Smartphones of the line Redmi from Xiaomi have long proven themselves as reliable devices with an excellent price-performance ratio. the Redmi 5A model has become a real hit of the budget segment, but over time, even the most reliable gadget requires intervention. Most users are faced with the need to replace the battery, a broken screen or clean the speaker from dust, which is impossible without access to internal components.
The process of disassembling this device has its own characteristics, which distinguish it from modern monoblocks. The back cover here is not just a decorative element, but a structural part that requires careful handling. Incorrect actions can damage the plumes or break plastic latches, so it is important to clearly understand the sequence of actions and use the appropriate tool.
In this article, we will detail how to safely remove the back panel so as not to damage fragile body parts.You will learn about the necessary tools, the intricacies of working with the adhesive base and precautions that will help keep your smartphone working. The glue under the Redmi 5A lid becomes very fluid when heated, so it is important not to overdo it with the temperature of the hair dryer.
Tools and workplace preparation required
Before you start physically affecting the body of your smartphone, you need to prepare your workplace. The ideal option is a clean, well-lit table with a matte surface on which small details will not slide. The light should fall evenly so that you can see small screws and connectors without straining your eyes.
For high-quality disassembly Xiaomi Redmi 5A you need a minimum, but specific set of tools. the use of improvised tools, such as scissors or kitchen knives, is strongly discouraged, as there is a high risk of damage to internal components or injury.
- 🛠️ Heating tool: building hair dryer, thermophen or, in extreme cases, a household heating pad for heating glue.
- 🎴 Plastic blade or mediator for snapping the body without scratches.
- 🔧 Phillips (cross) size screwdriver PH000 or PH00 screw-twisting.
- 🧲 Magnetic mat or container for sorting screws so as not to lose them.
Plastic tools are a special consideration. Metal objects can short contacts on the board or damage the battery when you move carelessly. If you don't have a professional shoulder blade, you can use an old plastic card that has been cropped to the desired shape, but you'd better buy a special smartphone repair kit.
☑️ Checking disassembly readiness
Precautions and battery safety
Any disassembly of an electronic device carries risks, and the Redmi 5A is no exception. The main source of danger inside a smartphone is a lithium-ion battery. Damage to its shell can lead to ignition or chemical burns, so you need to act extremely carefully.
⚠️ Warning: Never try to unplug the lid unless the smartphone is turned off.Accidental closure of the contacts of the battery connector can disable the power controller or motherboard.
Before starting the work, be sure to remove the tray. SIM-This will not only de-energize some circuits, but will also allow access to one of the hidden screws, if it is provided by the design (although in the case of a new one). 5A screws are mainly under the sticker.It is also worth removing the protective glass or case so that they do not interfere with access to the faces of the device.
If you plan to work with glue, make sure that the room is well ventilated, the heated glue can emit a specific smell that is not useful for inhalation, and also keep your eyes away from possible small fragments of glass or plastic that fly away.
The process of heating the glue base
The back cover of the Xiaomi Redmi 5A is mounted on double-sided tape and glue around the perimeter of the case. At room temperature, this composition is very strong, and trying to remove the panel "cold" is guaranteed to lead to cracks on the plastic or fiberglass of the cover.
Turn on the hair dryer and set the temperature to about 80-100 degrees Celsius. Don't direct the hot jet of air to one point for too long, especially in the area of the camera or screen, so as not to damage the display matrix or optical module. Move the hair dryer evenly along all sides of the smartphone.
- 🌡️ Heat the perimeter during 2-3 minutes, periodically checking the temperature with your hand (it should be hot, but tolerant to touch).
- 🔄 Repeat the procedure. 2-3 times, allowing the body to cool slightly between cycles so that heat penetrates deeper into the glue layer.
- 👆 Check the elasticity of the glue, slightly pressing on the corners; if the plastic bends, then the glue has softened.
It's important not to overheat the device. If the body gets too hot, the internal plastic cells can deform, and the battery can swell. The optimal temperature is when the hand is hot, but you can hold your finger on the surface for a couple of seconds.
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Use a screen suction cup to create surface tension during heating, which will help hot air penetrate the microslits between the lid and the frame, speeding up the process of softening the adhesive.
Rear panel removal technology
Once the body is warm enough, you can start the most critical step: take a plastic shoulder blade or a thin mediator, and it's best to start at the bottom end or at the side edge, where there's usually a small gap or notch for the fingers.
Carefully insert the tool into the gap between the frame and the lid. You don't have to try to shove the blade deep at once; your job is to layer the glue. You move the tool along the perimeter, gradually moving upwards. You'll hear the characteristic sound of the adhesive coming off.
| The hull area | Feature of withdrawal | Risks. |
|---|---|---|
| Lower end | There's a lot of speaker here. | Damage the speaker membrane |
| Side edges | There are antenna inserts | Breaking down plastic antennas |
| Upper end | Main camera area | Damage to the plume or lens |
| Scanner area | Fingerprint sensor attachment | Break the scanner plume. |
When you go all the way around the perimeter, the lid should be easy to remove. If it's held tight in some area, don't use force. You better warm it up with a hairdryer again. A sharp jerk can cause you to tear the lid off along with the internal plumes that can be glued to it.
In the Redmi 5A, the fingerprint scanner (if any) is often glued to the inside of the lid. Be extremely careful when you pull the panel aside so as not to damage the thin plume connecting the scanner to the motherboard.
What to do if the cover is broken when removed?
Access to internal components and screws
Once you successfully dismantle the back, you'll see the inside of the smartphone, but it's too early to take out the battery or other parts, and most of the components are covered by a metal or plastic protective plate that's screwed.
In the Xiaomi Redmi 5A, the main board and battery connector are covered by a wide plate, which is fixed by several screws of different sizes. It is crucial to remember (or photograph) the location of each screw, as they can differ in length and diameter of the thread.
⚠️ Warning: The screws that hold the battery connector are often shorter than the others, and if you screw a long screw into a short hole, you can punch through the board, which will lead to irreversible failure of the device.
Use a magnetic screwdriver to carefully remove the fastener, fold the screws in the order of their removal or use a magnetic mat with markings, which will save you time when you reassemble and prevent the appearance of "extra" parts.
Under the plate, you'll see the plugs of the display, touchscreen and battery, and before any manipulations inside the case, the first thing you need to do is turn off the battery, and this will completely power the device out and protect the electronics from static electricity and short circuits.
Frequent mistakes in disassembly and how to avoid them
Even experienced craftsmen sometimes make mistakes, let alone beginners who pick up a screwdriver for the first time, and understanding typical problems will help you avoid fatal consequences and keep your smartphone working.
One of the most common mistakes is ignoring the heat, and trying to stab a cold lid results in chipped plastic that can't be hidden, and it's very easy to puncture a battery with a sharp object, which can cause fire.
- ❌ Using a metal blade instead of a plastic blade – the risk of short circuit and scratches.
- ❌ Excessive force in snapping - breaks the plastic latches of the body, after which the lid ceases to hold tightly.
- ❌ Forgetting to turn off the battery before disconnecting other plumes - can burn the power controller.
Another mistake is the loss of screws, which are very small and can easily roll under furniture or into a carpet, and work in a confined space, such as a tray with high sides, so that all the parts remain in sight.
Remember the statics: In winter or dry, static electricity accumulates on your clothes and body, and before touching the internal components of your smartphone, it is advisable to touch the grounded metal object to discharge the static potential.
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The key to a successful disassembly is patience. Take your time, heat the glue thoroughly and check every step so you don't turn a simple repair into a new phone.
Assembly and inspection of the device
Once you've done the necessary repairs (replacing the battery, cleaning the speaker, or changing the screen), the assembly phase begins, which requires the same care as disassembling, and make sure that all the plumes are plugged in before the click and are fixed with the clamping slats.
Before you stick the lid, be sure to plug in the battery and check the health of your smartphone. Turn on the device, check the sound, vibration, touchscreen and cameras. If everything is working properly, you can turn off the phone and start the final stage.
To re-fix the lid, it is best to use a special glue B-7000 or T-7000, or a quality two-way tape for smartphones. Apply the glue with a thin strip along the perimeter, avoiding hitting the cameras and speakers. Press the lid and lock the device with rubber bands for 15-20 minutes before the initial grasp of the glue.
Properly executed assembly ensures that your Redmi 5A will last for a long time.Do not neglect the quality of materials for gluing, as it depends on protecting the insides from dust and moisture.