How to disassemble the Xiaomi Redmi 8T phone: step-by-step instructions

Modern smartphones like the Xiaomi Redmi 8T are complex engineering designs where every millimeter of internal space is used as efficiently as possible. However, over time, any device requires maintenance: whether it is replacing broken glass, installing a new battery or cleaning from dust. Self-disassembly of a gadget is not only a way to save on the services of a service center, but also an opportunity to understand the device of your electronic assistant. Before you start the process, you need to realize that opening the case automatically deprives you of an official warranty if it was still in effect.

The process of dismantling Xiaomi Redmi 8T requires increased care, since the device body has no screws on the outside and is assembled mainly on adhesive joints. Wrong actions can damage the plumes, break contacts or, in the worst case, to ignite lithium polymer battery. In this article, we will discuss each step of the work, paying special attention to safety and the use of a specialized tool.

It's important to understand that accuracy is a key success factor. Haste often causes cracks in the back cover or broken display plumes. If you've never done electronics repair before, study the theory and prepare the workplace carefully, and only careful preparation will avoid fatal errors and successfully complete the procedure.

Preparation of the workplace and necessary tools

The quality of the repair depends on how well you are prepared for the process. To disassemble the Redmi 8T, you will need a specific set of tools that differs from the standard household. First of all, you need to ensure good lighting of the work area, since many parts are small and require visual control when extracting.

The core toolkit should include the following items:

• 🔥 A hair dryer or thermostole to soften the glue under the back cover.
• 🔧 A set of screwdrivers with a cross slit (PH00 or PH000).
• 🎴 Plastic blades (mediators) and a suction cup for opening the body.
• 🧲 Magnetic mat or organizer for screws so as not to lose them.

Special attention should be paid to the choice of suction cups and shoulder blades. The use of metal tools at the initial stage is strictly prohibited, as they can damage the glass or cause short circuit. Plastic mediators must be thin, but strong enough to penetrate narrow gaps without breaking inside the case. It is also recommended to have tweezers with curved ends at hand for easy grip of small plumes.

Before any manipulations, be sure to discharge the smartphone battery to 15-25%. A fully charged battery can flash when damaged, and a fully discharged battery will not allow you to check the health of the device after assembly. Safety is paramount, so make sure that there are no flammable materials in the room.

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Use a magnetic mat to sort screws. Different screws in Xiaomi Redmi 8T are of different lengths, and installing a long screw in a short hole can punch through the motherboard.

Removal of the back cover and initial inspection

The most difficult part of dismantling Xiaomi Redmi 8T is neat separation of the rear glass panel, which is glued around the perimeter with a special sealant that requires heating to soften. Do not try to force the lid to uncook without pre-heating, this is guaranteed to lead to its destruction.

Heat the body perimeter with a hair dryer to about 80-90 degrees Celsius. Keep the heat source 2-3 cm from the surface, constantly moving it so as not to overheat one point. After heating, apply a suction cup at the bottom of the back cover and pull up, creating a small gap. In this gap, carefully insert a plastic blade.

⚠️ Attention: Do not enter the shoulder blade deeper. 3-4 Inside, along the perimeter, there may be side button plumes or antenna modules that are easily damaged by careless movement.

Move the blade along the perimeter, gradually cutting through the adhesive layer. Move slowly, feeling resistance. If the lid stops moving, warm up the area again. Once the adhesive around the perimeter is overcome, carefully remove the back panel. You will see the inner layout, where the battery and the protective plastic plate occupy the main volume.

Dismantling the protective plate and disconnecting the plumes

When you take the back cover off, you'll see a black plastic plate covering the top of your smartphone, and underneath that are the main connectors and the motherboard itself, and you'll need to unscrew all the visible screws that lock in that protection to access the insides. The number may vary, but they are usually around 10-12 piece.

The recommended method is to use the "layout" method, where you lay out the screws in the same order in which you twisted them, which will greatly simplify the process of reverse assembly and prevent errors. After you twist all the screws, gently tuck the plate with the mediator and remove it.

The first step after removing the protection is to turn off the battery, find the battery plume and carefully bend it with a plastic blade, and then you can turn off the other plumes: the display, the main and front camera modules, and the lower board plume, which will prevent accidental short circuit.

When working with plumes, be extremely careful. They are very thin and sensitive to clatters. Use tweezers only to grab special tongue contacts, but never squeeze the plume itself. Connectors in Xiaomi Redmi 8T can be quite tight, so act confidently, but without jerking.

Removal of the battery and replacement of components

The battery in the Redmi 8T takes up most of the internal volume and is attached to double-sided tape. It also requires heating to extract it, but from the inside of the case. Be extremely careful: damage to the battery shell by a sharp object or strong pressure can lead to ignition.

There are several ways to safely remove the battery:

• 🌡️ Heating the back of the body with a hairdryer to soften the glue under the battery.
• 🧵 Using a special fishing line or a thin string to "re-saw" the adhesive layer.
• 💧 Careful introduction of isopropyl alcohol under the edges of the battery for dissolving glue.

Do not use metal blades to smack the battery. If you feel that the battery is not going away, add more heat or alcohol. After removing the old battery, clean the seat of glue residue. The new power unit should be installed smoothly, without skewing, so as not to damage the back cover during assembly.

If your goal was to replace other components, such as a vibro motor or a lower board, then once the plumes are turned off, they are immediately accessible. Vibromotor is usually located at the bottom and is fixed with a screw or glue. The lower board with a charging connector is also mounted with screws and requires careful removal from the seat.

Removal of the display module and work with the frame

Replacing the display with the Xiaomi Redmi 8T is one of the most difficult operations, because the screen is glued to the frame around the perimeter. It's often cheaper and easier to replace the screen with the frame, but if you decide to change only the matrix, you have to sweat. The frame of the device is made of plastic, which is afraid of high temperatures, so you need to warm up very carefully.

The process of removing the module is as follows:

1. Unscrew all the screws fixing the board at the top (if they are not already twisted).
2. Disconnect all the plumes going from screen to board.
3. Heat the screen perimeter with a hairdryer, trying not to warm the center of the matrix.
4. Using a suction cup and shoulder blades, gradually separate the module from the frame.

⚠️ Warning: Watch the temperature when the display is heated. Overheating can cause yellow spots on the matrix or detach the polarization layer, making the screen unusable.

After removing the old module, carefully clean the frame of the residual glue. For a new installation, use a special glue B-7000 or double-sided tape for the screens. Apply the glue with a thin strip, avoiding getting into the case. When installing the new module, make sure that the plumes are properly stacked and not clamped.

Assembly of the device and verification of functionality

The Xiaomi Redmi 8T is assembled in reverse order, but requires no less concentration. Before the final fixation of the back cover, it is recommended to conduct an initial health check. Connect the display and battery plume, then try to turn the device on.

Check the main functions:

• 📱 Does the touch screen react (touch screen).
• 🔊 Does the sound work in the speaker and through headphones.
• 📸 Does the camera take a photo and does the flash work.
• 📡 Does Wi-Fi and mobile network catch.

If all the tests are successful, you can start the final assembly, put all the screws in their places, making sure that nothing hangs, the back cover before gluing must be cleaned of the old glue with alcohol, apply a new layer of glue or stick a special adhesive frame.

Tightly press the lid around the perimeter and lock the device with rubber bands or a load for 15-20 minutes to polymerize the glue. Don't turn the phone on immediately after assembly, let the glue grip. The sealability of the case will not be restored completely, since the factory equipment can not be recreated at home, but the device will receive basic dust protection.

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Check assembly before applying glue to the back cover is a must-see step that will save you from having to disassemble the phone again due to a forgotten screw or unconnected plume.

Table of the main screws and their location

For ease of assembly, below is a table with the main groups of screws used in the design of the Redmi 8T. Remember that you need to twist them without excessive effort, so as not to tear the thread in the plastic racks.

During the operation of the smartphone, various situations may arise that require clarification. Below are answers to the most common questions that users have when repairing themselves.