Disassembling Xiaomi Redmi Notes is a process that requires not only accuracy, but also an understanding of the internal architecture of the device. Modern gadgets are designed to pack components as tightly as possible, making dismantling difficult for beginners. However, with the right tools and knowing the sequence of actions, you can successfully replace broken glass, a failed battery or a charging plume.
It is important to note that opening the case automatically voids the official manufacturer's warranty. If your device is still in warranty service, it is better to contact an authorized service center. In other cases, when the phone is no longer warranty repairable or you want to save on the services of masters, self-disassembly becomes a completely justified solution.
The workspace must be well lit and the surface clean and free of foreign objects. Small screws and parts are easily lost, so it is recommended to use a magnetic mat or containers to sort the fastener by dismantling stages, which will avoid situations where there are unnecessary parts or screws in the case.
Tools and workplace preparation required
The quality of the repairs depends on the toolkit used. Redmi Note models (regardless of the specific modification, whether it is 9, 10 or 11 series) require a specialized set. Using inappropriate items such as kitchen knives or needles can damage the internal plumes or battery failure.
The base kit should include a suction cup to remove the back cover, a set of cross-bit screwdrivers (usually PH00 or PH000), plastic shoulder blades (mediators) and tweezers. It is also highly recommended to have a thermophen or heating pad on hand to soften the glue holding the back panel.
Safety is important, and lithium-ion batteries require caution: damage to the battery shell can lead to fire, so having a fire extinguisher or sand tank near the workplace is a good precaution, although these are rare when handled carefully.
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Use a magnetic mat or spread out a piece of paper that can be schematically laid out in order to extract the screws, saving hours of time when you build them.
Design features and dismantling of the back cover
The Redmi Note line of smartphones in recent generations has moved to glass or plastic back panels that are mounted around the perimeter on a double-sided tape. Unlike older models with removable covers, preheating is required. Without thermal exposure, the glue remains solid, and trying to tear the lid by force will lead to its destruction or damage to the frame.
The heating process must be controlled. 80-90 The best way to soften the adhesive layer is to keep the thermophen at a distance. 3-5 cm from the surface, constantly moving it around the perimeter of the device during the 2-3 Overheating can damage you. OLED-display or internal components, so it is important not to exceed the temperature.
⚠️ Warning: Never heat the area where the battery is located unless there is a glue connection in the area. Local overheating of the battery can cause the electrolyte to blister or ignite.
Once warmed up, a suction cup comes in, attaching it to the bottom of the back cover (usually where there is no camera module), creates a slight tension, the resulting gap is carefully inserted into a plastic blade, the movements should be sliding along the plane of the smartphone, not perpendicular, so as not to damage the plumes coming from the buttons or fingerprint scanner.
Special attention should be paid to the camera module. In some Xiaomi models, the lens can be glued to the back cover; a sharp panel compartment can tear the camera from the socket or damage its plume; check for glue around the lenses before the final lid is removed.
What to do if the cover is broken when removed?
Removal of the protective plate and disconnection of plumes
When you successfully remove the back cover, you will see an interior space that is covered by a protective plate (or multiple plates), which protects the main components from mechanical stress and shields electromagnetic radiation, usually with many small screws of different sizes.
It is critical to remember the location of each screw. Redmi smartphones today use different lengths of screws for different nodes. Installing a long screw into a hole designed for a short one can cause a motherboard to break through or damage the battery, which will disable the device without the possibility of recovery.
☑️ Dismantling of the protective plate
The next step is to turn off the plumes, and the first thing you do is to turn off the battery, and that will turn off the battery, and it will eliminate the risk of short circuits when you're working with other components, and the battery connector is usually located in the bottom or middle of the board and is snapped with a plastic lock.
To turn off the plumes of the display, cameras and other modules, plastic blades or nails are used. Metal tools are prohibited here, because they can easily damage the contacts or the connector on the board.
| Component | Type of connection | Features of disconnection | Risks. |
|---|---|---|---|
| Battery | Clamp connector | Strictly down below. | Short circuit. |
| Display. | Wide plume | Very fragile, requires delicacy. | Breaking the tracks |
| Main camera. | Small connector | Often has a fixing frame | Lens damage. |
| Charging plume | Combined | Can go through the body. | The gust of the plume |
Replacement of battery and batteries
One of the most common reasons for the Xiaomi Redmi Note to disassemble is to replace the worn-out battery. Over time, the battery capacity drops, the phone begins to quickly discharge or turn off in the cold. In most models, the battery is glued to the body or frame on a powerful double-sided tape.
Metal objects that can pierce the shell cannot be used to extract the battery. The best method is to use a special hood with suction cups or gently slap the plastic card/scapula after preheating. Some craftsmen use floss (such as dental floss) to conduct it under the battery to cut the adhesive layer.
⚠️ Attention: If the battery is swelling, it requires the utmost care to remove it. Pressure on the swelling battery can lead to ignition. In such cases, it is recommended to first carefully remove the adhesive layer, and then remove the element, minimizing deformation.
When installing a new battery, it is important to use new adhesives or special adhesive strips, which often come with the original batteries. Fixing the battery in the case prevents it from moving when it falls and ensures normal heat sink. Lack of glue can cause the battery plume to detach from the connector.
After installing a new battery, take your time to assemble the phone right away, and it is recommended that you do the first charge cycle with the device turned off to calibrate the power controller, which will help the system correctly display the percentage of charge in the future.
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Correct fixation of the new battery with glue is the key to the long service of the device and protection from mechanical damage during falls.
Dismantling and Replacement of Display
Replacing the screen with the Redmi Note is one of the most difficult operations. In modern models, the display is often glued to the frame of the case, and in some cases (especially in the case of the Redmi Note). AMOLED-In the case of the new version, it can be integrated into a single module, making it easier to replace but increasing the cost of the spare part.
If you change only a glass or a matrix without a frame, the process takes much longer and requires skills with a separator and adhesive B-7000 or analogues. If you have a module assembled with a frame, the task is to move the internal components (boards, cameras, speakers) from the old frame to the new one.
When re-painting components on a new frame, you need to carefully clean all surfaces of old glue. The residue of the glue can create irregularities that will cause the new screen to fit poorly, which will lead to stains ("lens") on the display or break it when compressed.
The display plume is the most vulnerable element. When it is connected, it is important to make sure that it is inserted to the end and fixed by the pressing plate. Not deep enough immersion of the connector will lead to the absence of an image or the appearance of artifacts (white screen, stripes).
Work with the camera module and additional plumes
The camera modules in Xiaomi smartphones are secure enough, but their optical elements are extremely sensitive to dust and fat pollution. When disassembling, try not to touch the lenses with your fingers. If dust hits the lens, it can be carefully removed with a pear for cleaning the optics, but not with a fabric that can leave a pile.
Often, when replacing a screen or battery, you need to turn off the bottom board plume (where the charging connector is located), this plume can pass through special channels in the case. When extracting it, it is important not to engage it with the sharp edges of the metal frames, since it is almost impossible to restore the broken tracks of the plume.
Why is the fingerprint scanner not working after assembly?
And you also need to look at the speaker mesh and the microphone, which can get clogged with glue or lose their properties when they're disassembled frequently, and it's inexpensive to replace these small elements, but it improves the quality of sound and voice communication.
Device assembly and initial start
The assembly is done in reverse order, but with increased attention to detail. First, all the internal components are installed, the plumes are connected (except the battery), and only at the last moment the battery is connected. After connecting the battery, check if the screen responds to pressing before twisting the screws.
When you twist your screws, don't put too much effort. The smooth moment of the tightening indicates that the screw is in place. If the screw is tight, you may be trying to twist it into the wrong hole or at an angle, which can break the thread in the plastic seats.
The back cover is glued to a new double-sided tape. Before gluing, degrease the frame and the lid with an alcohol napkin. Plug the tape around the perimeter, remove the protective film and press the lid tightly. For better fixation, you can put the phone under the press (for example, under a stack of books) for 1-2 hours.
⚠️ Warning: Do not turn on the phone immediately after assembly if you have used liquid glue (B-7000) for a display or a cover. Let the glue dry at least 30-60 minutes, otherwise the adhesive pairs may settle on the cameras or display, creating a fog.
Once the glue is fully assembled and dryed, you can start the first run, and if the phone is on, the sound is running, the sensor is running, the cameras and charging are running, the repair is a success, otherwise you'll have to take the device apart again and look for the cause, checking all the connectors.