Replace the screen on Xiaomi Redmi Note 4X with your own hands

Broken glass or a lost touchscreen on a smartphone is always an unpleasant situation that is unsettling. Especially frustrating when it comes to such a folk favorite as Xiaomi Redmi Note 4X, which is still famous for its reliability and performance. However, do not despair and immediately carry the device to the service center, where you can ask for an unreasonably high amount of money for work.

Replacing a display module on your own is a real challenge for someone with minimal technical and neat skills. Rebuilding a smartphone with your own hands will not only save your budget, but also give you confidence. In this article, we will discuss in detail the process of dismantling old components and installing a new screen.

Before you get to work, you need to understand the risks and prepare the workplace. Electronics repair requires cleanliness, good lighting and no static electricity. If you're willing to follow the instructions and take your time, your Redmi Note 4X will shine again with a new display.

Diagnosis of malfunction and selection of components

The first step is to determine exactly what the fault is. Often users confuse damage to the protective glass with failure of the matrix or touch screen. If the image on the screen is bright, without spots and stripes, but the phone does not respond to touch, then most likely the problem lies in the digitizer (touch layer). If there are black spots, vertical stripes or complete absence of the image when the backlight is working, you need to replace the entire display module in the assembly.

For the Xiaomi Redmi Note model 4X (codenamed nickel, there are several versions of the screens that may differ in color quality and brightness, original parts, high-quality copies (High Copy) and frankly cheap counterparts are on the market. IPS, because they provide better viewing angles and color saturation compared to budget TN-panel.

⚠️ Note: When buying, pay attention to the connection plume. In some cheap counterparts, the location of the contacts may differ slightly, which will lead to the inability to install without soldering.

It is also important to check the status of the plumes before buying, even a new-looking screen can have micro-cracks in the connection area that will only appear after assembly. Always ask the seller to check the operability of the module before sending or buying by connecting it to the test board.

Tools and workplace preparation required

You don't need professional equipment, but a set of special tools is a must. The main challenge with replacing the screen with the Redmi Note 4X is that the display module is glued to a metal frame, not just inserted into slots, as in some other models.

To successfully perform the operation to replace the display, you will need the following tools:

• 🔥 Thermophen or professional heating pad for softening glue.
• 🛠 Sets of screwdrivers (cross Phillips #000 and flat).
• 💳 Plastic card or special mediator for opening the case.
• 🧴 Fluid B-7000 or similar electronics glue.
• 🧲 Magnetic screw-sorting mat.

Also, be sure to prepare a suction cup for neat screen pull-off and tweezers for working with small plumes.The workplace should be spacious and well-lit. It is recommended to use an antistatic bracelet or periodically touch grounded objects so as not to damage electronics with a static discharge.

The process of disassembling the smartphone

Starting the disassembly procedure with the extraction SIM-This is a critical step, because trying to remove the back cover with the cards installed can cause the slots to break, and then we turn off the smartphone and unscrew the two screws at the bottom of the case, on the sides of the Micro-USB charging connector.

Then you move the back metal cover, use a suction cup or a thin plastic mediator, insert it into the junction between the lid and the frame, move the tool around the perimeter, snapping the plastic latches, and act carefully so that you don't damage the fingerprint scanner plume, which is often glued to the lid.

Once the lid is removed, you can access the insides of the device, and the first thing you need to do is turn off the battery, find the battery connector on the board, and gently disconnect it with a plastic blade, and this will turn off the device and protect the motherboard from short circuits as you go along.

Dismantling of the old display module

The next step is to remove the elements that block access to the display plumes, and you need to unscrew the screws that lock the metal plate that covers the connectors of the screen, usually about 4-6 pieces. After removing the plate, carefully disconnect the display plume and the touchscreen plume (if they are separated) from the motherboard.

Now you have to remove the display module itself. Unlike many modern smartphones, the Redmi Note 4X has a screen glued to an intermediate metal frame. To remove it, you need to warm the front of the device with a thermophen. The temperature should not exceed 80-90 degrees, you should warm evenly over the surface for 2-3 minutes.

After the glue is warmed, gently tuck the edge of the display with a suction cup or a thin blade. Slowly and smoothly pull the screen, while passing the mediator between the glass and the metal frame, cutting the glue layer. Try not to damage the frame itself, as the new screen will stick on it.

⚠️ Warning: When dismantling, be extremely careful with the lighting and touchscreen plumes, which are very thin and easily break when handled carelessly, which may require replacement of additional components.

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If you don't have a thermophene on hand, you can use an iron to set the minimum temperature and iron the screen through a dense cloth or paper, but temperature control is difficult.

Installation of a new screen and assembly

Before installing a new module, you need to carefully clean the metal frame of the residue of old glue, you can use isopropyl alcohol or a special solvent, the surface must be perfectly smooth and fat-free, otherwise the new screen will lie uneven or you will see the lights.

Apply a thin layer of B-7000 glue around the perimeter of the frame. Don't overdo it, otherwise excess glue can leak onto the matrix or into the device body. Carefully attach the new display module to the frame, combining all the holes and edges. Press tightly around the perimeter and lock with rubber bands or stationery clips for 15-20 minutes before primary polymerization.

Once the glue is grasped, connect the display plumes to the motherboard. Make sure they are plugged in to the point and snapped. Then put a metal shield in place and twist all the screws. Before final assembly, it is recommended to briefly turn on the phone to check the image and operation of the touchscreen.

Checking and calibration

Once the device is fully assembled, you need to do a final check. Turn on your smartphone and carefully examine the screen when you turn on the white picture. IPS-The display should not be lights, broken pixels or uneven illumination at the edges.

Next, check the touch layer. Do a multi-touch test by moving several fingers across the screen at once. Make sure there are no dead zones and no shaking cursors. You can use Xiaomi's engineering menu to make a deep diagnosis by entering the code ##6484## in the phone app.

If you notice that the colors on the new screen are different from what you expected, or the touchscreen is not working correctly, you may need to calibrate. In some cases, resetting to the factory settings helps, but more often the problem lies in the quality of the spare part itself or poor contact of the plume.

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The quality of the adhesive and the thoroughness of cleaning the frame are the main factors affecting the durability of repairs and the absence of dust under the screen in the future.