Modern smartphones such as the Redmi 7 Pro are highly integrated components, making their disassembly a complex process that requires precision and specialized equipment. The owner of the device may face the need to replace a broken screen, worn-out battery or charging port plume, but the standard design of a sandwich with adhesive connection creates additional obstacles to access the insides.
The main challenge of dismantling is that there are no screws in visible places, as the entire structure is held by a powerful adhesive compound around the perimeter of the rear panel. Thermoagraving is a critical step, without which the attempt to separate the glass will lead to guaranteed destruction and possible injuries to the hands with sharp shrapnel. In this article, we will look at each step of the procedure, paying attention to the nuances that are often silent in service centers.
It is important to understand that the self-disassembly of Xiaomi Redmi 7 Pro automatically voids the official warranty if it is still valid at the time of application. If you are not confident in your abilities or you do not have the necessary tool, it is better to trust the work to professionals, but for enthusiasts and those who want to save on repairs, this guide will be an indispensable assistant.
Tools and workplace preparation required
High-quality disassembly of the smartphone is impossible without a specialized tool, since the use of improvised tools such as knives or pins often leads to damage to the internal plumes or puncture of the battery. To work with the Redmi 7 Pro, you will need a minimum set that can be purchased at any electronics store or ordered online. Particular attention should be paid to the organization of lighting, since inside the case there are many small parts that are easy to lose or damage if you have a poor view.
The first and most important tool is the heat source, which can be a professional temperature-adjusted thermophen or, in extreme cases, a household heating pad. The heating temperature should not exceed 80-90 ° C, so as not to damage the display matrix and not deform the plastic elements of the frame. Medical alcohol or a special adhesive solvent is also necessary to facilitate the process of separation of the cover without the use of excessive physical force.
- 🔧 A set of screwdrivers with Phillips bits (PH00, PH000) and Torx for screw-twisting.
- 🎴 Plastic cards, mediators or thin metal blades for opening the body.
- 🌡️ Thermophen or heating pad for softening the glue layer.
- 🧲 Magnetic mat for sorting screws of different sizes.
- 🔋 Suction cup for primary rear panel removal.
The workplace should be clean, spacious and well-lit so that no small detail gets lost in the pile of carpet or dust. It is recommended to cover the table with a soft cloth that will prevent the phone from slipping and protect its body from scratches during operation. Remember that static electricity can disable sensitive electronics, so it is advisable to touch a grounded metal object or use an antistatic bracelet before starting work.
☑️ Checking readiness for repair
Removal of the rear glass panel
The initial stage of dismantling Xiaomi Redmi 7 Pro is the extraction of the tray for SIM-This is a map that allows you to lower the internal pressure and allow access to some fasteners if they are hidden, and then you turn off the device and put it down on the prepared soft surface. Turn on the thermophen and evenly warm the perimeter of the back cover during 2-3 minutes, constantly moving the hair dryer, so as not to overheat one point.
⚠️ Warning: Do not direct hot air directly to the camera or to the center of the case where the battery is located to avoid battery bloating or optical damage.
After sufficient warming up, gently attach the suction cup at the bottom of the back panel, receding about 1-2 cm from the edge, and pull up slightly, creating a small gap.Into the resulting slit, immediately insert a thin plastic card or mediator and begin slowly to lead the tool along the perimeter, cutting the softened adhesive layer. Movements should be smooth, without jerks, as the glass Redmi 7 Pro is fragile enough and can crack under uneven pressure.
Particular care should be taken in the upper part of the smartphone, where the plumes of the main modules pass under the lid and the fingerprint scanner is located. The plastic blade should not dive deeper than 3-4 mm so as not to touch the internal components. If you feel strong resistance, stop moving and reheat the problem area, as the glue could freeze unevenly.
What to do if the glass cracks when removed?
When all sides are unstuck, don’t rush to take the panel off, as it can be connected to the main body by a fingerprint scanner plume. In the Redmi 7 Pro, the scanner is often integrated into the back cover or connected through a short plume that needs to be gently detached. Only after all connections are completely free can the back panel be removed and the device’s internal filling be accessed.
Battery Dismantling and Moisture Protection
When you remove the back cover, you will see the interior of the smartphone, where most of the space is occupied by the battery. In the Xiaomi Redmi 7 Pro, the battery is attached to double-sided tape, which eventually loses its properties, but initially holds very tight. Before any manipulation of the internal components, the first thing you need to disconnect the battery plume from the motherboard to turn off the device and avoid short circuit.
Metal tools cannot be used to extract the battery, as a puncture of the lithium polymer cell will cause the ignition and release of toxic substances. A plastic card or a special hood is the only true tool for this operation. It is recommended to slightly warm the battery area through the open space (if the design allows) or use isopropyl alcohol by dripping a couple of drops under the edge of the battery to dissolve the glue.
| Component | Location. | Type of attachment | Risks in dismantling |
|---|---|---|---|
| Battery | Central lower part | Adhesive tape | Puncture, fire. |
| Maternity fee | Upper part | Screws, plumes. | The plume break |
| Back cover. | Outer hull | Perimeter glue | Breaking glass |
| Camera module | Upper left corner | Landing place | Lens contamination |
Along the perimeter of the body, you will notice a black rubber gasket, which is responsible for protecting against dust and splashes (IP standard). When disassembling, it often deforms or unstuck, which requires subsequent replacement or restoration of leakage. For the Redmi 7 Pro, it is critical to restore the adhesive layer around the perimeter, since without it, the structure will lose rigidity and moisture will enter.
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Use a special adhesive B-7000 or T-7000 to reassemble, apply it in a thin strip on a low-fat surface and let it dry for 1-2 minutes before joining the parts.
Removal of motherboard and plumes
The motherboard in the Redmi 7 Pro is closed with an additional protective frame or metal screen that is attached to several screws. Before twisting them, you need to disconnect all visible plumes going to the display, the main and front cameras, and the lower sub-module (charging board).
Detachment of the plumes requires delicacy: use a plastic blade or nail, putting the connector strictly upwards, not on a fracture. The display plume is the widest and most noticeable, its damage will lead to the appearance of stripes on the screen or complete absence of image. After disconnecting all communications, you can twist the screws that hold the board, and carefully remove it from the case, holding the camera module.
- 📷 The camera’s core module can have optical stabilization, so avoid shaking and bumping.
- 🔌 The plume of the charging port often runs under the battery or along the edge, be careful when removing it.
- 🎤 Microphones and speakers can be integrated into boards or put into separate modules.
When installing a new board or returning an old one, make sure that all the connectors fall into place before the click. Often, the phone does not turn on due to an incomplete battery connector or display. Visual control of the landing of all the elements is the key to successful assembly.
Replacement of the display module and touch screen
If the purpose of the disassembly was to replace the broken screen, the Xiaomi Redmi 7 Pro uses a modular design where the matrix and touchscreen (glass) are combined into a single unit with a frame. This simplifies the replacement process, since it does not require the use of a separator and glue to reglaze the glass, but increases the cost of the spare part. The old module is removed after turning off the plumes and twisting the screws around the frame.
The new display module, before the final installation, should be tested simply by plugging the plumes into the board and turning the phone on without gluing it, making sure there are no broken pixels, the touchscreen is working correctly, and there are no color rendering problems. The quality of the matrix in the aftermarket market can be very different from the original, so check is mandatory.
⚠️ Note: When installing a new module, do not press the center of the screen to squeeze out air, as this can damage the liquid crystals.
The final assembly is done in reverse order: first, the frame with the display is fixed, then the plumes are connected, and only after successful testing, a new glue is applied and the back cover is installed.
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Always check the performance of all smartphone functions (camera, sound, vibration, sensor) before the final gluing of the case.
Assembly of the device and checking leakage
The final step is to build the Redmi 7 Pro, which requires attention to detail and consistency. After installing all the internal components and connecting the plumes, apply a new layer of glue to the rear lid seat. Use a quality electronics glue that remains elastic after drying, allowing the device to open again in the future if necessary.
After gluing the lid, it is recommended to lock the smartphone with several rubber rings or put it under a press (for example, under a stack of books) for 1-2 hours to polymerize the glue. At this time, it is better not to turn the phone on to let all the components "settle" and the glue grip.
Once fully assembled, turn the device on and do a comprehensive check: take a few photos, check the sensor across the area, listen to the sound in the headphones and through the speaker, and check the vibrator. If all functions are working properly, you can consider the process of disassembly and repair successfully completed.