Replacement of the screen with Xiaomi Mi 9: full instructions with photos and expert tips

Cracked or broken screen on Xiaomi Mi 9 — The problem that many owners face after 3-4 Even if you're operating carefully, a fall, a bump, or a factory defect can knock the display out. 4 000 before 8 000 RUB (depending on the region and screen type), but with tools and patience, you can save up to a few dollars. 70%, self-repair.

This article is a step-by-step guide with photos, connection schemes and proven tips from the masters. We will learn how to choose the right part, avoid errors during disassembly and do not damage the board or battery. Special attention will be paid to screen models (original vs copy), nuances of disconnecting plumes and testing after installation. If you have never repaired smartphones, do not worry: Mi 9 is a device with medium disassembly complexity, and if you follow the instructions, the risk of error is minimal.

⚠️ Warning: Replacing the screen will void the warranty (if it is still valid) and may result in data loss.If the phone doesn't turn on or the screen is completely black, check the other components first - perhaps the plume or motherboard is the problem.

In this article you will find:

• 🔍 How to choose a screen (original, OEM, copy) and where to buy without the risk of running into a fake
• 🛠️ Full list of tools with photos and alternatives (which can be replaced by available means)
• 📱 Step-by-step disassembly with an emphasis on the "weak spots" of the Mi 9 (glue, brittle latches)
• ⚡ Connection Schemes of plumes and what to do if the new screen does not work
• 🔄 Adjustment after replacement (sensor calibration, display check)

What screen to buy Xiaomi Mi 9: Original, OEM copy?

Part choice is the most critical step, with screen quality not only affecting the look of the screen, but also sensor performance, color reproduction and even autonomy (cheap copies can drain the battery faster).

• 🔹 Original Screen (Xiaomi) MDY10-EG or MDY10-EH) — It is an ideal solution, but it is expensive (from 6 000 rubles), guarantees 100% compatibility, correct color reproduction and long life, sold only from official dealers or in trusted stores (for example, AliExpress from sellers with a rating of 98%+).
• 🔹 OEM-Original Equipment Manufacturer – manufactured in the same factories as the original, but without the Xiaomi logo. Price: 3,500-5000 rubles. Quality is almost identical to the original, but may require firmware sensor driver.
• 🔹 Replica – cheap screens from third manufacturers (from 1,500 rubles), most often there are models labeled For Xiaomi Mi 9. Risks: poor sensor sensitivity, distorted colors, rapid wear and tear.

📌 How to distinguish the original from the fake?

Pay attention to:

1. Packaging – the original comes in a branded box with a hologram Xiaomi.
2. The marking on the trail must match the MDY10-EG or MDY10-EH.
3. Assembly quality – copies often show adhesive layer defects or uneven edges.

Screens for Mi 9 and Mi 9 SE Mi 9's not interchangeable. SE other plume connector and display size (5.97" vs 6.39").

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Before buying, check your Mi 9 serial number in the settings (Settings) → The phone. → Version. MIUI). Some batches of the original screens came with different versions of plumes – this is important for compatibility.

2. Screen replacement tools: what to prepare

To disassemble the Xiaomi Mi 9 will require a specialized set of tools. Do not try to get by with a knife or a screwdriver from the hardware store – this is almost guaranteed to damage the body or plumes.

• 🔧 Plastic blades (2-3 - for neat tweaking of the screen. Metal tools can scratch the frame.
• 🔥 Dryer or heat tile - for softening the glue (temperature 60-80)°C) Even a household hair dryer will do, but with power adjustment.
• 🧲 Magnetic screwdriver (cross, size) PH00 or PH0) — hull-rotor.
• 📦 Suction cups (2 pcs) - help to evenly raise the screen after heating.
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 🔌 Tweezers - to work with plumes.
• 📏 Plastic card - an alternative to a shoulder blade for screen separation.

⚠️ Note: If you don’t have experience with microelectronics, buy a screen replacement kit (costs about 1,000 rubles on AliExpress) that includes all the necessary tools, including duct tape to fix the new display.

🔹 What can be replaced by available means?

• Fen → Warmer or iron (wrap your phone in foil and warm up) 5-7 minute).
• Suction cups. → Scotch or stationery rubber (stick to the screen and pull up).
• Plastic spatula → Mediator or old bank card.

Turn off the phone and remove it. SIM-map|Cover the table with a soft cloth (so as not to scratch the screen)|Prepare a screw container (a magnetic mat can be used)|Check the battery charge (should be 30-50% for safety)|Take a photo of the original screen from all sides (useful when assembling)-->

3. Step-by-step disassembly of Xiaomi Mi 9: shooting the old screen

Disassembling the Mi 9 requires care, with many fragile plumes and small parts inside. Take your time, especially during the battery detachment phase. Average disassembly time for a beginner is 40 to 60 minutes.

🔹 Step 1: Turn off and heat up

1. Turn off the phone and remove the tray for SIM-map.
2. Warm up the screen edge (not the center!) for 2-3 minutes. Keep the hair dryer at a distance of 5-7 cm to avoid overheating the battery.
3. Try to gently tamper with a plastic blade on the side (where the volume buttons are). If the glue does not lend itself, warm up for another 1-2 minutes.

🔹 Step 2: Screen separation

• As soon as the blade entered the screen 1-2 mm, run it around the perimeter, separating the glue.
• Use suction cups to raise the display evenly. Don't pull too much -- there are plumes underneath the screen!
• When the screen is separated, place it on the table with the display down (so as not to damage the glass).

🔹 Step 3: Disconnecting the plumes

Now we need to turn it off:

1. Battery plume (black connector at the bottom of the board) First disconnect it, it will prevent short circuit!
2. The display plume (white connector at the top of the board).
3. Sensor plume (thin flexible cable next to the display plume).

⚠️ Attention: The Mi 9 has a metal shield that covers some of the connectors, and it needs to be carefully tucked in and removed with a screwdriver!

📌 Photo of the plume connection circuit:

🔹 Step 4: Removing Old Adhesive

With isopropyl alcohol and a wipe, remove the glue residue from the frame of the case. Do not use acetone or solvent - they can damage plastic parts.

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The most common mistake in disassembling is damage to the battery plume. Always disconnect it first and don't pull the wires!

4. Installation of a new screen: connection and fixation

Before installing the new display, check:

• 🔹 Does the marking of the plume match the original.
• 🔹 Are there any microcracks or scratches on the glass (especially on copies).
• 🔹 Does the screen have adhesive tape (if not, buy separately, for example, 3M 9448A).

🔹 Step 1: Connecting the plumes

1. Carefully connect the sensor plume (green connector). It's the most fragile.
2. Connect the display plume (white connector) Make sure it sits before the click.
3. Put the metal shield back in place and secure it with screws.
4. Connect the battery plume (black connector).

🔹 Step 2: Check before fixing

Turn on the phone (hold the power button for 10-15 seconds) and check:

• 📱 The screen turns on and displays a picture without artifacts.
• 👆 The sensor responds to touches throughout the display.
• 🔦 The backlight works (no dark spots or flickering).

⚠️ Attention: If the screen is not turning on or the sensor is not working, do not fix it with glue! Recheck the connection of the plumes. A common error is the loose fit of the display connector.

🔹 Step 3: Screen fixation

1. Apply a new adhesive tape around the perimeter of the frame (if it is not on the screen).
2. Carefully attach the screen starting at the top (where the speaker is).
3. Press the display evenly over the entire area (you can use a heavy book).
4. Set the sleeves on the sleeves (do not slap them!).

📌 Tip: If the adhesive tape was not attached, use double-sided tape thickness 0.2-0.3 mm. Apply it not in a solid strip, and in small segments (2-3 cm) - so it will be easier to remove the screen in the future.

5. Post-replacement adjustment: calibration and testing

Even if the new screen is working, it needs to be calibrated and checked for defects, which takes 10 to 15 minutes, but will save you from problems in the future.

🔹 Sensor calibration

If the sensor is not responding accurately (for example, it is not pressing where you are touching), calibrate:

1. Go to Settings → System → Additional → Screen Calibration.
2. Follow the instructions on the screen (usually press 5-10 points).
3. Reboot the phone.

🔹 Checking the display

Run the display test using the Screen Test app (available on Google Play).

• 🎨 Color rendering – whether there is yellowness or greenish tint (characteristic for cheap copies).
• 🔦 Lighting - whether there are spots or uneven glow.
• 📊 Sensor sensitivity – multi-touch test (simultaneous touch at 5-10 points).

🔹 What to do if the screen is not working?

If the display does not turn on or does not work correctly after replacement:

• 🔌 Recheck the connection of the plumes (especially the white display connector).
• 🔄 Try resetting the settings (Settings) → System system → Resetting settings).
• 📱 If the screen is original or OEM, but does not work – it may require the driver firmware (refer to the service).
• 💥 If the phone doesn’t turn on at all, check if you’ve damaged the battery plume or the battery itself.

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If the screen flickers or turns off spontaneously after the replacement, check the mass contact (the metal frame around the screen should touch the body).

6. Frequent mistakes and how to avoid them

Even experienced wizards sometimes make mistakes when replacing the screen with the Xiaomi Mi 9. Here are the most common problems and ways to prevent them:

• 🔥 Battery overheating - if you heat the dryer for longer than 3-4 minutes, the battery may swell.Solution: Use a temperature-adjusted heat tile (maximum 80)°C).
• 🧲 Loss of screws: Mi 9 has different lengths of screws. If you mix it up, you can damage the board. Solution: Put the screws in separate containers with signatures (e.g., top cover, speaker").
• 📱 Damage to the sensor plume, which is thinner than the others and easily breaks. Solution: Disconnect it last and use tweezers.
• 🎨 Spots under the screen -- they appear if dust gets under the duct tape. Solution: Blow the frame with compressed air before fixing.
• 🔌 Short circuit: forget to disconnect the battery. Solution: Always start disassembling by turning off the battery!

⚠️ Warning: If the screen is working after the replacement, but the phone is running out quickly, check the standby current (AccuBattery app). Cheap copies of the screens can consume up to 30% of the additional power.

📊 Error statistics for self-replacement (according to service centers):

7.Where to buy screen and tools: Verified sellers

Buying parts for Xiaomi Mi 9 is better from trusted sellers to avoid counterfeiting.

🔹 Screens:

• 🌍 AliExpress - stores: Xiaomi Mi Store Official (originals and OEM) HONGKONG GOLDWAY (good OEM-screens, 99.1 rating%) DIGITAL WORLD STORE (Quick delivery, but check the reviews)
• 🏬 Offline stores: "Chip and Deep" (Moscow, St. Petersburg, Yekaterinburg) "Amperka" (parts for repairs)

🔹 Tools:

• 🛒 Replacement kit: AliExpress (search for "Xiaomi Mi 9 screen repair tool kit", price) ~1,000 rubles.).
• 🔥 Thermoplate: Bergeon 7030 (professional) or household Xiaomi Smartmi.
• 🧲 Screwdrivers: iFixit Pro Tech or Xiaomi Wiha.

⚠️ Note: When buying on AliExpress, always check:

• 📦 Seller rating (not lower than 98%).
• 💬 Photos (especially the last 3 months).
• 📋 Description – It should be specified that the screen is suitable for Xiaomi Mi 9 (cepheus).

📌 Tip: If you buy a screen on Avito or Yula, ask the seller to take a photo:

• The markings on the plume.
• The working screen (connected to the test board).
• Packages (if the original is claimed).

FAQ: Answers to Frequent Questions