Modern smartphones like the Xiaomi Redmi Note 8T are designed with high density layout, making them difficult to repair but doable with skill. Users often face the need to replace broken display glass or an expired battery. Disassembly requires not only physical tools, but also a clear understanding of the sequence of actions to avoid damaging fragile plumes.
In this guide, we will go into detail about the process of opening the case, dismantling the main components and proper assembly. It is important to understand that any interference with the design of the gadget will void the factory warranty. If you are not confident in your abilities, you should contact an authorized service center. However, for enthusiasts, self-repair can be a way to save money and extend the life of your favorite gadget.
The workplace must be well lit and free of unnecessary objects, so as not to lose small screws. Static electricity can damage the motherboard, so it is recommended to use an antistatic bracelet or periodically touch a grounded metal object.
⚠️ Warning: Before starting any work, be sure to turn off the smartphone. Attempting to disassemble the connected device with the battery can lead to a short circuit and irreversible failure of the electronics.
Quality preparation is key to successful repairs. For the Redmi Note 8T, you will need a specific set of tools, since standard screwdrivers will not be enough. The smartphone body is assembled using glue and hidden screws, which requires accuracy. Without the right equipment, there is a great risk of crumbled back panel or damage the display module when you try to remove it.
The main tool will be a set of precision screwdrivers. You will need cross bits of the size of PH000 and PH00, and you can also do without plastic blades (mediators) and suction cups for neatly peeling off the lid. Metal tools are best avoided when working with the screen and plumes, as they easily scratch the surfaces and can penetrate the insulation.
A household hair dryer may not give you enough temperature, so it is better to use a professional temperature-adjusted thermophen or a special heating pad. The temperature regime should be within 80-90 degrees Celsius to soften the adhesive, but not melt the plastic elements of the case.
- 🛠️ A set of precision screwdrivers (cross, flat, Torx)
- 📱 Plastic mediators and shoulder blades for opening
- 🌡️ Hair dryer or heater plate for softening glue
- 🔍 Tweezers with curved ends for working with small details
- 🧲 Magnetic screw-sorting mat
⚠️ Warning: Do not heat the area around the camera and fingerprint sensor too much.High temperature can damage the optical stabilization of the lens or sensor.
Removal of the back cover and primary access
The Redmi Note autopsy process 8T It starts with the rear glass panel being removed, and it's glued around the perimeter with a special adhesive that loses its properties when heated. SIM-So you can look at the perimeter of the device and look at the visible screws, and you can see that there's no screws on the surface, it's all hidden under the glass.
Heat the edges of the smartphone with a hair dryer, evenly warming the glass for 2-3 minutes. Don't hold the hair dryer at one point for too long, move it around. After warming up, insert a suction cup at the bottom of the back cover, slightly pull up, creating a gap. Insert a plastic mediator into the resulting gap gently and start leading it along the edges, cutting the glue layer.
Move slowly, constantly warming up areas where the glass is difficult to leave. Pay special attention to the corners, because there the glue often hardens. The back glass is very fragile, and under high pressure with the mediator it can crack. If you plan to use the old cover again, act with utmost care.
📊 What is the reason for disassembling your smartphone?
Screen replacement
Battery replacement
Dust cleansing
Curiosity
Other
When the lid is completely detached, don't try to remove it completely right away. It can have plumes attached to it, like a fingerprint sensor or an LED flash, unless they come in separate modules. In the case of the Redmi Note 8T, the fingerprint scanner is often integrated into the button or located separately, but the side key plumes can be attached to the frame. Carefully bend the lid and check for connections.
What to do if the back cover is broken?
If the glass is cracked but is held on to the glue, don't try to remove it completely at once. Plug a wide tape over it so that the shards don't fly apart, and carefully remove the glass residues to clean the frame. For a temporary solution, you can use a transparent film or order a new back panel. After removing the back cover, you'll have an internal layout. Most of the space is occupied by a battery. Unlike the old models, the battery doesn't have easily accessible retangible tongues to extract and you need to order a new battery panel, which will be used to cover the mainboard with a special solution, and a plastic plate, which will be used to be used first to cover it from the plate, and then to be removed from the plate, with a specially, to be used for the solution. It's usually fixed by a few screws. Once the power is out, you can safely work with other components. Unscrew the screws that hold the bottom plastic panel where the speaker and the charging connector are located. You can use a thin plastic card or a special tape to remove the battery. You can dent the edge of the battery and slowly drive the tool underneath, trying not to pierce the lithium-ion cell. A puncture of the battery can cause it to burn. If the battery is sitting very tight, warm up the case slightly in the battery area with a hairdrier. Component Type of fastening Risks in dismantling Tools Glue Glass Fen, Suction Battery Stick Tape Puncture, Fire Plastic Card Motherboard Screws Tweezers, Screwdriver Screen Glue, Frame Breaking matrix Heating, suction ⚠️ Warning: Never use metal tools to tamper with the battery.Metal can close contacts or damage the battery shell, leading to a chemical reaction.Replacement of display module and touchscreen Replacement of screen with Redmi Note 8T — And one of the most difficult things is that it's glued to a frame around the perimeter, and often the screens are sold as framed, which makes it much easier. + matrix, you will have to glue it from the old frame, removing the remnants of the old glue, which requires high accuracy. To remove the screen, you need to unscrew all the screws around the perimeter of the internal frame and remove it. Then unplug the display and touchscreen plumes from the motherboard. Heat the front of the smartphone to soften the glue under the screen. Use the suction cup and mediators to separate the broken module from the frame. The new display before installation must be checked for operability by simply connecting the plumes to the board without gluing. Make sure that the image is displayed correctly and the touch screen responds to touch. Only after successful verification, apply a new suction module and apply a B-7000 pre-layer to the frame. 💡 Heat the screen evenly, avoiding local overheating of the matrix 💡 When installing a new module, make sure that the plumes are not clamped with a frame. 💡 Let the glue dry for several hours under load for reliable fixation Working with the motherboard and cameras Motherboard in Xiaomi Redmi Note 8T It's located at the top of the housing, and it's covered with a metal screen and plastic pads, and you have to remove all the screws you can see to access it, and you have to gently snap the plastic locks, and you can have additional screws underneath the metal screens that hold the board. The main difficulty with the board is a lot of small plumes. Cameras, button plumes, display and charging port are connected to different connectors. When you turn off, use a plastic shoulder blade or nail, avoiding jerks. The main camera module can be attached to the glue or held by the density of the fitting in the connector. If your goal is to replace the charging connector, often you do not need to remove the entire motherboard. Just disconnect the plume from the bottom board (where the USB-C connector is located) to the main board. The lower board is attached with screws and is easily removed after removing the speaker. How to clean the speaker's speaker from the dust? If the sound has become quiet, try to clean the speaker mesh with a soft toothbrush. Don't use liquid to ensure that the pins are not closed back into the fis, you can easily remove the plug into the device from the fis. Pay special attention to the stacking of the plumes — they should lie in their channels and not be stretched. Before the final sticking of the back cover, turn on your smartphone and check all the functions: sound, vibration, cameras, Wi-Fi, Bluetooth and fingerprint sensor. If everything works correctly, apply a new layer of glue to the frame or use a special tape to fix the back cover. Press the lid around the perimeter and lock the smartphone with rubber bands on the back. 15-20 After assembly, it is recommended to reset or calibrate the sensor if the display has been replaced. Calibration is often required for the correct brightness and color reproduction. 💡The quality of the assembly depends on the cleanliness of the internal components. Before closing the lid, blow the body with compressed air to remove dust and villi. 8T hairdryerless? Theoretically, you can use special adhesive solvents, but it's extremely risky. The liquid can leak in and damage the electronics. Heating is the safest and most effective method of softening the adhesive layer. Should I remove the battery when changing the screen? It is advisable to disconnect the battery plume from the board before any display work to avoid short circuit. Full battery extraction is only required if you change the battery itself or it interferes with access to the plumes. Which glue is best used for the back cover? The best option is glue. B-7000 or E-8000. They have good adhesion, they remain elastic after drying and allow you to reopen the device if necessary. 3M It's also good, but it's less convenient to apply to curved surfaces. What if you don't turn on the phone after you build it? Check the battery plume and power plume connection. Make sure the screws don't pass the plumes. Try plugging the device into the charger for a long time. If there's no reaction, maybe the power controller or the battery itself is damaged.