How to change glass to Xiaomi: the full guide

Damage to the screen protection layer of a smartphone is one of the most common problems faced by owners of modern gadgets. When cracks or chips appear on the display, the question arises about how to change the glass to Xiaomi to return the device to presentable appearance and functionality. It is important to understand that in many cases it is about replacing the external glass, not the entire display module, which allows you to save a lot of money.

Modern Xiaomi, Redmi and Poco phones are equipped with high-quality matrices, but the protective glass often suffers from falls. If the sensor works correctly and the image is not distorted, then replacing the glass is the most rational solution. However, this process requires accuracy, special equipment and understanding of the design of the device, since the risk of damage to the matrix or battery if you do not skillfully act is quite high.

In this article, we will discuss in detail the preparation stages, the necessary tools and the replacement procedure itself. We will also discuss when to contact the service, and when you can try to cope with it yourself. The right approach to repair will allow you to extend the life of your gadget without the unnecessary cost of buying an expensive module assembled.

Diagnosis of damage: glass or display?

Before you start disassembling a smartphone, you need to determine exactly the nature of the damage. Often users confuse the broken protective glass with the malfunction of the display module itself. If the screen shows cracks, but the sensor responds to every touch, and the image remains bright and without colored stripes, then most likely only the outer layer is damaged. In this situation, replacing the glass with Xiaomi is the right solution.

The situation is very different if you have artifacts on the screen, black spots or a complete touchscreen failure, and in this case, even if you plan to change only the glass, there is a high probability that the entire assembly will need to be replaced during the dismantling process. The sensor layer (digitizer) is often glued to the matrix, and damage to it when removing broken glass is a common problem.

For an accurate diagnosis, do a visual inspection when the screen is off and on. Pay attention to the corners of the device, as this is where the most impacts occur. If the cracks go from edge to edge, but the matrix is intact, the cost of repair will be lower. However, if you see that the liquid has got inside or there is bloating, you better contact the professionals immediately.

⚠️ Warning: If cracks deep and sharp edges of glass touch the matrix when pressed, further operation of the phone is dangerous.

Essential tools and supplies

You can't replace glass properly without a special set of tools. Trying to repair it with a knife or a tool at hand is almost guaranteed to damage the body or the internal components, you'll need a separator or heating source to soften the glue, and you'll need thin strings or blades to separate the layers.

Also, make sure to prepare consumables, the main one being a special glue B-7000 or T-7000, which ensures that new glass is firmly fixed and maintains elasticity, and you will also need a degreaser, a lilaless wipe and possibly new sealing gums if the old ones are no longer used.

The list of necessary equipment is as follows:

• 🔧 Set of screwdrivers (cross and flat) for screws of the body.
• 🔥 Hair dryer or heating pad (to heat the edges of the screen).
• ✂️ Thin string or blade to cut glue.
• 🧴 Clay. B-7000/T-7000 degreaser.
• 🧲 Magnetic substrate for sorting screws.

Separately, it is worth mentioning the ultraviolet lamp if you plan to use liquid LOCA glue to glue glass to the matrix, although at home, ready-made glass with an already applied adhesive layer (OCA) is often used. The presence of a dust shield box or at least a very clean room is critically important, since any speck of dust under the glass will be noticeable.

Preparation of the smartphone for repair

The first step in the process of replacing the glass with Xiaomi is to fully prepare the device.Start by turning off the smartphone and retrieving it. SIM-This is a basic safety rule that prevents short circuits from accidentally damaging the plumes, and then you need to remove the back cover if your model design suggests that.

For models with glass back panels, heating is mandatory. Carefully warm the body perimeter with a hairdryer, but do not overheat the matrix. Once the glue is softened, use a suction cup and a mediator to separate the lid. In models with plastic back, the process is simpler, but requires caution with latches. Always keep your particular model's disassembly scheme handy.

Once the lid is removed, you need to turn off the battery, find the battery plume and gently disconnect it from the board, and this will turn off the device and minimize the risks, and then you can start dismantling the elements that block access to the display plume, often requiring removal of the plastic protection or speaker.

The process of dismantling and replacing glass

The most critical step is to separate the broken glass from the matrix. If you don't have a separator, you can use a heating method, but it requires jewelry precision. Heat the front panel to about 80-90 degrees so that the adhesive layer softens. Then, with a thin string or a special knife, carefully cut the glue around the perimeter.

Move slowly, without any sudden jerks. It's important not to damage the matrix itself and the plumes that can pass close to the edges. If you feel strong resistance, add a little more heat. After successfully separating the old glass, thoroughly clean the surface of the matrix of glue and dust residues. Use microfiber and alcohol, but do not pour liquid directly onto the screen.

Next is the installation of a new glass:

• 🧹 Carefully degrease the surface of the matrix and new glass.
• 💧 Apply a thin layer of glue (if glass is without adhesive layer) or remove the protective film from the OCA-glue.
• 📱 Carefully combine the new glass with the matrix, starting on one side.
• 🖐️ Press the glass and remove the air bubbles, moving from the center to the edges.

After the glass is installed, you need to let the glue dry. Usually, 15-30 minutes is enough for the primary fixation, but it takes up to 24 hours to completely harden, during which time it is advisable to lock the phone with rubber rings or put under a small press to ensure a uniform fit.

⚠️ Warning: Do not turn on the phone immediately after assembly. Let the adhesive seam grab, otherwise when the case is installed, the glass may shift or unstick.

Assembly of the device and verification of functionality

Once the new glass is securely fixed, you can start to reverse assemble, connect the display plume to the motherboard, making sure that you click the characteristic click, then plug the battery and check the sensor and image performance before you finally install the back cover, which will avoid re-disassembly in the event of an error.

Check the multi-touch, brightness and color reproduction. If everything works correctly, apply a new layer of B-7000 glue to the frame and press the back cover. Use rubber rings to fix while drying. Remove the excess glue that protrudes around the edges until they freeze.

Table of comparison of replacement methods:

The final check should include testing the speaker, microphone and proximity sensors, as if you change the glass, you can accidentally hit their plumes. Make sure all screws are swirled into their places, especially those that fix the board.

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The quality of the new glass directly affects the sensitivity of the sensor and the brightness of the screen, so do not skimp on components.

Possible problems and ways to solve them

Even with careful work, there can be unforeseen complications, and one of the common problems is rainbow spots or uneven backlighting, which can indicate excessive pressure on the matrix or glue hitting the light guide, and in these cases, careful bulkheading and cleaning sometimes helps.

If the fingerprint scanner (especially the underscreen one) has stopped working after the replacement, check if you have damaged the plume or contaminated the area of the scanner with glue. You may also need to calibrate the sensor through the engineering menu.

List of frequent errors:

• ❌ Overheating of the matrix, leading to the appearance of yellow spots.
• ❌ Damage to the plume with careless cutting of glue.
• ❌ Dust falling under glass, creating visible defects.

In case of serious problems, such as no image or complete failure of the touch screen, do not try to solve the problem by force. it is better to stop and analyze your actions. It may require replacing the entire display module at the assembly, which is a more expensive but reliable option.