Replacement of the back cover Xiaomi Redmi Note 8 Pro: the full guide

Modern smartphones, including the popular Xiaomi Redmi Note 8 Pro, are designed to be tight and monolithic, providing a pleasing look and dust protection, but making it much harder for the average user to access internal components. Unlike older phones with removable batteries, it requires a complete dismantling of the back panel, glued to a special industrial adhesive.

The most common case for opening the case is when you have a critical injury, such as cracks in the glass, getting moisture inside or replacing a bloated battery. It's important to understand that self-intervention automatically voids the manufacturer's official warranty. If your device is still in warranty service, it's wise to go to an authorized service center.

However, if you have the right skills, accuracy and tools, you can do it at home, and the main thing is to take your time and follow the algorithm of actions clearly so as not to damage the plumes or the frame of the smartphone itself. Below we will discuss in detail the process of preparing and dismantling the back cover.

Tools and workplace preparation required

Before you start physically affecting the case, you need to organize a workspace. The ideal option is a clean desk with good lighting, where the risk of dropping small screws or losing them is minimized. To work, you need a specialized set of tools that can be purchased from radio stores or ordered online.

The main heating element in this process is thermophene or, in a more gentle version, an electric heating pad for phones. Using household hair dryers for drying hair is often ineffective, because they do not provide enough temperature to soften the glue, you will also need a thin metal spatula, plastic mediators (openers) and a suction cup.

⚠️ Warning: Never use knives or sharp metal objects to first disconnect the glass unless you are confident in your abilities.One awkward movement can cause a deep cut to your fingers or the screen on the back to collapse.

For fixing screws and small parts, it is best to use a magnetic mat or container with cells, where you can sign each stage of disassembly. This will help avoid confusion, since the screws in the Redmi Note 8 Pro can have different lengths and threads.

• 🔥 Thermophen or heating platform for softening glue.
• 🛠️ Set of screwdrivers (cross-crosses) PH000, PH00) hexagonal.
• 🎴 Plastic mediators and thin metal spatula.
• 🧲 Magnetic mat or organizer for screws.
• 🧴 Isopropyl alcohol (IPA) liquid B-7000 glue-residue.

The process of heating and primary separation of the cover

The first and most important step is to warm up the perimeter of the back cover, and the adhesive layer used by Xiaomi remains solid and strong at room temperature, and to separate the glass from the metal frame, it must be heated to 80-90 degrees Celsius, and it is important not to overheat the device so as not to damage the internal components or the battery.

Turn on the thermophene and direct the hot air flow strictly along the perimeter of the device, avoiding prolonged focus on the center of the cover where the camera is located.The movements should be uniform and circular. The heating process usually takes from 2 to 4 minutes depending on the power of the equipment and ambient temperature in the room.

Once the body is warmed up, you can try to gently suck the suction cup at the bottom of the back panel, pull it up a little bit, create tension, and simultaneously inject a thin metal blade or mediator into the gap, and move the tool along the side faces, cutting the adhesive layer.

You should be very careful in the area of the main camera module, where the glass cover is very close to the insides, and the risk of damage to the lenses or plumes is as high as possible, in this area it is better to use only plastic tools and act slowly.

Dismantling the protective plate and disconnecting the plumes

Once the back cover is successfully separated from the body, you will see the interior of the smartphone, but you can't pull the battery or any other components right away. At the bottom of the device, blocking access to the battery and charging connector, there's a metal shield plate (screen glider), which is also screwed.

To access the insides, you need to unscrew all the visible screws that hold this plate. In the Redmi Note 8 Pro, the number of screws can vary, so check the perimeter carefully. Some screws can be hidden under stickers or plugs, although this model usually does not.

When the plate is removed, you can access the main camera module plume and the battery connector, and the first thing you need to do is turn off the battery, which is a critical safety step that shuts down the device and prevents short circuits when working with other components.

⚠️ Warning: Disable the battery plume only after removing the metal shield.Attempting to disconnect the connector under load or without removing the clamping plate may cause the plastic connector lock on the motherboard to break down.

Use a plastic blade or nail (if convenient) to snap the connector. The movement should be directed upwards from the board, not sideways, so as not to bend the contacts. Once the battery is turned off, you can carefully remove the module itself if you need to replace it, or continue working with other nodes.

• 🔌 Unplug the battery plume first of all actions.
• 📸 Be careful with the main camera plume, it is very thin.
• 🔩 Fold the screws in order of their twisting for convenient assembly.
• 🧤 Work in antistatic gloves or touch metal parts of the case to remove statics.

Cleaning the case of old glue

Installing a new back cover or re-sealing an old one is impossible without thoroughly cleaning the frames of the old glue. Remains of the adhesive create irregularities that will cause the new glass to not lie tightly, causing dust and moisture to enter the body.

To clean, use isopropyl alcohol (IPA) or a special glue removal fluid. Apply a small amount of the product on a napkin without a pile or a cotton pad and thoroughly wipe the entire perimeter of the metal frame. Do not pour the liquid directly onto the phone so it does not hit the speakers or connectors.

In hard-to-reach corners, you can use a wooden toothpick or plastic spatula, carefully scraping the hardened lumps. Metal tools at this stage are best avoided so as not to scratch the aluminum frame, which will worsen the adhesion of the new glue.

After mechanical and chemical cleaning, be sure to degrease the surface, which will ensure maximum adhesion of the new adhesive layer, the surface should be perfectly smooth, dry and clean to the touch.

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To remove particularly persistent glue residues, you can slightly warm the frame with a hairdryer after removing the lid, but do this very carefully so as not to damage the display from the back.

Installation of a new cover and sealing

The final step is to install a new glass or install a cleaned lid, using a special adhesive sealant (often sold in B-7000 or T-7000 tubes) or a ready-made adhesive circuit (bilateral scotch shaped body), the second option is preferable for beginners, as it provides a uniform layer around the perimeter.

If you use liquid glue, apply a thin continuous line around the perimeter of the frame, avoiding getting into the camera and speaker areas. Let the glue dry a little (2-3 minutes) so it becomes less fluid, then gently apply the cover. Line the gaps and press tightly around the perimeter.

To securely fix the smartphone, you need to pinch it in a special press or wrap it tightly with several stationery gums. The time for complete polymerization of the glue is from 1 to 2 hours, but it is better to leave the device under pressure overnight, only after that you can turn on the phone and check its performance.

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The quality of the final sealing depends on the thoroughness of cleaning the frame. Do not save time at this stage, otherwise the phone will lose its protection from dust.

Frequent errors and precautions

Inexperienced users often make mistakes during repairs that can lead to a device breaking down permanently. One of the most common is excessive force when bending glass. Redmi Note 8 Pro glass is strong but brittle at a break, especially in the bending zone.

Another mistake is ignoring battery shutdowns, and many people try to replace the vibrator or charging plume without turning off the system, which can cause the fuses on the board to burn or short circuits that require soldering and a microscope to repair.

Also worth mentioning is the risk of damage to the fingerprint scanner plume if it is integrated into a button or side face (although in this model, the scanner is at the rear).

⚠️ Warning: If you've damaged a plume or broken a screen during the disassembly process, don't try to glue the damaged parts with superglue. This will damage the electronics irrevocably. Replace the damaged component with a new one.

Compliance with technology and the availability of a quality tool is the key to successful repairs. Do not neglect safety measures and always check the integrity of components before the final assembly.

Questions and Answers (FAQ)