The need to open the Xiaomi Redmi 4A can arise for various reasons: replacing a broken screen, installing a new battery or cleaning from dust. This budget smartphone is characterized by a monolithic design, where the back cover is removable from the point of view of the average user. To get to the internal components, you will need not only patience, but also a special set of tools. Do not underestimate the complexity of the process, since careless actions can lead to damage to plumes or plastic.
In this article, we will take a detailed look at how to open the Xiaomi Redmi 4A without critical damage to the body. We will go through every step from unscrewing the screws to turning off the display plumes. It is important to understand that opening the device will automatically void the warranty if it is still valid. However, if the smartphone is no longer warranty or damage requires immediate intervention, this will be your main guide to action.
Before you start, make sure you have a well-lit workplace. Small screws and fragile parts are easy to lose or damage in a hurry. Preparation is half the success of any electronics repair. Let's figure out what it takes to safely disassemble your gadget.
Tools and workplace preparation required
You can't do a good job of disassembling without the right tools. A standard set of stationery is not going to work here, because you can easily rip off screws or scratch the case. You'll need a specialized smartphone repair kit, which you often find in electronics stores or marketplaces.
The main tool will be a small cross screwdriver, usually marked as PH00 or PH000. Also an indispensable assistant will be a plastic blade (mediator) for clipping. Metal tools are not recommended to use, as they can easily damage the internal elements or short contacts on the board.
- 🔧 A set of precision screwdrivers (cross and flat)
- 🛠️ Plastic blades and mediators for opening
- 🌡️ A hair dryer or thermophen to heat the glue (if the screen is glue-on)
- 🧲 Magnetic mat or organizer for screws
Special attention should be paid to the organization of space. The screws in Redmi 4A can vary in length and diameter. If you confuse them when you build, you can break the motherboard or damage the thread in the plastic pillars of the case. It is recommended to use a magnetic mat or simply spread the screws on a piece of paper, marking their location.
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Use paint tape to sign the dismantling steps directly on the screws if you're afraid to confuse them, which will save time when you reassemble.
Primary stage: SIM removal and rear cover removal
The process of how to open Xiaomi Redmi 4A, It starts with the simplest of things. The first step should always be to shut down the device completely. It is strictly forbidden to operate the phone on, as this can short circuit and the board will fail. SIM-memory-cards.
The back cover of this model is supported by plastic latches around the perimeter and several screws under plugs. Unlike modern models, there are no hidden screws under the stickers, but there are screws closed with decorative elements.
⚠️ Warning: Do not force the back cover without checking for screws, this will break the plastic latches and the lid will dangle.
To remove the lid, use a thin plastic spatula or suction cup. If in your modification the lid is planted on glue (which is rare, but happens in refurbished devices), you will need to carefully warm up the hairdryer around the perimeter to a temperature of 60-70 degrees. In the standard case, it is enough to gently tuck the lid in the area of the charging connector or speaker and hold the shoulder blade along the faces.
Once the lid is removed, you will have access to the battery and the bottom of the board, but this is not yet full access to the main components.
Dismantling the battery and protection of the board
Immediately after removing the back cover, take the battery out. In the Xiaomi Redmi 4A, the battery can be glued to the body or fixed with double-sided tape. Sharp pulling can damage the cell, which can cause fire or loss of capacity.
The first thing you need to do is to disconnect the battery plume from the motherboard, and to do that, carefully remove the metal plate that covers the connectors, which is usually secured by several screws, and after removing the protection, disconnect the plume, slightly undermining it with a plastic blade.
- 🔋 Turn off the battery plume before any manipulations
- 🛡️ Remove the metal board shield
- 🧣 Use a plastic card to retrieve the battery
- 🧹 Clean the contacts of oxides if necessary
If the battery is glued, use a plastic card or a special tool for tweaking. Do not use metal objects to avoid piercing the lithium polymer cell. In difficult cases, you can slightly warm the back wall of the case (on the outside) to soften the glue.
☑️ Safely extracting the battery
Once the battery is removed, it opens up the screws hidden beneath it and the bottom of the structure, a critical point, as many newcomers let the screws under the battery and then break the case in an attempt to remove the frame.
Disassembly of the main board and disconnection of plumes
Now that the battery is out, you need to remove all the visible screws that attach the plastic interlayer frame and the motherboard itself. Xiaomi Redmi 4A uses a lot of fine fasteners. Notice the screws in the corners of the case and along the side faces.
The next step is to turn off all the plumes going to the board, which is the plume of the display, the touchscreen, the bottom charging plume, the volume buttons and the main speaker, and each connector has its own fixing features, so you need to be careful.
| Component | Location of the plume | Type of fixation | Features |
|---|---|---|---|
| Display. | Top of the pay | Latch + pinch bar | The widest and most fragile plume |
| touchscreen | Next to the display | Latcher. | Requires care when bending. |
| Lower plume | The bottom of the fee | Clamp connector | Coming from the charging jack |
| antenna wire | Corner of fees | Round connector | Shoot vertically upwards |
And you pay special attention to the antenna wire, and it's connected by a circular connector that you have to pull straight up, and if you pull it to the side, you can pull the connector off the board, and when you shut down all the communications, you can take out the motherboard itself.
Nuances of plume work
The board can sit tightly in the slots. Don't pull it sharply. Check if all the screws are twisted and if there are hidden locks in the area of the cameras or speakers.
Removal of display and touch screen
The most difficult step in how to open the Xiaomi Redmi 4A to replace glass is working with the display, which is often glued to a metal frame or plastic medium frame, and requires heating to remove it.
Use a hair dryer to warm the screen to about 80 degrees. Keep the hair dryer at a distance of 3-5 cm and move it constantly so as not to overheat the matrix. After warming up, use a thin fishing line or a special knife to cut the layer of glue.
- 🔥 Warm up the screen perimeter with a hairdryer evenly
- ✂️ Carefully cut the glue with a line or knife
- 🧼 Remove the remnants of old glue from the frame
- 🧪 Degrease the surface before new gluing
Be very careful: the matrix in Redmi 4A is very fragile. Any pressure with a finger or tool in the center of the screen can lead to ink spots or cracks. If your goal is to replace only the touchscreen (glass), then the process is even more time-consuming and requires a separator, so at home often change the module assembly.
⚠️ Warning: Do not exceed the temperature when heating 90-100 Prolonged overheating can damage the LCD matrix, causing yellow spots or broken pixels.
After removing the old module, be sure to clean the frame of the glue residue. The new part should be placed on a clean and low-fat surface. Use a special glue B-7000 or double-sided tape for the screens to fix.
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Replacing the display module assembled (frame + screen + glass) for the Redmi 4A often saves time and nerves, as glass reglazing at home without equipment is almost impossible.
Assembly of the device and verification of functionality
The assembly is done in reverse order, but it requires care. First, install the motherboard, plug all the plumes in, and fasten the protective plates, and make sure that each connector is in place with a characteristic click.
Then set the battery. Before you finally spin the case, do a primary check. Connect the battery plume and try to turn the device on with the power button. If the smartphone is on, check the touchscreen, sound, vibration and cameras.
If everything works, turn off the battery again (for safety), put all the plumes straight on the guides so they don't press with screws. Twist all the screws, keeping order. Don't twist the screws too hard to break the thread in the plastic.
The final step is to put the back cover in place. Make sure all latches are intact. Start putting the top cover on (the camera), then press the sides and bottom. A characteristic click around the perimeter will confirm the installation is correct.
Once assembled, turn the phone on and test it in active mode, check if the device is warming in the gluing areas, if there is no extraneous noise, and if it is successfully assembled, it gives the device a second life.