Xiaomi Redmi Note 4X — One of the most popular smartphones in the budget segment, released in 2017, and despite its reliability, its touchscreen (the touch layer of the screen) can eventually fail: stop responding to touch, “glut” when scrolling or completely covered with a web of cracks after a fall. In the service center for the replacement will take from 2,500 to 5,000 rubles, but with the tools and patience, the procedure can be performed independently.
This article is a step-by-step guide with photos, video examples, and spare parts compatibility tables, and we'll show you how to pick the right touchscreen for the Redmi Note. 4X (including versions with Snapdragon 625 and Helio processors X20), What tools will be needed and what to look for when disassembling so as not to damage the plumes or battery, you will also learn how to check the health of the new screen before final assembly and avoid typical errors that may cause the smartphone to fail to turn on.
Signs of a faulty touchscreen: when you need a replacement
Before you start repairing, make sure that the problem is in the touch layer, not a software failure or damage to the motherboard.
- 📱 The screen does not respond to touch at all or responds only to a part of the area (for example, only the right half works).
- 🌀 «Ghostly" clicks: the smartphone opens apps, scrolls pages or enters characters.
- 🔄 Response delay: 1-2 seconds between touch and reaction.
- 💥 Cracks or "web" on the screen surface, even if the display below them glows.
- 🔌 The sensor only works when charging is connected - a sign of problems with the plume or contact.
If the screen is completely black, but the phone vibrates when turned on or is illuminated when an incoming call is made, the problem may be in the display module (matrix) or backlight, in which case replacing one touch screen will not help - you will need a full display assembly.
⚠️ Warning: Before disassembling, check if the malfunction is caused by a software failure. To do this, restart your smartphone in Safe Mode (hold the power button). → long tap on "Switch off» → «Restart Safe Mode. If the sensor is working properly in Safe Mode, the problem is in the application, not the hardware.
Choice of touchscreen: original vs. analogues, what to buy
For the Redmi Note 4X There are three types of spare parts on the market:
- Original (OEM) — Remnants of factory batches, labeled as Original Xiaomi or Genuine, pluses: 100% compatibility, no calibration problems, cons: high price (from 3,500 rubles) and the risk of running into a fake.
- Premium-class copies - manufacturers BOE, Tianma, JDI. The quality is close to the original, but there may be nuances with color reproduction or sensitivity. Price: 1,800-2,500 rubles.
- Budget analogues are unnamed Chinese touchscreens, costing 800-1 500 rubles, but often have defects: uneven illumination, dead zones or poor oleophobic.
When buying, pay attention to:
- 📋 Smartphone model: Redmi Note 4X It has two versions: mido (Snapdragon 625) and nikel (Helio). X20). Touchscreens are not interchangeable for them!
- 🔧 Type of connector: should be indicated as ZIF-connector (for plume).
- 🎨 Color of the frame: black, white or gold - select the color of the body.
- 📦 Set: the set must be bilateral scotch, screwdrivers and shoulder blades.
| Manufacturer | Price, ₽ | Compatibility | Features |
|---|---|---|---|
| BOE | 2 200–2 800 | mido, nikel | Good color reproduction, but it can be a cold hue |
| Tianma | 1 900–2 500 | only mido | Rapid reaction to touch, but weak oleophobic |
| Unnamed (AliExpress) | 800–1 500 | clarify! | The risk of dead zones often requires calibration. |
| Xiaomi Original | 3 500–5 000 | mido, nikel | Compatibility guarantee, but high price |
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Check the reviews of the seller on the site before you buy. Often, under the guise of "original", they sell copies with a Xiaomi sticker. Ask the seller for a photo of the plume connector - the original one is marked with the Foxconn or Sharp logo.
Replacement tools: what you will need
For the Redmi Note disassembly 4X And a touchscreen replacement will be required:
- 🔧 Screwdriver kit: cross-haired PH00, flat 1.5 Mm, five-point Torx. T3/T4 (back-coat).
- 📱 Plastic blades (mediators) - 2-3 pieces for licking the lid and plumes.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- 🧲 Magnetic mat or tray - so as not to lose screws.
- 📏 Suction - to remove the screen after heating.
- 🧴 Isopropyl alcohol (90%+) — glue-cleaner.
- 📌 Tweezers - to work with plumes.
- 🔋 Battery (optional) – if your battery is swollen, it is better to replace it at the same time.
How do you replace the thermophene?
Also prepare the workplace:
- 🪑 Work at a table with good lighting.
- 📱 Put soft cloth under your smartphone (for example, microfiber) so as not to scratch the body.
- 🔌 Turn off the power and remove SIM-memory-card.
⚠️ Warning: Do not use metal blades, they can damage the plumes or body. If the plastic blade does not fit the lid, heat the glue again.
Step-by-step: how to disassemble Redmi Note 4X replace the touchscreen
The replacement process consists of 5 steps. Follow the instructions strictly in order to avoid missing important details.
Turn off the phone and remove it. SIM-map|
Take a picture of the back cover (useful when assembling)|
Prepare tools and a new touchscreen|
Wear an antistatic bracelet (optional)
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Step 1: Removing the back cover
1. Turn off your smartphone and remove the tray for SIM-map.
2. Heat the back cover around the perimeter for 2-3 minutes. Start at the bottom edge (where the charging connector is).
3. Insert a plastic blade into the gap between the lid and the case at the USB-Type C connector and carefully lead along the edge. The lid is held on the latches - do not make excessive efforts!
4. When you take the lid off, put it aside. Underneath it, you'll see:
- Battery with duct tape.
- Camera module and fingerprint scanner.
- Trail touchscreen (right, under the metal plate).
Step 2: Shutting off the battery
1. Unscrew 4 screws that fix the metal plate over the battery plume (use a screwdriver). PH00).
2. Carefully tuck the battery plume with a plastic blade and disconnect it from the motherboard. This is a must-do step - if you don't turn off the power, you can burn the board when working with other plumes!
3. If the battery is swelling, do not try to remove it by force - it is better to replace it with a new one (cost: 800-1 200 rubles).
Step 3: Removing the old touchscreen
1. Heat the front of the smartphone (from the screen side) with a dryer for 3-5 minutes. Keep the dryer at a distance of 5-7 cm so as not to overheat.
2. Stick the suction cup to the bottom of the screen (above the Home button) and pull up. If the screen doesn't respond, heat up again.
3. Insert a plastic blade into the resulting gap and slowly lead it along the edge, separating the touchscreen from the body. Be careful - there are plumes under the screen!
4. When the screen is separated, put it face down. Unscrew 2 screws that fix the metal plate above the plume of the touchscreen, and gently disconnect the plume (it is attached to the top). ZIF-connector – lift the black latch up).
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Don't pull the plume of the touchscreen, it's fragile! Always prick it from the side with a plastic spatula, not tweezers.
Step 4: Install a new touchscreen
1. Take the protective film off the inside of the new touchscreen. Notice the location of the holes under the speaker and the camera, they should match.
2. Carefully attach the new screen to the body and make sure all connectors match. Don't glue it right away!
3. Connect the touchscreen plume to the motherboard (click on) ZIF-connector down) and temporarily connect the battery.
4. Turn on the phone and check the screen performance:
- Does it respond to touches in all areas?
- Are there no dead pixels or color spots?
- Is the color displayed correctly (compare with another device)
5 If everything works, disconnect the battery, apply a new double-sided tape to the frame of the case (comes with a touchscreen) and glue the screen, evenly pressing it.
Step 5: Final Assembly
1. Connect the battery plume and fix it with a metal plate (twistle the screws).
2. Install the back cover starting at the top edge. Make sure all latches are in place -- if the lid is walking, heat it with a hair dryer and press it harder.
3. Turn on your smartphone and check the sensor again. If there is a problem (for example, part of the screen is not working), disassemble the device and reconnect the plume.
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After the touchscreen is replaced, you may need to calibrate. → Additionally. → Screen calibration (if no point is available, use the Touchscreen Calibration app from the Play Market).
Common Mistakes and How to Avoid Them
Even with care, you can make mistakes that will cause the screen or other components to fail, and these are the most common ones.
- 🔌 Battery plume damage - if you don't turn off the power before work, a short circuit can disable the motherboard!
- 🔥 Screen overheating - if you hold the hair dryer too close, you can melt plumes or oleophobic coating. Optimal temperature: 60-80°C.
- 🧲 Loss of screws in Redmi Note 4X They use screws of different lengths, and if you mix them up, you can damage the board!
- 📱 Incomplete screen separation - if you pull too hard, you can tear the plume of the touchscreen. Always use plastic blades and heat.
- 🎨 Incorrect installation of a new touchscreen – if the screen is glued curved, “waves” may appear when pressed or non-working zones.
If the screen does not work after replacement:
- Check if the plume is sitting tight in the connector.
- Make sure the connector is not damaged (no bent contacts).
- Try connecting the old touchscreen – if it works, the problem is in the new part.
⚠️ Warning: If the phone doesn't turn on after assembly, but vibrates when you press the power button, it's likely that the power plume or battery contacts are damaged.
Cost of repair: comparison with the service center
It's cheaper to replace a touchscreen on your own, but it takes time and care. The table below is a cost comparison.
| Repair option | Cost, ₽ | Time. | Pluses | Cons |
|---|---|---|---|---|
| Independently (original touchscreen) | 3 500–5 000 | 1.5 hours to 3 hours | Savings, experience in repair | Risk of error, no guarantee |
| Self-contained (analogue of premium) | 1 800–2 500 | 1.5 hours to 3 hours | Low price, good quality | There may be nuances with color rendering |
| Service centre (original) | 4 500–6 000 | 1-2 days | Guarantee, professional work | Dear, turn. |
| Service centre (analogue) | 2 500–3 500 | 1-2 days | Guarantee, quick. | The price is higher than with a self-replacement |
It is most profitable to buy a premium touchscreen (for example, BOE) You can save up to 3,000 rubles, but if you've never taken a smartphone apart, you'd better go to the service, because mistakes in the first repair can cost you more.