How to remove the lid from Xiaomi Redmi Note 5 Pro: professional analysis

Smartphones series Xiaomi Redmi Note 5 Pro have proven to be reliable devices with excellent value for money, but even the most durable gadgets over time require intervention. Most often, the need to remove the back cover occurs when the battery is critically worn, which ceases to hold charge, or when the glass of the rear panel is broken. Self-disassembly allows you to save significant money on the services of the service center, but requires extreme caution and the presence of a specialized tool.

The process of dismantling the case in this model is not trivial, since the manufacturer used high-adhesion double-sided tape to seal and fix the elements. Wrong actions can lead to damage to the plumes, cracks in the glass or deformation of the frame. In this article, we will look at each step of the work in detail to minimize risks and perform the procedure efficiently.

Before you start to physically affect the case, you need to prepare a workplace with good lighting and antistatic coating, and ignoring safety rules at the initial stage often causes the motherboard to fail due to static electricity or short circuit.

⚠️ Before starting any work, be sure to turn off the smartphone and discharge the battery to the level 20-30%, Reduce the risk of fire in case of accidental battery damage.

Tools and workplace preparation required

You can't disassemble the right tools without the right tools, and you can't use any tools you can use like knives or pins because they can damage the internal components or scratch the screen, and you need a kit that will make it accurate and safe to manipulate small parts.

The main tool will be a thermophen or a professional smartphone heating pad, which is needed to soften the adhesive layer. If these devices are not available, you can use a household hair dryer, but its power may not be enough to evenly warm the entire surface, which will increase the risk of glass chipping when peeled off.

You will also need mediators or plastic blades to gently snap the case, and metal tools should be used with the utmost care, mainly for tampering with the frame, but not for moving inside the housing where the plumes are located.

• 🔧 A set of Phillips #00 and Pentalobe screwdrivers for twisting screws of different calibers.
• 🌡️ Thermophen, heating pad or powerful hair dryer to heat the adhesive layer.
• 🧩 Plastic mediators, shoulder blades and suction cup for opening the body.
• 🧴 Isopropyl alcohol or special solvent of glue (B-7000) cleaning.

Organize the space so that all screws and fine details fold into a magnetic mat or numbered cells.The screws in the Redmi Note 5 Pro are of different lengths and threads, and mounting a long screw into the hole for the short can pierce the motherboard, leading to fatal consequences for the device.

Heating and primary separation of the cover

The first and most important step is heating the perimeter of the rear panel.The glue used by Xiaomi solidifies at room temperature and becomes plastic only when heated to 80-90 degrees Celsius.Insufficient heating will cause the glass to crack when it tries to detach, and excessive can damage the display or internal components.

Warm up the smartphone’s ends evenly for 3-5 minutes, constantly moving the heat source. Don’t hold the hair dryer at one point for too long to avoid local overheating. Periodically check the temperature with your finger – the body should be hot but tolerant to touch.

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Use an infrared thermometer to monitor the heating temperature so that you do not exceed the 90 degree threshold, which is safe for OLED matrices and adhesives.

After warming up, gently insert the suction cup at the bottom of the back cover, closer to the edge, and pull up slightly, creating a small gap. In the resulting gap, immediately insert a thin plastic mediator or scalpel blade (acting very carefully) to fix the gap and prevent the glue from grasping again.

⚠️ Warning: Do not try to open the lid immediately after heating without creating an initial gap with a suction cup, the pressure of the blade on cold or insufficiently heated glass is guaranteed to lead to its destruction.

Move the mediator along the perimeter, gradually cutting the adhesive layer. Movements should be sliding, parallel to the plane of the screen, not directed inwards. Pay special attention to the corners where the adhesive layer is usually thicker and requires longer warming.

Dismantling the protective panel and access to components

Once the lid is completely separated from the frame, don't rush to put it aside.The fingerprint sensor plume may remain inside if it's built into the body, although in the Redmi Note 5 Pro, the scanner is usually located separately. Carefully inspect the interior of the removed panel for the plumes or antenna modules glued.

The next step is to remove the plastic shield that covers the bulk of the smartphone's interior, which is fixed by multiple perimeter screws and one or two connectors, and carefully unscrew all visible screws using a screwdriver of the appropriate size.

It's important not to put too much effort into it if the panel isn't removed.Maybe you missed the hidden screw under the sticker or didn't fully uncouple the adhesive layer.The plastic used by Xiaomi is fragile enough and can burst when bending.

Once the protection is removed, the battery, motherboard and camera modules are accessed, and at this point, you can see the main nodes that need maintenance. Notice the location of the antenna contacts, which are often pinned by screws to the body.

Disabling the plumes and retrieving the battery

Before you can remove the battery, you need to turn the battery off by disconnecting the connector from the motherboard, a critical step to prevent short circuits when working with other components, and the connector is usually located at the top of the board and closed with a metal plate.

Carefully bend or unscrew the metal screen that covers the plume connectors. Use a plastic blade to snap the connector. The movement should be directed upwards, not sideways, so as not to break the fragile contacts on the board.

After the power outage, you can start removing the battery. In the Xiaomi Redmi Note 5 Pro, the battery is planted on double-sided tape. To remove it, you will need to apply heating again (already through the screen or removed protection) and use a plastic card or a special spatula.

Put the tool under the battery, and slowly, progressively, cut the adhesive layer. Don't try to tamper with the battery at one end, it can break. Spread the force evenly throughout the area.

⚠️ Note: It is strictly forbidden to use metal tools for picking the battery, since the puncture of the lithium-polymer battery shell causes instantaneous fire and chemical burn.

Replacement of elements and reverse assembly

Installation of the new battery or other components is done in reverse disassembly order. Before fixing the new battery, make sure that the lodge is cleared of residues of old glue. The surface should be smooth and fat-free for better adhesion.

Use a special battery adhesive tape or a quality B-7000 glue to fix it, apply the adhesive with a thin layer, avoiding getting into the connectors and the camera, and allow the glue to dry a little (1-2 minutes) before the final installation.

When assembling the case, make sure all plumes are properly stacked in their ducts and not clamped.A mislaid plume can rub over time or cause artifacts to appear on the screen.Check all connectors to fit before the safety panel closes.

When twisting screws, observe the sequence and do not drag them.Plastic threaded inserts in the case of a smartphone are limited in resource and can be thwarted with excessive effort.Swipe the screws to light stop.

The final step is to stick the back cover together. Put a new layer of glue around the frame, align the lid and press it tightly all over the circuit. For better fixation, you can use stationery rubber bands, stretching them across and along the body for 15-20 minutes.

Typical errors and troubleshooting

In the process of self-repair, users often face a number of typical problems, one of the most common is ignoring the heat, which leads to broken glass. Remember, patience and proper temperature control are more important than the strength of the application.

Another common mistake is the loss or entanglement of screws. As mentioned earlier, screws of different lengths can damage the board. If the smartphone does not turn on after assembly, check if all connectors are snapped before the characteristic click.

Sometimes, after assembly, the fingerprint scanner or microphone stops working, which means that the plume has been pinched or the contact patch has been forgotten, you have to reopen the device and recheck the connections.

• 🔍 Cracks on the screen during disassembly - a consequence of insufficient heating or the use of metal tools.
• 🔋 The smartphone is not charged – perhaps damaged the plume of the charging port or the connector itself on the board.
• 📶 Bad signal – antenna contact is not pinned by a screw or displaced when assembling the body.

If you are faced with a situation where the phone stopped responding to buttons after assembly, try clamping the combination of power and volume buttons to enter Recovery mode. This will help diagnose whether the motherboard is working.

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The main secret of successful assembly is to take your time at the closing stage of the case and double check all connections before the final fixation of the lid.

Frequently Asked Questions (FAQ)