Replacement of touchscreen with Xiaomi Redmi 4X: Detailed guide with photos and nuances

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 from a height, hitting or even getting too much pressure can lead to cracks, dead zones, or a complete inoperability of the touchscreen. If your display reacts to late touch, shows “ghost” touches or completely stopped responding – most likely, a replacement of the touch module is required.

The service center will charge from 1,500 to 3,000 rubles (depending on the region and the workshop), but with patience and minimal skills, replace the touchscreen with a Redmi. 4X You can do it yourself, and it saves you up to 70 percent of the cost, and in this article, we're going to go through the whole process, from the selection of the spare parts to the final testing, taking into account the unique features of the Redmi model. 4X (codename santoni, where the touchscreen and display are a single module.

Important: if you only have cracked glass without sensor problems, just replace the protective glass (the procedure is simpler and cheaper), but if the sensor does not respond to touch, doubles or gives false presses, you will have to change the entire module.

How to determine if the touchscreen is defective: symptoms and diagnosis

Before you disassemble the phone, make sure the touchscreen is the problem, not the software failure or plume.

• 🔍 No response to touch (the screen works but does not respond to touch).
• 👻 «Ghostly taps – the phone opens apps or scrolls through menus.
• 🎯 Local dead zones – part of the screen does not respond (for example, only the upper right corner).
• ⚡ Delays in input – letters appear 1-2 seconds after pressing.
• 🔄 Incorrect calibration – cursor is shifted relative to the touch point.

If symptoms occur after a fall or a hit, it's almost certainly the touchscreen's fault, but if the problems occur "on their own," try first:

1. Reboot your phone (sometimes helps with temporary crashes).
2. Reset the settings to factory (Settings → Additional → Recovery and Reset).
3. Test the sensor in diagnostic mode: dial ##6484## (some firmware runs #4636## → «Testing of equipment»).

⚠️ Warning: If the screen is completely black, but the phone is making sounds and vibrating, the problem may be the display plume or the motherboard, in which case replacing the touchscreen will not help!

Selection of spare parts: original vs. analogue and where to buy

For Xiaomi Redmi 4X The touchscreen comes only in the assembly with the display (module) LCD + Touch Panel. Sensor not sold separately:

Where to buy:

• 🛒 AliExpress – Cheapest, but Longest to Wait (Look for 98-rated sellers%+ and reviews on Redmi 4X).
• 🏬 Local service centers – you can touch the spare part before buying.
• 🌍 Specialized sites (e.g. GSMserver, Mobile-Repair) – fast delivery, warranty.

When buying, check:

1. The presence of a plume in the kit (sometimes only glass is sold!).
2. Compatible with the Redmi version 4X (There are differences 2/16 GB and 3/32 GB, but it doesn't affect the touchscreen).
3. No scratches or chips on the new module.

⚠️ Warning: If you buy a module with a security glass already pasted, make sure it doesn't interfere with the sensor's performance! Sometimes cheap glass blocks infrared sensors.

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Before buying a spare part, take a picture of the old touchscreen from the back - so you can compare connectors and mounts with the new module.

Tools required: what to prepare before disassembly

To replace the touchscreen with Redmi 4X You'll need it:

Screen suction cup (∅ 5-7 cm)|Plastic shoulder blades (mediators)|Screwdriver. T3 and T5 (screw)|Tweezers with curved ends|Dryer or thermo-air station (power 300-500 W)|Double-sided tape or glue B-7000|Alcohol and wipes for cleaning|Gloves (optional, for fingerprint protection)-->

Why are these tools:

• 🔧 Suction cup is needed to carefully raise the screen - without it there is a high risk of damaging the plume.
• 🔥 The hair dryer heats up the glue that the touchscreen uses to attach to the frame, and without heating, the glass can crack when dismantled.
• 🧲 Plastic blades will prevent scratches on the body (metal tools leave traces!).
• 🧴 Clay. B-7000 or bilateral tape will be required to fix the new module.

If you do not have a thermal air station, you can use a regular hair dryer, but:

• Set the maximum temperature (no cold air mode).
• Keep the dryer at a distance of 5-7 cm from the screen so as not to overheat the board.
• Heat evenly, driving the hair dryer in a circle (do not linger in one place!).

Also prepare the workplace:

• 📱 Work on a flat surface covered with soft cloth (so as not to scratch the screen).
• 🔌 Turn off the phone from charging and take it out SIM-memory-card.
• 📸 Take a picture of each step of the disassembly – it will help to put the phone back together.

Step-by-step: how to disassemble Xiaomi Redmi 4X replace the touchscreen

The replacement process consists of 5 steps: heating the glue, dismantling the old module, disabling the plume, installing a new touchscreen and assembly. Follow the instructions strictly in order!

Step 1: Warm up and remove the old touchscreen

1. Turn off the phone and heat the screen with a hair dryer for 3-5 minutes. The glue should become soft, but not liquid.

2. Stick the suction cup to the bottom of the screen (where the charging connector is). Pull it up carefully, and there should be a gap.

3. Put the plastic blade in the gap and slowly lead it around the perimeter, separating the touchscreen from the frame. If the glue is hardened, warm up again with a hair dryer.

⚠️ Attention: Don't pull the screen by force! The touchscreen plume is very fragile and can break. If you feel resistance, warm up.

Step 2: Turning off the plume

1. Once you remove the touchscreen, you'll see a metal plate covering the plume. Carefully unscrew it with a screwdriver. T3.

2. Put a plastic blade on the plume connector and unplug it from the motherboard. Don't pull the wires!

3. If the plume is glued - warm it up with a hairdryer (temperature 60-70)°C) and carefully separate.

Step 3: Install a new touchscreen

1. Remove the protective film from the new module and check if the connectors match the old touch screen.

2. Connect the plume to the motherboard and fix the metal plate.

3.Put the glue on. B-7000 or double-sided tape around the perimeter of the frame (do not save - otherwise the screen will "play»!).

4. Apply the new touchscreen carefully, combining the speaker and camera holes. Press the edges.

Step 4: Checking the performance

1. Connect the phone to charge (don't turn it on!) If the screen catches fire, the plume is connected correctly.

2. Turn on your phone and test the sensor in the menu or through code ##6484##.

3. Check multi-touch (simultaneous taps in different places) and sensitivity of the edges of the screen.

⚠️ Warning: If the screen flashes after the replacement or if the stripes appear, check the density of the plume. It may not be fully inserted into the connector.

Step 5: Assembly of the phone

1. Make sure there is no dust or hair under the touchscreen (they will be visible on the screen!).

2.Swipe all the screws back (do not pull!).

3. glue the back cover (use double-sided tape or glue).

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The main rule when assembling is not to rush! 80% of problems after self-repair arise from a curved inserted plume or poorly glued screen.

Common Mistakes and How to Avoid Them

Even with care, you can make mistakes that will cause your phone to break down or break down again.

• 🔥 Overheating of the board - if you heat it too long with a hair dryer, the chip can be soldered off. Optimal heating time: 3-5 minutes with breaks.
• 🧲 Using metal tools -- scratching the body and closing contacts -- just plastic or wood!
• 🔌 Incomplete shutdown of the plume - if you pull a touchscreen with a connected plume, the connector on the motherboard will break.
• 🧴 Savings on glue – cheap glue will fall off over time, and the screen will start to “go away».
• 📱 If you get dust under the screen, you'll see black dots!

If there are problems after replacement:

If you are not sure of your abilities, it is better to contact the service. The most expensive mistake when self-repairing is damage to the motherboard (its replacement will cost 5-7 thousand rubles).

How much does it cost to replace the touchscreen in the service vs. independently

Price of replacement touchscreen on Redmi 4X It depends on the type of part and the region. Here's the average price for 2026:

The most profitable thing to buy a spare part yourself and change it yourself, but only if you are confident in your skills. The savings will be from 1,500 to 4000 rubles depending on the type of module.

Is the game worth the candle?

• ✅ Yes, if you already have the tools and experience of disassembling the equipment.
• ✅ Yes, if the phone is not warranty (self-repair it removes).
• ❌ If you have never repaired electronics, the risk of damage to the fee is too high.
• ❌ If you are a good person (it is better to trust the professionals).

FAQ: Answers to Frequent Questions