The Xiaomi Redmi 8 Pro is a challenge that owners face when replacing a battery, repairing a camera or cleaning connectors. However, the back of the device is not only attached to the latches, but also to the adhesive layer, and fragile plumes are hidden inside, and dismantling errors can lead to damage to the display, tearing off antenna contacts or even short circuit.
In this article, we will discuss three officially approved methods of removing the lid (heated, without it and for the “lazy”), list the necessary tools with Aliexpress links, and also show how to avoid typical errors – from overheating of the battery to breaking the plume of the fingerprint scanner. If you have never taken smartphones apart before, start by checking the warranty: opening the case will cancel it even with a careful dismantling.
⚠️ Critical warning: Redmi 8 Pro has a double adhesive layer under the lid, the main one (around the perimeter) and an additional one (in the battery area). Attempting to tear the lid off to the cold one in 90% of cases ends in a rupture of the plume NFC or damage to the antenna module. Use a hair dryer or iOpener!
Preparation: tools and security
Before you start, make sure you have everything you need. Xiaomi Redmi 8 Pro is a budget smartphone, but its design does not tolerate amateurishness.
- 🔥 Thermophen or iOpener (alternatively hair dryer with temperature adjustment to 80°C). Without heating, the glue will not become elastic and the lid will break.
- 🪛 Plastic mediators (0.38-0.76 mm) or guitar mediators. Metal blades scratch the body!
- 🧲 Suction cup (40-50 mm diameter) for the initial lifting of the lid, even from an old phone.
- 🔋 90%+ isopropyl alcohol to remove glue residues. Acetone or solvent is prohibited -- they corrode plastic!
- ⚡ Screwdriver T3 for screws under the lid (Redmi 8 Pro uses Y000 screws).
If you are planning a complete disassembly (for example, to replace the battery), additionally prepare:
- 📦 The screw tray (magnetic or with cells) - in the Redmi 8 Pro 12 screws of different lengths!
- 🔌 Tweezers for uncoupling plumes (better with curved ends).
- 📸 Photo-fixing smartphone – Remove the plume position before they are turned off.
⚠️ Warning: Do not use household knives, credit cards or screwdrivers instead of mediators! Even a slight metal pressure on the board can cause a short circuit due to the close proximity of the contacts to the case.
Method 1: Classic heated removal (recommended)
This is a good way to first open the case when the glue is still intact. The rule is: don't overheat! The optimum temperature is 70-80°C. At 90°C+ you risk melting plastic latches or damaging the battery.
Step-by-step:
- Turn off your smartphone and remove the SIM- card from the tray. The battery should be charged at 30–50%, which is a safe level to heat.
- Plug the tape on the perimeter display (a width of 1-2 cm), which will protect the screen if the mediator slips.
- Heat the cover with a hair dryer for 2-3 minutes, keeping it at a distance of 5-7 cm. Move the hair dryer around, paying attention to the corners - there is more glue.
- With a suction cup, lift the lid on the USB-C connector (no plumes there). If the suction cup doesn't hold, heat it up for another 30 seconds.
- Put the mediator in the gap, and carefully guide it along the body, snapping the clamps. Don't push too hard, the lid should "remove" with a slight resistance.
⚠️ Warning: If the lid doesn't lend itself to one of the corners, don't pull it with force! There's probably unheated glue or an unlatched lock. Heat the problem area for another 20 to 30 seconds and try again.
Will the body heat to 70–80°C?|
Is the display taped with scotch tape?|
Are the mediators and sucker ready?|
Is the smartphone turned off and removed? SIM-map?|
Is the initial state of the plumes photographed?-->
Method 2: Unheated (for experienced)
This is a good way to do it if you've removed the lid before and the adhesive layer is partially destroyed, and it's not recommended for the first opening, because there's a high risk of damage to the NFC plume or antenna module.
Algorithm of action:
- 🔧 Carefully insert the plastic mediator into the gap between the lid and the housing at the USB-C connector.
- 🔄 Keep the mediator smoothly along the side edge, trying to break the clamps, and the movements should be short and controlled.
- 🛑 If you feel a lot of resistance, stop and go to the heated method. There's probably still a lot of glue.
- 📱 After you snap 2 to 3 clips, try to lift the lid with a suction cup. If it doesn't respond, heat the corners with a hair dryer for 10 to 15 seconds.
💡 Tip: If the lid starts to "go away" but sticks in the middle, don't try to pull it off by force. Push the mediator on the other side, there's probably an uncloaked upper lock (there's the most of them).
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If the lid is "creaky" when pressed, it is a sign that the adhesive layer is not evenly heated. Before reassembling, remove the glue residue with isopropyl alcohol and apply a new layer of B-7000 (sold on Aliexpress).
Method 3: Lazy method (with risks)
This method is suitable for those who do not plan to keep the case tight (for example, when disposing of the phone or experiments).Do not use it if you are going to use the smartphone further - damage the antennas and seals!
What to do:
- Place your smartphone in the freezer for 15 to 20 minutes, making the plastic more fragile.
- Pull out the phone and slam your palm sharply on the back cover from the battery side, and the glue will become brittle and the lid may crack.
- Put the cracks in the mediator and remove the cover.
⚠️ Effects of consequences:
- 🚫 Breaching – dust and moisture will enter.
- 📡 Signal loss due to antenna track damage.
- 🔋 Risk of battery bloating when moisture is ingested.
What happens if you break the NFC plume?
What to do after removing the lid: disassembly and assembly
When the lid is finally removed, the internal structure of the Redmi 8 Pro will open before you. Here’s what you’ll see (see the table below) and how to proceed next:
| Component | Location. | Disassembly activities | Risks of error |
|---|---|---|---|
| Battery | Center, under black film | Disconnect the power plume first! Use a plastic shoulder blade. | Short circuit, bloating. |
| The fingerprint scanner plume | Under the battery, right | Carefully open the connector. | Contact break, broken sensor |
| Basic fee | Under the screen, 12 screws. | Unscrew all screws, remove the metal screen. | Damage to chips with careless extraction |
| Camera (4 modules) | Top part, under the lid. | Disconnect the plume, unscrew 2 screws. | Scratches on the lenses, shifting focus |
| Dynamician and microphone | Under the bars, under the bars. | Check the integrity of the grid, clear the dust. | Distortion of sound, loss of microphone sensitivity |
🔧 Important nuance: The screws in the Redmi 8 Pro are different lengths! If you mix them up when you build them, you can damage the board (the screw will rest on the components). Use a magnetic tray or stick the screws on the tape in order of twisting.
⚠️ Warning: If you've been removing the battery cover, don't use cheap ones without a thermal sensor. In the Redmi 8 Pro, the original battery has a built-in NTC- thermistor that controls the temperature. The battery without it can overheat and swell.
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When reassembled, apply the new glue only to the frame of the case, not to the lid! This will prevent the glue from getting on the plumes and contacts.
Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 8 Pro. Here are the TOP-5 misses and their consequences:
- 🔥 Battery overheating (temperature above 90°C) Result: The battery swells after 1-2 weeks.
- 🪛 Use of metal tools, result: scratches on the board, short circuit.
- 🧲 Suction too much (suction cup ripped off the plume) Result: fingerprint scanner is not working.
- 🔌 Undisconnected battery soldering result: burnt power controller.
- 📱 Loss of screws or entanglement. Result: the board is warped when assembled.
💡 How to minimize risks?
- 📹 Shoot video of the disassembly process, making it easier to repeat the actions in reverse order.
- 🔍 Use a magnifying glass to check plumes for microcracks.
- 🧴 Apply the B-7000 glue in a thin layer - the excess can fill the speaker.
How to seal the lid after disassembly?
If you remove the lid, you need to securely lock it when you reassemble it, and depending on the target, choose one of the options:
| Materials | Pluses | Cons | Cost (Aliexpress) |
|---|---|---|---|
| Double-sided 3M Scotch | Easy replacement, no residues. | Weak tightness, may be gone | ~100 rubles. behind the roll. |
| Glue B-7000 | Durable, waterproof. | It is difficult to remove on the next disassembly | ~ 150 rubles per tube |
| The original Xiaomi glue | Perfect compatibility | Honey, it's a long time. | ~500 rubles per set |
| Liquid glue LOCTITE | High strength, heat-resistant | It requires precise application. | ~300 rubles per bottle |
🔧 Recommendation: For temporary fixation (e.g., after-repair testing), use tape 3M. For permanent assembly, B-7000 or original glue. Apply glue only to the frame of the case, receding 1-2 mm from the edges to avoid filling the connectors.