Broken screen on Xiaomi Redmi 4X — It's not a smartphone sentence, and if you do it right, you can replace it yourself, saving you up to 70 percent of the cost of repairs at the service center, and this model, launched in 2017, is still popular today because of its robust filling and affordable parts prices. However, the process of replacing the display has nuances: from the choice of a quality module to careful work with plumes and adhesive layer.
In this article, you will find step-by-step instructions with a photo, tips on choosing the original or analog screen, as well as answers to frequent questions: what to do if the touchscreen does not work after replacing, how to calibrate the new display and what tools are really needed, and we will also analyze the typical errors that cause the smartphone to stop turning on after repair.
If you've never taken phones apart, don't worry. - Redmi 4X It's a simpler design, where the screen is not glued to the body, unlike the bezel-less flagships, which means that the risk of damage to other components is minimal.
Diagnosis of damage: should the screen be changed?
Before you buy a new display, make sure it's the problem. - Xiaomi Redmi 4X There are three types of injuries most often:
- 💥 Cracks on glass – if the sensor works, and the image is displayed normally, you can do with replacing only glass (cheaper on the screen). 30-40%).
- 🖥️ Artifacts on the screen (strips, flickering, broken pixels) are a sign of damage to the matrix.
- 👆 The touchscreen does not work – if there is an image, but the sensor does not respond, either the plume or the touch controller is to blame (in 80% of cases, replacing the display module helps).
Do a quick test: connect your phone to your computer or TV through a USB-OTG or HDMI-If the outside screen is normal, the problem is the display. If the artifacts are repeated, the motherboard may be damaged.
⚠️ Attention: On Redmi 4X The motherboard's plume connector often breaks due to oxidation. If the display is replaced, the image flashes or disappears when you press the body, check the contacts of the connector with alcohol and a magnifying glass.
Another important point is that if the phone falls into the water, even after changing the screen, there may be problems with the microphone, speaker or battery, in which case it is better to take the device to the service for a full diagnosis.
2. Selection of a new screen: original vs. analogues
At Xiaomi Redmi. 4X displays with resolution are installed 720×1280 (HD) diagonally 5 When buying a replacement, pay attention to the:
- 📱 Type of module: Original (OEM) — removed from other Redmis 4X, It is a good fit, but expensive (from 2500 ₽). Aftermarket (Replica) – cheaper (1200-1800 ₽), But it can have a lower color reproduction or a lower viewing angle. + New glass, gold standard in price/quality ratio (1800-2200 ₽).
- 🔧 Package: the kit must have adhesive tape for fixation and a protective film.
- 🛡️ Protection: Some modules already have Gorilla Glass 3 glued glass (check with the seller).
| Screen type | Price (₽) | Pluses | Cons |
|---|---|---|---|
| Original (OEM) | 2500-3500 | 100% compatibility, original color reproduction | Expensive, hard to find a new one. |
| Team (matrix) + glass) | 1800-2200 | Quality as the original, more accessible | Maybe there's no factory film. |
| Copy (Aftermarket) | 1200-1800 | Low price, quick delivery | Worse brightness, broken pixels are possible |
Where to buy? There are reliable options.
- 🛒 AliExpress is cheaper, but delivery 2-4 Look for sellers with higher ratings. 98% photo-reviewed.
- 🏬 Local parts stores are more expensive, but you can check before buying. In Moscow, we recommend Chip and Deep or Mobile Driver".
- 🌍 eBay – sometimes come across original modules from disassembly.
⚠️ Attention: On Redmi 4X There are two screen revisions: the santoni (most models) and santoni_pro (They look identical, but they have different plumes! → The phone. → If you buy the wrong one, the screen won't connect.
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Before you buy, ask the seller to send a photo of the screen plume, which should be black with gold contacts on the original module, and copies often gray or green.
3. Necessary Tools: What to Buy in Advance
To replace the screen on Xiaomi Redmi 4X you will need a minimum set of tools, but you should not save on quality - cheap plastic blades break and scratch the body.
- 🔧 Screwdrivers: Phillips PH00 — hull-rotor. T3 and T5 (Stars - for fastening the motherboard (if you need to remove it).
- 📱 Plastic blades/mediators to disengage the body. Better to take a set with different thicknesses (0.1-0.3 mm).
- 🔥 Hair dryer or thermo-air station - for softening the glue (temperature) 60-80°C).
- 🧲 Magnetic mat or tray - so as not to lose screws.
- 🧴 Isopropyl alcohol (90%+) — clean-up.
- 📏 Suction cups (2 (S) - for screen removal (diameter) 3-5 centimeter).
- 🔋 Battery battery (3.7V) — screen-testing before assembly.
The cost of a full set - about 1000-1500 ₽. If you plan to repair equipment and continue, take a set for repairing smartphones (for example, Xiaomi Mi Repair Toolkit on AliExpress).
☑️ Preparation of the workplace
Don't forget about the spare parts:
- 🔄 Clay. B-7000 double-scotch 3M 9448A — fixate.
- 🔌 Charging plume - often breaks when disassembling (price) ~300 ₽).
- 🔊 Speaker and microphone – glued to the screen frame, can be damaged when removed.
Step-by-step instructions: how to disassemble the phone and replace the screen
The whole process will take 1.5-2 The rule of thumb is, don't force it -- if something doesn't detach, you miss the screw or you don't warm up the glue.
Step 1: Turn off and prepare
Turn off the phone, get the tray out for you. SIM-Warm up the screen edge with a hair dryer around the perimeter during 2-3 minutes (keep at a distance) 5 It's going to soften the glue.
Step 2. Remove the back cover
Suction cups lift the screen from the bottom edge (where the charging connector is), insert a plastic blade into the slot and carefully guide along the case, separating the glue. Be careful around the volume buttons - there are plumes!
On the Redmi. 4X The battery plume is glued to the lid - do not pull too much, otherwise you will tear off.
Step 3: Battery disconnection
Unscrew the 4 screws that lock the metal plate over the battery. JST-connector (use a shoulder blade, do not pull the wires!).
How do you unplug the glued plume?
Step 4: Screen removal
Unscrew the 6 screws around the perimeter of the screen (they are different sizes — remember the location!) Disconnect the plumes of the display and touch screen (they are fixed by the latches — lift them up).
Step 5: Install a new screen
Move to the new module:
- 🔊 Speaker and microphone (stick on bilateral tape).
- 📞 The tail of the front camera and the proximity sensor.
- 🔋 Notification LED (if any).
Connect the plumes, lock them with latches, make sure the contacts are not bent.
Step 6.
Smear the phone frame with a thin layer of glue B-7000 Or put two-sided tape on it. Set the screen, press it down and record it with tape for 10 minutes. Put the phone back together.
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Don't turn on the phone right after assembly! 1-2 For an hour, the screen may move away.
5. Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when replacing the screen with Redmi. 4X. Here are the most common:
- ⚡ Short circuit: If you forget to disconnect the battery before work, symptoms: the phone doesn't turn on, it warms. Solution: check the fuses on the motherboard (they can be replaced with a soldering iron).
- 🖥️ White screen after replacement - usually bad contact of the plume is to blame.
- 👆 The touchscreen does not work - perhaps the plume is damaged or the connector is not connected FPC (squishy).
- 🔊 No sound – forgot to connect the speaker plume or damaged it when removing the old screen.
Another common problem is the poor sensitivity of the touchscreen after replacement, and this is treated by calibration.
- Install the Touchscreen Calibration app from Google Play.
- Run the test and follow the instructions on the screen.
- If it doesn’t help, update the firmware via Fastboot (instruction below).
⚠️ Warning: If the screen flashes after the replacement or buttons are spontaneously pressed, chances are you bought an incompatible module. 4X firmware MIUI 12+ Screens may not work without the original Synaptics controller.
Screen calibration and post-replacement check
After successful screen replacement, you must:
- Check the color reproduction - compare with another Redmi 4X Or use test pictures (like gradients) that are often over-saturated.
- Test the touchscreen – use the Touch Screen Test app or enter the code ##6484## in the dialer for the built-in test.
- Calibrate the proximity sensor – if the screen does not go out during the call, follow: → System applications → Phone. → A challenge → Approximation sensor → Sizing
If the image is blurry or there are artifacts, try updating the firmware:
- Download the latest version MIUI for Redmi 4X Xiaomi.
- Switch through Fastboot (instruction: Settings) → The phone. → Updating the system → Three points. → Select a firmware file).
If you change the screen, but you get stripes when you tilt, it's a matrix defect. Return the module to the seller under warranty.
7. Alternative ways: when you should not change yourself
It is not always justified to replace the screen with your own hands.
- 💻 Phone doesn't turn on after falling - motherboard may have been damaged.
- 🔧 You have no experience with electronics – the risk of damaging plumes or contacts.
- 🕒 Need urgently - in the service will replace the screen for 30-60 minute.
- 💰 You have found a profitable offer – sometimes repairs in the service are cheaper than buying tools.
The average cost of replacing the screen in the service:
| Screen type | Price (₽) | Time (hours) |
|---|---|---|
| Original. | 3500-4500 | 1-2 |
| Team | 2500-3500 | 1 |
| Copy | 1800-2500 | 1 |
In Moscow we recommend services:
- FixPrice is a 6-month warranty, using original spare parts.
- Re:Store – specialize in Xiaomi, there is an urgent repair.
- “iFix” is inexpensive, but check the reviews for a specific wizard.