Replacement of the display on Xiaomi Redmi 9: a detailed guide with photos and nuances

A cracked or broken screen on Xiaomi Redmi 9 is one of the most common problems after falls or mechanical damage. Many users immediately run to the service center, but in practice you can replace the display yourself, saving up to 70% of the cost of repair.

In this article, we will take you through the entire process from A to Z, from fault diagnosis to final testing, and you will learn which display modules are suitable for Redmi. 9 (including versions of Redmi 9A/9C/9T), How to avoid typical disassembly errors and what to do if the screen does not respond to touch after replacement. We will pay special attention to the hidden nuances that even experienced masters keep silent about – for example, why a new display can “fall off” in a week or how to check the originality of a spare part before buying it.

If you've never taken a smartphone apart, don't worry. The Redmi 9 is a budget lineup, and it's simpler than flagship models, and 90 percent of the screen failures in this model are due to touchscreen damage, not the matrix damage, which makes repairs easier and lowers the cost. But there are pitfalls: for example, turning off the battery plume incorrectly can short circuit, and cheap Chinese copies of displays often have "dead zones" at the edges.

1. Diagnosis: Is the display really to blame?

Before you order a new screen, make sure that the problem is that the Redmi 9 display may have a breakdown that matches the other components:

• 🔍 Cracks or broken pixels are an obvious sign of mechanical damage, but if the screen is whole and the image is distorted, it could be the graphics chip or the plume that's to blame.
• 👆 The sensor doesn't work, but the image is there -- most often the problem is the touchscreen or the plume.
• 🖥️ The screen doesn’t turn on, but the phone vibrates/sounds are there – check the backlight (it can burn out when it falls) or the display connector.
• 🔄 Spontaneous touches - a sign of damage to the touchscreen or getting moisture under the screen.

For accurate diagnosis, follow the following steps:

1. Connect your smartphone to your computer or charger, and if the charging indicator is on and the screen is black, it's a problem with the backlight or the plume.
2. Try calling Recovery Mode (squeeze Power). + Volume up. If the menu is displayed, the display is good and the problem is the firmware.
3. If you call from another device, and the screen doesn't respond, 99 percent of the fault is the display or its plume.

⚠️ Warning: If the phone falls into water or comes into contact with liquid before it breaks, don't turn it on! A short circuit can damage the motherboard. In this case, you first need to dry the device in rice or silica gel for 24-48 hours.

2. Selection of spare parts: original vs. copy

The quality of the display depends not only on the appearance, but also on the durability of the repair. - Xiaomi Redmi 9 (model) M2003J15SC) There are three types of spare parts:

How to distinguish the original from the fake when buying:

• 📦 Packaging – the original displays come in Xiaomi’s proprietary box with a hologram and serial number.
• 🔍 The plumes are flexible, clearly labeled, and often thin and brittle on the copies.
• 🎨 Color rendering – turn on the test mode (##6484##) and compare the shades with the other Redmi 9.
• 🛡️ Oleophobic coating - on the original, drops of water are collected into balls, on copies they spread out.

Where to buy? Best options:

• 🛒 AliExpress - Hong Kong Goldway or DIGITAL WORLD STORE (rating 98%+).
• 🏬 Local service centers – often sold OEM-spare parts with guarantee.
• 🌍 eBay – to search for original displays (China country filter» + reviews).

⚠️ Attention: Displays for Redmi 9A (model M2006C3LG) redmi 9C/9T (M2006C3MI) They have different plume connectors and different location of the holes under the speaker. Always check the exact model in the settings (Settings) → The phone. → Model).

3. Tools and training required

To replace the display on Redmi 9, you will need:

Screwdriver. T3 and T5 (rear-cover)

Plastic blades or mediators (2-3 pieces)

Screen suction cup (∅ 5-7 cm)

Tweezers with curved ends

Dryer or thermo-air station (power 300-500 W)

Double-sided tape or glue B-7000 (plume-fix)

Antistatic bracelet (optional, but recommended)-->

Preparation of the workplace:

1. Work on a clean desk with good lighting, and a white table is perfect, so it's easier to spot the cogs that have fallen.
2. Turn off the phone and remove it. SIM-map + The battery doesn't need to be touched (we'll shut it off later).
3. Take a photo of the back cover of the phone – this will help to correctly position the screws during assembly.
4. Heat the hair dryer back cover around the perimeter for 2-3 minutes (temperature 60-70)°C) This will soften the glue and make it easier to disassemble.

Important: Redmi 9 has a battery plume glued to the back cover, and if you tear it off, you'll have to solder a new one, which makes it harder to repair, so you need to warm the lid carefully, without overheating one area.

💡

Before disassembling, put the phone in a silica gel bag for 10-12 hours, which will remove moisture from the case and reduce the risk of short circuit when working with plumes.

4. Step-by-step instructions for replacing the display

Disassembly starts with the back cover – it is safer than trying to tamper with the screen in the front (the risk of damaging the plumes).

Step 1 Remove the back cover

1. Heat the edge of the lid with a hair dryer (do not direct the airflow to the camera or microphone!).
2. Insert a plastic blade into the gap between the lid and the body (start with the lower left corner where the antenna lines are).
3. Carefully drive the shoulder blade around the perimeter, separating the lid, and if you feel resistance, warm up the area again.

Step 2. Shutting down the battery

• Unscrew 5 screws that fix the metal plate over the battery (use a screwdriver). T3).
• Put a plastic spatula on the battery connector (white), and gently disconnect it. Don't pull the wires!
• Fix the connector with tape to the case so that it does not touch the contacts on the board.

Step 3: Dismantling the old display

1. Heat the front of the phone (screen) with a hair dryer for 3-5 minutes. This will soften the glue around the perimeter.
2. Stick the suction cup to the bottom of the screen (where the charging connector is) and pull it up. If the screen doesn't respond, warm it up again.
3. Insert a plastic blade into the gap and slowly move it around the edges, separating the display. Be careful - there are plumes under the screen!
4. When the screen separates, disconnect the plumes of the touchscreen and the display (they are fixed with latches - put them in a spatula).

Step 4: Installation of a new display

• Remove the protective film from the inside of the new screen (if any).
• Connect the plumes to the motherboard in reverse order: first the display, then the touchscreen.
• Make sure the plumes are not twisted and lie flat. B-7000.
• Carefully attach the new display to the body, starting at the top, press it around the edges to fix.

Step 5: Build the phone

1. Connect the battery and check the screen performance (turn on the phone).
2. If everything works, turn off the battery again and fasten the back cover.
3. Tighten the screws cross-cross to avoid distortions.

5. Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing the Redmi 9 display, and here are the most common ones and ways to prevent them:

• 🔥 Battery overheating - if you heat one area with a hair dryer for too long, the battery can swell.Solution: Use a thermo-air station with a temperature of no more than 80°C and warm up the body evenly.
• 🧲 Loss of screws – Redmi 9 uses 3 types of screws (T3, T5 and one hexagon under SIM-Solution: Set them up in separate containers or put them on tape in order of twisting.
• 📶 Damage to the antenna lines -- they're on the sides of the body. Solution: Don't push the shoulder blade too hard when the lid is separated.
• 🔌 Short circuit: This happens when you forget to turn off the battery before you run the plumes. Solution: Always check the battery shutdown with a tester.

Another common problem is unplugging the display after 1-2 weeks, which is because:

• Use of cheap glue (in budget copies of displays it is often of low quality).
• Insufficient heating during installation (glue is not activated).
• The ingestion of dust or fat on the glue surface.

To avoid this:

1. Before installing the new display, wipe the frame of the body with alcohol.
2. Use extra glue B-7000 perimeter.
3. After installation, place the phone under a press (for example, between two books) for 12 hours.

💡

If you replace the display, the phone starts to run out faster, check if you've damaged the battery plume, which is 30 percent of the time, and that's what causes the increased power consumption.

6. Testing and calibration of the new screen

Once assembled, you need to check the performance of the display and if necessary calibrate it.

Visual inspection:

• Check if there are any broken pixels (black or colored dots). Use a uniformity test (Settings) → Screen. → Colors).
• Make sure the backlight is uniform - there are no dark spots at the corners (this is a sign of poor plume contact).
• Check the sensitivity of the touchscreen – swipe your finger around the edges of the screen, whether all touches are recorded.

Programme audit:

1. Install Screen Test from Google Play and run tests on: Color gradients (matrix check), Multi-touch (simultaneous touches in 5-10 points), gesture response (swipes, double-touch).

Settings → System → Additional → Screen Calibration

Verification of sensors:

Redmi 9 has a proximity and light sensor underneath the screen to make sure they work.

• Call the phone and hold your palm to the top of the screen – the display should go out (approach sensor).
• Point a flashlight on the screen - the brightness should change automatically (light sensor).

⚠️ Note: If the sensors stop working after the display is replaced, you may have damaged the flexible plume that runs from the top of the screen to the motherboard, in which case you will need to replace the plume (cost). ~800 ₽).

7.How much does it cost to repair the service vs. independently

The cost of replacing the Redmi 9 display varies by region and type of part. Here are the current prices for 2026:

Is it more profitable to repair yourself?

• You have experience with electronics (e.g., you’ve already disassembled laptops or other phones).
• You are willing to take risks – if you make a mistake, you can damage the motherboard (repair will cost 8000-15 000). ₽).
• You have found a quality part at a good price (for example, a good price, OEM-Display on AliExpress for 3,500 ₽).

Please contact the service if:

• Phone for warranty (self-repair cancels it).
• You are not sure about your skills – saving 2,000 ₽ Don’t risk not having a phone.
• You need a guarantee for work (in the service give from 1 month).

8.Alternative solutions: when a display replacement is not needed

Sometimes the Redmi 9 screen problem is solved without a complete module replacement.

1. Glass replacement (if the matrix is intact)

• If only the glass cracked, and the image and touchscreen work, you can only replace it. Cost: 1,000-1,500 ₽.
• Cons: the process is more complicated than replacing the entire module (you need to separate the glass from the matrix using special equipment).

2. Repair of plumes

• If the screen flashes or part of the display doesn't work, the problem may be the oxidation of the plume contacts, which can be cleaned with alcohol and eraser.
• If the plume is broken, it can be replaced separately (price) ~500–800 ₽).

3. Software setup

• If the touchscreen “floats” or incorrectly responds to touches, try resetting the screen settings: → System system → Resetting settings → Resetting screen settings
• If after replacing the display, artifacts (strips, flickering) appeared - update the firmware through Settings → Updating the system.

4. Connection to an external display

• If the screen is completely dead, but the phone is working, you can connect it to the monitor through the phone. USB-C → HDMI adapter (cost) ~1 000 ₽).
• This is a temporary solution, but will allow you to save data and use the phone until repairs.

💡

If the phone doesn't turn on after the fall and the screen is black, don't be in a hurry to change the display. First, check if the battery or the display has gone off, and 40 percent of the time, the problem is solved by simply reconnecting the connectors.

FAQ: Frequent questions about replacing the Redmi display 9