Smartphones from the Chinese manufacturer Flagship series often require the intervention of service centers even in case of minor breakdowns, but self-repair is possible with experience. The Xiaomi Mi 8 Pro device (also known as the Mi 8 Explorer Edition) has a unique transparent rear panel and a built-in fingerprint scanner, making the process of opening it technically difficult and risky.
The main difficulty is that the body of the device is assembled on a set of screws and tightly glued around the perimeter, and any careless movements can damage the plumes or the most transparent cover. Before starting to dismantle, you need to soberly assess your skills with small electronics and prepare a specialized tool.
In this guide, we will take a detailed look at each stage of disassembly, paying special attention to the nuances of working with the adhesive base and fragile components of the internal architecture of the gadget.
Tools and workplace preparation required
High-quality site preparation is the foundation of a successful repair, especially when it comes to premium devices with a dense layout.You will need an antistatic mat, good lighting and a set of precision screwdrivers, including cross PH00 and PH000, as well as special TP-shaped bits for screws inside the case.
It is critical to use a thermophene or professional heating pad to separate the display and back cover, as the B-7000 factory adhesive or similar compounds soften when heated, allowing the body to be safely opened. Do not try to use household hair dryers, they do not give enough temperature to work effectively.
Also prepare plastic mediators, a glass lifting suction cup and curved-end tweezers to extract small parts. Use metal tools with extreme caution to avoid damaging the plumes or shorting the board.
- 🔧 Set of screwdrivers (cross-crosses, TP, flat)
- 🌡️ Thermophen or heating platform
- 🛠️ Plastic blades and mediators
- 🧲 Magnetic screw-sorting mat
- 🧴 Clay. B-7000 or T-7000 assemble
⚠️ Warning: Before starting any work, be sure to turn off the device completely. If the screen is broken and does not respond to touch, try to press the power button on the device. 10-15 seconds for forced shutdown to avoid short circuit when the battery is disconnected.
Organize the space so that all tools are at hand and small screws are not lost. It is recommended to use a magnetic mat or container with cells, signing each stage of unscrewing, as the screws in the Xiaomi Mi 8 Pro have different lengths and threads.
Primary dismantling: withdrawal SIM-tray and back panel
The process of opening Xiaomi Mi 8 Pro begins with the extraction of the tray for the SIM-This allows you to avoid pressure on the frame of the case with further manipulation. Use a special clip or a thin sting to press on the tray hole located on the lower end of the device.
Next, soften the adhesive layer around the perimeter of the back cover, heat the perimeter of the device with a thermophen at a temperature of about 80-90 degrees Celsius for 2-3 minutes, constantly checking the temperature with your finger to avoid overheating the matrix or battery.
After heating, gently insert the suction cup at the bottom of the back cover and pull up slightly, creating a small gap. Insert a thin plastic mediator into the resulting gap and start slowly leading it along the faces, cutting the adhesive layer.
Pay special attention to the area around the camera module and the fingerprint scanner, where the glue can be applied more abundantly. Do not put excessive effort, if the lid does not lend itself, it is better to reheat the site.
- 🔥 Heat the edges evenly, avoiding the center
- 📏 Create a gap gradually, without haste.
- 🚫 Do not use metal blades deeply.
The unique feature of the Mi 8 Pro is a decorative motherboard-like sticker under transparent glass, which is also glued. If your goal is to replace only the battery, you do not need to remove this sticker, but if the rear glass itself is damaged, you will need jewelry work to repaint the decor.
Disassembly of the internal structure and disconnection of plumes
After successfully removing the back panel, you have access to a major array of components, which is covered by a plastic cover, which is also glued around the perimeter, and this covers protect the motherboard and the battery from dust and lock the plumes in the correct position.
To remove the internal defense, you need to unscrew a lot of screws around the perimeter and in the center. Remember the location of the screws, because they can vary in length, and twisting a long screw into a short hole can penetrate the board through.
The first step after removing the protection is to disconnect the battery plume from the motherboard, a critical safety step that prevents the components from being subjected to voltage when other modules are disconnected.
Sequence of disconnection:
1. Battery plume (lower part of board)
Display plume (top part)
3.A subscreen scanner plumeNext, gently disconnect the main display plume and camera connectors. Use a plastic shoulder blade or nail to avoid sharp jerks. The plumes in the Xiaomi Mi 8 Pro are quite thin and easily tear when handled carelessly.
⚠️ Warning: The plume going to the fingerprint scanner built into the screen passes under the battery and other components. its damage will cause biometric unlocking to fail, so be extremely careful when removing the battery.
Removal of the battery
The battery in the Mi 8 Pro is attached to double-sided tape, which loses its properties over time, but can hold very tightly when first opened. Don't try to put the battery on the top edge where the plumes are located - this is guaranteed to damage them.
The recommended method of extraction is to use a special hood with suction cups or gently squeezing the plastic card from the bottom of the device after pre-warming. Heating the back side (if the back cover is removed) or the screen (with caution) helps soften the glue.
If you use a plastic card, move it forward and return, gradually moving deep under the battery. Never use metal tools to swell the battery, as its puncture can cause lithium to ignite.
| Parameter | Meaning | Note |
|---|---|---|
| Battery model | BM3H / BM3J | Depends on the audit. |
| Capacity | 2900 mAh | Nominal |
| Tension. | 3.85 In | Typical. |
| Type of attachment | Adhesive tape | It requires heating. |
After removing the old battery, clean the seat of glue residues with alcohol or a special solvent.The new battery should be installed on fresh double-sided tape for reliable fixation.
☑️ Check before installing a new battery
Dismantling of the display module
Replacing the display with the Xiaomi Mi 8 Pro is one of the most difficult operations because of AMOLED technology and the built-in fingerprint scanner.The screen is glued to a frame around the perimeter, and removing it requires uniform heating and patience.
Heat the front of the device to 60-70 degrees. Be careful: overheating can damage the matrix or cause yellow spots. Use a suction cup and mediators, starting at the bottom, where the plume is usually located.
When lifting the display, it's important not to damage the fingerprint scanner plume that passes through the cutout in the frame and is attached to the bottom of the board. Often, this plume is glued to the frame and needs to be carefully peeled off as the module lifts.
- 🌡️ Uniform heating of the entire surface of the screen
- 🧵 Careful unsticking of the scanner plume
- 🧼 Cleaning the frame from old glue before installation
If you only change glass (touch scannet/polarization filter), you will need a separator and laminator, which is almost impossible to do at home.
Why is the scanner not working after the screen is replaced?
Assembly of the device and verification of functionality
The Xiaomi Mi 8 Pro is assembled in reverse order, but requires attention to detail. Before the final screw twisting and sealing of the body, an initial check of the operability of all systems is necessary.
Connect the battery plume, then the display plume, and start the device. Check the touchscreen, the color display, the cameras, the speakers, the microphone, and most importantly, the fingerprint scanner response.
If all systems are working correctly, turn off the phone, disconnect the battery, and proceed to final assembly. Apply the new B-7000 adhesive in a thin layer on the frame of the case and press the back cover, locking it with rubber bands for 15-20 minutes.
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After assembly, leave the phone on charge for 1-2 hours, not turning it on, which will help calibrate the power controller and correctly determine the level of charge of the new battery.
Wrap the screws cross-cross from center to edge to ensure that the cover fits evenly. Do not drag the screws to avoid tearing the thread in the plastic bushings of the case.
⚠️ Warning: Make sure all connectors are snapped to a characteristic click.A non-dirty connector can cause the phone to malfunction or shut down suddenly.
Frequently Asked Questions (FAQ)
Can you make Xiaomi Mi 8 Pro without heating?
What if the fingerprint scanner does not work after the assembly?
Should the battery be calibrated after replacement?
Which glue is better to use for gluing the back cover?
Will the phone be waterproof after repair?
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The Xiaomi Mi 8 Pro’s self-disassembly requires high precision and special tools, especially due to the complex design of the fingerprint scanner and transparent cover.