The process of disassembling modern smartphones, especially popular Xiaomi and Redmi models, requires not only accuracy, but also an understanding of the internal architecture of the device. Many users face the need to replace a broken screen, battery or clean the speaker from dust, but do not know where to start and what tools will be needed. Errors at the initial stage can lead to damage to plumes or cracks in the glass, so it is important to clearly understand the sequence of actions before picking up a screwdriver.
In this article, we will discuss how to remove the case from the Xiaomi Redmi phone, paying attention to the nuances of attachment of various models. You will learn about the types of adhesive joints, how to safely turn off the plumes and methods to prevent static electricity.
Modern smartphones of the Chinese brand often use combined assembly methods, where plastic elements are combined with metal frames and glass panels. Understanding what material is used in your case is critical to choosing the method of heating and opening the case. We will look at the universal principles applicable to most devices in the Redmi Note and Redmi range, and point out the specific features of the top models.
Preparation of the workplace and necessary tools
Before any electronic manipulations are initiated, a comfortable and safe space must be provided, the light must be bright and directed so that small screws and details do not get lost on the table, and a white sheet of paper or a special antistatic mat is recommended, where all elements are clearly visible and where there is no loss of small parts.
The toolkit must be selected in advance so as not to interrupt the process of finding a screwdriver. Xiaomi most often requires a PH00 or PH000 cross screwdriver, a plastic spatula (mediator) and a suction cup. Metal tools should be used with extreme caution, as they can easily damage internal components or shorten contacts.
Pay special attention to the presence of a heat source. The glue that fixes the back cover or display softens under the influence of temperature, which greatly simplifies dismantling. This can be a professional dryer, a thermophene or, in extreme cases, a heating pad, although the latter two options are less effective for thermal adhesive formulations.
- 🔧 A set of precision screwdrivers (cross and flat)
- 📱 Plastic mediators and shoulder blades for opening
- 🌡️ Hair dryer or heating platform for softening glue
- 🧲 Magnetic mat or screw sorting containers
- 🧤 Antistatic gloves to protect against static charge
⚠️ Warning: Never start disassembling if the phone is connected to the charger or its battery is not turned off. Even when it is off, there may be a voltage on the board that can cause a short circuit when touching metal parts.
While removing the case does not erase information by itself, accidental damage to the display plume or memory controller can render the device unreadable, and save important contacts and photos to the cloud or computer before work begins.
Design features and types of fasteners Xiaomi
Xiaomi engineers use different build strategies depending on the model's price segment. Redmi series budget devices often have a plastic back cover that can either be removable (in very old models) or glued around the perimeter. More expensive models such as the Redmi Note Pro or the K series can come with glass panels that require even more delicate handling.
The main enemy in disassembly is bilateral tape or special glue, which is applied around the perimeter of the case. In some models, the glue may be present in the central part, especially if there is a wireless charging module or a special adhesive. NFC-Understanding the structure of the adhesive layer helps you choose the right heating tactics.
The interior structure is usually protected by a plastic frame or a metal screen that is also attached to the screws. These screws can be of different lengths, so it is crucial to remember or record the location of each one. A tangled long screw screw screw screwed into a short hole can penetrate the motherboard through.
The plumes in Xiaomi devices are often laid under protective plates or pressed by connectors. It is important to know that in some Redmi models, the display plume passes under the battery, which requires partial or complete removal to replace the screen.
Removal of the back cover and removal of the battery
Starting the immediate process of disassembly from the extraction SIM-This is a must, as trying to remove the lid with the card installed can damage the contacts or the tray itself. After that, carefully inspect the perimeter of the device for hidden screws under stickers or rubber plugs.
The next step is heating. You can evenly warm the perimeter of the back cover with a hair dryer for 2-3 minutes. The temperature should not be extreme, 80-90 degrees Celsius is enough. You can check the readiness by gently touching the surface: it should be hot, but not melting finger.
Using a suction cup, create a small gap between the body and the frame. Insert a plastic mediator into this gap and, as you make sliding movements, gradually cut the adhesive layer around the perimeter. Don't try to push the lid sharply - the glass or plastic can crack with stress.
- 🔥 Warm up the perimeter of the body during 2-3 minute
- 🕳️ Make a small gap with a suction cup
- 🔪 Carefully run the mediator throughout the circuit
- 🔌 Turn off the plume (fingerprint scanner) if it is available
When you remove the lid, the first thing you do is turn off the battery, find the battery connector on the motherboard, and gently disconnect it with a plastic blade, and only after the board is de-energized can you unscrew the screws that lock the protective screens and other components.
☑️ Safe dismantling
Replacement of the display and removal of the front panel
If you want to replace a broken display, it's complicated by the need to work with the front. Most modern Redmis have a bezel-like screen, and you also need to heat it off, but on the front side, which requires the utmost care to avoid damaging the matrix even more.
There is a method of splitting glass and frames with a thin string or blade, but it requires a high level of skill, it is easier and safer to replace the display unit assembled with a frame, and to do this, you need to transfer all the internal components (motherboard, batteries, speakers) from the old frame to the new one.
When you're working with a display, look at the plumes. They're very thin and they break easily when you're not handling them properly. The display and touchscreen connectors can be combined or separated, and it's important not to confuse them when you build them. Before you plug in a new module, make sure the contacts on the board are clean.
The process of transferring components requires consistency. First unscrew all the screws holding the board. Then unplug all the plumes: the main, side button, antenna cables. Carefully remove the board, trying not to catch the camera or other protruding elements.
⚠️ Warning: When removing the display from the frame, be careful with the backlight plume. its damage will cause the phone to work, but the screen will remain black, although the image on it will be (you can check with a flashlight).
Working with internal components and plumes
The interior of Xiaomi’s smartphone is densely packed (tightly packed).The motherboard is often covered with a metal screen that can be soldered or screwed, and it is not recommended to remove this screen unnecessarily, as it can damage the small elements on the board.
The camera modules require special attention. The main and front cameras are attached in special seats and can be additionally fixed with glue or screws. When removing the camera, hold it by the metal body, avoiding touching the lens with your fingers to avoid leaving fat marks.
Antenna cables (usually black or white) are connected to the motherboard through special latch connectors, which are removed by a slight movement of tweezers upwards. When assembled back, it is important to press until a characteristic click, otherwise the phone may not catch the network or Wi-Fi well.
| Component | Type of attachment | Risks of withdrawal | Tool. |
|---|---|---|---|
| Back cover. | Clay/Scotch | Cracks, chips. | Fen, mediator |
| Battery | Adhesive tape | Puncture, fire. | Plastic card |
| Display. | Perimeter glue | The plume rupture | Fryer, sucker. |
| Maternity fee | Screws + plumes | Connector breakdown | Screwdriver PH00 |
Speakers and vibrators in Redmi are often modular. They can be glued to the body or simply inserted into the slots. When removing the speaker, be careful with the membrane - any damage will lead to wheezing or complete loss of sound.
What do I do if the screw is ripped off?
Assembly of the device and verification of functionality
The assembly is done in reverse order, but with the addition of new adhesive materials. Old glue or tape will not provide sealing and dust protection. Use special adhesive frames (B-7000 or ready-made adhesive tapes) that can be purchased in parts stores.
Before you final screw swirl and seal the body, do a primary check. Connect the battery, turn on the phone, and check the touchscreen, speakers, microphone, cameras, and proximity sensors. Make sure the phone sees. SIM-map.
If everything works correctly, degrease the edges of the body with alcohol or an alcohol wipe for better adhesion of the glue. Apply a new glue uniformly or glue a new frame, tightly press the parts and lock the device with rubber bands for 15-20 minutes before the initial grip.
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Use rubber harnesses or stationery gums to fix the case during drying of the glue, which will ensure uniform fit and prevent the appearance of cracks.
Don't put the case on right away. Let the glue be fully polymerized within a few hours (better left overnight) Early loading on the seams can cause the case to break apart again or moisture to enter the crevices.
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Quality assembly depends not only on the correctness of the connection of the plumes, but also on the restoration of the tightness of the body with new adhesive materials.
Frequent errors and troubleshooting
One of the most common mistakes is ignoring battery shutdowns. Even short-term closure of contacts with a battery connected can burn the power controller or backlight circuit. Always work with a powered device that is powered down.
Another mistake is to use excessive force, and if you don't remove the part, you forget to unscrew the screw or you don't get the glue, and the use of force causes plastic latches to break down, which you can't repair without replacing the body.
Also, users often forget about calibrating the sensors after changing the display. The screen may work, but the proximity sensor will turn off the screen during a conversation or, conversely, do not turn it off. To solve this problem, Xiaomi phones have an engineering menu.
To log in to the engineering menu and check the sensors, use a special code. Dial on your phone: ##6484##. This will open the CIT (Customer Interactive Testing) menu, where you can test all the components and calibrate them if necessary.
Code for entering the engineering menu of Xiaomi:
##6484##⚠️ Warning: If the phone doesn't turn on after assembly, don't try to charge it right away. Check the battery plume and main plume of the display.