Replacing the battery, repairing the camera, or cleaning the cooling system are tasks that every Xiaomi Redmi 8 Pro owner will face sooner or later. But the first and most important step in any such repair is removing the back cover. This procedure seems simple, but in practice it harbors a lot of pitfalls, from hidden latches to the risk of damaging plumes or antenna modules.
Redmi 8 Pro
olivewood
glue-mount
three proven methods
watertightness
If you've never taken a smartphone apart before, don't rush to grab a mediator. First, consider your strength: the Redmi 8 Pro lid is not only attached to latches, but also to double-sided tape, and it's only 0.8 mm thick in the thinnest places. One wrong move will leave cracks on the plastic and there will be ripped plumes under the lid. But don't worry: even a beginner can handle the right approach in 20 to 30 minutes.
Preparation: Tools and Conditions for Safe Disassembly
Before you start, make sure you have everything you need, you can't save on tools, because a cheap plastic mediator will break down at the first moment, and a Chinese hair dryer will overheat the body.
- 🔥 Technical hair dryer (or household with temperature adjustment up to 80-100)°C. Alternative is iOpener (a gel bag heated in a microwave oven).
- 📱 Plastic mediators (0.15–0.2 mm thick) or specialized suction cups for smartphones.
- 🔧 Screwdriver. T3 (for screws under the lid) and tweezers with curved ends.
- 🧴 Isopropyl alcohol (90%+) for removal of glue residues and double-sided tape for reverse assembly (for example, 3M 9448A).
- 📦 Organiser for screws or magnetic mat - so as not to lose small details.
Also prepare the workplace:
- 🪑 Work at a table with a soft substrate (like a silicone mat) so you don’t scratch the screen.
- 🕒 Set aside at least 1 hour, the enemy's rush. If the lid doesn't give in, take a break.
- 📸 Take a picture of each step before the plumes are unplugged, which will save you the time you reassemble.
⚠️ Warning: Don't use metal tools (knives, screwdrivers) to lid the lid! Even the gentle pressure will leave microcracks on the plastic, which will eventually turn into full-fledged faults. Plastic mediators cost pennies, but will keep the body intact.
If you don't have a hair dryer, you can do without heating, but that increases the risk of damage to the latches, so use the mediator only in places near the power and volume buttons, where the lid is weaker.
Method 1: Removal of the heated cover (recommended)
This is a way for most users to minimize the risk of breakage, and the idea is to soften the glue with heat so that the lid can move without effort.°C. At 100.°C+ You can damage the battery or screen.
Step-by-step:
- Turn off the phone and remove it. SIM-The battery must be charged at 30 to 50 percent, which is a safe level for manipulation.
- Heat the edges of the cover with a hairdryer for 1-2 minutes, keeping it at a distance of 5-7 cm.
- Place the suction cup closer to the lower edge (near the connector). USB-C) And pull it up a little bit. If the lid doesn't lend itself, warm it up for another 30 seconds.
- Insert the mediator into the gap and carefully guide it along the edge, splitting the latches. Don't try to separate the lid completely, first release all sides.
- Remove the cover by holding it at the top edge (there are camera plumes and fingerprint scanner).
If the lid doesn't respond the first time, don't force it. You'd better repeat the heat. A common mistake is to try to tear the lid off with a jerk, which causes the fingerprint scanner plume to burst (it costs 1,500 to 2,000 to replace it). ₽).
Check the battery charge (30-50%)|
Cleaned it up. SIM-card|
Prepared all the tools.|
Heated the edges of the lid evenly|
Pulled the sucker smoothly, no jerks.-->
| Cover zone | Heating temperature | Risks of improper dismantling |
|---|---|---|
| Bottom edge (at USB-C) | 85–90°C | Damage to the charging connector or microphone |
| Upper edge (by camera) | 80°C | Breakage of the main camera plume or fingerprint scanner |
| Side edges (by the buttons) | 75–80°C | Plastic chips or button deformation |
| Corners | 90°C (maximum) | Melting glue with flowing inside the body |
⚠️ Warning: Do not touch metal elements with your hands after removing the lid - static electricity can damage the motherboard. Use an antistatic bracelet or at least touch an earthed object (such as a heating battery) before working.
Method 2: Removal without heating (for experienced)
If you don't have a hair dryer, you can try to decouple the lid in a cold way, which is risky, but it's possible with care. The rule is, don't push the center of the lid, just the edges where the latches are.
Algorithm of action:
- Insert the mediator in the gap between the lid and the body at the volume button (there the latches are weaker).
- Carefully drive the mediator along the side edge, slightly swaying it back and forth to separate the latches.
- Repeat the procedure for the opposite edge. Don't try to separate the lid completely - first release all sides.
- When the lid starts to "play", slap it with a sucker at the bottom edge and pull it up.
This method requires patience: on average, it takes 15-20 minutes to gently crack all the locks. If the lid does not lend itself, do not persist, you better find a hair dryer or contact the service.
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If the mediator creaks or gets stuck, moisten its tip with isopropyl alcohol, which will reduce friction and reduce the risk of scratching.
Note that without heating, the glue remains strong, so when you reassemble it, you have to carefully clean the residues and apply a new one, otherwise the lid will hang or fit loosely, which will violate the dust protection. IP53.
What to do after removing the lid: disassembly and precautions
When the lid is finally removed, the internal structure of the Redmi 8 Pro will open in front of you.
- 📷 Main camera module (48 MP) + 8 MP + 2 MP) with a metal frame.
- 🔋 Battery (4000 mAh) with connected plume.
- 📶 Antenna modules (black and silver stripes at the edges).
- 🖥️ Motherboard under metal screen.
- 👆 Fingerprint scanner plume (thin orange cable).
Before you touch anything, remember three rules:
- Do not unplug the plumes unnecessarily - each connector is designed for a limited number of connections.
- Don’t press the battery – it can swell or deform.
- Don’t touch the antenna modules – they are attached to a thin copper foil that is easy to tear.
If your goal is to replace the battery, first disconnect the plume from the motherboard (use plastic tweezers). To do this, gently put the black connector up. Don't pull the wires, just the connector itself!
How do you check if you have damaged the sleeves?
Reverse Assembly: How to seal the cover correctly
Putting the phone back together is half the success. If you put the glue wrong or you fix the latches poorly, the lid will creak, move away or let the dust pass. Here's a step-by-step algorithm.
Cleaning and preparation:
- Remove the remnants of old glue from the lid and body with isopropyl alcohol and cotton swab.
- Wipe the edges with a dry wipe - fat or moisture will worsen the grip.
Applying new glue:
- Use bilateral scotch 3M 9448A (0.13 mm thick) or liquid adhesive B-7000.
- Plug the tape around the perimeter of the lid, retreating 1-2 mm from the edge (so as not to interfere with the latches).
- For corners and places near buttons, use narrow stripes (2-3 mm wide).
Installation of the lid:
- Carefully put the lid in place, combining holes for screws and connectors.
- Start at the top edge (at the camera), then snap the sides by pressing your fingers.
- Twisting screws in order: bottom left → lower-right → The upper (to avoid distortion).
After assembly, check:
- 🔊 Do the speakers work (their lattice should not be covered with a lid).
- 📶 Is there a network (antenna modules should not be crumpled).
- 🔋 Is the phone charged (connector) USB-C don't hang out).
⚠️ Warning: If the phone overheats or discharges quickly after assembly, you may have damaged the heat paste on the processor, in which case you need to re-disassemble the device and apply a new paste (for example, Arctic). MX-4).
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Use only original or certified glue, and cheap glues can melt when heated or lose their adhesiveness after a few months.
Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 8 Pro. Here are the most common problems and ways to prevent them:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Overheating of the shell (>100°C) | Deformation of plastic, detachment of antennas, battery bloating | Use a heat-controlled dryer, warm for no longer than 2 minutes at a time |
| A sharp lid-break | Breaking the plume of the fingerprint scanner or flexible camera cable | Click the latches around the perimeter before removing |
| Use of metal tools | Scratches on the body, short circuit on the board | Work only with plastic or wooden mediators |
| Incorrect cleaning of glue | Poor fit of the cover, loss of dust protection | Use isopropyl alcohol and soft brush |
| Forgot to disconnect the battery before work | Short circuit when touching the screwdriver board | Always turn off the battery plume first thing |
If you do damage the plume or connector, don't panic. Most parts for the Redmi 8 Pro are available on AliExpress or service centers:
- 🔧 The fingerprint scanner plume: ~1 200 ₽
- 📷 Flexible main camera cable: ~1 500 ₽
- 🔋 Battery (original): ~2 000 ₽
- 📶 Antenna module: ~800 ₽
But remember, replacing plumes requires soldering work and experience, and if you're not confident in your abilities, you'd better go to the professionals.