How to replace the touchscreen Xiaomi Redmi 4X self: instructions with photos and nuances

Why the touchscreen on Redmi 4X It is broken and when it is necessary to change it yourself.

Touchscreen (touchscreen) on Xiaomi Redmi 4X — One of the most vulnerable parts of a smartphone, and even when used carefully, problems can occur over time, from individual dead zones to complete sensor failure, most often due to mechanical damage (hitting, falling), moisture falling under the screen or wear of the connection plume. Less often - in factory marriage or firmware failures, when the touchscreen ceases to respond to touch without visible damage.

Replacement of the touchscreen in the service center will cost 2-4 thousand rubles (depending on the region and the status of the workshop), while the original module can be bought for 800-1500 rubles, and the analogue is even cheaper. If you have experience with small electronics and patience, self-repairing can save up to 70 percent of the cost, but it’s important to be clear about the risks: Disassembly errors can damage the display plume, detach the battery, or even crash the motherboard. This guide will only be suitable for the Redmi model. 4X (codename santoni) – other Xiaomi smartphones may have a different design.

Before you start, answer three questions:

• 🔧 Do you have experience in disassembling equipment (at least a laptop or tablet)?
• 🛠️ Are you willing to spend 1-2 hours on fine detail?
• 💸 Are you at risk of damaging your phone if something goes wrong?

If the answer to at least one question is “no”, it is better to turn to professionals.

What tools and spare parts will be needed to replace

To replace the touchscreen with Redmi 4X You'll need a minimal set of tools, but you won't need some positions, like plastic blades, which are mandatory -- metal screwdrivers or knives will damage the plumes or the case. It is also critical to use heat pads for the battery, since when heated, it can deform.

Here is a complete list of what needs to be prepared:

• 🔨 Screwdriver kit: cross-haired (PH00) and flat (1.5-2 mm) for the screws of the body.
• 🔥 Dryer or thermo-air station (at least 500 W) for softening the adhesive.
• 📱 Plastic blades / mediators (2-3 pieces) for screen separation.
• 🧲 Suction cups (1-2 pcs) for lifting the display module.
• 🔋 New battery heat pads (sold as a bundle with screen or separately).
• 🛡️ Protective glass (optional, but it is recommended to install immediately after repair).
• 🧴 Isopropyl alcohol (90%+) clean-up.
• 📦 New touchscreen (original or qualitative analogue, for example, from the OEM-producer).

Important: When you buy a touchscreen, check if it comes with a frame and adhesive layer. Cheap modules without a frame will complicate the assembly, you have to move the old frame, which can damage the sensor. Also check that the kit contains two thermal pads (for the battery) and an adhesive layer (or double-sided tape) to fix the screen.

Step-by-step: how to disassemble Xiaomi Redmi 4X and take off the old screen

Disassembling a smartphone is the most important stage. 4X The display module is glued to the body, and the sensor and screen plumes are very fragile. One careless move and you have to buy a new part.

Step 1. Turn off the phone and remove the back cover.

• Turn off Redmi. 4X and get SIM-cards and memory cards (if installed).
• Plug on the screen protective film (you can use scotch) so as not to scratch it during disassembly.
• Heat the hair dryer back cover around the perimeter 1-2 minutes (temperature) ~60°C. This will soften the glue.
• Tap the lid with a plastic spatula, starting at the bottom corner (near the charging connector).

Step 2. Disconnect the battery.

• Unscrew 5 screws that fix the metal plate of the battery (they are of different lengths - remember the location!).
• Carefully slap the plate and put it aside.
• Disconnect the battery plume with a plastic spatula (don’t pull the wires!).

⚠️ Warning: If the battery is swelling, don't try to remove it, it's dangerous, and then you'd better take it to a service where it's being replaced with safety precautions.

Step 3. Remove the display module.

• Unscrew the screws that hold the metal frame of the motherboard (there are 8-10 pieces).
• Disconnect the plumes: first the touch screen (top connector), then the display (bottom). Use a plastic spatula!
• Heat the screen edge with a hair dryer (temperature) ~70°C) and gently suction it.
• Slowly separate the module as you move around the perimeter. If the glue doesn't lend itself, warm it up again.

After removing the screen, clean the case of glue residues with isopropyl alcohol. Do not use acetone or solvents - they can damage the plastic!

How to install a new touchscreen: Assembly and connection

Installing a new screen requires as much care as disassembling. The main rule is: do not apply force when connecting plumes and twisting screws. 4X The sensor and display connectors are very fragile – they are easy to bend or tear off.

Step 1. Prepare a new module.

• Remove the protective film from the inside of the touch screen (if any).
• Make sure there is no dust or debris on the glue layer.
• If there is no glue in the kit, apply bilateral tape around the perimeter of the case (thickness). ~0.5 mm).

Step 2, plug the plumes in.

• Carefully insert the display plume into the lower socket of the motherboard (it is wider).
• Then, put it in the snare (it should be snatched).
• Repeat the same for the sensor plume (top connector).

⚠️ Warning: If the touchscreen doesn't work after assembly, but you have an image, chances are you've leaked the sensor plume. Don't turn the phone on, disassemble it and check the connection again.

Step 3: Set up the screen and assemble the phone.

• Place the display module on the body, combining the holes under the screws.
• Keep it in place throughout the entire area (no slouching!).
• Twisting the screws of the metal frame of the motherboard (do not tug!).
• Connect the battery and check the performance before final assembly.

If everything works (the screen responds to touch, there are no artifacts on the display), twist the screws of the back cover and stick it back (~50°C) and press the lid for 1-2 minutes.

- Does the sensor respond to touches all over the screen (use the Touch Screen Test app).

- No broken pixels or backlights on the edges of the display.

Does autobrightness and gestures work (e.g., double tapping to wake up)

If something is wrong, take the phone apart and check the plumes again.-->

Common Mistakes and How to Avoid Them

Even with careful work, you can make mistakes that will lead to a broken screen or other problems, and here are the most common ones and ways to prevent them:

Another common problem is that the sensor is broken after replacement, and there are many reasons.

• 🔌 The sleeve is not tightly inserted (check the latch on the connector).
• 🔥 The sleeve is damaged during disassembly (look at the ruptures).
• 📱 Broken touchscreen (try connecting the old one – if it works, the problem is in the new part).
• 🔄 Calibration is required (in rare cases, resetting the settings helps).

If you've had a screen that's working after you've changed, but you've got a stain or a yellow patch, you've probably overheated the display module, and you'll have to replace it again, and you can't fix it.

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The most common reason for a sensor to fail after replacement is a misconnection of the plume. Always check the fixation of the connectors before the phone is finally assembled.

How to check the performance after replacement

After you build the phone, don't rush to turn it on. First, visually inspect the case:

• 🔍 Is there a gap between the screen and the frame?
• 🔍 Are the plumes sticking out or the screws?
• 🔍 All buttons (onsets, volumes) are pressed normally?

Then turn on the Redmi. 4X And do checklist checks:

1. Sensor Test: Use the Touch Screen Test app (available on the Play Market) to test your touch response across the screen, and pay special attention to the edges, which are often the dead zones.
2. Display test: Open a white background (such as in Notes) and check if there are no broken pixels, slashes, or uneven backlights.
3. Gesture Test: Check the double touch for wake-up, swipe and multi-touch (e.g., zoom in the Gallery).
4. Sensor Test: Make sure the proximity sensor (during the call) and autobrightness are working.

If all is well, install a safety glass (preferably immediately, until the new screen is scratched) If problems are detected, do not panic - in 80% of cases, they are solved by re-disassembling and checking the plumes.

⚠️ Note: If after replacing the touchscreen, the phone began to warm up strongly or discharge quickly, most likely you damaged the battery or its plume!

How much does it cost to replace the touchscreen in the service and when it is justified

The cost of replacing the touchscreen Xiaomi Redmi 4X The average price varies between service centers and the location of the workshop:

Self-substitution will cost 800-2000 rubles (cost of spare part) + But savings are only justified in three cases:

1. You already have experience in electronics repair.
2. You buy a quality spare part (original or proven analogue).
3. The phone is not guaranteed (otherwise, self-repair will cancel it).

It is worth contacting the service if:

• 🔧 You've never taken out smartphones.
• 🔋 Battery swelled or damaged.
• 📱 You need a 100% guarantee for work (in official services it is up to 1 year).
• 💸 You value your time more than saving 1–2 thousand rubles.

Remember, even in the service, you can run into unscrupulous masters. To avoid cheating, always ask:

• 🔹 What kind of spare part will be put (original or analogue)?
• 🔹 Do you have a job and spare part guarantee?
• 🔹 Will I check my phone after repair?

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If you are not confident in your abilities, it is better to overpay for the service than to damage the phone and spend 2-3 times more on repairing the consequences.

FAQ: Answers to frequent questions about replacing the touchscreen with Redmi 4X