the contamination and avoid accidental touches.
2. Blow the dust off the screen (you can use a pear to clean your cameras).
3. Apply a few drops of cleansing liquid to a microfiber wipe (not on screen!).
4. Wipe the screen in soft circular movements, avoiding heavy pressure.
5. With the dry part of the napkin, remove the moisture residue.

Use the same method to clean the glass case, but pay attention to:

• 📱 Corners and joints (there is the most dirt accumulated).
• 🔘 On and Volume buttons (can be cleaned gently with a toothpick).
• 📷 Areas around the main chamber (often left with finger marks).

The Mi 9 features a retractable front camera, and don't try to manually clean it, because it's fragile, and if you press it hard, it can break down. If it doesn't move out or it makes a grind, call the service.

How to Clean Your Speakers and Microphone Without Risk

Clogged speakers are a common problem with the Mi 9. Dust and pile get into the grates, making the sound quieter or wheezing. Don't blow in the speaker mouth - saliva can damage the membrane.

Safe cleaning algorithm:

To clean the microphone (located at the bottom next to the USB-C connector):

• 🎤 Use a dry cotton swab slightly moistened in distilled water.
• 🚫 Don't push -- the microphone is very sensitive to mechanical stress.

⚠️ Warning: If the speaker stops working after cleaning, check if the contacts are moist. Turn off the smartphone and leave it in a dry place for 24 hours (for example, next to a silica gel packet).

Cleaning connectors: USB-C, SIM-tray and IR-port

The USB-C connector in the Mi 9 is often clogged with pile from pockets or bags, resulting in poor contact when charging or connecting to a PC.

1. Turn off your smartphone and take out the cable.
2. Illuminate the connector with a flashlight - so you will better see the pollution.
3. Carefully remove the dust with a wooden toothpick (not metal!).
4. To remove the oxidation of contacts, use an eraser (sweeten them contacts inside the connector).

The slot for the SIM- card is cleaned similarly, but here it is important:

• 📶 Do not use sharp objects - you can damage the spring mechanism.
• 🔧 If the tray is not inserted back, check if the paperclip is bent (use the original one from Xiaomi).

The infrared port is located at the top of the body, and you just need to wipe it with a dry cotton swab, and it doesn't require deep cleaning.

Cleaning the camera: how not to damage the lens

The Mi 9's triple camera (48 MP + 12 MP + 16 MP) is particularly sensitive to contamination. Dust and greasy stains on the lenses lead to blurry snapshots and glare. Never rub the lens with your fingers or clothes - this scratches the protective glass.

The right course of action:

1. Blow the dust off the camera (you can use a pear).
2. Apply 1-2 drops of cleansing liquid on a microfibre wipe.
3. Gently wipe the lenses from center to edge (not in a circle!).
4. To remove persistent spots, use a cotton swab slightly moistened in distilled water.

The front camera is cleaned differently:

• 📷 If dust is visible on the lens, activate the camera in the Camera app - the mechanism will be pushed out automatically.
• 🚫 Do not touch the lens or blow on it, with a dry napkin moving lightly.
• ⚠️ If the camera doesn't retract, don't try to pull it out by hand! It can break the mechanism.

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To check if you damaged your lens during cleaning, take a test photo against a contrasting background (for example, a sheet of paper with text). If the picture is blurry or with artifacts, contact the service.

Deep cleaning: when you need to disassemble

If there are problems after the external cleaning (for example, the speaker is not working or the charging is interrupted), it may be that the dust has fallen into the body, in which case it will require partial disassembly. This is a risky procedure - if you do not have experience, you should contact the service.

What you can do on your own:

• 🔧 Remove the back cover (requires a mediator and a hair dryer to soften the glue) And inside, you can clean the battery compartment and the board from dust.
• 🧹 Blow the body with compressed air (but only if you are sure you won't damage the microphone).
• 📱 Clean the battery contacts with a lastic (if the smartphone does not hold the charge well).

⚠️ Warning: When disassembling the Mi 9, it is easy to damage the retractable camera plume or disconnect antenna contacts. If after assembly the network signal is lost or the camera is not working, turn off the smartphone immediately and contact the service.

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Disassembling your smartphone leaves you with no warranty (if it still works), and in most cases, deep cleaning is not required, regular external cleaning is enough.

How to Clean Xiaomi Mi 9 Frequently and How to Care for It

The frequency of cleaning depends on the conditions of use:

• 📱 Screen and case: 1 time every 2-3 days (if you carry in your pocket) or 1 time per week (if you use a cover).
• 🔊 Speakers and microphone: 1 time per month (or more often if you notice a deterioration in sound).
• 🔌 Connectors: 1 time every 2-3 months (or at the first sign of poor charging).
• 📷 Camera: Before important photography or if spots are noticed in the photo.

Care tips:

• 🛡️ Use a camera-protected case (e.g., the original from Xiaomi with protrusions).
• 🚿 Avoid moisture — despite partial spray protection, the Mi 9 is not waterproof.
• 🧴 Apply a hydrophobic coating on a screen (such as Nano-Coating) to repel fat and water.

FAQ: Answers to Frequent Questions