The screen Xiaomi Mi 9 Lite is one of the most vulnerable parts of the smartphone: it takes one fall on asphalt or an unsuccessful press in your pocket to cracks, broken pixels or completely stop working touchscreen. In the service center for the replacement of the display module will take from 3,500 to 7000 rubles, but with the tools and patience, the procedure can be carried out independently - saving up to 70% of the cost. The main thing is not to make a mistake with the choice of spare parts and follow the technology of dismantling.
In this article, we will go into detail on the process from fault diagnosis to final build. You will learn how to distinguish the original display from the copy, what tools you will need (and where to buy them cheaper), and get step-by-step photos with comments on each step. We will focus on typical beginner errors — for example, why the sensor may not work after the replacement or yellowness on the screen. If you have never taken out a smartphone, start by watching the video instructions at the end of the article — this will help visualize the process.
How do you know if the display is broken?
Before you order a new screen, make sure that the problem is in the screen, and the symptoms of a failure of the Mi 9 Lite display module can be divided into three categories:
- 🔍 Mechanical damage: cracks, chips, broken glass (even if the image is displayed).
- 🖥️ Image artifacts: vertical/horizontal stripes, broken pixels, flickering or “snow” on the screen.
- 👆 Touchscreen malfunctions: the sensor does not respond to touch, "floating" presses, spontaneous swipes.
If the screen is completely black, but the smartphone is making notification sounds and vibrating, the problem may be in the connection plume or the motherboard.
- Connect the Mi 9 Lite to charging – if the indicator lights up, then the power is coming.
- Connect to your PC via USB – if the computer detects the device, the problem is localized to the display.
- Light a flashlight on the screen at an angle - if the image is weakly visible, the backlight is broken.
⚠️ Attention: If after a fall, the smartphone does not turn on at all (no vibration, sounds, charging indication), do not rush to blame the screen. Most likely, the battery fell off or the board was damaged.
Selection of display module: original vs copy
The display for Xiaomi Mi 9 Lite is sold in three versions: original (OEM), premium copy (A+ or "1:1") and budget copy (A- or "economy"). The difference is not only in price, but also in display quality, sensor sensitivity and durability.
| Parameter | Original (OEM) | Copy of A+ | Copy of A- |
|---|---|---|---|
| Price, ₽ | 5 000–7 500 | 2 500–4 000 | 1 200–2 000 |
| Color quality | 100% compliance with factory settings | 95–98% (may be colder/warmer) | 80-85% (appreciable yellowness, pale colors) |
| Sensor sensitivity | Instant response | Delay to 50 ms | Delay up to 100-150 ms, skipping presses |
| Term of service | 3-5 years | 1-2 years | 6–12 months |
| Guarantee | Yes (at official sellers) | Nearby (1-3 months) | No. |
Where to buy spare parts:
- 🛒 Official Dealers: Mi Store, Xiaomi Shop – only original modules, but expensive.
- 🌍 Chinese marketplaces: AliExpress, Banggood are cheaper, but risk a fake. Look for sellers with a rating above 98% and reviews with photos.
- 🔧 Local service centers: often sell used originals after replacement under warranty (price 30% lower than the new one).
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Check the compatibility of the module before buying! On the Mi 9 Lite, displays labeled DM-01-01 or DM-01-02 (the difference in the glass manufacturer) are installed.
Necessary tools and consumables
To replace the screen, you will need a minimum set of tools that can be bought as a ready-made kit (cost). ~800–1 500 ₽) Or individually. Here's the full list:
- 🔨 Plastic mediators / blades (2-3 pieces) - to separate the body.
- 🔧 Screwdriver. T3 and T5 — for module attachment screws.
- 🧲 Magnetic mat or tray – so as not to lose small details.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- 🧴 Isopropyl alcohol (90%+) — clean-up.
- 📦 New bilateral scotch (e.g, 3M 9448A) — screen-lock.
- 🛡️ Protective film/glass – for installation after repair.
If you plan to do repairs regularly, it makes sense to buy a screen suction cup (150-300). ₽) — It makes it easier to remove the display. You can do without it for a one-time procedure, but be prepared for the fact that it will be more difficult to disconnect the module.
Turn off your smartphone and remove it. SIM-map|Make a backup copy of the data (in case of an error)|Charge the battery 30 to 50%|Prepare a workplace with good lighting|Check all the tools for availability-->
⚠️ Warning: Do not use metal blades to disengage the body!Even a small scratch on the Mi 9 Lite aluminum frame can lead to corrosion and loss of leakage (especially if the later gets moisture.
Step-by-step instructions for replacing the display
The screen replacement process takes 1 to 3 hours depending on experience.Follow the instructions strictly in order to avoid damage to plumes or motherboard.
Step 1: Removing the back cover
1. Turn off the smartphone and place it on a flat surface with the screen down.
2. heat the hair dryer back cover around the perimeter for 2-3 minutes (keep at a distance of 5-7 cm, so as not to overheat the battery).
3. Insert a plastic mediator into the gap between the lid and the body (start at the lower left corner where the latches are located). Carefully drive the tool along the edge until the lid is detached.
What to do if the lid does not lend itself?
Step 2: Shutting off the battery
1. Once the lid is removed, you will see a battery pack with a black protective film. Take it off carefully (do not damage the contacts!).
2. With a T3 screwdriver, unscrew 4 screws that fix the metal plate over the battery connector.
3. Plastic mediator, put the battery connector and disconnect it from the motherboard. This is a must-do step - if you don't turn off the power, you risk burning the board in further disassembly!
Step 3: Dismantling the Old Display
1. Heat the front of the smartphone (from the screen side) with a hair dryer for 3-5 minutes. This will soften the glue that holds the display.
2. With a suction cup (or wide mediator), gently lift the screen from the bottom edge. Don't pull too much - plumes pass under the display!
3. With a T5 screwdriver, unscrew the 6 screws that attach the metal frame of the screen. Remove the frame and disconnect the display and touchscreen plumes (they are fixed with latches - put them under the mediator).
Now you can remove the old module completely, and clean the frame of the smartphone from the glue residue with isopropyl alcohol.
Step 4: Install a new display
1. Take the protective film off the new screen and gently place it in the old one's place. Make sure the plumes are not twisted.
2. Connect the plumes to the motherboard (first touchscreen, then display) and fix the latches.
3. Set a metal frame and twist the T5 screws. Don't pull over -- light enough.
4. Apply a new two-way tape around the perimeter of the screen and press the display tightly against the body.
Step 5: Assembly and testing
1. Connect the battery and check the health of the screen (turn on the smartphone). If there is an image, but the sensor is not working, reconnect the touchscreen plume.
2. Set the back cover by snapping it around the perimeter, warm up the edges with a hairdryer if necessary for better fixation.
3. Twirl the screws of the cover (do not confuse them with places - on the Mi 9 Lite they are of different lengths!).
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After assembly, be sure to check the tightness of the case! If there are gaps between the lid and the frame, moisture and dust will get inside, which will lead to corrosion of the contacts.
Common Mistakes and How to Avoid Them
Even if you change the screen carefully, you can run into problems, and here are the most common mistakes and ways to fix them:
- 🔄 Screen not turning on: check the connection of the plumes (especially the backlight connector). If the image is but it is dim - a problem in the backlight inverter (may require replacement of the board).
- 👆 Sensor is not working: turn off and reconnect the plume of the touch screen. If it does not help, check it for damage (sometimes rubbed with a careless installation).
- 🎨 Distorted colors: This is typical of cheap screen copies. Try calibrating the display in the settings (Settings) → Screen. → If it doesn't work, just replace it with a quality module.
- 🔋 Fast battery drain: After changing the screen, the smartphone can discharge faster due to an unoptimized display driver. reset to factory settings (Settings) → The phone. → Reset).
If you have vertical stripes or flickering after the replacement, the display plume is likely damaged, in which case you will have to disassemble the smartphone again and replace the plume (cost). ~500–800 ₽).
⚠️ Warning: If after assembly, the smartphone starts to overheat or spontaneously reboot, immediately turn it off! this is a sign of a short circuit that can disable the motherboard. Disassemble the device and check if you have closed the contacts with metal parts (for example, a screwdriver).
Replacement cost in service vs self-repair
The price of replacing the Xiaomi Mi 9 Lite display in service centers varies depending on the region and the status of the workshop.
| Type of service | Cost of work, ₽ | Cost of the spare part, ₽ | Totally, ₽ | Guarantee |
|---|---|---|---|---|
| Official Mi Service Service Service | 2 500–3 500 | 5 000–7 500 (OEM) | 7 500–11 000 | 6–12 months |
| Unofficial service (with guarantee) | 1 500–2 500 | 2,500–4,000 (copy of A+) | 4 000–6 500 | 3–6 months |
| Unofficial service (without warranty) | 1 000–1 500 | 1,200–2,000 (copy A-) | 2 200–3 500 | No. |
| Self-sustaining replacement | 0 | 1 200–7 500 | 1 200–7 500 | Depends on the part seller |
The best way to buy a part is to buy it yourself and only give it to the service for installation, so you save up to 40%. ~5 000 ₽, a) Replacement in a verified workshop — ~1 500 ₽. Total: 6,500 ₽ 10,000 ₽ service-wise.
But keep in mind that if you've never disassembled a smartphone, the risk of damage when you replace something yourself is ~30%, in which case it's cheaper and safer to turn to professionals.
Video Instructions and Useful Resources
For a visual understanding of the process, we recommend watching the video disassembly Xiaomi Mi 9 Lite.
- 🎥 How exactly the author heats the body (temperature, hair dryer distance).
- 🔧 The order of spinning screws (on the Mi 9 Lite they are of different lengths!).
- 🖥️ Connecting the plumes is the most important stage.
Useful resources:
- 📄 Firmware base for Xiaomi – if after changing the screen you need to reflash the touchscreen.
- 🛠️ Trend on 4PDA — Discussion of Mi 9 Lite repairs with tips from owners.
- 📦 AliExpress – search for spare parts by code DM-01-01 Mi 9 Lite.
If you are looking for a specific video, type in the search for YouTube query: Xiaomi Mi 9 Lite display replacement guide. Pay attention to the date of publication - current videos are not older than 2023.