Damage to the smartphone display Xiaomi Redmi is one of the most common and unpleasant problems that owners of modern gadgets face. Broken glass, black spots or complete inoperability of the touch layer require immediate attention, since further operation of the device can lead to more serious damage to the internal components.
The process of replacing or removing the screen requires accuracy, an understanding of the design of the device and the availability of specialized tools. Unlike old phones, modern models Redmi often have a monolithic design, where the display module is glued to the frame, which complicates the dismantling procedure. It is necessary to strictly follow the sequence of actions so as not to damage the motherboard or battery.
In this article we will look in detail at how to safely remove the screen on Xiaomi Redmi, what tools are required for the job and what nuances you should pay special attention to. We will consider the stages of preparation, disassembling the case, disconnecting the cables and the final check, so that you can perform the repair efficiently or properly prepare for a visit to the service center.
Preparation of the workplace and necessary tools
Before starting any manipulations with electronics, it is necessary to organize a comfortable and safe workspace. The surface of the table should be clean, level and well lit so that small parts and screws do not get lost. It is recommended to use an antistatic mat or just a clean cloth to avoid scratching the back cover of the smartphone during operation.
To successfully complete the task of removing the display, you will need a set of specialized tools. Without them, the risk of damaging fragile components increases significantly, especially given the dense layout of modern smartphones Redmi. The basis of the set is:
- 🔧 A set of screwdrivers with various bits (including Phillips and Torx stars).
- 🌡️ A thermal hair dryer or heating pad for softening the glue.
- 💳 Plastic spatulas and mediators for opening case.
- 🧲 Magnetic mat for sorting screws.
Particular attention should be paid to the condition of the battery before starting work. If the battery is swollen or damaged, operating the device becomes dangerous. In such cases, it is recommended to first replace the battery or carry out all operations with the utmost care, avoiding any pressure on the back panel.
⚠️ Attention: Before starting disassembly, be sure to discharge the smartphone battery to 20-25%. A fully charged battery, if damaged, can cause a fire or chemical reaction that is hazardous to health.
It is also important to prepare a container for isopropyl alcohol, which is used to dissolve the adhesive base. Do not use water or harsh solvents, as they may damage internal contacts and plastic components. Xiaomi.
Use only 99% isopropyl alcohol when working on electronics. It evaporates quickly and does not leave conductive traces, unlike industrial alcohol or vodka.
Algorithm for safely turning off the power and disassembling the case
The first and most critical step is to completely disconnect the device from the network and turn it off. Even if the screen is broken and does not respond to touches, you need to hold the power button for 10-15 seconds to make sure that the smartphone has entered a deep sleep state or turned off. This minimizes the risk of a short circuit when disconnecting the cables.
The process of opening the case depends on the specific model Redmi. In most modern devices, the back cover is attached with a two-component adhesive. To remove it, you need to evenly heat the perimeter of the case with a hairdryer to a temperature of 80-90 degrees Celsius. Do not hold the hair dryer at one point for too long so as not to overheat the matrix or battery.
After warming up, insert a plastic spatula or thin pick into the joint between the frame and the back cover. Move the tool along the perimeter, carefully cutting through the adhesive layer. It is not recommended to use metal tools, as they can easily damage the cables running under the cover or puncture the battery.
☑️ Check before opening
When the back cover is removed, access to the internal components opens. At this stage, it is necessary to remove the protective plastic strip that covers the cable connectors. It is usually fixed with several screws that need to be unscrewed and folded into a separate cell of the magnetic mat, remembering their location.
| Element | Type of fastening | Risk of damage | Tool |
|---|---|---|---|
| Rear cover | Glue | High (cracks) | Hair dryer, spatula |
| Protective strip | Screws | Medium (breakdown thread) | Screwdriver |
| Display cable | Clamp | Critical (break) | Plastic, tweezers |
| Battery | Glue/Screws | High (fire) | Spatula, alcohol |
After removing the protection, you must visually inspect the location of the connectors. On the motherboard Xiaomi the connectors may differ in size and type of fixation. Some models have additional metal screens covering the connectors, which also require careful dismantling.
Technology for disconnecting the display cable
The most crucial point is disconnecting the display cable from the motherboard. Smartphones Redmi use different types of connectors: snap-on, press-on or combined. Incorrect force can lead to breakage of the connector itself on the board, which will make repairs economically impractical.
To disconnect the cable, you must use a plastic spatula or a special antistatic tool. Pry the connector strictly from below or from the side, depending on the design, avoiding pressure on the central part of the connector. A sudden movement or use of metal tweezers can damage the contact tracks.
If the cable is additionally secured with a metal pressure plate, first carefully bend or remove this plate. In some models Xiaomi the plate can be glued, so preheating or using a glue solvent is required.
What to do if the cable is torn?
If the cable breaks during dismantling, it is almost impossible to restore it by soldering at home. A complete replacement of the display module is required. Attempts to glue or solder broken tracks will lead to unstable operation or complete failure of the touchscreen.
After disconnecting the main image cable, check if there are additional cables coming from buttons or sensors that can be integrated into the screen design. Disconnect them in a similar way, using extreme caution.
Removing a broken display module
Once all connections are disconnected, you can begin to remove the display module itself. Depending on the design Redmi, the screen can be glued to the frame or to the middle part of the body. If the device has a frame, it is often easier to replace the screen along with the frame, which simplifies assembly.
Thermal action must be used again to separate the screen from the frame. Warm up the front of the smartphone with a hairdryer, paying special attention to the edges. Be careful: with strong heat, liquid crystals may flow and plastic may deform, so control the temperature.
Use a suction cup or a thin string (nichrome thread) to cut the adhesive layer. Movements should be smooth and uniform. If you feel strong resistance, add a little more heat or isopropyl alcohol under the edge of the screen.
- 🔥 Heat the surface evenly, avoiding local overheating.
- 🧵 Use a string to carefully separate the layers of glue.
- 🧴 Use alcohol to dissolve any residue adhesive.
During the dismantling process, try not to put pressure on the center of the screen, especially if it is broken. Glass shards may damage the digitizer (sensor layer) or injure your hands. Wear protective gloves and glasses.
⚠️ Attention: If the matrix is cracked, avoid applying strong pressure to it. Liquid crystals can leak and damage other components of the smartphone, as well as cause skin irritation upon contact.
Cleaning the frame and preparing to install a new module
After removing the old display, glue and adhesive residues remain on the frame or case. High-quality surface cleaning is the key to successful installation of a new module. Use a spatula and a cloth dampened with isopropyl alcohol to remove any dirt.
The surface must be perfectly smooth and free of grease. Any unevenness or remnants of old glue may cause the new screen to not fit tightly, gaps to appear, or the seal of the case to be compromised. Inspect the frame for chips and deformations.
If you are installing a screen without a frame, you need to transfer all the small parts (speaker, sensors, button cables) from the old module to the new one. Do this carefully, photographing each stage of disassembly so as not to confuse the location of the screws and cables during assembly.
To fix the new screen, use special B-7000 glue or double-sided tape intended for electronics. Apply the glue in a thin, even layer around the perimeter, avoiding contact with the optical layer of the display or the connectors.
| Glue type | Drying time | Elasticity | Application |
|---|---|---|---|
| B-7000 | 24 hours | High | Screens, cases |
| T-7000 | 24 hourstd> | Medium | Glass, frames |
| 3M Scotch | Instant | Low | Batteries |
| LOCA glue | UV lamp | High | Glass (OSA) |
Let the glue dry a little (usually 1-2 minutes) before finally installing the screen so that it does not leak around the edges when pressed. This will also allow you to correct the position of the module if it is incorrect.
Final assembly and functionality testing
Before final gluing the case and tightening all screws, it is necessary to conduct initial testing. Connect the cables of the new screen to the motherboard Xiaomi and carefully turn on the device without pressing the screen to the frame.
Check the operation of the touchscreen over the entire area, the absence of dead zones, the correct color rendering and the operation of the proximity sensor. Make sure there is no flickering or artifacts in the image. If everything works correctly, you can proceed with the final assembly.
When assembling, make sure that all the cables are placed in their channels and are not pinched. Tighten the screws securing the board and protective strips with the correct torque to avoid stripping the threads. Glue the back cover by pre-warming it and applying a new layer of glue.
Do not rush to immediately turn on the phone after assembly. Allow the glue to gain initial strength for 30-60 minutes to avoid displacement of components inside the case.
After complete assembly, it is recommended to stress test the device: run a heavy application or game, check the heating and stability of the sensor. This will help ensure the reliability of the repair.
Is it possible to replace the screen on a Xiaomi Redmi yourself without experience?
Replacing the screen requires certain skills in working with small electronics. If you do not have experience disassembling smartphones, there is a high risk of damaging cables, connectors or batteries. In complex models with curved screens, the risk of damage during dismantling reaches 50% even for experienced craftsmen.
How long does the glue dry after replacing the screen?
Full polymerization of B-7000 glue or analogues takes about 24 hours. However, initial setting occurs in 15-30 minutes. It is recommended not to subject the phone to stress or to get it wet during the first 24 hours after repair.
Why does the fingerprint not work after replacing the screen?
In some models Xiaomi the fingerprint sensor is integrated into the screen or linked to it programmatically. If a non-original module is replaced or the cable contact is broken, the function may stop working. Sometimes flashing or calibration is required.
Is a broken screen dangerous for use?
Yes, using a smartphone with a broken screen is dangerous. Shards of glass can injure your hands, and a cracked matrix can overheat and ignite. In addition, the seal of the case is broken, which leads to dust and moisture getting inside the device.