How to disassemble the Xiaomi Redmi 4X phone: a step-by-step guide

Smartphone Xiaomi Redmi 4X deservedly considered one of the most reliable devices of the budget segment, released by the Chinese company. However, even the most durable device over time requires maintenance: the battery loses capacity, the charging connector loosens, and in the dynamics accumulates dust. Independent dismantling Xiaomi 4X allows you to save a significant amount on the services of the service center and extend the life of the gadget for another couple of years.

The process of dismantling this device has its own peculiarities related to the design of the metal case and the location of the plumes. Unlike modern models with glass covers, it uses a classic circuit with a fixed battery, which requires accuracy when turning off the power. Before starting work, you need to prepare a workplace and a specialized tool to avoid damaging fragile elements of the structure.

This guide will help you safely remove the battery, replace the display module or clean the internal components from contamination. It is important to understand that any manipulation of the hardware you make at your own risk, so following the algorithm of actions is critical to the successful completion of the repair.

Tools and workplace preparation

A good disassembly of a smartphone is impossible without a minimum set of tools. You should not try to pick the case with a knife or a needle, as this is guaranteed to lead to chips and scratches on aluminum. To work with the Redmi 4X, you will need specific tools that can be purchased from any radio store or order online.

Pay special attention to lighting. Small screws and thin plumes are not easily visible in dim light, which increases the risk of error. Organize the space so that nothing is distracting, and all the parts can be folded into separate containers so that they do not lose them.

⚠️ Warning: Before any work begins, be sure to completely turn off the device. Attempting to disconnect the plume under voltage can lead to a short circuit and the motherboard fails.

Here is a list of the necessary equipment for the successful procedure:

• 🛠️ A set of Phillips screwdrivers (cross) sizes PH000 and PH00 hull-screw.
• 🎴 Plastic spatula (mediator) or suction cup for neat opening of the body without damage.
• 🧲 Magnetic mat or container with cells for sorting screws of different sizes.
• 🔦 Bright lamp or table lamp for high-quality lighting of the working area.

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Use a magnetic screw mat and draw a diagram of their location directly on it – this will save you hours when you build it back.

Primary dismantling: SIM-map and back cover

The process of dismantling Xiaomi Redmi begins 4X snatch SIM-It's standard procedure, but it's important not to lose a little clip, and the tray is on the bottom end of the device, to the left of the charging socket, and after you remove the tray, you can start removing the back panel.

The back cover in this model is plastic, but it fits tightly with a metal frame. It's best to remove it with a suction cup if you have one. If you don't have a suction cup, gently tuck the lid with a plastic blade in the area of the camera or in the lower corner where there's a small gap. Move the shoulder blade around the perimeter, snapping the plastic latches.

Don't put too much effort. If the lid isn't removed, there's an unconnected latch somewhere. Walk the shoulder blade again all over the circuit. Once you remove the lid, you'll see a metal screen covering most of the electronics, and a battery.

Removal of metal screen and access to the board

And underneath the plastic cover, there's a metal screen that protects the interiors from mechanical damage and shields the radio signals, and it's screwed with lots of small screws around the perimeter and in the center, and you'll need a PH000 screwdriver, because the screws here are very small.

With all the screws you can see, don't rush to take the screen off. Pay attention to the connectors that can go under it or be closed. In the Redmi 4X, a metal plate also presses the display and battery plumes. Carefully lift the screen from the bottom and put it aside.

Now you have the motherboard open, and you have the main modules: the processor (hidden under a metal casing), the memory module, the cameras, and the plume connectors, and you have to be very careful not to touch the open contacts with your fingers so you don't leave static electricity.

⚠️ Warning: Metal screen mount screws may have different lengths. Remember or mark where each screw was twisted so that when assembled, the body is not broken too long fastener.

Disconnecting the battery and removing the motherboard

The most important step is to turn off the battery, which is the first step you have to take once you get access to the board, and the battery plume is connected to the bottom of the motherboard, and you need to gently tuck the connector in with a plastic blade or nail, moving from the bottom up, and unplug it.

Once you turn off, you can remove the motherboard itself, it's locked in multiple screws and it's held on the plumes, unscrew all the mounting screws of the board, and then you need to disconnect the plumes of the display, touchscreen and main plume (which goes to the charging connector).

To retrieve the board, you also need to remove the main camera module, as it often interferes with or attaches to the board. Once all the plumes are turned off, the board is easily removed from the case. Don't pull the components if they don't go, check if all the screws are twisted.

Replacement of the battery and work with the bottom plume

Xiaomi Redmi 4X has a 4100mAh battery. It can swell or stop charging over time. It needs to be unstuck from the body to replace. It's attached to a double-sided tape. Use a hair dryer to warm up the back wall a little bit (if the battery sticks to it) or gently smack the battery itself with a plastic card.

Often users turn to disassembly due to charging problems, in which case the bottom plume with the Micro-USB connector is required to be replaced. This plume is also an antenna, since contacts are connected to it to transmit the signal. When installing a new plume, make sure that the contact pads are cleanly adjacent to the response parts in the housing.

When you install a new battery, remember to remove the protective film from the adhesive layer. Press the battery over the entire area for a secure lock, and then you can plug the new battery plume into the motherboard before you click.

⚠️ Warning: Never puncture or bend a lithium polymer battery. Damage to the sealed shell can cause fire or chemical burns.

Comparison of Redmi 4X components and analogues

Understanding the design of the Redmi 4X helps to assess its maintainability compared to other models of the time. Unification of parts and logic of assembly make this phone a great testing ground for beginners.

The table below compares the key features of disassembling this model with other popular devices of the Redmi line:

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The Redmi 4X has one of the easiest build schemes among metal smartphones, making it ideal for the first self-repair experience.

Assembly of the device and verification of functionality

The assembly is done in reverse sequence. First, set the motherboard, plug in all the display and touchscreen plumes. Make sure the connectors are in and snapped. Then screw the board with screws, but don't tighten them too much so as not to break the soft metal thread.

After installing the board, plug the battery in. Only then you can install the metal screen and twist its screws, and make sure that the antenna contacts (gold springs) match the response parts on the bottom plume and back cover.

Cover the case with a plastic lid, snap it around the perimeter. SIM-Check the sensor, the speakers, the microphone and the charging. If everything works correctly, Xiaomi disassembly 4X successfully.

Frequently Asked Questions (FAQ)