Smartphones series Redmi deservedly enjoy great popularity due to the excellent ratio of price and quality, but even reliable devices require intervention over time. Broken screen, worn-out battery or failed charging ports are typical problems faced by owners of Xiaomi Redmi 8T. Self disassembly of the gadget can significantly save on services of a service center, if you have minimal skills with equipment.
The process of dismantling this device has its own features that must be considered so as not to damage the fragile plumes and not to split the rear glass panel. In this article, we will take a detailed look at each step of the work, from the preparation of the workplace to the final assembly.
Before you start taking action, you need to make sure that you have all the necessary tools at hand. Lack of specialized equipment can damage the case or internal components, so you should not rely only on improvised tools like kitchen knives. Quality training is the key to successful repair and maintaining a warranty on the rest of the nodes of the smartphone.
Preparation of the workplace and necessary tools
For a quality disassembly Redmi 8T, you need a specific set of tools that differ from the standard set for the assembly of furniture or electronics. The main difficulty is the attachment of the back cover to glue, which requires careful heating and the use of thin plastic blades. Metal tools can leave scratches or damage the glass, so their use in the initial stage is highly undesirable.
Special attention should be paid to the organization of lighting and cleanness of the working surface. Small screws are easy to lose, and dust can spoil the appearance of the device after assembly. Magnetic mat or organizer for screws will be an excellent assistant in sorting fasteners of different sizes.
- 🔧 Precision screwdrivers (cross-hatched) PH000, PH00 flat)
- 🔥 Hair dryer construction or professional heating pad for uniform heating
- 🛠️ Plastic mediators and suction cup for opening the body
- 🧲 Tweezers with curved ends for working with small details
Heating the back is a critical step that cannot be ignored: the glue layer that holds the glass only softens at around 80-90 degrees Celsius, but overheating can damage the display matrix or battery. It is recommended to warm the perimeter of the device evenly, constantly checking the temperature with your hand to prevent burns or deformation of components.
Removal of the rear glass panel
The beginning of the dismantling of Xiaomi Redmi 8T always begins with disconnecting the device from the network and turning off the power. After the smartphone is completely cooled, you need to turn on the heating of the rear cover around the perimeter. Do not direct hot air to the center of the device or to the camera area, as this can damage optical stabilization or cause battery bloating.
Once the glass is warm to the touch, gently apply a suction cup at the bottom of the back cover and pull up slightly, creating a small gap. Insert a plastic mediator into the resulting gap and start slowly leading it along the faces, cutting the adhesive layer. Movements should be smooth, without sharp jerks, so that the glass does not crack under pressure.
⚠️ Warning: Do not attempt to remove the back cover immediately after heating without passing the mediator around the perimeter. In the area of the camera module, the adhesive may remain solid, and a sharp movement will cause the glass to chip or damage the plume of the fingerprint scanner.
Once the lid is successfully removed, put it in a safe place, preferably on a soft cloth, so as not to scratch the surface. Inside, you will see a metal frame that protects the main components, and a battery that occupies most of the space.
Dismantling the protective frame and access to the insides
Under the back cover is a metal plate that is screwed with many screws of different calibers, and you have to unscrew all the visible fasteners to access the motherboard and battery.
Use a magnetic tip screwdriver to retrieve the screws, but be careful: a magnet can affect the operation of some sensors if you bring it too close to the open modules. After removing the entire fastener, carefully lift the frame, checking if the plumes of the buttons or speakers are hooked.
☑️ Checking before removing the framework
When you take the frame off, you get full access to the battery and the bottom board, and at that point, you see the cooling system and the location of the main connectors, and the display plume and the touchscreen plume are usually protected by metal plates on top, which also require neat dismantling.
Replacement of the battery and work with the battery
The battery in the Redmi 8T is glued to the body on double-sided tape, which makes it difficult to remove it without the risk of deformation. Under no circumstances do not try to tamper with the battery with metal objects, as a puncture of the lithium polymer cell can lead to fire or chemical burn. It is safest to use special hoods with suction cups or gently poke around with a plastic card, preheating the battery area.
Before you turn off your old battery, be sure to unplug the plume from the motherboard, a critical safety rule that can short-circuit and cause the power controller to fail, and then proceed to carefully twist the battery.
| Parameter | Meaning | Note |
|---|---|---|
| Capacity | 5,000 mAh | Nominal capacity |
| Type | Li-Polymer | Lithium-polymer |
| Tension. | 3.85 In | Nominal. |
| Firming | Adhesive tape | It requires heating. |
The new battery is installed in reverse order. Be sure to apply a new layer of glue or use special adhesive strips to keep the battery from hanging around inside the case. Battery fixation is important not only for shock protection, but also for proper heat sink.
What to do if the battery is swelling?
Replacement of the display and touch screen
Replacing the display module is one of the most difficult operations when repairing Xiaomi Redmi 8T. The screen here is attached not only to the frame, but also to the adhesive layer around the perimeter. To replace you need to completely dismantle all the internal components, replacing them on a new module, or carefully separate the broken glass from the frame, which at home is almost impossible to do without the risk of damage.
When you install a new module, it is important to correctly combine the plugs. The display plume and touchscreen are different sizes and number of contacts, so it is difficult to confuse them, but you can not apply excessive force when connecting. Connector fasteners should snap with a slight but tangible click.
- 🧹 Carefully clean the frame from the remnants of old glue and dust
- 🧪 Degrease the frame surface with alcohol before sticking the new screen
- 🔌 Check the touchscreen before the final assembly and screw twisting
- 🖼️ Make sure there are no stains and broken pixels when turned on
Once the plumes are in place, take your time to close the device, plug in the battery and turn on the smartphone to check the image and sensor response, and if everything is working correctly, you can start the final assembly, otherwise you will have to re-assemble the device to check the connections.
⚠️ Warning: When working with the display, avoid moisture on the plumes. Even a microscopic drop of water can cause corrosion of contacts and failure of a new expensive module in the future.
Working with the charging port and bottom plume
Charging problems are often not related to the port itself, but to oxidizing the contacts or damaging the bottom plume on which it is located. In Redmi 8T, the USB Type-C connector is soldered on a flexible plume that also includes a microphone and antenna contacts, which is easier to replace than replacing the screen, and does not require the complete dismantling of all components.
To access the port, remove the back cover and the safety frame, and the plume connects to the motherboard through a connector at the bottom of the device, carefully bend the locking plate, remove the old plume, and install a new one, making sure it lies flat and not squeezed.
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When you change the charging port, immediately clear the main speaker and microphone from dust, as access to them is completely open at this point, which will improve the quality of sound and work of the interlocutor.
Often, the entire bottom plume assembly is changed along with the port, as this ensures that there are no problems with the antenna and microphone in the future. Original components provide better signal transmission, so you should avoid cheap analogues of unknown origin. The quality of soldering and materials directly affects the durability of repairs.
Assembly of the device and verification of functionality
The final stage of dismantling Xiaomi Redmi 8T is the assembly, which is done in a strictly reverse order. Start by installing all the internal components in their places, making sure that no plume is pinched with a frame. Twisted all the screws, keeping order to ensure that the parts fit evenly.
Pay special attention to applying a new adhesive to the back cover. Use a special adhesive B-7000 or ready-made adhesive frames that ensure tightness and reliable fixation. After gluing the lid, it is recommended to fix the smartphone with stationery gums for 1-2 hours for polymerization of the adhesive.
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Quality assembly means that the body is not creaking when compressed and there are gaps between the glass and the frame. If the lid is not tightly attached, check if the frame screws are correctly installed.
Once the glue is dry, turn on the device and do a comprehensive test: a camera, speaker, vibration, Wi-Fi and cellular test. Make sure the proximity sensor and fingerprint are working correctly. Only if you pass all the tests successfully indicates that you have repaired correctly.