Xiaomi’s Redmi line of smartphones has been well-deservedly popular for many years due to its excellent price-performance ratio. The Redmi 5A model has become a real bestseller in the budget segment, but over time even a reliable device may require intervention. Replacing a broken screen, installing a new battery or cleaning the speakers from dust are the main reasons why owners decide to disassemble the gadget.
The process of removing the back panel in this model has its own characteristics, which distinguish it from more modern devices with glass cases. The Xiaomi Redmi 5A cover is made of high-quality polycarbonate and is attached to a special adhesive compound around the perimeter. Understanding how to properly and safely remove this element is the first and most important step to successful repair. Mistakes at this stage can lead to damage to plumes or cracks in the case.
In this article, we will take a detailed look at all the steps of preparing and removing the back panel directly, learn what tools you will need to work, how to heat the adhesive without harming the internal components, and what to pay special attention to. A competent approach will allow you to maintain the presentable appearance of the device and avoid additional costs for the service center.
Tools and workplace preparation required
Before starting to disassemble the Xiaomi Redmi 5A, you need to organize a comfortable and safe workspace. The surface of the table should be clean, flat and well lit so that small details do not get lost, and you can clearly see the connection points. It is recommended to cover the table with a soft mat or fabric, which will prevent the smartphone from slipping and protect its screen from scratches during operation.
The toolkit for this procedure does not require complex industrial equipment, but the use of specialized devices will greatly simplify the task. The main emphasis is on accuracy, since the plastic of the case can be fragile if you carelessly handle the following items:
- 🔧 Set of screwdrivers - in particular, a cross screwdriver size PH00 or PH000 screw-twisting.
- 🎹 Plastic mediators or special blades for opening the body without damaging the latches.
- 🔥 Hair dryer - household or construction (at minimum temperature) for softening the adhesive layer.
- 🧲 Magnetic mat or organizer for sorting screws of different sizes.
⚠️ Note: Using metal tools (knives, blades) to lid is highly undesirable.The metal can damage the internal plumes or leave deep scratches on the frame if it slips off.
Special attention should be paid to the heating source. If you use a building hair dryer, keep it at least 10-15 centimeters from the body and constantly move to avoid melting the plastic. Temperature is critical: the glue should become elastic, but not liquid. Insufficient heating will break the plastic latches, and excessive can deform the rear panel itself.
☑️ Preparation for disassembly
The process of heating the glue layer and the primary opening
The key to removing the lid from the Xiaomi Redmi 5A is to properly prepare the adhesive layer. The factory adhesive that fixes the panel hardens over time, and trying to remove the lid on the cold is almost guaranteed to damage it. The uniform heating of the device's perimeter allows you to make the adhesive soft and plastic, which makes it easier to separate parts.
Turn on the hair dryer and direct the hot air to the ends of the smartphone. Move the device or hair dryer around, paying special attention to the corners and long sides of the body. The heating process usually takes 2 to 4 minutes depending on the power of the device. Periodically check the temperature of the case with your finger - it should become hot, but not burning.
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To check if the glue is ready, you can carefully try to tamper with the mediator, so if the plastic starts to whiten at the pressure or the resistance is too high, continue heating.
After enough warming up, take a thin plastic mediator, or at least a thin plastic card, and insert the tool into the junction between the back cover and the frame at the bottom of the device, where the speaker is usually located, and this is not a random location, because it has the least electronics and plumes, which reduces the risk of accidental damage when you move carelessly.
So, you have to move slowly, without jerking. Your job is to cut the glue layer, not break off the body. You have to push the mediator along the side edge, while you heat the area with a hairdryer if the glue freezes again. It's important to keep the tool's angle parallel to the plane of the screen so you don't get stuck with the internal components.
Perimeter latching technique
In addition to the adhesive layer, the Redmi 5A design includes plastic latches around the perimeter, which ensure that the lid fits tightly and prevents it from opening spontaneously when it falls, and once you've passed the mediator all over the circuit and loosened the adhesive, you need to gently snap those latches.
Start with a mediator or a special opener from the bottom corner up the long side. You'll hear the characteristic clicks, which are normal workflows. Don't put too much effort; if the latch doesn't work, then the glue in that place is not warm enough. Repeat the heating procedure for the problem area.
| The hull area | Features of autopsy | Risks. |
|---|---|---|
| Lower end | Located speaker, requires accuracy | Dynamic grid damage |
| Side edges | Tight latches, lots of glue. | Frame cracks with strong pressing |
| Upper end | Headphone jack and IR port area | Damage to antenna plume |
| Camera area | Complex geometry, lots of glue. | A chip of plastic around the lens |
Be extra careful on the top of your smartphone, next to the main camera and flash module. Here, plastic is often thinner and geometry is more complex. A sharp movement can cause chips around the camera hole, which will later be noticeable even with the lid installed. Smoothly bypass these areas, controlling the pressure of the tool.
What to do if the lid cracks at the opening?
Disabling plumes and complete removal of the panel
When all the latches around the perimeter are open, don’t rush to sharply tear off the back cover. Inside the Xiaomi Redmi 5A are plumes that can connect the panel to the main board. In this model, the main element that requires attention is the fingerprint scanner plume (if you have one in your modification) or antenna contacts that can be pressed with the lid.
Carefully lift the lid from the bottom, creating a small gap. Visually inspect the interior space. If you see thin plumes coming from the lid to the board, they need to be turned off. Use a plastic blade or dielectric-coated tweezers. Put the connector upwards, pre-bent the locking mechanism if present.
The scanner plume is a very delicate component, it's easy to tear when handled carelessly. If your version of the smartphone has the scanner built into the home button on the front panel, there may be no plumes on the back cover, but there may be contact areas for the antenna. Make sure there's nothing preventing the panel from fully separating.
⚠️ Warning: Never pull the plume to remove the lid! First disconnect the connector from the board, and then remove the lid to the side.
Once all connections are turned off, the back panel is completely free. Put it in a safe place with the outside down so that the glossy surface doesn't scratch, and now you have access to the battery, the main board and other internal components for further repairs.
Common mistakes in the Redmi 5A disassembly
Even with instructions, beginners often make mistakes that complicate the process or lead to breakdowns. One of the most common problems is trying to save time warming up. Lack of warm-up glue turns the removal process into a fight against plastic, which often ends with whitening on a black or golden case.
Another common mistake is to use tools that are too thick, and a thick mediator or, worse, a knife blade, enters the joint too deep and can cut through the antenna plume, which often runs along the perimeter of the case, and it is also dangerous to push hard on the center of the cover when it is removed, as this can lead to sales and damage to the battery.
A list of other common errors includes:
- 🚫 Ignoring screw sorting – screws of different lengths can be confused, which will lead to a breakdown of the board during assembly.
- 🚫 Haste when snapping - sudden movements break the plastic ears of the latch, which is why the lid then dangles.
- 🚫 Lack of screen protection – if you put your phone down with a screen without a soft substrate, there is a high risk of scratching the display.
Recommendations for reverse assembly and fixation
After the necessary repairs (replacement of the battery, cleaning or changing the screen), the lid should be installed in place. Before that, be sure to remove the residue of the old glue from the frame of the case and the lid itself. You can use isopropyl alcohol and a soft wipe. The surface should be clean and fat-free for better adhesion.
To fix a new lid or re-install an old one, it is best to use a special glue B-7000 or E-8000. Apply a thin strip of glue around the perimeter of the frame, avoiding hitting the speakers, microphones and connectors openings. Let the glue dry for 1-2 minutes so that it is no longer liquid, then gently apply the lid.
The gluing process requires uniform pressure. Apply a lid, aligning all the holes, and then evenly press the perimeter with your fingers. Don't squeeze the phone in your fist -- the pressure should be spot-like along the glue lines. For better fixation, you can wrap the phone in stationery gums for 15-20 minutes until the glue is grasped.
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The quality of degreasing the surface before applying a new glue directly affects the tightness of the body and the absence of gaps after assembly.