Modern smartphones line Xiaomi Redmi are famous for their availability and reliability, but even the strongest device is not immune from mechanical damage or failure of internal components. Disassembly Xiaomi Redmi may be required to replace a broken display, install a new battery or clean up dust caught in the speaker. Self-intervention saves a significant amount of money on the services of the service center, but requires extreme accuracy and understanding of the device gadget.
In this article, we will take a closer look at the process of dismantling the cases of various models, from budget versions with a plastic back cover to more complex structures with glass panels. The internal layout of Xiaomi smartphones has changed in recent years, as manufacturers increasingly use adhesive compounds to fix elements, which complicates the opening process. It is important to prepare the workplace in advance and take your time, since rush is the main enemy when working with miniature electronics.
Tools and workplace preparation required
Before disassembling, you need to organize a lighted workspace and prepare a specialized tool. Common household tools such as kitchen knives or sewing needles are best avoided, as they can easily damage plumes or scratch the case. Professional craftsmen use precision screwdriver sets and plastic blades that do not conduct electricity.
For a successful and safe disassembly, you will need:
- 🛠️ Precision screwdriver kit (cross-hatch) PH00, PH000 Torx T5).
- 🧰 Plastic mediators (scapula) for snapping latches.
- 🌡️ A dryer or heat pad to heat the glue (temperature about 80-90°C).
- 🧲 Magnetic mat or organizer for screws.
- 💳 Plastic card or thin knife for putting the cover.
Pay special attention to the lack of moisture on the table and hands. Static electricity can disable the chips, so before you start work, it is advisable to touch a grounded metal object. If you have an antistatic bracelet, be sure to use it.
⚠️ Warning: Never start disassembling if the battery is more than charged 25-30%. Damage to a discharged battery is less dangerous than a breakdown of a fully charged battery that can ignite when punctured.
Specifics of disassembling models with a plastic back cover
Many low-end Redmi models, such as the older-generation Note series or the Redmi A line, feature polycarbonate housings, which typically start with the removal of the back cover, which is often held on plastic latches around the perimeter. Unlike glass counterparts, plastic is more flexible and forgives small mistakes when wearing.
The process of dismantling is as follows: first you need to remove the tray. SIM-And then, using a thin plastic card or a mediator, you need to walk gently around the perimeter of the device, snapping the locks. Don't try to open the lid from one angle, it will lead to cracks in the plastic.
Once the lid is removed, access to the main modular unit is opened, and here, a sharp jig of the lid can break this thin conductor, which requires complex soldering or replacement of the plume.
Hidden screws under stickers
Dismantling smartphones with glass back panel
Flagship and mid-budget models like the Redmi Note Pro or the K series often feature glass panels glued around the perimeter with a special sealant. Xiaomi's disassembly with a glass lid requires preheating. Without this step, the glass is highly likely to crack when you try to open.
Use a hair dryer or special heating pad, evenly warming the edges of the device during the 2-3 The temperature should not exceed 90-100°C so as not to damage OLED-And then you put a thin suction cup in the bottom of the phone, and then you pull it up a little bit, and you create a gap, and you put a plastic spatula in.
Move the shoulder blade along the perimeter, cutting the adhesive layer. In some models, the adhesive may not be applied around the perimeter, but only in certain areas, but most often it is a solid frame. Be careful in the corners where the antenna plumes pass, they are very easy to cut with a sharp edge of glass or tool.
- 🔥 Warm up the device evenly, without holding the hair dryer at one point longer than 10 seconds.
- 🔪 Use special knives for opening (opening picks) with a thin profile.
- 🧼 Prepare a new glue in advance. B-7000 or T-7000 reverse-assembly.
Disconnecting the battery and removing protective screens
Once the back panel is successfully removed, your first action should be to turn off the battery. Even if the device is turned off, the circuit is put on the circuit board, and accidental circuit of the connector can cause the power controller to short-circuit and fail. Find the battery connector, which is usually located in the bottom or middle of the motherboard.
Use a plastic blade or nail to gently press the connector upwards. Don't use metal tools in this area! Next, remove the metal protective plate that covers the main plumes of the display and camera, and it is attached with several screws that may differ in length.
It's important to remember the location of each screw. Today's Xiaomi smartphones use different thread lengths for different nodes. If you screw a long screw into a short hole, you can punch through the motherboard, causing permanent damage to the tracks.
☑️ Procedure for disconnection
⚠️ Warning: If the battery connector is not easily pressed, do not use force. Check if there is a metal bracket or glue point on top that needs to be carefully removed.
Replacement of the display and work with plumes
The most common reason for disassembly is to replace a broken display. In Xiaomi Redmi smartphones, the screens can be modular (with a frame) or glued (glass and matrix only). To replace the modular screen, you just need to unscrew the screws around the perimeter of the frame (if any) and turn off the plumes.
The display and touchscreen plumes are very sensitive to the clutters. When you remove them from the connector, you must act strictly perpendicular to the circuit board. If the plume is glued to the frame, it must be carefully heated and unstuck using blunt-ended tweezers.
When installing a new module, make sure that the contacts are free of dust and pile. Even a microscopic motif can lead to stripes on the screen or the touch layer malfunctioning. Before final assembly, it is advisable to conduct testing by simply plugging the plumes and turning on the phone.
| Component | Type of attachment | Risk of damage | Tool. |
|---|---|---|---|
| Back cover. | Glue/Lacks | Glass cracks | Fryer, sucker. |
| Battery | Glue stripe | Flames. | Plastic card |
| Maternity fee | Screws/Steams | Breaking the tracks | Tweezers, screwdriver. |
| Display module | Glue/Frame | Breaking the matrix | Scapula, alcohol |
Removal of the battery: nuances and dangers
Most Redmi models have a battery glued to a body or frame with double-sided tape. Over time, the glue dries up and the battery sits tight, or, conversely, swells up and presses on the screen. You can't use metal objects to extract, because the puncture of the lithium polymer cell causes an instant chemical reaction, releasing heat and smoke.
The best way to remove the battery is to use special hoods with suction cups or gently poke it with a plastic card, pre-dripping a little alcohol or isopropyl solvent under the edge of the battery. The liquid will dissolve the glue, and the battery will more easily leave its bed.
The old battery should be disposed of correctly. You can't throw it in the trash can. If you plan to store the old battery, tape the contacts with tape to prevent accidental circuits.
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Use high-concentration isopropyl alcohol (IPA) to dissolve the glue. It evaporates quickly and leaves no conductive traces, unlike water or acetone.
Assembly of the device and verification of functionality
The assembly is done in reverse order, but requires even more care. Before you twist the screws and glue the lid, you need to check the operation of all systems. Connect the battery, press the power button and make sure that the phone responds.
Check the touchscreen by moving the icon all over the screen, turn on the camera, check the speakers and microphone, make sure the vibrator is working and the proximity sensor is not closed by a plume, and only after successful testing can you start the final fixation.
When you install the back cover, apply a new layer of glue (B-7000 or analog) with a thin strip around the perimeter. Remove the excess glue immediately before it freezes. Press the cover with rubber harnesses or a load for 15-20 minutes to polymerize the composition.
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You can't build quality without removing old glue and dust, and you can clean all the surfaces thoroughly before you apply a new adhesive, otherwise the lid will backfire.