Cracked or broken display on Xiaomi Redmi 4X — The problem that many owners of this budget smartphone face, the model released in 2017, is still popular due to its reliability and low cost of spare parts, but replacing the screen is a task that requires accuracy and knowledge of nuances. from choosing the right display module to the subtleties of disassembling the case with glue fixation.
In this article, you will find detailed instructions with photos of key stages, a list of necessary tools and tips on how to avoid typical errors. 4X (including options with and without sensors, how much does it cost to repair the service vs self-replacement, and what to do if after installing a new screen there are "glitches" of the sensor or backlight.
⚠️ Attention: Redmi 4X (codename santoni has two modifications of the screen - with a connector ZIF (flexible plume) and FPC (Before buying a module, check what type is installed in your device, otherwise the new display may not connect!
Why the Redmi Display Breaks 4X And when it's worth changing.
Xiaomi Redmi screen 4X Most often it fails for three reasons: mechanical damage (falls, impacts), factory failure of the plume or wear after prolonged use:
- 💥 Cracks or chips on the glass (even without disturbing the sensor).
- 🔄 Spontaneous tapping or “floating” the screen when touching.
- 🌑 Black screen with working backlight (visible image at an angle).
- 🔦 Stripes, artifacts or flickering - a sign of damage to the matrix or plume.
If the display is touch-responsive, but the image is missing, the problem may be a disconnected plume or a motherboard malfunction, in which case replacing the module will not help, you need a diagnosis at the service center, but if you physically damage the glass or matrix, replacing the display module by 90% solves the problem if all the contacts are connected correctly.
Should the Redmi be repaired? 4X Given that the new smartphone will cost 3-5 times more expensive repair (module price - from 1,500 to 3,000 rubles), replacing the screen is justified if the device is not replaced:
- 📱 The device is used as a spare or for specific tasks (navigator, IP-camera).
- 💰 Budget is limited and the phone is functional.
- 🔧 Have experience in electronics repair or a desire to learn.
What Display Module to Choose for Redmi 4X
There are three types of modules for Redmi 4X:
- Original (OEM) — Pros: 100% compatibility, original color quality. Cons: high price (from 2,500 rubles), limited amount.
- High quality copies (e.g. from JDI The only difference from the original is the manufacturer's logo on the plume. Price: 1,800-2,200 rubles.
- Budget replicas (Chinese no-name) are cheaper (1,200-1,600 rubles), but may have problems with color reproduction, brightness or sensor sensitivity.
When choosing, pay attention to:
- 🔌 Type of connector: ZIF (latched or FPC (You can recognize it by taking apart the phone or by looking at the markings on the old module.
- 📏 Diagonal size: 5 resolution 720×1280 (HD).
- 🔄 There's a touch layer. Some of the modules are sold without touch screens, and you can't buy them because you have a separate sensor replacement with a Redmi. 4X hard-working.
| Characteristics | Original module | Quality copy | Budgetary cue |
|---|---|---|---|
| Price, ₽ | 2 500–3 500 | 1 800–2 200 | 1 200–1 600 |
| Color rendering | Perfect. | Close to the original | It could be cold/warm. |
| Sensor sensitivity | 100% | 95–98% | 80–90% (possible false positives) |
| Term of service | 3-5 years | 2–4 years | 1-2 years |
Where to buy? Proven sites:
- 🛒 AliExpress (stores with a rating above 98% and reviews about compatibility with santoni).
- 🏬 Local service centers (often sell modules in bulk).
- 🌍 eBay or Amazon – for original parts.
⚠️ Warning: If you buy a module from hand (for example, on Avito), check its operability before payment. connect to the motherboard Redmi 4X And make sure that the image is displayed and the sensor responds to the touch!
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Before buying a module, take a picture of the old display from the plume side - this will help the seller to choose a compatible spare part.
Tools for replacing the Redmi display 4X
For disassembly Xiaomi Redmi 4X You will need to install a new screen:
Plastic blades (mediators) for disengaging the body|Cross screwdriver PH00 screw|Suction cup|Tweezers with curved ends|Hair dryer or thermo-air station (for softening glue)|Isopropyl alcohol (90%+) clean-up|Double-sided tape or glue B-7000 fixing|Antistatic bracelet (optional, but recommended)-->
Why can't we use metal blades? 4X It's made of anodized aluminum that scratches easily. Plastic mediators are safer, but if they're not there, you can wrap a metal blade with a metal scapula with a seal.
Thermo-air station is preferable to the dryer, because it allows point heating of the glue around the perimeter of the screen. The optimal temperature is 60-70°C. Overheating above 80°C may damage the plumes or battery!
If you’re disassembling a smartphone for the first time, practice on a non-working device or watch a video disassembly on YouTube (search for “Redmi” on the phone). 4X display replacement:
- 🔧 The order of spinning screws - their length is different, so fold them in groups.
- 🧲 Magnetic elements (speaker, vibrator) – do not place them near the screwdriver.
- 🔋 Battery - before disassembling be sure to disconnect it from the motherboard!
What happens if you don’t turn off the battery before you disassemble?
Step-by-step: how to disassemble Redmi 4X and take off the old display
The screen replacement process takes 1-1.5 hours if you have experience, and if you are doing it for the first time, be patient and follow the instructions:
Step 1: Turn off and prepare the phone
Turn off Redmi completely. 4X (Press the power button and select "Switch off." SIM-If the battery is swelling, don't disassemble the phone yourself, call the service!
Step 2: Heating the body and removing the back cover
Using a hair dryer or a thermal air station, evenly heat the edge of the screen around the perimeter for 2-3 minutes. Temperature - 60-70°C. Then:
- Suction suctions grab the bottom of the display (near the Home button).
- Carefully pull upwards, creating a gap.
- Insert a plastic blade into the slot and slowly lead it along the body, separating the glue.
If the lid doesn't respond, heat it up again. Don't force it, you can damage the plumes!
Step 3: Turn off the battery and plumes
After the lid is removed:
- Unscrew 4 screws that fix the metal plate over the battery.
- Disconnect the battery connector with a flat spatula (plug it from the side).
- Carefully disable the display and sensor plume (they are located nearby, but have different connectors).
Photos of connectors:
Step 4: Removing the old module and cleaning the case
Remove the old display and remove the glue residue from the frame of the case. Use isopropyl alcohol and a lilac-free wipe. Don't scratch the frame - this will worsen the leakage after assembly.
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The most common mistake in the Redmi disassembly 4X — It's thin and fragile, so turn it off last and only with a plastic tool!
Installation of a new display and assembly of the phone
Before installing the new module, check:
- 🔍 Integrity of plumes on the new screen (whether there are cracks or tears).
- 🧼 Cleanliness of contacts on the motherboard (wipe with alcohol).
- 📏 The matching of connectors (compare with the old module).
Step 1: Connecting the plumes
Carefully connect:
- Sensor plume (top connector marked as TOUCH).
- Display plume (bottom connector, LCD).
- Battery plume (last!).
Make sure all connectors are snapped to the end. ZIF, Raise the locking bar after inserting the plume.
Step 2: Fixing the module
Apply a thin layer of glue B-7000 Or double-sided tape around the frame, press the display from the top and tape it for 10 to 15 minutes (this will prevent displacement).
Step 3: Checking the performance
Connect the battery and turn the phone on until final assembly.
- 📺 Image: Are there any broken pixels, stripes or backlights.
- 👆 Sensor: Does it respond to touches across the screen.
- 🔊 The speaker and microphone: are they not silenced by the new module.
If everything works, unscrew the battery metal plate screws, put it back in place, and twist the lid. Screw the screws cross-over to avoid distortion.
⚠️ Warning: If the phone doesn't turn on after assembly, check: Is the battery connected (charging indicator when connecting the cable), will the plumes be hushed (carefully disassemble and check), are there any foreign objects (screws, glue pieces) left inside? In 80% of cases, the problem lies in a loosely connected plume of the display or battery.
Typical problems after the display replacement and their solutions
Even with a careful replacement, there can be problems.
| Problem. | Possible cause | Decision |
|---|---|---|
| The screen is off. | Unconnected plume of the display or battery | Discuss and verify contacts |
| Sensor's not responding. | A touchscreen plume is damaged or incorrectly connected | Reconnect the plume or replace the module |
| Screen stripes | Damaged matrix or plume during installation | Check the plume on the clutter, if necessary, replace the module |
| Self-pushing | Poor sensor quality (characteristic of budget replicas) | Calibrate the sensor in the settings or replace the module |
| Uneven lighting | Poor plume contact or matrix defect | Reconnect the plume, if it does not help - replace the module |
If the display is working after the replacement, but the colors are distorted (for example, blue or green is predominant), the problem is incompatibility of the module.
- Check if the module is original (the plume should have markings) JDI or Tianma).
- Update your phone’s firmware (sometimes helps reset color reproduction settings).
- In the extreme, replace the module with another.
To calibrate the sensor, go to Settings → System system → Additionally. → Calibrate the screen and follow the instructions. If this item is missing, use the Touchscreen Calibration app from Google Play.
How to check if the original display is installed?
Cost of replacing the Redmi display 4X: self-service vs.
The price of repair depends on the type of module and region. Average prices for 2026:
- 🔧 Self-sustaining replacement:
- 🏢 Service centre:
Is it better to repair yourself? If you already have the tools and experience, yes. Otherwise, the price difference may be small and the risk of damaging your phone is higher. For example, in a service you will be given a guarantee for work (usually 1-3 months), while in self-repair, all the risks are borne by you.
Where to find service?
- 🔍 Official Xiaomi Partners (list on mi.com).
- 🏆 Local workshops with good reviews (check on Yandex.Maps or 2GIS).
- 🛠️ Repair workshops at communication salons (for example, Messenger or MTS).
Before contacting the service:
- Check if they are using original parts or copies.
- Ask about the work warranty and module.
- Check if the price of the diagnosis is included (sometimes it is taken separately).
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If the service offers to replace the display for 1,500-2,000 rubles, most likely, they use a budget replica, such screens often fail after 3-6 months.