Xiaomi Mi 8T is a device that has proven to be reliable, but time and accidental falls make their own adjustments to its operation. Often owners face the need to replace a broken display, worn-out battery or damaged plumes. Self-repair can be an excellent alternative to a service center if you have minimal skills with equipment and the appropriate tool. However, before starting the procedure, you need to clearly understand the risks and sequence of actions, since the internal layout of modern gadgets requires accuracy and accuracy.
The process of dismantling the case requires patience, as the manufacturer uses adhesive joints to ensure tightness and monolithic design. Incorrect opening can lead to damage to plumes, cracks in the back cover or even failure of the motherboard. In this article, we will take a detailed look at each stage of disassembly of the Mi 8T, paying special attention to the nuances that are often forgotten by beginners. It is important to prepare in advance so as not to interrupt the process halfway.
It is worth noting that self-interference in the design of the device usually deprives you of the right to warranty service. If your smartphone is still under warranty, we strongly advise you to contact an authorized service center. However, if the warranty period has expired or damage is not a warranty case, then competent disassembly will save a significant amount of money. Below we have prepared a detailed algorithm of actions that will help you safely disassemble the Xiaomi Mi 8T.
Preparation of the workplace and the necessary tool
Quality preparation is 90% of the success of any repair. Before you start disassembling the Xiaomi Mi 8T, you need to organize a comfortable workplace with good lighting. The table should be clean so that small screws and parts do not get lost and fall on the floor. It is recommended to use an antistatic mat or just a clean fabric that will prevent the device from slipping and protect it from scratches. The absence of dust is also critical, as it can get under the display or into the connectors.
You'll need a specialized toolkit to do this successfully. Using inappropriate items like knives or needles can cause permanent damage to the body and internal components. In particular, metal tools can easily damage the plumes or puncture the battery, which can cause fire, so it's important to get a quality toolkit designed specifically for mobile repair.
Here is a list of what to do before starting:
- 🔧 A set of precision screwdrivers (Pentalobe and Phillips) for unscrewing the screws of the body.
- 🔥 A hair dryer or thermophen to soften the adhesive layer under the back cover.
- 🏓 Plastic mediators or suction cups for safe opening of the body without damage.
- 🧲 Magnetic mat or container with cells for sorting screws of different types.
- 🧤 Dielectric gloves and tweezers for working with small components.
⚠️ Warning: Before starting any work, be sure to turn off the smartphone. Attempting to disassemble the connected device with the battery can lead to short circuit and combustion of the power controller.
Special attention should be paid to the organization of space for screws. Xiaomi Mi 8T uses screws of different lengths and diameters. If you confuse their places when Assembly, you can damage the thread or pierced the body through. It is recommended to photograph each step of the twisting or use a magnetic mat with markings, also do not be superfluous to have at hand isopropyl alcohol, which will help dissolve the residue of glue.
☑️ Ready for repair
Removal of the back cover and primary access
The first step in the process of disassembling the Xiaomi Mi 8T is to dismantle the rear glass panel, which is attached to a two-part glue that needs to be heated. Use a hair dryer at about 80-90 degrees. Warm the body perimeter evenly for 2-3 minutes, constantly moving the air flow so that the display matrix or battery does not overheat.
After warming up, insert the suction cup at the bottom of the back cover, closer to the center, and pull up slightly, creating a small gap. In the resulting gap, carefully insert a plastic mediator. Do not use force, the movements should be sliding along the perimeter. If the mediator is struggling, then the glue in this place has not yet warmed up, and the heating procedure must be repeated.
When working with the back cover, it is important to consider the following points:
- 🔥 The glass is fragile and can burst from uneven heating or excessive pressure by the mediator.
- 🔌 The fingerprint scanner plume is very thin and located close to the edge, the risk of damage is high.
- 🧪 The residues of glue are better removed immediately, using isopropyl alcohol and a soft napkin.
When the lid is completely separated, put it in a safe place, preferably in a special shape or on a soft fabric, so as not to scratch the surface. Now you will have access to the insides of the smartphone, where the main board, battery and camera module are located. However, it is too early to rush to remove the components — first you need to dismantle the protective plate.
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For more convenient work, you can use special suction cups with a retainer that will keep the back cover elevated while you work inside the case.
Dismantling the protective plate and disconnecting the plumes
The centerpiece of the Xiaomi Mi 8T's interior is a long metal plate that protects the connectors and holds the plumes together, and it's mounted with a lot of screws around the perimeter and in the center. It's going to require a thin cross screwdriver to twist them out. Careful, because the screws can be coated with varnish, which you need to gently scratch with the screwdriver's point before you unscrew them.
Once the plate is removed, you have access to the main connectors, and the first thing you need to do is turn off the battery, which is a critical step to ensure that you're safe to use the plastic blade to snap the battery connector off the motherboard, and only after it's turned off can you disconnect the display, touchscreen and camera modules.
When disabling the plumes, follow the following rules:
- 🔌 Bend the connectors strictly upwards, without pulling them to the sides so as not to break the latches.
- 📱 Do not touch the contact areas of the plumes with your fingers so as not to oxidize them.
- 👀 Carefully inspect the connectors for dust and debris before reassembling.
Once all communications are turned off, you can take out the motherboard, it can be held on extra screws or framed. In the Mi 8T, the board is compact enough to handle it carefully, and take it out by swaying slightly from side to side to free up the seats.
Nuances of connector work
Replacement of the battery and work with the glue layer
The battery in the Xiaomi Mi 8T takes up a significant portion of the internal volume and is glued to the body or frame. It also requires heating to replace it. If you change the battery, do not try to tamper with metal tools in any case - this is a guaranteed risk of puncture and fire. Use special plastic cards or strings to separate the layers.
Removing the old battery takes patience. Put a plastic card on the edge of the battery, and pouring isopropyl alcohol under it, gradually move deep. Alcohol dissolves the glue, making it easier to slide. The old battery must be disposed of in accordance with environmental regulations, since lithium-ion cells are dangerous to the environment.
When installing a new battery, pay attention to the following parameters:
- 🔋 The capacity must be consistent with the original (usually around the 3500-4000 mAh for this model).
- 📏 Dimensions must be exactly the same so that the battery does not hang and press on other components.
- 🔌 The connector should perfectly dock with the motherboard without distortions.
⚠️ Warning: Never use superglue or other aggressive chemicals to fix the battery.This can damage the case and create a fire hazard. Use only special adhesive tapes (B-7000 analogue).
Once the new battery is installed, it needs to be fixed in place, using special double-sided adhesive tapes that often come with the new battery, if they are not available, you can use narrow strips of special glue, the main thing is to ensure that the battery does not vibrate when the smartphone is running.
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Battery quality has a direct impact on battery life and voltage stability, and only use certified components from proven manufacturers.
Comparison of original and compatible components
When repairing Xiaomi Mi 8T often comes the question of choice of parts. There are many options on the market for displays, batteries and cases. Understanding the difference between the original parts and counterparts (copies) will help avoid disappointment after assembly. The original guarantees full compliance with all specifications, while copies can differ in color reproduction, capacity or materials.
Below is a table comparing the main characteristics of the original and compatible components for the Mi 8T:
| Characteristics | Original (OEM) | Quality copy | Cheap analogue |
|---|---|---|---|
| Quality of color reproduction | Perfect, bright colors. | Good, maybe a little bleakness. | Dull, distorted colors |
| Touchscreen work | Instant response | Minor delays | Frequent missed presses |
| Case materials | Tempered glass, metal | Medium-quality glass | Plastic under glass |
| Compatibility of SOEs | 100% | 95-98% | Possible system errors |
When choosing parts, always pay attention to labeling and packaging. Xiaomi's original components often have protective holograms and serial numbers that can be checked on the official website. Cheap counterparts may not have overheating protection systems or have less real capacity than claimed. Savings on important nodes such as a power controller or display often result in re-repairs.
If you're not sure where the part came from, you'd better pay for the original, which will keep your device running for a long time after repair, and in the case of a battery, the risk of using a low-quality copy is too high because of the potential danger.
Device assembly and final inspection
The Xiaomi Mi 8T is assembled in reverse order, but requires no less care. Before installing the back cover, make sure all plumes are securely connected and fixed with a downplate. Screw the screws cross-cross, gradually tightening them to ensure uniform pressure. Do not drag the screws, as this can lead to cracks in the glass or torn threads.
Before the final sticker on the back cover, it is recommended to run a test run. Connect the battery and display, then press the power button. If the smartphone is on, sound, vibration, sensor and cameras are working, you can proceed to the final stage. Apply a new layer of glue around the perimeter of the case and gently press the back panel.
Final checklist before the hull gluing:
- ✅ All screws are twisted and do not hang inside the body.
- ✅ The plumes are flat and not clamped.
- ✅ Cameras and speakers match the holes in the body.
- ✅ The screen has no stains and image artifacts.
⚠️ Warning: Let the glue dry during 1-2 When you put your phone under a small load (for example, a stack of books through a soft cloth), early use can lead to detachment of the lid and dust.
Once the glue is dry, wipe the body from the residues of the adhesive compound and check all the functions again. Successful assembly is a sign of your skill and attentiveness. Now your Xiaomi Mi 8T is ready for active use again.