Xiaomi Redmi 8 Pro has proven itself as a reliable device with excellent autonomy, but over time, even the highest quality equipment requires intervention. The need to disassemble the gadget can arise for various reasons: replacing a broken display, installing a new battery or cleaning the speaker from dust. Despite the lack of official service documentation in the free access, the design of the device is repairable with the appropriate skills and tools.
It is important to understand that opening the case automatically deprives you of warranty service if the warranty period has not expired. The disassembly process requires care, since the internal components are located quite tightly and the plumes can be glued. In this article, we will take a detailed look at each stage of dismantling so that you can safely perform the necessary manipulations with your device.
Before you start, make sure you have a free space with good lighting. Any speck of dust that falls under the screen matrix can become noticeable after assembly, so cleanness of the workplace is critical. It is also worthwhile to prepare all tools in advance so that you do not interrupt at the most critical moment.
Tools and workplace preparation required
Quality preparation is key to successful repairs. The Redmi 8 Pro is characterized by the use of adhesive joints to fix the back cover, which requires the use of heat. You will need a dryer (industrial or household at maximum power), a suction cup and a thin mediator or plastic blade. Metal tools are best not used in the early stages, so as not to damage the glass or frame.
The screwdriver kit should include cross bits of different sizes, as screws in the design may differ. Tweezers with curved ends will help extract small parts and plumes from hard-to-reach places. Also remember to use an antistatic bracelet or just regularly touch a grounded metal object to remove static electricity from your hands.
- 🛠️ dryer or heat pad.
- 📱 Suction and mediator for opening the body.
- 🔧 Set of screwdrivers (cross and slit).
- 🧤 Antistatic bracelet or gloves.
Organize the workplace so that all screws are folded in order of their removal. Often, craftsmen use magnetic mats with markings or just a piece of paper that schematically draws the stages of dismantling, which will help to avoid the situation when the assembly is left “extra” parts.
⚠️ Warning: Do not use too aggressive heating, keep the hair dryer at a distance 5-7 overheating can damage the body. OLED-matrix.
Removal of the back cover and primary access
The first step is always to remove the tray. SIM-This must be done before heating, so as not to damage the tray mechanism with pressure from the inside. Then turn on the hair dryer and evenly warm the perimeter of the back glass panel during the course of the process. 2-3 Redmi glass. 8 Pro is quite strong, but the glue under it should soften to a state where it can be cut with a mediator.
Place a suction cup at the bottom of the back cover, closer to the edge, and pull up slightly, creating a small gap. Insert a plastic mediator into the resulting gap. Don't try to drive the tool deep at once, move along the perimeter, gradually cutting the adhesive layer. The movements should be sliding, not stabbing.
Be especially careful in the area of the camera module and the fingerprint scanner. The plumes that go to these components can be glued to the inside of the cover or pass very close to the edge.
What to do if the lid does not move?
Dismantling the protective plate and disconnecting the plumes
When you successfully remove the back cover, you'll see the inside of your smartphone, and most of the space is occupied by the battery, and there are plumes above and around it, covered by a metal protective plate, and this plate is screwed with many screws of different lengths, so it's important to remember which screw was twisted from where.
Use a magnetic mat or a cell container to sort screws. First, twist all the visible screws around the perimeter of the board and in the center, then gently lift the metal screen using a suction cup or plastic shovel, and underneath it are the connectors of the display, touchscreen and other modules.
The first thing you do is turn off the battery, find the battery plume, and gently bend the lock (if you have one), or just put the connector in a plastic tool, and only after you turn off the plug (motherboard) can you disconnect the display plume and the other components, and that will prevent short circuits.
| Component | Type of attachment | Features of withdrawal |
|---|---|---|
| Protective plate. | Screws (different lengths) | Requires memorization of the location of the screws |
| Battery | Glue base + connector | Turn it off first, warm it carefully. |
| Display plume | Latch connector | Strictly from below, do not pull |
| Camera module | Screws + connector | Fragile element, protect optics |
In some versions of Xiaomi, the plumes can be further fixed with black sticky tape, it must be carefully removed or bent without damaging the conductor itself. If the connector is sitting tight, you can sway it slightly from side to side, but without sharp jerks.
☑️ Safe shutdown
Removal of the battery and replacement of elements
The battery in the Redmi 8 Pro is glued to the frame pretty tightly. Removing it will require reheating. Warm up the area around the battery, trying not to direct the jet of hot air directly at it to avoid the risk of fire or bloating. The optimal temperature of the frame is about 80-90 degrees.
Use a special suction hood or, if not, a thin plastic card dipped in isopropyl alcohol. The alcohol penetrates the glue and dissolves it, making it easier. Put the map or fishing line under the battery and sawing movements separate it from the body. It is strictly forbidden to use metal blades to smack the battery, as puncture of the shell can lead to instantaneous ignition of lithium.
When installing a new battery, be sure to remove the remnants of the old glue from the frame. The surface should be clean and fat-free. The new battery is usually equipped with double-sided tape - remove the protective film and press the battery tightly to the case, paying attention to the edges.
⚠️ Warning: If the battery is swelling, do not press it too hard, damage to the shell of the swelling battery is dangerous chemical burn and fire.
After installing a new cell, take your time to close the lid immediately. Connect the battery plume and check if the device is charging and turning on, which will save time in case the new battery is defective or the connector is not in good contact.
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Use 99% isopropyl alcohol to dissolve the glue under the battery – it evaporates quickly and leaves no trace, unlike water or acetone.
Replacement of the display and touch screen
Replacing the screen with the Xiaomi Redmi 8 Pro is often done with the frame, since the pasting of the matrix in the factory is a complex process that requires special equipment (separator and laminator). If you bought a display module assembled with a frame, the task is simple: you need to transfer all the internal components from the old frame to the new one.
Start by removing the motherboard. After turning off all the plumes and twisting the screws, the board is carefully removed. Notice the bottom speaker and the vibrator, which can also be attached to the old frame and require repositioning. When you move the bottom plume (with the charging connector), be careful: it often goes through the entire length of the case.
Put the board in a new frame, making sure all the holes match. Connect the display plume, keeping the connector orientation in mind. Once connected, you can pre-check the image by touching the battery connector. If you have a picture and the touch is working, you can continue building.
Pay special attention to the sealing gasket around the chamber and speaker. If it is damaged or lost during the reshuffle, dust and moisture will enter the case. If necessary, use a new sealant or double-sided tape to restore moisture protection (although complete tightness at home is not possible).
⚠️ Warning: When you move components to a new frame, check the status of the speaker grid. If it's clogged with dust, clean it now while the housing is open.
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Purchase of a display module assembled with a frame significantly speeds up repairs and reduces the risk of damage to fragile plumes during gluing.
Assembly of the device and verification of functionality
The final step is assembly. You go in reverse: set up the safety plate, twist all the screws, plug in the plumes. Make sure that no wires are caught or clamped in the case. The gaps between the parts should be minimal, and the board itself should not be backfiring.
Before you stick the back cover, check the functions of sound, vibration, cameras, Wi-Fi and cellular. If everything works correctly, apply a new glue (B-7000 or special glue for screens) around the perimeter of the case. Let the glue dry slightly (1-2 minutes), then press the cover and lock the device with rubber bands for 15-20 minutes.
Don't turn the phone on immediately after assembly, let the glue be fully polymerized. The optimal drying time is 2-4 hours, but it's best to leave the device overnight, which will ensure reliable fixation and prevent cracks from appearing in the future.
- 🔍 Check the operation of all buttons (volume, on).
- 📶 Make sure to receive the network signal confidently.
- 🔊 Test the spoken and polyphonic dynamics.
- 📸 Take test pictures on all cameras.
If you find that the touchscreen or the microphone is not working after assembly, maybe some connector has moved away or been damaged during installation, in which case you will have to repeat the disassembly procedure, but based on the experience gained.