Modern smartphones of the line Redmi by Xiaomi are not only high performance, but also quite complex body design. Users often face the need to access the internal components of the device, whether it is replacing a broken display, a swollen battery or restoring a plume after a fall. The dismantling process requires accuracy, as manufacturers use special adhesives to ensure the tightness and strength of the structure.
Before you start any manipulations, it is important to understand that disassembling your smartphone almost always leads to the loss of the official warranty. If your device is in warranty service, it is better to contact an authorized service center. However, if the warranty has already expired or the case is not warranty, you can do the work yourself, saving a significant amount of money on the services of masters.
In this article, we will take a closer look at the algorithm, the tool you need, and the precautions you can take to open a Redmi phone without damaging internal plumes and electronic boards. The main challenge in disassembling modern Redmi models is to place a fingerprint scanner under the power button, which requires special care when cracking the side edges.
Preparation of the workplace and the necessary tool
You can't do a good job of disassembling without a properly organized space. You need a clean, well-lit table, preferably with an antistatic coating or a mat. Any dust or static electricity can cause irreparable harm to electronics, so you can't ignore this step.
To work with Xiaomi Redmi, you will need a specific set of tools that are not always in the home drawer.Standard screwdrivers may not be suitable due to the specific hidden-head screws used by the manufacturer.
- 🔧 A set of precision screwdrivers (mandatory presence of cross-shaped) P2 slit-and-slit)
- 🔥 Hair dryer or special heating pad for softening glue
- 💳 Plastic blade or mediator for opening the body
- 🧲 Magnetic mat or screw sorting container
- 🧤 Antistatic gloves and tweezers
Special attention should be paid to the source of heating. A normal household hair dryer may not give the desired temperature, and a building hair dryer, on the contrary, is easy to overheat the plastic. The optimal temperature for softening the glue is about 80-90 degrees Celsius.
⚠️ Warning: Do not use metal tools (knives, blades) to first open the perimeter of the case. Metal can damage the glass, scratch the frame or, worse, snack on the plume located immediately below the edge.
Primary actions: power cut and tray extraction
The first and most important step before opening a Redmi phone is to shut down the device completely.Working with the electronics under voltage can lead to a short circuit, especially if you accidentally damage the battery plume or display with a metal tool.
After turning off the smartphone, you need to remove the tray for SIM-This action not only frees up space, but also often changes the rigidity of the structure, allowing the housing to be more easily subjected to heat and mechanical stress. In some models, the screws of the mounting can be hidden under or near the tray.
Make sure that the device is free of any external accessories: covers, protective glasses (if they interfere with access to the edges) and rings-holders.
⚠️ Warning: If the phone is on, wait for the processor to cool completely before heating. A sharp temperature difference (heating a hot phone that is running or just turned off) can lead to microcracks in the glass or detachment of tin on the board.
☑️ Preparation for disassembly
Heating the perimeter and removing the back cover
Modern models of the Redmi Note and Redmi series have a rear panel glued around the perimeter with a special polymer composition. To remove it, you need to evenly warm the ends of the device. Keep the hair dryer at a distance of 3-5 cm from the body, constantly moving it so as not to overheat one point.
The heating process usually takes 2 to 5 minutes depending on the thickness of the glass or plastic. Periodically check the temperature with your finger (caution!) - the surface should become hot, but not burning. After sufficient warming, insert a plastic suction cup into the bottom of the back cover and slightly pull upwards, creating a gap.
Insert a plastic blade or mediator into the gap, and then drive the instrument along the perimeter, cutting the adhesive layer, don't try to pull the lid off by force, and if it doesn't, it's not warm enough and you need to get extra heat.
- 🔥 Heat the edges evenly, spending more time on the corners
- 👐 Use a suction cup to create an initial gap
- 🗡️ Move the mediator smoothly, without jerking
Exercise special care in the top of the smartphone, where camera plumes and displays are often located, running from the board to the modules.
Dismantling the protective plate and disconnecting the plumes
When you successfully remove the back cover, you'll see the inside contents, and most Xiaomi models have a plastic or metal plate underneath the lid that covers the motherboard and the battery, which is mounted with multiple screws of different sizes.
Unscrew all the visible screws that lock the protective plate. It's recommended that you spread them out in the order you twisted them out, or use a magnetic mat with a markup. The length of the screws may vary, and mounting a long screw into a short hole can break through the board.
When you remove the plate, you get access to the connectors, and the first thing you do is turn off the battery plume, and that will turn off the battery, and keep you safe when you're working with the other components, and then you can turn off the plumes, use a plastic blade or nail, and you can put the connector up from the bottom up.
After the battery is turned off, you can disconnect the plumes of the display, the main and front cameras, as well as the lower board plume (if it goes separately).
⚠️ Attention: The plumes in Redmi smartphones are very thin and fragile. Never pull the plume wiring itself, just the hard part of the connector. Damage to the tracks inside the plume will cause the module to fail.
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Take a picture of the screws and plumes before you turn off, and this will help you avoid confusion when you reassemble the device.
Removal of the battery and replacement of components
The battery in Xiaomi smartphones is usually glued to the body with double-sided tape. Removing it may also require heating the back of the device (now the inside of the case).
Use a thin line, a special map or a plastic spatula to carefully separate the battery from the frame. The movements should be progressive, "sawing" to cut off the glue layer. If the battery is very swollen, act with utmost care so as not to damage the shell.
Once the old battery is removed, clean the seat of glue residue with alcohol or a special cleaner. Install the new battery, making sure its connector matches the connector. Connect the battery plume to the board first, before installing the protective plate.
If your goal was to replace the display, then after disabling the plumes, you need to unscrew the screws that hold the frame of the display module, or gently snap the plastic latches around the perimeter of the screen, if it is held on them.
Comparison of the complexity of disassembly of different Redmi series
Xiaomi’s smartphone design is constantly changing, and the way you approach disassembling different series can be very different, and understanding these differences will help you assess the risks and complexity of the task ahead.
Below is a table showing the key features of disassembling popular lines.
| Device series | Type of back cover | Scanner location | Difficulty disassembling |
|---|---|---|---|
| Redmi Note (8-11) | Glass/Plastic (glue) | Side (in the button) | Tall. |
| Redmi (basic) | Plastic (latches + glue) | Back or screen. | Medium |
| Redmi K / Poco | Glass (strong glue) | In screen/Side | Tall. |
| Old models (Note 4-7) | Metal/Plastic (screws) | Behind. | Low. |
Models with a side print scanner require special care when flicking side faces. In older models with a metal body, it was often necessary to remove the plastic insert from the top first, which made it easier to access the screws.
What if the lid is not removed after heating?
Assembly and performance check
Once the components are replaced, the assembly phase begins, which requires the same care as disassembly. Make sure all plumes are connected before clicking and are fixed with clamping slats. Rotate the screws without undue effort, so as not to tear the threads in the plastic seats.
Before the final sticking of the back cover, it is recommended to conduct a primary test: connect the battery and start the device. Check the touchscreen, sound, vibration, cameras and communication modules. If everything works correctly, you can apply a new adhesive (B-7000 or special tape) and press the cover.
Allow the glue to dry for the time specified by the manufacturer (usually 1-2 hours) before actively using the phone or wearing tight covers.
- 🔍 Check all functions before the final gluing
- ⏳ Give the glue time to polymerize
- 🧹 Remove excess glue immediately after pressing
⚠️ Warning: If the phone doesn't turn on after assembly, don't panic. Check if the battery connector is tight. Sometimes it's enough to reconnect the battery to start the system. If the problem persists, the plume may have been damaged during assembly.
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Quality assembly depends on the purity of the surfaces and the correct order of connection of the plumes: first the battery, then the test, then the final sealing.