Modern Xiaomi and Redmi smartphones often have glass or plastic back covers that are glued around the perimeter of the case. The need to remove this panel may occur when replacing the battery, repairing the charging plume or restoring broken glass. Self-disassembly requires care, as inept actions can damage the internal components or the body itself.
The dismantling process varies depending on the model of the device and the material of the rear panel. While older models could have removable covers, modern flagships and budgeters require the use of a special tool and heat heating. Patience and caution are the main allies of the master in this process, avoiding costly errors in opening the sealed case.
Before you start to physically affect the body, you need to prepare the workplace and make sure that you have all the necessary tools. Unprepared dismantling often ends in cracks in the glass or damage to the plumes, so it is important to learn the theoretical part and safety. Next we will look at a detailed algorithm of actions that will help you successfully perform the procedure.
Tools and workplace preparation
You can't do a good job without specialized equipment that minimizes the risk of damage. You'll need a hair dryer (construction or household with high temperature), a thin metal scalpel, a set of plastic mediators (scapula), a suction cup and tweezers. Using sharp metal objects without edge protection can leave deep scratches on the smartphone frame.
- 🔥 Hair dryer or thermoplatform for softening glue.
- 🛠️ A set of thin plastic blades and mediators.
- 🧲 Suction cup for careful pulling of glass.
- 🧴 Liquid for glue removal (isopropyl alcohol or special means).
- 📏 Tweezers with dielectric tips.
The work surface should be clean, flat and well-lit. It is recommended to use an antistatic mat to prevent damage to electronics by a static charge. All tools should lie within reach so as not to be distracted during critical stages of operation.
⚠️ Warning: Never use knives or blades without protective tape on your shoe, as slipping the tool can cause serious injuries to your fingers or a puncture of the battery.
Pay special attention to the state of the battery before work. If the battery is swelling, you can not heat the device, this can provoke a fire. In such cases, special care is required when removing the lid, often without prior strong heating.
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Use 99% isopropyl alcohol to dissolve the glue – it evaporates quickly and does not conduct electricity, unlike water or other solvents.
Features of the design of Xiaomi and Redmi
Xiaomi engineers use different methods to mount the rear panel depending on the price segment of the device. Budget models often have plastic covers that are held on latches and less aggressive glue. The flagship Mi and Xiaomi Number Series are equipped with glass panels glued around the perimeter with a powerful adhesive.
It's important to understand that underneath the back cover is immediately a battery pack that occupies most of the space. The plumes that connect the main board to the daughter (where the charging connector is located) often pass under the battery or through special channels. A sloppy autopsy can cause these delicate components to break.
Some models, especially those that are protected or IP68-marked, may have additional screws under stubs or hidden under the logo. Before heating, carefully inspect the perimeter of the device for visible fasteners. The absence of screws does not mean that there are no hidden mounts.
| Series of devices | Cover material | Type of attachment | Difficulty autopsy |
|---|---|---|---|
| Redmi Note (budget) | Plastic. | Latches + glue | Low. |
| Xiaomi Mi (flagship) | Glass. | Strong perimeter glue | Tall. |
| POCO (medium segment) | Plastic/Glass | Combined | Medium |
| Xiaomi MIX | Ceramics | Very strong glue. | Extremely extreme. |
The ceramic back panels found in some premium models require a special approach: they are more fragile when impacting on fracture, but stronger than glass when scratched. The ceramics take longer to heat, because it conducts heat less to the adhesive layer.
The procedure for heating and softening glue
Heating is a critical step in the success of the whole operation, and the goal is to heat the adhesive layer to a temperature. 80-90 degrees Celsius without damaging OLED-The screen or the battery itself. Excessive heating can cause the battery to bloat or detach the display.
Turn on the dryer and direct the hot air flow to the back, moving the device in a circle. Do not hold the hair dryer still at one point for more than 2-3 seconds to avoid local overheating. The optimal distance from the nozzle of the hair dryer to the body is 3-5 centimeters.
- 🕒 Heat the device during the 3-5 minutely.
- 🌡️ Control the temperature with your hand – the body should become hot but tolerant to touch.
- 🔄 Periodically check the softness of the glue, trying to slightly pull the edge with a suction cup.
If you have a thermoplatform, it makes it much easier: Put your smartphone down on a platinum screen heated to 80 degrees and leave it for 5-7 minutes.
⚠️ Warning: If you smell smoke or smoke during heating, stop the procedure immediately.This may indicate the beginning of thermal destruction of battery components.
After heating, immediately start opening the lid, as the glue quickly cools and hardens again. If the process is delayed, the heating procedure must be repeated. Do not try to remove the lid "cold" - this is guaranteed to lead to its destruction.
What to do if the glue does not soften?
Technology of opening the body without damage
After sufficient warming, attach the suction cup to the bottom or top of the back cover, closer to the edge. Pull the suction cup up slightly, creating tension, and insert a thin metal scalpel or mediator into the resulting microscopic gap.
Move the tool along the perimeter of the body, making cutting movements parallel to the plane of the smartphone. Your task is to cut the adhesive layer, not to pull the lid up. Stripping creates a pressure point that can break glass or plastic.
Walk the tool around the perimeter several times. If you feel resistance, don't use force, you'd better add a little more heat. Pay special attention to the corners of the device, because it often accumulates the most glue.
☑️ Safe autopsy
When the lid is completely separated around the perimeter, don't rush it off. Inside, you might have a fingerprint scanner plume or a flash LED glued to the inside of the glass.
Disabling plumes and extracting components
The first thing you do after you remove the lid is to turn the device off, find the battery connector on the motherboard and gently unplug it with a plastic blade, which will prevent short circuits when working with other components.
Then you have to turn off all the plumes that go to the back, which can be the main camera plume (if it's mounted on the lid), the fingerprint scanner, or the antenna contacts, and use tweezers to grab small connectors, but be very careful.
- 🔌 Turn off the battery connector first.
- 📸 Check for camera plumes and sensors on the cover.
- 📡 Release the antenna spring contacts (pogo pins).
If the plumes are glued to the body, they need to be carefully unstuck, heated with a hairdryer to connect, sharp detachment can damage the thin conductors inside the plume, after disconnecting all communications, you can completely remove the back panel.
Replacing the battery may require removing the metal shield covering the motherboard, which is attached to many small screws of different sizes, and it is recommended to place the screws in the order of their removal, so as not to confuse the length during assembly.
⚠️ Warning: When you turn off the plumes, never pull the wires themselves, this will cause them to break inside the insulation.
Assembly and sealing of the device
Before installing a new back panel or returning an old one, you need to completely clean the frame of the case of the residue of old glue. Use a plastic card or a scalpel, and a napkin moistened with alcohol. The surface should be perfectly smooth and fat-free.
Apply a new layer of glue (B-7000 or special double-sided tape) around the perimeter of the frame. Do not apply the glue too close to the internal components so that it does not squeeze inside when pressed. Let the glue dry a little (2-3 minutes) to a state of stickiness.
Connect all the plumes in reverse order, making sure the characteristic lock click. Set the battery (if it was removed) and check the device's performance before final gluing. Turn on the phone, check the sensor, cameras and charging.
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Quality cleaning of the frame from old glue is a guarantee that the new panel will lie flat and without gaps, retaining moisture protection (if it is claimed).
Carefully apply the back cover, combining all the holes and edges. Press the device tightly around the perimeter and fix it with stationery gums or a special press for 1-2 hours until the glue is completely dry. Do not turn the device on the network while the glue is drying.