Replacement of the display on Xiaomi Mi 4X: full instruction with nuances and cost

Xiaomi Mi 4X (Mi is a man. 4c In some regions, a popular smartphone with a good iron but a fragile screen, falling from a height of human growth often ends in cracks, broken pixels or complete sensor failure. You can do it yourself, saving up to 70% of the cost of repairs, and this article provides a step-by-step process analysis, a list of necessary tools, typical beginner errors, and tips on how to avoid damage to the board.

It is important to understand: Replacing the screen with Mi 4X It's more complicated than today's modular models, where the display is glued to the frame, and the plumes are thin and brittle, but with the right approach, even a novice craftsman can do it in 1.5 to 2 hours. We will tell you how to disconnect the battery without the risk of short circuit, where to buy the original display (and how to distinguish it from a fake), and also give the current prices for spare parts in 2026.

If you have any doubts after reading, at the end of the article there is FAQ We have a checklist for those who are going to repair the phone, and we have an interactive checklist with checkpoints for those who are going to repair it.

Diagnosis of damage: when to replace the screen and when to repair

Not every crack on the screen requires a complete module replacement, sometimes just replacing the glass or repairing the plumes.

• 🔍 Cracks without disrupting work: if the sensor responds, the image is not distorted, and cracks only on the glass - you can do with changing the glass (cheaper 2-3 times). 4X This is risky: when peeled off, it is often damaged. OLED-matrix.
• 🖥️ Broken pixels or vertical stripes: indicate damage to the matrix.
• 👆 The touchscreen doesn't work: if the sensor doesn't respond after a fall, but the image is there, there's a problem with the plume or the controller. Sometimes it helps to reconnect the plume, but more often it requires a replacement.
• ⚡ Phone does not turn on: if after falling the screen is black and there is no reaction to charging, there may be damage to the board (the battery is disconnected, the power controller is burned.

On Mi. 4X Most often, it is the entire display module (matrix) that breaks down. + touchscreen + It's a design thing, and it's glued to a frame without shock-absorbing pads, and the plumes are thin and poorly protected. OLED-screen (not screen) IPS), Risk of damage to the matrix when falling above 40% – such displays are thinner and fragile.

⚠️ Warning: If the phone overheats or discharges quickly after a fall, do not turn it on until the screen is changed! This may be a sign of a short circuit in the plumes that will damage the motherboard.

2. Tools and parts: what to buy to replace the screen

To replace the screen with Xiaomi Mi 4X You'll need a specialized tool. Don't try to get by with a knife and a screwdriver, it's guaranteed to damage the body or the plumes:

Now for parts, for Mi. 4X Only original displays or quality copies from proven manufacturers are suitable (for example, BOE Or Tianma. Here's the difference between the original:

• 🔎 Barcode: The original screen must have a code pasted, which can be checked through the service Xiaomi Authenticity Check.
• 📦 Packaging: factory displays come in vacuum packaging with Xiaomi logo and hologram.
• 🔧 Trains: Copies often have thinner and more fragile connectors. Original ones have gold contacts.
• 💡 Backlight: when tested, the original must not flicker or have uneven brightness.

Cost of spare parts in 2026:

• 📱 Original Display: 4,500–6,000 ₽ (touchscreen).
• 📱 Quality copy: 2,500–3,500 ₽ (marriage ~15%).
• 🔧 Clay. B-7000 (for fixation: 200-300 ₽.
• 🔋 New battery (recommended to be replaced during disassembly): 1,200–1,800 ₽.

⚠️ Note: If you buy a display on AliExpress, pay attention to the reviews with photos! Often sellers send re-labeled screens from other models (for example, from Redmi Note 3) that do not fit the connectors.

Preparation for replacement: disassembly of the case and disconnection of the battery

Before starting work, turn off the phone completely and remove it. SIM-Memory card. Follow the instructions:

1. Heating the case: put the phone on the heat tile (temperature 80-90)°C) for 3-5 minutes or warm up the screen perimeter with a hair dryer.
2. Removing the back cover: slap the lid with a plastic mediator at the headphone jack. Carefully drive the instrument along the body, snapping the latches. 4X 12 pieces!
3. Turn off the battery: find the battery plume (it's under the black insulation tape) and unplug it with tweezers. Don't pull the wires! Use a plastic mediator to plug the connector.
4. Motherboard Removal: Unscrew 8 Torx screws T5, You can hold it around the edge, and it's attached to two-way tape.

At this stage, many people make critical mistakes:

• ❌ Don't turn off the battery. → short-circuit risk when working with plumes.
• ❌ They use metal tools. → scratch the body and damage the contacts.
• ❌ Heating the body too much → Plastic melts and the glue under the screen is damaged.

On Mi. 4X The display plume is located under a metal bracket - it must be unscrewed by Torx T4, Otherwise, you can't disconnect the screen, and even some service centers miss this, which causes contacts to break.

Turn off the phone and remove it SIM-map|

Warm up the case to 80-90°C|

Remove the back cover with a plastic mediator|

Disconnect the battery before working with plumes|

Unscrew the bracket of the display plume (Torx) T4)-->

4. Screen replacement Step-by-step: peeling off, connecting and testing

Now, the most important step is to unplug the old screen and install the new one.

1. Suction fix: glue the suction cup to the bottom of the screen (where the charging connector is). Pull it up carefully, and there should be a gap.
2. Pruning glue: insert a plastic mediator into the gap and drive it along the frame, cutting the glue. Be careful at the corners - there are plumes!
3. Disconnect the plumes: after you unplug the screen, unplug the 3 plumes (display, touchscreen, backlight) that are fixed by the latches -- tweezers.
4. Installation of a new screen: 🔌 Connect the plumes in reverse order (first backlight, then touchscreen, then display). 📏 Line the screen on the headphone jack - it should fit tightly to the frame. 🔥 Warm up the body with a hair dryer (60)°C) and press the screen for 2-3 minutes for gluing.
5. Testing: plug the battery and turn on the phone: 🖼️ Is the image displayed without artifacts. 👆 Does the touchscreen work in all zones. 🔦 Is there no flashing of light.

If the screen does not work after activation:

• 🔌 Check the connection of the plumes - they could not fully sit in the connectors.
• 🔥 Warm up the plumes with a hairdryer (60)°C) - sometimes contacts are oxidized.
• 🔧 Change the sleeves (if there are spares) - this will help identify the faulty.

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If the new screen doesn't turn on, but the phone vibrates when you press the buttons, the problem is the backlight plume. Try plugging it in first and then the others.

5.Typical problems after replacement and how to fix them

Even with a careful replacement, problems can occur, and here are the most common ways to solve them:

If the screen is working after the change, but the colors are distorted (for example, green or red is predominant), chances are you have installed a non-original matrix with a different color profile, in which case calibration through the engineering menu will help:

1. Enter the code ##36446337## for Mi 4X).
2. Go to the Display section → Color Calibration.
3. Select the Standard profile and save the settings.

⚠️ Warning: If the phone doesn't turn on after the replacement (no vibration, no charge indicator), don't plug it into charging! This could be a sign of a short circuit on the board.

6.Substitution cost in service vs self-repair

The price of a screen replacement on Xiaomi Mi 4X Service centers vary depending on the region and type of display:

• 🏙️ Moscow/St. Petersburg: 5,000–8,000 ₽ (spare-part).
• 🏘️ Regional cities: 3,500–6,000 ₽.
• 🔧 Informal workshops: 2,500–4,000 ₽ (Risk of substandard spare parts).
• 🛠️ Self-substitution: 2,500–4,500 ₽ (spare parts) + 1 000 ₽ (tool).

Savings in self-repair is 30-50%, but there are risks:

• 💥 Damage to the fee for careless work (cost of repair - from 3 000) ₽).
• 🔄 Marriage of spare parts (especially when buying on AliExpress).
• ⏳ Time loss – without experience, a replacement can take 3-4 hours.

If you decide to give the phone to the service, choose a trusted workshop.

• 📄 Warranty (minimum 3 months for spare parts and work).
• 🔍 Photos before/after repairs.
• 💬 Transparency of prices – good service will provide an estimate before repair.

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Replacement of the screen with Mi 4X It's justified if you have experience with electronics and quality parts, otherwise the risk of damage to the fee or getting a defective display is too high.

7.Professional tips: how to extend the life of a new screen

After changing the screen, many users experience repeated breakdowns due to improper use, and here are tips from the masters on how to avoid new cracks:

• 🛡️ Use the glass. + case: even if the screen is new, tempered glass (e.g. Spigen Tempered Glass) will reduce the risk of damage by 60).
• 🚫 Avoid extreme temperatures: Don't leave your phone in the sun or in the cold.The glue under the screen loses its properties when heated above 50°C.
• 🔋 Do not charge the phone lying on the screen: this creates pressure on the matrix and can lead to detachment of the plumes.
• 💧 Keep away from moisture: even if the phone does not sink, water ingress under the screen leads to corrosion of plumes.
• 🔄 Regularly check the mounting of the screen: if there is a backlash - contact the service for gluing.

If you drop your phone often, consider insurance. For example, Sberbank Online can get insurance for gadgets from 1,500 ₽/The year that will cover the cost of screen replacement.

To check the quality of the new screen, use test applications:

• 📱 Screen Test (checking broken pixels).
• 👆 Touch Screen Test (Multi-touch Test).
• 🔦 Display Tester (checking backlighting and color rendering).

FAQ: Answers to Frequent Questions