Why do Redmi 8 owners have to open the back cover?
The Xiaomi Redmi 8, launched in 2019, is still a popular budget device, but over time, even these reliable devices have problems: battery drains, speaker breaks or a plume replacement is required. 80% of the time, you need to remove the back cover to repair it, which is not as easy as it seems.
The manufacturer uses glue and latches to make the lid fit tightly into the body, and without nuance, you can damage plastic clips, tear off a fingerprint plume, or even crack the camera glass, and this article will help you avoid errors and disassemble without specialized equipment, only with the help of improvised tools.
We'll look at three ways to remove the lid (with a mediator, a sucker, and no tools), break down the typical problems, and give you tips on reverse assembly, and at the end, we'll see an FAQ that answers frequent user questions.
What tools will you need to disassemble?
Before you start, prepare the workplace.
- π§ Plastic mediator (or guitar mediator) - for careful liding
- π§² Suction cup (better with a ring) β to create an initial effort
- π₯ Hair dryer or thermal pistol - to soften glue (optional, but recommended)
- π¦ Container for screws - so as not to lose small details
- π§΄ Isopropyl alcohol - for cleaning glue residues
If you don't have professional tools at hand, you can do with a plastic card instead of a mediator and tape instead of a suction cup, the main thing is not to use metal objects (knives, screwdrivers) that can scratch the case.
Preparing the phone for disassembly: 5 mandatory steps
Before you remove the cover, do these steps:
Turn off the phone and remove it. SIM-memory-card
Remove the cover and protective glass (if any)
Charge the battery by at least 30% (in case of accidental switching on)
Make a backup copy of the data
Prepare a clean surface (better with a soft substrate)-->
Pay special attention to the battery. In Redmi 8, it's glued to the lid, so if you uncanny it, you can damage the plume or the battery itself. If the phone hasn't turned on for several days, let it stand on charge for 10-15 minutes, which will reduce the risk of short circuit.
β οΈ Warning: Do not disassemble the phone in a wet room or on a metal surface. Static electricity can damage the motherboard.
Method 1: Removal of the cover with a mediator (the safest)
This method is suitable for beginners and minimizes the risk of damage.
- Heat the edges of the phone with a hair dryer (50-60Β°C) for 1-2 minutes. This will soften the glue. Don't overheat - the plastic can deform!
- Insert the mediator into the gap between the lid and the case at the USB-C connector. Carefully drive it along the edge until you hear the snap of the latch.
- Repeat the procedure around the perimeter, and be extra careful at the corners, because there are plastic clips.
- When all the latches are snapped, remove the lid, holding it by the top (there is a plume of the fingerprint scanner).
If the lid doesn't lend itself, don't use force. Better warm up the problem area with a hairdryer again. In Redmi 8, the most stubborn latches are near the volume buttons.
What to do if the mediator is stuck?
| Section of the hull | Number of latches | Risk of damage | Council |
|---|---|---|---|
| Lower part (USB-C) | 2 | Low. | Start right here. |
| Top part (camera) | 3 | High-pitched | Don't press the camera glass. |
| Left side (volume buttons) | 4 | Medium. | Warm up longer than usual |
| Right side (power button) | 3 | Low. | The latches are weaker than the left. |
Method 2: Use of suction cups (for experienced users)
This method requires skill, but allows you to quickly separate the lid. You will need a suction cup with a diameter of 3-4 cm.
Algorithm of action:
- Stick the suction cup to the bottom of the lid (above the Redmi logo).
- Carefully pull up, creating a gap of 1-2 mm.
- Put a mediator in the slot and lead it along the edge.
- Once the latches start to snap, remove the sucker and continue with the mediator.
The main mistake of beginners is to pull the suction cup too hard. In Redmi 8, the lid is attached not only to the latches, but also to double-sided tape, and a sudden movement can tear off the plume of the fingerprint scanner or damage the battery.
π‘
If the suction cup is not holding, moisten its edge with water or soap solution, which will improve the grip on the smooth surface of the lid.
Method 3: Untooling (emergency)
If you don't have a mediator or a suction cup, you can try using a plastic card and a tape recorder, which is risky, but sometimes it helps:
- Stick a piece of tape to the bottom edge of the lid (above the USB-C connector).
- Carefully pull the scotch upwards, creating a minimal slit.
- Insert the corner of the plastic card into the slot and lead it along the case.
- If necessary, warm the edges of the phone with your palms (body heat is sometimes enough).
This method has two serious disadvantages:
- High risk of scratching the body with a map.
- Scotch can leave sticky marks on plastic.
Use it only as a last resort!
β οΈ Warning: If the lid starts to creak when you take it off, stop right now! This sound means you hit the plastic clips.
Typical problems in removing the cover and their solutions
Even with a careful disassembly, it can be difficult.
- π The battery stuck to the lid. β Don't force it torn off! Push it with a thin plastic spatula, preheated with a hair dryer.
- π± The print plume broke. β If the phone turns on but does not recognize fingerprints, you will need to replace the plume (cost) ~500β½).
- π The speaker fell off the hull. β Stick it back on bilateral scotch or glue B-7000.
- πΈ The camera glass cracked. β Replace the camera module completely (price) ~1200β½).
If the phone does not turn on after removing the cover, check:
- Is the battery connected (sometimes the plume departs from the board).
- There is no visible damage to the motherboard.
- Integrity of flexible plumes (especially display and power buttons).
π‘
90% of the problems in disassembling the Redmi 8 are due to careless handling of the plumes. Always turn off the battery before manipulating the internal components!