Xiaomi Redmi Note 8 Pro is one of the most popular mid-range smartphones, released in 2019. Despite the sturdy glass body of Gorilla Glass 5, over time, many users face the need to disassemble the device: whether it is a battery replacement, dust cleaning or repair after a fall. However, removing the back cover on this model is not an easy task. Unlike budget plastic smartphones, here the case is attached to glue and latches, and the wrong actions can lead to cracks in the glass or damage to the plumes.
In this article, we'll go through the whole process in detail, from tool preparation to final assembly. You'll learn what mistakes beginners most often make, how to minimize risks and what to do if the lid fails. We'll also compare the methods of disassembling with a mediator, suction cup and heat dryer so you can choose the best option. If you've never taken a smartphone apart before, don't worry: our step-by-step instructions with photos and videos will help you cope even without experience.
Preparation for disassembly: tools and security measures
Before you start removing the lid, make sure you have everything you need, and not having at least one tool can turn a simple procedure into a nightmare with a damaged body or internal components.
- 🔧 Plastic mediator (or guitar mediator) - for tidy lid tweaking. Metal instruments are prohibited!
- 🧲 Suction cup (preferably with metal ring) – helps create an initial effort to separate the lid.
- 🔥 Heat dryer (or normal temperature-adjusted dryer) - softens the glue. Optimal temperature: 60-80°C.
- 🧴 Isopropyl alcohol (90%+) — to clean glue residues. Acetone or solvents cannot be used!
- 📦 Container for screws – not to lose small parts (in the Redmi Note 8 Pro there are 12 pieces!).
- 🔋 New Adhesive Layer (optional) – If you plan to assemble your smartphone back, you will need to replace the glue.
Also, prepare the workplace: the desk should be clean, free of debris and small items that can get inside the smartphone. SIM-If the battery is swelling, it's best to leave the chips to the technicians, because the risk of short circuits and fires is very high!
⚠️ Warning: Do not use a knife or screwdriver to lash the lid! Even a small metal scratch on the glass can cause a crack in further use.
Step-by-step: how to remove the back cover without damage
Now, to the most critical stage, follow the instructions strictly on the steps, without missing a single point. If the lid does not respond, do not apply excessive force, you better warm up the glue again.
Step 1: Heating the body
Turn on the heat dryer and set the temperature at 70°C. Direct the air flow to the edges of the smartphone, holding the hair dryer at a distance of 5-7 cm. Warm up in a circle for 2-3 minutes, paying special attention to the corners - there is usually more glue. If you use a regular dryer, choose the "cold air" mode and reduce the speed of the blowing.
Step 2: Separation of the suction lid
Place the suction cup closer to the bottom edge of the smartphone (where the USB-C connector is located). Press it tightly and pull it up. If the lid is not moved, don't pull sharply! Reheat for another 1-2 minutes. Once the gap appears, insert a plastic mediator into it.
Heat the entire perimeter of the hull |
Suction cup tightly pressed against glass |
The mediator is ready and on hand.|
The battery is not swelled or deformed-->
Step 3: Careful passage along the perimeter
Slowly drive the mediator along the edge, separating the lid from the body. There are 3 problem areas on the Redmi Note 8 Pro:
- The top part (near the camera) - there are plumes, do not press hard!
- Lower corners – the glue may be thicker, additional heating will be required.
- The area around the fingerprint scanner - don't scratch the glass.
If the mediator gets stuck, don’t try to pull it out – gently swing left-right to loosen the glue.
⚠️ Warning: Do not insert the mediator deeper than 2-3 mm! Under the cover are battery plumes and antennas - they are easy to damage.
Step 4: Final Division
When the lid has moved 2/3 of the perimeter, you can gently lift it with your hands. If you feel resistance, go back to the heating of the problem areas. Place the completely removed lid on a soft surface (for example, microfiber) so as not to scratch.
What to do if the lid is cracked?
Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling the Redmi Note 8 Pro. We have collected the most common of them and will tell you how to prevent them.
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Use of metal tools | Scratches on glass, cracks, damage to plumes | Use only plastic mediators or special spatulas |
| Heat too much (>100°C) | Melting plastic clips, detachment of plumes, deformation of the battery | Control the temperature of the hair dryer and do not heat one area for longer than 20 seconds. |
| The lid's jittery. | Breakage of battery plume or antenna, cracks in glass | Act smoothly if the lid does not lend itself - heat further |
| Ignoring a bloated battery | Short circuit, fire, damage to the motherboard | At the slightest sign of bloating (cover curved, phone warms) contact the service |
Another common problem is that the adhesive layer is damaged when you build it, and if you don't replace the adhesive, the lid will dangle and dust and moisture will get inside the case, and for a secure fix, use double-sided 3M 9448A tape or a special glue for smartphones (such as the B-7000).
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If the volume or power buttons become less responsive after disassembling, check their mounting, and they are often fixed to small plastic latches that can move when the lid is removed.
When do you need to replace the back cover?
It's not always enough to just remove the lid -- sometimes you have to change it. Here are the signs that it's time to think about replacing it:
- 🔍 Cracks or chips – even minor damage over time can lead to complete glass collapse.
- 💧 Detachment of glue – if the cover dangles or makes creaks when pressed.
- 🔋 The signs of oxidation under the lid indicate moisture intake.
- 📱 Wireless charging is not working – often a damaged plume or metal plate under the lid is to blame.
The cost of the original cover for the Redmi Note 8 Pro is about 1500-2500 rubles, analogues - from 800 rubles.
- 📌 Glass quality – the original has the Mi logo and Gorilla Glass 5 marking.
- 🎨 Color matching – shades may differ from cheap replicas.
- 🔧 Compact - in the set should be glue and seals.
If you change the cover yourself, be sure to transfer to a new detail:
- Fingerprint scanner (if it is embedded in glass)
- Metal plate for wireless charging.
- Protective pads around the camera.
Smartphone Builder: How to Avoid Mistakes?
Putting the Redmi Note 8 Pro back together is often harder than making sense of it. Here are the key points to look out for:
- Check the plumes – make sure all connectors are tightly connected (especially the batteries and display).
- Clean the contacts - if there is oxidation on the connectors, wipe them with alcohol.
- Apply a new glue - evenly distribute it around the edges of the body, avoiding voids.
- Line the lid - before the final pressing, check that all latches have entered the slots.
After assembly, turn on the smartphone and check:
- 📶 The operation of the antenna (network signal, Wi-Fi, Bluetooth).
- 🔋 Charging (cable and wireless, if supported).
- 📸 Cameras and fingerprint scanner.
- 🔊 Speakers and microphone.
⚠️ Warning: If the phone doesn't turn on after assembly, don't panic. The battery or display may have gone off. Take it apart carefully and check all connections.
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The most common cause of failure after self-disassembly is a battery plume that is not connected correctly. Always start with it!
Alternative methods of disassembly (if nothing helps)
If the Redmi Note 8 Pro lid does not respond to standard methods, alternative approaches may be tried, but remember: they increase the risk of damage.
Method 1: Use of thread
Thin, strong thread (like a dental or guitar) between the body and the lid, carefully saw it as you move along the edge, which requires patience, but reduces the risk of damage to the latches.
Method 2: Softening of glue with alcohol
Apply isopropyl alcohol (90%+) around the perimeter of the lid with a syringe. The alcohol will dissolve the glue in 5-10 minutes, after which the lid will be removed more easily. Do not use acetone or solvents! - they will damage the plastic and rubber seals.
Method 3: Disassembly with string
This is a way for advanced users, where a guitar string or metal wire is heated and run along the body seam, the glue melts and the lid separates, and the risk is that you can overheat the plumes or the battery!
If none of the methods worked, the glue may have dried up completely, in which case it is better to contact a service center, where the lid will be removed using professional equipment (for example, an ultrasonic bath).