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

Xiaomi Redmi 4 Pro, also known as Redmi 4 Prime, has proven to be a reliable device with a metal body. However, even the most durable gadgets require intervention over time: whether it is replacing broken glass, installing a new battery or cleaning the speaker from dust. Self-disassembly is a real way to save money and extend the life of your device, if you approach it wisely and accurately.

Unlike many modern models, where access to the insides is limited, the process is relatively logical but requires care. The metal case hides many small screws and fragile plumes, damage to which can lead to the failure of the phone. In this article, we will discuss in detail each stage of dismantling, so that you can safely perform repairs at home.

Before you start, make sure you have the right lighting and space. Deconstructing your smartphone requires concentration, because it's easy to lose small fasteners or damage components when you're distracted. Get ready for the painstaking work where every step counts for the final result.

Preparation of the workplace and necessary tools

You can't disassemble quality without the right tools. Using inappropriate items like kitchen knives or thick screwdrivers often results in scratches on the case and torn screws. You'll need a specialized kit that you can buy from any electronics store or order online.

The backbone of your arsenal should be a PH000 or PH00 sized cross screwdriver, which is ideal for the screws used in the Redmi 4 Pro design. Also, you can not do without a suction cup to lift the display, a plastic shovel (mediator) and tweezers with thin curved edges for working with small parts.

⚠️ Attention: Using metal tools to snap plastic latches can short circuit on the board or damage to the plumes.Always use plastic.

To collect screws, prepare a magnetic mat or a sheet of paper on which you will unfold the fastener in order of dismantling. This will help avoid confusion, since the screws can have different lengths and threads, and installing a long screw in a short hole can break the motherboard.

• 🔧 Phillips screwdriver PH000 hull-screw.
• 🧲 Magnetic substrate for sorting fasteners.
• 📱 Plastic spatula and suction cup for opening the body.
• 🔦 Lighting for illumination of hard-to-reach places inside the smartphone.

Primary dismantling and removal of the back panel

The process begins with disconnecting the device from the network and retrieving it. SIM-The card tray is on the bottom end, next to the Micro-USB port. And then you have to unscrew the two screws that are on the sides of the charging socket, and these screws lock the bottom of the case, and removing them is the first step to getting inside.

Then comes the most critical point: the detachment of the back cover. In the Redmi 4 Pro, it's metallic and it's held on plastic latches around the perimeter. Put a suction cup on the bottom of the back cover, pull up slightly, creating a gap, and carefully drive the plastic blade along the edges.

Move smoothly, without jerking, sequentially snapping the locks. If you feel strong resistance, don't use force, check if all screws are twisted. Sometimes the screws can be hidden under stickers or plugs, although in this model they are standard.

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If the back cover doesn't lend itself, you can slightly warm the body perimeter with a hair dryer to 60-70 degrees, which will soften the glue and make the plastic more elastic.

Once you've successfully detached the lid, put it in a safe place, and you'll see the inside of your smartphone, where you can see the battery and the plastic linings, and you can see the basic components.

Disconnection of the battery and removal of protective plates

The first thing you do after you remove the lid is to turn off the device, find the battery connector on the motherboard, and gently unplug the plume, which is a critical step to prevent short circuits from continuing with the electronics.

Next, you take off the plastic pad covering the top and bottom of the board, and it's mounted with multiple screws of different sizes, remember or write down the location of each screw, because they can vary in length, the bottom plate covers the speaker and connectors, and the top one covers the main camera and display connectors.

When unscrewing the screws, be careful not to damage the thread in the plastic racks. If the screw is "sauce", do not press hard, try to turn it slightly in the opposite direction, and then twist it again. Use tweezers to extract the screws from deep wells.

Once the plates are removed, make sure all connectors are free, and now you can move on to more complex manipulations of the main modules, and remember that the plumes are very thin and require careful handling.

Extraction of the motherboard and basic modules

To access the motherboard, you have to turn off all the remaining plumes, including the display, touchscreen, front camera, main camera module, and volume and on button plumes, each connector has its own lock or tight fit.

Carefully put the connectors in a plastic blade. Some connectors may need to bend the metal locking bracket first. After all the wires are turned off, unscrew the screws that hold the board itself. There are usually about four of them around the perimeter.

⚠️ Attention: When removing the board, watch for antenna contacts. They are often on the ends of the board and can get caught in the frame, which will lead to their deformation.

Take the board off by lifting it slightly from one edge. Notice the vibrator and the speaker, which can be glued or secured separately. In the Xiaomi Redmi 4 Pro, the board is compact enough to fit tightly into its bed.

• 📷 Disconnect the main camera plume (located closer to the center).
• 🎤 Don’t forget the bottom microphone plume running through the entire body.
• 🔌 Carefully remove the board, controlling the position of the connectors.
• 🔋 Check the status of the battery contact area.

Now the motherboard is free and can be replaced or serviced, and this also opens up access to a replacement charging socket, which in this model is soldered on a separate board or is part of the bottom plume.

Replacement of the battery and work with adhesive base

In the Redmi 4 Pro, the battery has a capacity of 4100 mAh and is fixed to double-sided tape. Over time, the glue loses its properties, but often the battery is held tight enough. Do not under any circumstances try to tamper with the battery with a metal tool - a puncture can cause fire.

Use a plastic card or a special spatula to gently separate the battery from the case, you can slightly warm the back of the device (if the lid is not already removed), or use a dryer at low temperatures, directing air flow to the battery area through the open space.

After removing the old battery, clear the seat of glue residue. For the new battery, it is recommended to use a special glue B-7000 or double-sided electronics tape, which will ensure tight fit and no backlashes, which can lead to detachment of the plume when falling.

When installing a new battery, first connect the connector to the board, check the device's power on, and then lock the battery into the case, which will make sure that the new component is healthy before final assembly.

Assembly of the device and verification of functionality

The assembly is done in reverse order, but requires even more care. Put the motherboard in place, making sure it lay flat and all screw holes match. Twisting the locking screws, but do not drag them over so as not to damage the plastic.

Connect all the plumes: display, touchscreen, cameras, buttons and last but not least the battery. Make sure each connector is inserted before the click and locked. Mistakes at this point can cause the phone to fail to turn on or the sensor to work.

Before you finally install the back cover and swirl all the screws, do the initial test. Press the power button. If the screen catches fire, the MIUI logo comes up, and the phone responds to touch, you're on the right track.

⚠️ Warning: If the phone doesn't turn on after assembly, don't rush to disassemble it again.Plug in the original charger and wait 10-15 The battery could have been discharged to zero during repairs.

Install plastic pads, twist all the screws and snap the back cover. Walk your fingers around the perimeter to make sure there are no gaps and creaks. Successful assembly brings the device back not only to its appearance but also to its full functionality.

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Control check of all functions (camera, sound, Wi-Fi, sensor) should be carried out before the full sealing of the housing to avoid repeated disassembly.

Frequently Asked Questions (FAQ)