Modern Xiaomi smartphones are often perceived by users as monolithic devices, but the need for access to internal components arises regularly. Most often owners are interested in how to remove the lid to replace broken glass, clean the speaker from dust or, in rare cases, access the battery.
In this article, we will take a look at the algorithms for different series of devices, from the budget Redmi to the flagship Mi and Black Shark. You will learn what tools will be required to safely open the case, how to avoid damage to the plumes and what to do if the lid is glued too tight.
Before you start disassembling, it is important to determine the type of design of your device. Mistakes when trying to remove a non-removable panel can lead to permanent damage to the case and loss of warranty. We will consider all the nuances to minimize risks and perform the job professionally.
Determination of shell design type
The first step is to figure out exactly the architecture of your device. Older models and some budget options still have removable battery compartments, while modern flagships and most mid-budget smartphones have a sealed body. Trying to tamper with a monolithic back with nails or a knife without first heating the glue is guaranteed to cause cracks.
To understand what you're dealing with, look carefully at the ends of the device. If you see a thin joint around the perimeter and there's a barely noticeable groove or notch on the side, it's probably a removable panel. In non-removable battery models, the joint is often framed or taped, and access to the device is often limited. SIM-The card is carried out through the tray, not under the battery.
Also worth paying attention to materials: plastic back panels are more likely to be removable, while glass and ceramics are almost always fixed to glue. Metal housings (antennae inserts) also usually require careful peeling off. Identification of the type of cover is the foundation of successful repairs.
- 🔍 Inspect the perimeter of the device for visible gaps or special notches for opening.
- 📱 Check the model online: the presence of the phrase “Unibody” indicates a non-removable design.
- 🔋 Try to move the panel gently with your finger (without effort): if it does not move, do not use force.
⚠️ Warning: If you feel resistance to trying to move the lid with your fingers, stop immediately. It's probably a monoblock, and it'll require heating and special suction cups to open it.
Don't rely on visual inspection if you're not sure about yourself. It's better to spend time looking for the exact model in the spec than buying a new back panel instead of a broken one. In today's world, even budget Redmis often lack removable caps for the sake of a denser internals layout.
Necessary tools for safe disassembly
Good workplace training and the right tools are key to success. Xiaomi smartphones are not suitable for ordinary kitchen knives or stationery blades, as they can damage internal plumes or scratch the frame. Professionals use specialized kits that minimize the risk of damage.
The main tool will be a thin metal or plastic blade. Metal is more efficient at joining, but plastic is safer for fragile screens and glasses. You also need a heat source: an industrial dryer is preferable, but the usual household model will also work, although you will need to warm longer.
Don't forget the lighting. The internal components of a smartphone are very small, and poor light can cause a mistake when the plumes are disconnected. Macro mode on another phone or a backlit magnifier will be great helpers in this process. The accuracy of movements depends on the quality of visual control.
☑️ Tools for opening the shell
Special attention should be paid to chemistry. Regular PVA or superglue is not suitable for fixing the lid back. You will need a special adhesive (B-7000, T-7000 or analogues) that remains elastic after drying and allows you to reopen the device if necessary. Using inappropriate substances can lead to overheating or destruction of the plastic.
Algorithm for removing the removable back cover
If your smartphone is a removable battery model (such as some versions of the Redmi 9A, Redmi 8A or older series), the process is as simple as possible. However, even here there are nuances that can lead to failure of latches.
Find a special notch to open, which is usually located on one of the lower corners of the device or on the side, next to the manufacturer's logo, insert the thumbnail or the thin edge of the plastic card into this groove, and the movement should not be directed upwards, but along the plane of the lid, as if you move it to the side.
Once one corner is snapped, swipe your finger or map along the perimeter, sequentially releasing the latches. A characteristic click will tell you that the lock is unlocked. Don't try to bend the lid sharply, as Xiaomi's plastic latches can be quite brittle after prolonged use.
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Before removing the lid, be sure to turn off the smartphone, which will prevent accidental short circuit if the battery contacts or plumes are affected when removing.
After removing the panel you will see the battery, slots for SIM-The card and microSD, and the main camera, if you're looking to replace it. SIM-To access the insides, you will need to unscrew the screws hidden under the decorative bar or directly on visible structural elements.
Disassembly of monoblock models with glue fixation
Most modern Xiaomi, Poco and Redmi Note smartphones have a perimeter-stick back panel. It requires preheating to remove it. Turn on the hair dryer and warm up the edges of the device evenly for 2-3 minutes. The temperature should not exceed 80-90 degrees so as not to damage the screen matrix or internals.
Check the heating with your finger: the glass should be hot, but not burning. After heating, glue the suction cup to the bottom of the back cover (where there is no camera) and slightly pull up, creating tension. In the resulting gap, carefully insert a thin metal blade or blade.
Move the blade along the perimeter, cutting the adhesive layer. It is important not to dive deeper than 2-3 mm, so as not to damage the plumes coming from the buttons or fingerprint scanner. Move slowly, periodically warming the cooling areas with a hairdryer. uniform heating is critical to maintaining the integrity of the glass.
What to do if the cover is broken when removed?
Be especially careful in the top of the smartphone, where the main camera and plumes are located. Here the adhesive layer may be thicker, but the risk of damage to sensitive components is higher.
Specifics of working with glass and ceramic panels
The Mi and Mix series’ flagship models often feature hardened glass or ceramic back panels, which are highly compressive but highly vulnerable to impact and point pressure, and take longer to heat ceramics because they conduct heat worse than glass or metal.
When working with glass, it is important to avoid sudden temperature changes.Do not pour cold water on a heated device and do not use open flames. Xiaomi ceramic covers are known for their strength, but if opened improperly they can split radially, making further repairs meaningless.
Use the thinnest blades (like a stationery knife) to enter the glass first. Metal mediators here may be too thick. Movements should be sawing, but without much pressure. If you hear the crunch of glue, it's okay, if the glass crunches, stop immediately.
| Cover material | Heat time | Risk of damage | Recommended instrument |
|---|---|---|---|
| Plastic. | 1-2 minutes | Low. | Plastic card, mediator |
| Tempered glass | 3-4 minutes | Tall (cracks) | Thin blade, sucker. |
| Ceramics | 4-5 minutes | Medium (splinters) | Metal spatula |
| Metal | 2-3 minutes | Medium (deformation) | Plastic mediator |
After removing the glass or ceramic panel, be sure to clean the frame of the residue of old glue. Use isopropyl alcohol and a soft wipe. The surface should be perfectly smooth and fat-free before applying a new adhesive.
Working with internal components and plumes
When you successfully remove the lid, you can access the insides of your smartphone, where you have a high density layout, the battery can take up most of the space, blocking access to other nodes, and in some Xiaomi models, you need to first remove the battery to access the board.
All connections in modern smartphones are connectors, not soldering. The plumes of the display, cameras, buttons and charging port are fixed with plastic plugs or press-down slats. Before disconnecting any plume, be sure to turn off the battery! That is the first and most important rule.
To turn off the battery, find the connector on the board and gently tuck it in with a plastic blade. Don't pull the wires. Once powered down, you can safely disconnect the other components. Use tweezers to work with small screws and parts so you don't lose them inside the case.
⚠️ Warning: Never use metal tools to tweak plumes directly on the board. This can short-circuit the tracks and cause the motherboard to fail.
If you're planning a battery replacement, make sure the new cell has the same dimensions and connector as the original. Installing the battery in the wrong size can cause the display to swell and damage from the inside. Component compatibility is a key factor in stable operation.
Assembly and sealing of the device
Reverse assembly requires even more precision than disassembly. Apply a new layer of glue around the perimeter of the frame before placing the lid. Use a tube with a thin nose for even distribution. The layer should not be too thick, otherwise the lid will not stand tight, or too thin, then the leakage will be broken.
Once you apply the glue, gently align the lid with the frame, starting at the top (where the camera is). Press the perimeter tightly. For better fixation, you can use stationery gums, wrapping them around the smartphone for 15-20 minutes until the glue catches. Don't turn the device on immediately, let the chemistry polymerize.
Check all the functions: buttons, vibrations, cameras and sensors. If your fingerprint or proximity sensor stops working after you build it, you may have forgotten to plug in some plume or damaged it when you build it, and you'll have to repeat the procedure.
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Well, sealing is not just aesthetics, it's also protecting your guts from moisture and dust. Don't skimp on glue and drying time.
In conclusion, it is worth noting that regular cleaning of speakers and connectors through the removed cover (if the design allows) prolongs the life of the device. However, frequent disassembly wears out the fasteners, so only conduct it when necessary.