Disassembly of the Xiaomi Redmi Note 8T smartphone can be required in various situations, from the banal replacement of a broken display glass to the installation of a new battery that has lost its capacity. Despite the fact that modern gadgets are becoming more monolithic, this model retains some repairability with the right tools and knowledge. Self-intervention allows you to save significantly on the services of the service center, but requires extreme caution and attention to detail.
Before you start dismantling, you need to be clear about the risks. Any breach of the integrity of the shell automatically deprives the device of warranty service. If your device is still under warranty, you better contact the official representatives. Otherwise, if you are willing to take responsibility, you should prepare a workplace with good lighting and antistatic coating.
The Redmi Note 8T disassembly process has its own technical features related to the location of the plumes and the attachment of the rear cover. The adhesive used by the manufacturer is quite durable, which requires careful heating of the body perimeter. Incorrect actions can lead to damage to the internal components, so strictly follow the algorithm of actions described in this manual.
⚠️ Warning: Before any work begins, be sure to completely turn off the device. Attempting to disconnect the plumes under voltage can lead to short circuit and failure of the motherboard.
Tools and workplace preparation required
A high-quality disassembly is impossible without a specialized set of tools. Using improvised tools such as knives or pins is highly undesirable, as there is a high risk of damaging plastic elements or getting hurt. To work with the Xiaomi Redmi Note 8T, you will need a minimal but effective kit that will provide safe access to the insides.
Special attention should be paid to tools for working with adhesive joints. The back cover is supported by double-sided tape, which softens when heated. The hair dryer must have a temperature adjustment so as not to overheat the display matrix or battery. Also indispensable will be a suction cup, which allows you to create an initial gap between the case and the lid.
- 🔧 Screwdriver kit: cross PH000 and PH00 hull-board.
- 🔥 Thermophen or building hair dryer for softening glue.
- 💳 Plastic mediators (scapula) for opening the body without scratches.
- 🧲 Magnetic mat or organizer for sorting screws.
- ✂️ Thin metal scalpel or blade for primary undermining.
Workspace organization is half the success. Spread screws can get lost, and their dimensions are often identical in modern smartphones, but the length of the thread may vary. Using a magnetic mat or a simple piece of paper with painted cells will help you not confuse the fasteners of different nodes.
☑️ Preparation for disassembly
Removal of the back cover and access to the insides
The first step in the process of dismantling the Redmi Note 8T is the extraction of the tray for SIM-This is a mandatory procedure, because the tray blocks the opening of the case and can damage the slot when you try to remove the lid. Use a special clip included in the kit or a thin sting of the screwdriver.
Next comes the most important step: the separation of the rear glass panel, the glue that fixes it requires careful heating along the entire perimeter, do not focus the flow of hot air at one point for more than 3-4 seconds to avoid local overheating of the internal components, evenly warm the edges of the device for 2-3 minutes.
Once heated, apply the suction cup to the bottom of the back cover, just above the logo, and pull up to create tension. Insert a plastic mediator into the gap. Don't use force; if the lid doesn't lend itself, add a little more heat. Drive the mediator along the perimeter, cutting the adhesive layer.
- 🌡️ Heat the perimeter to a temperature near 80-90 degree.
- 🚫 Don't put the tools in any deeper. 3-4 mm to avoid damage to plumes.
- 🔄 Move around in a circle, gradually freeing up all sides.
When the lid is completely separated, don't try to pull it up sharply. Inside, there may be thin plumes going to the buttons or sensors, although in this model the main switching is on the motherboard. Carefully lay the glass on the prepared clean surface.
What to do if the cover is broken when removed?
Dismantling the protective panel and disconnecting the plumes
When you remove the back cover, you'll see a black plastic panel covering the main components, and it's mounted with multiple screws of different sizes. The Xiaomi Redmi Note 8T uses screws of different lengths even within a single node, so it's critical to remember or record them on a diagram.
At the bottom of the device, under the speaker, there are often additional screws that need to be unscrewed before removing the main panel. Also, pay attention to the screws hidden under stickers or rubber plugs, if they are present in your modification. Unscrew the entire fastener, gently lift the panel.
The first thing you do after you take off the panel is to turn off the battery, and that's the golden rule of electronics repair, find the battery connector and gently snap it off with a plastic blade, and only after you turn off the battery can you safely disconnect the plumes of the display, the cameras, and the other modules.
| Component | Location of the plume | Type of attachment | Features |
|---|---|---|---|
| Battery | The bottom of the fee | Latcher. | First to turn off |
| Display. | Central zone | Latch + press | Fragile, requires caution |
| Main camera. | Upper right corner | Latcher. | Don't touch the lens. |
| Button plume | The bottom of the fee | Latcher. | Thin and sensitive |
Disconnect the plumes strictly perpendicular to the board, swinging the connector from side to side minimally. A sharp jerk upwards can tear the contact pad from the textolite, which will lead to complex and expensive repairs. Use antistatic tweezers for ease of operation.
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When you turn off the display plume, slightly lift the metal fixing frame (if any) so as not to damage the contacts.
Removal of the battery and replacement of elements
In the Redmi Note 8T, the battery is located at the bottom of the body and is closed with an additional metal or plastic frame, which is also part of the cooling and mounting system of the board. To access the battery, you will need to unscrew several screws holding this frame and disconnect the plume of the lower speaker.
The battery is glued to the body fairly firmly. Trying to pull it by the tongue or edges will deform the battery, which can cause fire or bloating. To safely remove it, you need to apply heating again to the battery area (through the body, if it is still in place, or directly if the frame is removed).
Use a thin plastic card or a special tape with adhesive base. Carefully swipe the tool under the battery, separating it from the adhesive layer. Movements should be sawing, without sharp jerks. If the battery is very inflated, exercise utmost care not to puncture the shell.
- 🔋 Heat the battery area to 60-70 glue-softener.
- 🧵 Use a dental floss or a special string to cut glue.
- 🧼 Clean the remnants of old glue before installing a new element.
When installing a new battery, make sure the contact group matches the connector on the board.Do not plug the battery until all mechanical parts are fully assembled, if possible, to be able to quickly turn off power in the event of a circuit.
⚠️ Attention: It is strictly forbidden to puncture or bend a lithium polymer battery. Damage to the internal structure can lead to instantaneous ignition of the contents of the battery.
Replacement of the display and touch screen
Replacing the display module in the Xiaomi Redmi Note 8T is one of the most common procedures. The screen here is attached to the perimeter of the glue and is additionally fixed by the frame. Depending on the type of module purchased (with or without a frame), the process may be different. The framed module is easier to replace, since you do not need to glue the matrix itself.
If you change only a glass or a matrix without a frame, you need to carefully separate the old broken module from the metal frame, which requires significant heating and thin tools. Be prepared for the fact that old modules often break when dismantled, but it is not critical to replace this.
When installing the new module, be sure to use a special glue B-7000 or similar adhesive for electronics. Apply it with a thin strip along the perimeter, avoiding contact with the camera optics and speakers. After installing the module, you need to fix it with rubber harnesses for 1-2 hours until completely dry.
Check the touchscreen and image before the final sealing of the case. Connect the plumes, turn on the phone and check the response to touch throughout the area, as well as the absence of broken pixels. Make sure that the proximity sensor is working correctly.
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The quality of the new display module directly affects the autonomy and brightness of the image. Cheap copies often have worse viewing angles and increased energy consumption.
Working with charging connectors and speakers
The lower board, where the USB Type-C charging connector and main speaker are located, in the Redmi Note 8T is a separate module connected to the motherboard with a flexible plume. Replacement of this node is required for charging problems when the phone does not see the cable, or when the speaker wheezes.
The replacement requires unscrewing the mounting of the lower part of the body, removing the vibrator, which often interferes with access, and disconnecting the antenna cable. The antenna wire is attached with a latch and requires careful handling: you need to pull on the metal tip, not on the wire itself.
Often the problem with charging is not the connector itself, but the oxidation of the contacts or the contamination of the port. Before replacing, try cleaning the connector with a toothbrush soaked in isopropyl alcohol. If this does not help, make a complete replacement of the bottom plume assembled.
- 🔌 Check the integrity of the antenna cable before assembly.
- 🧹 Clean the contacts with alcohol before installing the new module.
- 🔊 Make sure the speaker grid is not clogged with dust.
When assembly, make sure that the plume of the lower board is properly placed in the designated channel and not squeezed by the case. A compressed plume can cause a missing signal or a broken microphone.
Assembly of the device and verification of functionality
The final stage - the build of the Xiaomi Redmi Note 8T - requires a reverse sequence of actions. Make sure that all screws are returned to their places, especially those that fasten the motherboard, as their absence can lead to poor contact of the connectors or break the board when bending.
Before the back cover sticker, do the final test: check the cameras, vibration, speaker and speaker sound, Wi-Fi and cellular network. SIM-Check the brightness sensor and autorotate the screen.
To stick the back cover, use a new layer of glue. The old layer should be removed completely. Apply the glue uniformly, apply the lid and press the perimeter hard. Lock the device with rubber bands or loads for 30-60 minutes.
After assembly, take your time to put on the case. Let the phone lie down in the off state for about an hour for final glue polymerization and temperature stabilization. Turn on the device and check for no gaps between the case and the screen.