Modern smartphones Xiaomi, Redmi and POCO are famous for their performance and build quality, but even the most durable Gorilla Glass is not immune to accidental fall on asphalt or hitting a hard corner. When the display is covered with a web of cracks or has chipped edges, using the device becomes not only inconvenient, but also dangerous for the fingers. Many owners immediately think about completely replacing the display module, which costs a penny, but often the problem lies solely in the external protective layer.
The glass replacement process (called resticking) allows you to preserve the original matrix, which is responsible for color reproduction and image quality, replacing only the damaged top, which saves up to 60% of the cost of repair compared to buying a new module assembled. However, it is worthwhile to understand that this procedure requires certain skill, specialized equipment and ultraviolet glue to achieve factory tightness.
In this article, we will take a look at all the steps from diagnosis to final assembly, and weigh the pros and cons of self-repair, learn what tools you need, how to choose a quality part, and why heating a display above 80 degrees when separated can irrevocably kill the matrix. If you are ready for painstaking work, you can return your gadget to a second life.
Diagnosis of damage and choice of repair method
Before you start disassembling the device, you need to conduct a thorough visual and functional diagnostics. Turn on your smartphone and carefully examine the image on the screen: if there are stripes, spots, broken zones or “broken” pixels, replacing only the glass will not help — in this case, you need a complete replacement of the display module. If the picture is perfect, the touch screen responds to all touch, and only the external glass is broken, then re-sticking is a viable solution.
Special attention should be paid to the edges of the housing, if cracks go deep in or the glass is squeezed out, there is a high risk of damage to the plumes or the matrix itself when heated, in which cases repair becomes risky, and the cost of work can approach the cost of a new module. For models of Xiaomi Mi, Redmi Note and POCO F characteristic use OLED-screens that are extremely sensitive to mechanical pressure.
⚠️ Warning: If after a fall on the screen appeared purple or black spots that increase over time, the matrix is damaged.
It is also important to consider the type of mounting. Most modern Xiaomi smartphones use a frame to which both the matrix and the glass are glued. This simplifies the replacement process, since you do not need to cut the glass from the metal frame, but you need to be careful when peeling off the old part. Make sure that you have all the necessary tools to ensure that you do not interrupt the process halfway.
Required tools and materials
The quality of the result depends on the equipment used, and for professional glass gluing, a set of screwdrivers will not be enough. You will need a separator (a machine to separate glass and matrix) or, in the budget version, a nichrome thread and hair dryer, but the first option is much safer for the user. OLED-The other element is a UV lamp with a power of at least 100 watts for polymerization of adhesive.
The list of consumables and tools should be as follows:
- 🔧 A set of precision screwdrivers (cross, Torx stars) for the screws of the body.
- 🌡️ Thermotable or heating pad for uniform heating of the front panel to 80-90 degree.
- 🧵 Molybdenum thread or specialized machine-separator for safe removal of glass.
- 💧 Fluid B-7000 or isopropyl alcohol for cleaning glue residues.
- 🧴 UV glue LOCA/OCA (liquid or film) and degreasing.
Remember to prepare the workplace. It must be clean, well-lit and dust-proof. Any speck of dust that gets under the glass during gluing will stay there forever and irritate the eye. For models with curved screens (2.5D or 3D), it is critical to use quality glass with the right oleophobic coating, otherwise the touchscreen will not work properly and the finger will slide poorly.
When choosing a new glass, pay attention to compatibility with your particular model. For example, the glass for the Redmi Note 10 Pro may not fit the regular version due to differences in thickness or location of the dynamic capsule. It is best to buy parts labeled "Original" or proven brands like DK or ODM, avoiding cheap counterparts without packaging.
The process of dismantling and separation (removal) of glass
The first step is to carefully remove the display module from the smartphone body. SIM-You can unscrew all the visible screws on the bottom edge, and then, using a suction cup and a mediator, you can flip the back cover (if it's glass) or gently frame it. In models with a plastic back cover, the process is usually easier, but requires caution so as not to damage the fingerprint scanner plume.
After removing the module, it must be fixed to the thermostat and heated to a temperature of about 80-90 It's going to soften the glue that holds the glass, and you have to have a temperature regime, because underheating will cause the matrix to break with a thread, and overheating can damage the polarization layer or the layer itself. OLED-The heating process usually takes 3-5 minutes depending on the thickness of the glass.
☑️ Checklist before separation
The most important thing is that you thread between the glass and the matrix, and you have to move smoothly, without jerking, with minimal pressure, and you have to do it parallel to the plane of the screen, and if you feel a lot of resistance, you have to heat the module up a little bit more, and you have to do it with a camera cutout or a fingerprint scanner, and you have to be very careful in the area of the hole.
⚠️ Warning: Never use metal blades or knives to smack glass on a heated module - one wrong move will result in a deep cut of the matrix and irretrievable damage to the display.
Once the glass is removed, the adhesive remains remain on the matrix, and they must be removed with a special solvent or liquid to remove. LOCA-And you have to do this very carefully, without pressing on the center of the matrix, where the finest plumes are, and the surface has to be perfectly clean and smooth before you apply the new layer.
Applying glue and assembly of the module
There are two main types of glue for re-adhesive: liquid LOCA and solid OCA (film). Liquid adhesive is easier to apply for beginners, as it fills irregularities itself, but requires precise dosage so as not to pour the speaker or plumes. Film adhesive (OCA) gives a more predictable result and does not flow, but requires perfect alignment when sticking, as the bubbles are almost impossible to remove.
If you use liquid glue, apply a few drops to the center of the matrix and evenly distribute them, or use a special stencil. Carefully apply a new glass starting on one side to drive out the air. Make sure that all the holes under the speaker, camera and sensors match. After that, the module is placed under the UV lamp for polymerization.
The drying time depends on the power of the lamp and the type of glue. It usually takes 3 to 10 minutes. It is important to glue all the edges so that in the future there is no moisture and dust. For models with curved edges (2.5D), make sure that the glue is all the way to the very edges, otherwise the glass can peel off when wearing the case.
What to do if the glue does not dry?
Once fully polymerized, put the smartphone in reverse order, frame the module, check the touchscreen until the frame is finally glued, and if everything works correctly, apply a new adhesive (B-7000 or double-sided tape) around the perimeter of the frame and press the display tightly.
Cost comparison: re-sticking or a new module?
Economic feasibility is the main argument in favor of replacing glass. Let's compare the costs with the popular Xiaomi Redmi Note 11. Buying an original display module assembled can cost from 4000 to 6000 rubles, while the price of the glass itself is only 300-500 rubles. Even taking into account the cost of glue and tools, the savings are significant.
However, if you don't have experience, you're at risk of ruining the matrix in the separation process, and you'll still have to buy a new module, and the glass and glue money will be wasted, so if you're doing it for the first time, consider using the service or practicing on a cheap broken screen.
| Parameter | Glass replacement (Perecleic) | Replacement of module assembled |
|---|---|---|
| Cost of the spare part | Low (300-800 rubles) | High (3000-8000 rubles) |
| Preservation of the original matrix | Yes (100%) | No (replaced completely) |
| Difficulty of implementation | High (requires experience) | Medium (needs care) |
| Risk of damage | High (in the absence of skills) | Low. |
| Time to work. | 1.5 - 3 hours | 30 - 60 minutes |
Also, when you replace the module assembly, you get a new frame, which often improves the appearance of the smartphone if the old one has been worn. When you reglaze the frame remains old, and all scratches on it will remain.
💡
Save all the screws in order of their extraction using a magnetic mat or a piece of paper with painted cells. The screws in Xiaomi smartphones can have different lengths and threads, and by confusing them, you can break through the motherboard.
Typical mistakes and expert advice
One of the most common mistakes of beginners is to use too aggressive solvents to clean the matrix. Acetone or strong alcohols can dissolve the polarization layer, after which the screen will turn whitish or covered with iridescent slices. Use only special liquids to clean the displays or isopropyl alcohol of high purity.
Another problem is getting glue into the speaker or on the plumes, and to avoid this, you can close the sensitive elements with paint tape before applying the glue, and also don't overdo it with the amount of glue: excess glue when you heat your smartphone can leak out or squeeze out the glass, creating a gap.
- 🚫 Do not try to heat the screen with a building hair dryer without a thermometer – it is easy to overheat and kill the matrix.
- 🧼 Always degrease the surface before gluing, otherwise the adhesion will be weak.
- 💡 Work in good lighting to see the smallest specks and villi.
If you find that the touchscreen is not working properly after assembly (skips, phantom presses), it may be a problem with poor contact of the plume or too thick adhesive layer. In the first case, you need to reconnect the plume, in the second - alas, the process will have to be repeated with less glue.
⚠️ Warning: After glass replacement and assembly, don't rush to wear a protective glass or thick case. 12-24 hours to avoid displacement of components under pressure.
💡
High-quality glass gluing allows you to save up to 70% of the cost of repair, but requires special tools (separator, UV lamp) and a hard hand.