Xiaomi Redmi 4X (The codename santoni remains a popular budget smartphone years after its release, but its main vulnerability is a fragile screen that often cracks when falling, replacing the display at the service center costs 3-5 thousand dollars. If you have the tools and patience, you can save up to 70% by doing the repair yourself.
This article provides detailed instructions with photos of each stage, a list of tools you need, tips for choosing the original or analog screen, and common errors that lead to a broken touchscreen or backlight. 4X, including the features of connectors and mounts that distinguish it from other Xiaomi smartphones.
If you've never taken a phone apart, don't worry: the santoni is simpler than the flagships, and the risk of damage to the board is minimal if you're careful, and the key is to follow a step-by-step guide and not miss the critical moments marked by warnings.
1. Diagnosis of malfunction: is the screen really to blame?
Before you buy a new display, make sure it's the problem. 4X The symptoms of a screen breakdown are often confused with a plume or motherboard malfunction:
- 🔍 Cracks or broken pixels are a clear sign of physical damage to the screen, but if the touchscreen is not responsive to touch, the problem may be the plume.
- 💡 Does the backlight not turn on, but the image is barely visible in bright light? is either the screen or the backlight inverter to blame (at Redmi) 4X It's built into the display module).
- 🔄 The screen flickers or spontaneously turns off -- check the density of the plume to the plug on the board. Sometimes it's enough to reconnect it.
- 🛑 The phone doesn’t turn on at all – check charging first (plug in to the RAM for 10 minutes), then try clamping down the Power + Volume Up for Forced Reboot.
If you're sure the screen is to blame after the diagnosis, you can switch to a replacement. 4X The display and touchscreen are a single module (OGS-Technology, therefore, must be changed together.
⚠️ Warning: If the phone overheats or discharges quickly after a fall, the fault may be in the battery or the board!
2. Display selection: original vs analogues, where to buy
On the Redmi. 4X There are three types of screens: original (with the Xiaomi logo), OEM-Copies (made in the same factory but without a brand) and counterparts (cheap replicas) are the difference between price, quality of color reproduction and durability.
| Screen type | Price (2026) | Pluses | Cons |
|---|---|---|---|
| Original. | 2 500–3 500 ₽ | Perfect color reproduction, full compatibility, long service life | Expensive, hard to find in stock |
| OEM-copy | 1 800–2 500 ₽ | Quality is almost like the original, more accessible | You may get broken parties. |
| Analogue (A)+) | 1 200–1 800 ₽ | Low price, quick delivery | Worse color reproduction, possible "dead" pixels |
| Analogue (B/C) | 800–1 200 ₽ | The most budgetary option | High risk of marriage, dim lighting, poor touch screen |
Where to buy:
- 🛒 AliExpress is cheap, but it's a long delivery time (2-4 weeks), and look for sellers with a rating above 98% and reviews in the photo.
- 🏬 Local parts stores (for example, Fix-Price, Repair Goods) are faster, but prices are higher by 20-30%.
- 🌍 Foreign websites like eBay or Amazon – original and OEM at reasonable prices, but with customs risks.
When buying, check:
- 📋 Compatible with the model: the screen should be for Redmi 4X (The Redmi's. 4/4A/4 Pro different displays!
- 🔧 Set: the set should be the screen itself, the plume (if not soldered), the frame and protective film.
- 📦 Packaging: originals and OEM They come in antistatic packages with a protective film on the matrix.
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Before buying, ask the seller to send a photo of the screen with the backlight turned on (if possible), which will help to assess the quality of color reproduction and the absence of broken pixels.
3. Necessary Tools: What to Buy in Advance
To replace the screen with Redmi 4X You'll need a minimum set of tools, but you can't repair them without them:
- 🔧 Plastic blades (mediators) - for careful tweaking of the body. It is better to take a set of 3-5 pieces of different thicknesses.
- ⚙️ Screwdriver cross (PH00) — for the screws on the back cover. 4X type-screw Y000.
- 🔥 A hair dryer or a thermo-air station to soften the glue around the perimeter of the screen, a temperature-adjusted household hair dryer will do (maximum 80).°C).
- 🧲 Magnetic mat or organizer – so as not to lose screws and small details.
- 📱 Screen suction cup – helps to gently lift the display after heating.
- 🔌 Tweezers – for working with plumes and small connectors.
- 🧴 Isopropyl alcohol (90%+) — glue-cleaner.
- 🎨 Double-sided tape or glue B-7000 — fixate.
The cost of a full set is about 1,000-1,500 rubles. If you plan to repair the equipment further, the investment will pay off quickly. For a one-time replacement, you can do with a minimum set of shoulder blades, a screwdriver, a hairdryer and a sucker.
⚠️ Warning: Don't use metal blades or knives - they will scratch the body and can damage plumes! plastic mediators cost pennies but will save your phone.
Turn off the phone and remove it. SIM-map|Charge the battery by 30-50% (to avoid deep discharge)|Prepare a clean, well-lit workplace|Take a picture of the original condition of the phone (for warranty disputes)|Check for all the tools on the list-->
4. Step-by-step instruction: disassembly and replacement of the screen
Now, to the most critical stage, follow the instructions in strict order, without missing steps, and the average replacement time is 1-1.5 hours for beginners.
Step 1: Removing the back cover
1. Turn off the phone and remove the tray for SIM-map.
2. heat the tail dryer edge of the back cover (30-40 seconds in each section) The glue will become softer and the cover will be removed more easily.
3. Insert a plastic blade into the gap between the lid and the body (start at the bottom edge where the charging connector is). Carefully drive the blade around the perimeter, separating the latches.
4. Remove the lid and put it aside. Be careful, it's mounted on latches that are easy to break!
Step 2: Shutting off the battery
1 Unscrew 8 screws that fix the metal plate over the battery (use the PH00 screwdriver).
2. Gently slap the plate with a spatula and remove it.
3. Disconnect the battery connector with tweezers or a spatula. This is a must-do step - if you don't turn off the battery, you risk burning the board when working with plumes!
Step 3: Dismantling the Old Screen
1. Heat the screen around the perimeter with a hair dryer (keep the hair dryer 5-7 cm away so you don't overheat). The glue under the display will soften in 2-3 minutes.
2. Stick the suction cup to the bottom of the screen (where the Home button is) and pull up. If the screen fails, repeat heating.
3. Insert a plastic blade into the resulting gap and slowly move it around the edges, separating the screen from the body. Be careful - there are plumes under the screen!
4. When the screen rises by 1-2 cm, disconnect the display plume and touchscreen from the motherboard (they are located at the top of the phone).
Step 4: Install a new screen
1. Remove the protective film from the new screen and check the integrity of the plumes.
2. Connect the new display plumes to the connectors on the board. Make sure the connectors are firmly seated - if they are not fully inserted, the screen will not work!
3.Aply a thin layer of glue B-7000 Or double-sided tape around the perimeter of the case (where the screen will be attached), don't overdo it, excess glue can get on the plumes.
4 Carefully press the new screen against the body, starting at the top. Make sure it lies flat, without skewing.
Step 5: Assembly of the phone
1. Connect the battery and check the health of the new screen (turn on the phone, check the touchscreen and backlight).
2 If everything works, disconnect the battery back and secure the metal plate with screws.
3. Place the back cover in place by snapping it around the perimeter, warm up the edges with a hair dryer if necessary for better fixation.
4. Turn on the phone and test all the functions: sensor, brightness, autorotation, camera (sometimes after changing the screen, sensor settings are confused).
1) The density of the connectors (sometimes they "go away" during assembly).
(2) Integrity of plumes (whether there are cracks or breaks).
3) Correct connection (display plume and touch screen cannot be confused!).-->
5 Common Mistakes and How to Avoid Them
Even with careful work, beginners often make mistakes that lead to additional costs. TOP-5 Problems with replacing the screen with Redmi 4X and ways to prevent them:
- 🔌 A broken touchscreen after replacement is usually caused by a misconnection of the plume or damage to it.
- 💡 A dim or flickering backlight is a sign of poor contact in the backlight connector or a defective screen. Try reconnecting the plume or replacing the display as warranty.
- 🔋 The phone doesn't turn on after assembly -- probably forgot to plug in the battery or damaged the board when disassembling.
- 📶 The antennas are not working (there is no network) - when assembled, they did not tightly attach a metal plate over the battery, which serves as an antenna.
- 🎨 The colors on the screen are distorted — cheap counterparts often have poor color reproduction. There is no solution but to buy a better screen.
If the screen is working after the replacement, but new problems have appeared (for example, spontaneous pressing or "spots" on the display), the defective module is most likely to be to blame. In this case, contact the seller for a replacement - most stores give a 1-3 month warranty on the displays.
⚠️ Warning: If you accidentally damage your battery plume or display during disassembly, don't try to repair it with a soldering iron! 4X The plumes are multi-core and thin, almost impossible to restore at home. Better order a new plume (costs about 300-500). ₽).
Testing and calibration after replacement
Have you successfully replaced the screen? Don't be too excited, you need to check all the functions of the phone.
- 📱 Touchscreen: swipe across the screen, check the multi-touch (two fingers at once).Use the Play Market's Touch Screen Test app.
- 🔦 Brightness and backlight: set maximum and minimum brightness, check the uniformity of the backlight (are there any dark spots).
- 🔄 Autoturn: Turn on the feature in the settings and turn the phone – the screen must respond.
- 📷 Camera: Take a picture on the main and front cameras, and sometimes when you change the screen, the sensor settings get confused, and the camera gives you an error.
- 🎵 Speakers and microphone: call another phone and check the sound.
- 📶 Network and Wi-Fi: Make sure your phone catches the network and connects to the internet.
If you find a problem, don't panic, and 80 percent of the time, it's software calibration.
- Reset your phone to factory settings (Settings → Additional → Restore and Reset).
- Update your firmware to the latest version via Settings → About Phone → System Update.
- If the touchscreen is floating, install the Touchscreen Calibration app and calibrate.
If the software methods do not help, take the phone apart again and check:
- The density of the plumes attached to the connectors.
- Integrity of contacts on board (whether they rotted from overheating during soldering)
- Screen model matching (sometimes sellers send displays from Redmi) 4A, which are similar in appearance but not compatible).
What if the screen is working after the replacement, but horizontal bands appear?
7. How much does it cost to replace the service vs independently
The price of screen replacement on Redmi 4X The service centers vary by region and type of display. Here's the current 2026 price tag:
| Type of repair | Cost (₽) | Timeline | Guarantee |
|---|---|---|---|
| Replacement by analogue (A)+) | 2 500–3 500 | 1-2 hours | 1-3 months |
| Replacement OEM-copy | 3 500–4 500 | 1-3 hours | 3–6 months |
| Replacement with original | 5 000–7 000 | 2-4 hours | 6–12 months |
| Self-sustaining replacement | 1,200–2,500 (screen cost) | 1-2 hours | Depends on the screen seller |
Savings on self-repair are obvious, up to 50-70%, but keep in mind:
- ⏳ Time: If you have never repaired your phones, the process can take 3-4 hours.
- 🔧 Risks: with careless disassembly, you can damage the plumes, board or battery, which will increase the cost of repairs.
- 📦 Guarantee: service centers give a guarantee for work, and if you replace yourself, you risk being left without it.
Is it worth repairing Redmi? 4X If the phone is used as a spare phone or for simple tasks (calls, instant messengers), then yes. But if it already slows down or discharges in half a day, maybe you should consider buying a new smartphone — for example, Redmi. 12C or POCO M6, which cost from 8-10 thousand rubles.