Introduction: when you need a touch screen replacement and what awaits you
Touch screen Xiaomi Redmi 4X — One of the most vulnerable parts of a smartphone: falling on asphalt, hitting a hard surface, or even pressing hard can lead to cracks, dead zones, or a complete failure of the touchscreen. If your display reacts to late touch, shows “ghost” touches or completely stopped working – most likely, a replacement of the touch module is required.
The service center will charge from 2,500 to 5,000 rubles (depending on the region and the status of the workshop), but with patience and minimal skills in electronic repair, you can save and replace the touchscreen yourself. from the selection of spare parts to the final testing - taking into account the design features of Redmi 4X (A model codenamed santoni, where the touchscreen is glued to a matrix rather than being a separate module.
If you have a Redmi 4 Pro or Redmi 4A — These models have a different design of the display module, make sure that the back cover of your smartphone is Redmi. 4X.
Diagnosis of malfunction: is it really the fault of the touchscreen?
Before you order a new screen, make sure that the problem is in it.
- 🔍 The screen does not respond to touch at all (but the image is still there).
- 🖱️ The cursor “lives his life” – spontaneous taps, swipes.
- 🧩 Part of the screen is not working (for example, the lower right corner is not pressed).
- 🔄 The sensor only works after multiple clicks.
But similar symptoms can cause other problems:
- 🔋 Discharged battery (at a charge level below 5% touchscreen can glitch).
- 📱 Damaged display plume (often after falls).
- 🦠 Software failure (solved by resetting to factory settings).
- 🌡️ Overheating or moisture (check the moisture indicator under the lid) SIM-map).
To rule out programmatic reasons, perform a hard reset:
- Turn off your smartphone.
- Press Volume Up + Power for 10 seconds.
- From the Recovery menu, select Wipe Data → Wipe All Data.
⚠️ Attention: if after reset touchscreen worked - the problem was in the software. If not, prepare for the replacement of iron.
Selection of spare parts: original vs. analog
The quality of the touchscreen not only affects the tactile return, but also the life of the smartphone. 4X Three types of screens are available:
| Screen type | Price (2026) | Pluses | Cons |
|---|---|---|---|
| Original (OEM) | 3 500–4 500 ₽ | Perfect color reproduction, full compatibility, long service life | Expensive, hard to find in stock |
| Copy (A+) | 1 800–2 500 ₽ | Good quality, affordable price, often with already pasted scotch | It can be worse color reproduction, it is possible to “dead” pixels |
| Budget analogue (A-) | 1 200–1 800 ₽ | Cheap, fast delivery. | Poor sensitivity, distorted colors, short service life |
Where to buy:
- 🛒 AliExpress is cheap, but it's a long wait (3-4 weeks) and look for sellers with a rating above 98%.
- 🏬 Local parts stores are faster but more expensive.
- 🔧 Service centers – sometimes sell used originals after replacement.
⚠️ Note: when buying, check whether there is a double-sided tape for gluing the screen and glue B-7000 If not, buy it separately.
Check compatibility: For Xiaomi Redmi should be indicated on the box or in the description 4X (santoni) + permit 720×1280 (HD). Screens from Redmi 4/4A/4 Pro's not gonna work!
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Before you buy, ask the seller to send you a video of the touch screen test (touch response, no broken pixels) that will save you nerves when disassembling.
Tools required: what to prepare in advance
To replace the touchscreen with Redmi 4X You'll need it:
Screwdriver cross (PH00)
Plastic mediators (2-3 units)
Screen suction cup (∅ 5-7 cm)
Dryer or thermo-air station (power 300-500 W)
Tweezers (thin, curved)
Scalpel or stationery knife
Double-sided Scotch (thickness 0.1–0.15 mm)
B-7000 or similar adhesive
Antistatic bracelet (optional)
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Where to buy tools:
- 🔧 Kit for repairing smartphones on AliExpress (costs 300-800) ₽).
- 🛠️ In radio stores (for example, Chip and Deep»).
- 📦 Order separately on Ozon or Wildberries.
Prepare the workplace:
- 🪑 Clean table with good lighting.
- 🧹 Wormless napkin (for cleaning the screen).
- 📦 Containers for screws (so as not to confuse).
- 🔌 Rosette near (for hair dryer).
Important: Wash your hands often or wear gloves – the greasy prints on the inside of the screen will be visible when turned on!
Step-by-step: disassembly and replacement of the touch screen
The replacement process will take 1.5-3 hours (depending on experience) and follow the instructions in strict order:
Step 1: Turn off and warm up your smartphone
1. Turn off Redmi. 4X and extract SIM-map + memory-card.
2. heat the hair dryer back cover around the perimeter for 2-3 minutes (temperature 60-70)°C. This will soften the glue.
Don't overheat! If the body gets hot to the touch, pause.
Step 2: Removal of the back cover
1. Insert a plastic mediator into the gap between the lid and the body (start at the lower corner where the charging connector is).
2. Carefully drive the mediator around the perimeter, separating the lid. If you feel resistance, warm up the place again with a hairdryer.
3. Remove the lid and put it aside.
⚠️ Attention: under the lid are flexible plumes of the fingerprint scanner and antenna. Don't pull the lid sharply, you can tear them off!
Step 3: Shutting off the battery
1 Unscrew 4 screws that fix the metal plate above the battery.
2. gently dent the battery plume and disconnect it from the motherboard (use a plastic mediator).
It's a must-do! It's dangerous to run a connected battery, and it's a risk of short circuit.
Step 4: Removal of the display module
1. warm up the hair dryer front of the smartphone (from the screen) for 3-5 minutes.
2. With a suction cup, raise the screen by 1-2 mm (do not pull too much!).
3. Put the mediators in the gap and slowly separate the touchscreen from the body. Start at the bottom edge.
4. Once the screen is separated, gently turn it over and disconnect the plumes:
- Trail of touchscreen (thin, with gold contacts).
- Display plume (wide, white).
Attention, Redmi! 4X The touchscreen and the matrix are glued together. If you see cracks only on the sensor, but the matrix is intact, you can only replace the top layer (but it is more complicated and expensive). 90% of the time, you change the entire display module.
Step 5: Install a new screen
1. Take the protective film off the new touchscreen.
2. glue bilateral tape around the perimeter of the case (where the old screen was).
3. Connect the new screen plumes to the motherboard (first display, then touch screen).
4. Lay the screen in place, press and warm up with a hair dryer for 1-2 minutes for better gluing.
Step 6: Assembly and testing
1. Connect the battery and turn on the smartphone.
2. Check:
- 🎨 Color rendering (whether there are yellow or stains).
- 👆 Reaction to touches across the screen.
- 🔋 Charge level (must be displayed correctly).
3. If everything works, assemble the body in reverse order.
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On the Redmi. 4X When you change the screen, you may lose the sensor calibration. → Additionally. → Screen calibration (if no point is available, install the Touchscreen Calibration app from the Play Market).
Common Mistakes and How to Avoid Them
Even with careful work, you can make mistakes that will lead to new problems.
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Dryer overheating | Melting plastic clips, detachment of plumes | Keep the hair dryer at a distance of 5-10 cm, use a minimum temperature. |
| Sharp separation of the screen | Train rupture, cracks in the matrix | Use several mediators, warm up the glue in parts |
| Dust hitting the screen | Visible points, distortion of the image | Work in a clean room, use an antistatic bracelet |
| Incorrect connection of plumes | The screen does not turn on or works with artifacts. | Check the compliance of connectors (the plumes have markings) |
If, after assembly, the screen:
- 🔥 Overheating. → Check if the sleeves are closed.
- 🎭 Shimmering. → Maybe there's a bad contact in the display connector.
- 👻 He doesn't respond to touch. → reconnect the touchscreen plume.
Don't be afraid to double-check every step. It's better to spend an extra 10 minutes than disassembling the smartphone again.
What if the screen does not turn on after replacement?
Should I repair it myself or give it to the service?
Let’s consider how much it costs to replace yourself:
| Item of expenditure | Cost (₽) |
|---|---|
| Screen (copy A)+) | 1 800–2 500 |
| Tools (if not) | 500–800 |
| Double-sided Scotch + glue | 200–300 |
| Totally. | 2 500–3 600 |
For comparison: in the service for a replacement will take 3,000-5000 ₽ (There are benefits, but they don't always justify the risks:
Self-repair is suitable if:
- ✅ You already have experience disassembling equipment (for example, cleaned your laptop from dust).
- ✅ You are ready to spend 2-3 hours and do not rush.
- ✅ Find a quality spare part with a guarantee.
It is better to give to the service if:
- ❌ Redmi 4X — Your primary (and only) phone number.
- ❌ You have never held a soldering iron or screwdriver in your hands.
- ❌ Not sure about the diagnosis (maybe the problem is not in the screen).
Compromise: buy the spare part yourself (it is cheaper on AliExpress), and order a replacement in the service. ₽.