The Redmi 8 Pro (also known as the Redmi Note 8 Pro in some regions) remains a popular device, but over time, any equipment requires maintenance, and most often users are faced with the need to replace broken display glass or, more likely for this model, a worn-out battery. Self-disassembly saves a significant amount of money on services from the service center, if you have minimal skills with electronics.
The process of dismantling components of this smartphone has its own features related to the design of the body and the location of the plumes. The body of the device is made using a glass back panel, which requires increased caution when heating. Incorrect actions can damage not only decorative elements, but also internal modules, so it is important to strictly follow the sequence of operations.
Before you start, you need to prepare the workplace, it should be well lit, and the table is covered with an antistatic mat or just a clean cloth, and the absence of dust and foreign objects will eliminate the risk of losing small screws or getting debris under the display during the assembly process.
Preparation of tools and security measures
For a high-quality and safe disassembly, you will need a specialized set of tools. Using inappropriate items such as kitchen knives or needles often leads to damage to the body elements and injuries. The main tool will be a thermophen or a professional heating pad, allowing you to evenly warm the adhesive layer around the perimeter of the device.
The second critical element is suction cups and mediators: plastic cards or shoulder blades are necessary to separate the glass and frame without scratches. Metal tools are strongly discouraged during the opening phase of the case, as they can damage the plumes that pass directly under the side faces.
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Use a magnetic mat to sort screws, as the Redmi 8 Pro uses different length fasteners for different nodes.
Don't forget to protect the battery. Before any work starts inside the case, you need to disconnect the battery terminal from the motherboard, which will prevent short circuits that can occur when the display plume or other components are accidentally damaged by a metal tool.
- 🔧 Phillips screwdriver set (PH000, PH00) Torx (T2, T3) squirt.
- 🌡️ Thermophen or heating pad for softening the glue under the back cover.
- 📱 Plastic blades, mediators and suction cups for neat opening of the body.
- 🧲 Tweezers with dielectric coating for working with small connectors.
⚠️ Warning: Do not heat the body higher 80-90 degrees Celsius, so as not to damage OLED-(if any) the matrix (if any) or LCD-screen, and to avoid battery bloating.
Primary dismantling of the back cover
The first step in the process of how to disassemble the Xiaomi Redmi 8 Pro is to remove the rear glass panel.The smartphone must be turned off and removed tray SIM-After that, the device is placed on the heating pad screen down on a special substrate so as not to scratch the display.
Heated for 3-5 minutes at about 80 degrees. The glue should soften so that the suction cup easily sticks to the surface. If you fail to apply the lid, do not use force - it is better to add a little more heat than risk the integrity of the glass.
After a small gap between the frame and the glass, a plastic blade is carefully inserted into it, the movements should be sliding along the perimeter, gradually cutting the adhesive layer. Pay special attention to the area around the camera module, where the adhesive can be applied with a thicker layer.
When the lid is completely detached, it should be temporarily removed to a safe place, and underneath it you will see a protective plate covering the main components, and the battery itself, occupying most of the interior space, and at this stage you can already see the plumes coming from the buttons and connectors.
Removal of the protective plate and access to the plumes
And underneath the back, there's a metal plate that serves as a jamming shield and additional protection, and it's mounted with a lot of screws of different sizes and types, and you'll need a small cross screwdriver, usually a PH000, to twist them out.
It's important to remember the location of each screw, because they're of different lengths. Wrap a long screw into the hole for a short one can damage the motherboard right through, and it's recommended to use a magnetic mat with markings, or just lay the screws out in the same order in which they were twisted.
Once all the screws are removed, the plate is gently shoveled and removed to the side, and now you have access to the display, touchscreen, main and front cameras, and the battery connector, which is key to safely proceed.
☑️ Safe shutdown of plumes
| Component | Type of connection | Location. | Features of dismantling |
|---|---|---|---|
| Battery | Connector plume | Top of the pay | Requires disconnection in the first place |
| Display (LCD/OLED) | Wide plume | Central part | Fragile, afraid of clutter. |
| Main camera. | schleife | Upper corner | It often has a double connector. |
| Lower plume | Combined | The bottom part | Connects the charging and dynamics connector |
Removal of the battery and replacement of components
In the Redmi 8 Pro, the battery is glued to the frame fairly firmly. To extract it, you need to use a special suction box or carefully poke the battery with a plastic spatula, preheating the area below. Do not use metal tools to avoid puncturing the lithium polymer cell.
If you're planning to replace the screen, you need to unscrew the screws that hold the frame of the display module after all the plumes are turned off. In some versions, the screen can be glued to the middle frame, which will require additional heating and careful cutting of the glue along the circuit.
When installing a new battery, make sure the contact area on the plume is clean. Contact oxidation is a common reason why the phone doesn't see the battery or displays charge incorrectly.Wash the contacts with alcohol or a special cleaner before connecting.
What to do if the new battery is not charged?
So you do the reverse assembly, you start by plugging in the battery plume, then you plug in all the other components, and then you make sure that all the connectors are snapped to the right click, you can start by putting in the safety plate and twisting the screws.
⚠️ Note: When installing plumes, press strictly on the metal part of the connector, and not on the plume next to it, so as not to damage the current tracks.
Working with a display module and touch screen
Replacing the display is one of the most difficult operations. Redmi 8 Pro often uses encapsulation technology, where the touchscreen and the matrix are glued together, changing them separately at home is extremely difficult and risky, so usually you get a single module assembled with or without a frame.
If you bought a frameless module, you need to transfer all the components from the old broken screen to the new one. This includes a speaker, a vibrator, a button plume and a charging connector. Be extremely careful with the touchscreen plume, which is very thin and easily breaks at the slightest tension.
Before the final assembly, it is recommended to conduct a test turn on: connect the display and battery plumes, turn on the phone and check the touchscreen, the image on the screen and the sound, this will avoid re-disassembly in the event of a new spare part failure.
- 🖥️ Check the uniformity of the backlight and the absence of broken pixels on the new screen.
- 👆 Test multi-touch by testing in an engineering menu or a special program.
- 🔊 Make sure the speaker and vibrator are working correctly after the transfer.
Assembly of the device and checking leakage
The final step is to assemble the case, make sure that all screws are twisted, but not pulled, so as not to break the thread in the plastic bushings, and pay special attention to the plume that goes from the bottom board to the motherboard, it should lie exactly in its channel.
To stick the back cover, it is better to use a special glue sealant (for example, B-7000) or a pre-prepared adhesive frame. Apply a thin layer of glue around the perimeter, press the cover and lock the device with rubber bands for 15-20 minutes before primary polymerization.
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High-quality sealing of the back cover not only improves the appearance, but also provides basic protection against dust and splashes, prolonging the life of the internal components.
Once the glue is dry, turn the device on and run a final check of all the functions: cameras, proximity and light sensors, communication modules, and if everything is working properly, the disassembly and repair process can be considered successful.