Xiaomi Redmi 4X Disassembly: A Complete Guide with Illustrations and Tips

Xiaomi Redmi 4X is one of the most popular budget smartphones of 2017, which is still in active use. However, over time, even such a reliable device can have problems, from a dead battery to a damaged screen. If you decide to fix the device yourself, disassembly is the first and most important step. In this article, we will explain in detail how to disassemble the Redmi 4X without damage, what tools you will need and what to look for.

It's important to understand that disassembling a smartphone isn't just about unscrewing screws, but it's also a little bit nuanced: hidden latches, brittle plumes, and the risk of damage to the board. We'll take a step-by-step approach to the typical novice error, and if you've never held an electronic screwdriver, maybe you should practice on an old device or go to a service center first.

Preparation for disassembly: tools and security measures

Before you start disassembling the Xiaomi Redmi 4X, make sure you have everything you need.Without the right tools, you risk damaging the body, plumes, or even the motherboard.

• 🔧 Set of screwdrivers (cross-haired) PH00, flat 1.0 mm, five-pointed Y00 logo-screw)
• 📱 Plastic mediators or shoulder blades (to separate the body without scratches)
• 🔥 Dryer or thermo-air station (to soften the adhesive under the battery)
• 🧲 Magnetic mat or container (to avoid losing screws)
• 🔋 Isopropyl alcohol (to clean contacts and remove glue residues)
• 🛡️ Antistatic bracelet (protection against static electricity)

Also, prepare your workspace: it should be well lit, free of dust and moisture. Work on a table with a soft substrate (like a rubber mat) so that you don't scratch the screen. If you're taking your smartphone apart for the first time, take a picture of each step, which will help you get the device back together properly.

⚠️ Warning: Don't take Redmi apart 4X Even if the smartphone is turned off, the residual charge can cause a short circuit when the contacts are accidentally closed.

Removing the back cover: hidden latches and life hacks

The Redmi 4X back cover is attached to the latches and glue, so it's a science to remove it without damage. Start by heating the body with a hair dryer (temperature no higher than 60°C) around the perimeter for 1-2 minutes. This will soften the glue and make it easier.

1. Insert the plastic mediator into the gap between the lid and the frame (start with the lower right corner where the volume buttons are located).
2. Carefully drive the mediator along the body, alternately snapping the latches. Don't put too much effort - if the lid does not lend itself, warm up again.
3. Pay special attention to the area around the camera and the headphone jack - there the latches are the most fragile.

If the lid is too glued (for example, after previous repairs), you can use a thin guitar string or a special thread for disassembling, hold it under the lid and carefully "saw" the glue, while simultaneously putting on the mediator.

💡

If the lid cracks when you remove it, don't panic. You can glue it with a Loctite 406 superglue or replace it with a new one (the original lid article is MB11016).

Removal of the battery: how not to damage the plumes

The battery in the Redmi 4X is glued to the body, and it's one of the most important things to do when you pull the battery by force, you can tear off the plume or damage the power controller.

1. Disconnect the battery plume from the motherboard (use a plastic blade to avoid closing contacts).
2. Tap the battery with a mediator in an area where there are no components (usually the bottom).
3. If the battery is not amenable, warm it with a hair dryer on the back (do not direct hot air on the board!).
4. Put a thin plastic card under the battery and carefully “cut” the glue, moving from side to side.

The Redmi 4X uses a 4100mAh BM43 battery. When replacing, choose only original batteries or certified counterparts (such as Baseus or Remax) to avoid bloating.

⚠️ Warning: If the battery is swelling, do not try to puncture or bend it! This can lead to fire.

Whether the plume is off the pay?|Is the battery heated to soften the glue?|Is there an isopropyl alcohol on hand for cleaning?|Is there a place to recycle the old battery?-->

Disconnection of plumes and dismantling of the motherboard

Once the battery is removed, you can start removing the motherboard, and the key is not to confuse the way the plumes are disconnected or damage the fragile connectors.

• 📸 Disconnect the camera plumes (main and front) - they are fastened by latches that open upwards.
• 🔊 Remove the speaker plume (located at the bottom of the board, next to the charging connector).
• 📶 Turn off the antenna wires (they are soldered to the board, so just bend them aside gently).
• 🔋 Unscrew all the screws holding the board (there are 8 pieces, of different lengths - remember the location of each one!).

The board in the Redmi 4X is not only screw-mounted, but also on the guides. Raise it carefully, starting from the top edge. If the board gets stuck, check if you forgot to disconnect any plume (often miss the light sensor plume).

Disassembly of the screen: removal of the touchscreen and display

The Redmi 4X screen consists of two parts: a touchscreen (touch layer) and a display module (liquid crystal panel) glued together, but when carefully disassembled, they can be separated.

1. Warm up the screen with a hair dryer around the perimeter (temperature 50-60 ° C).
2. Insert a thin plastic spatula into the gap between the touchscreen and the frame (start at the bottom edge).
3. Carefully drive the shoulder blade along the screen, separating the glue. Don't press too hard - the glass may crack!
4. After separation of touchscreen remove the display module, disconnecting its plume from the board.

If you replace only broken glass and the display module is intact, you can buy a separate touchscreen (article MB11017) and glue it yourself with LOCA glue. However, this process requires experience - if you glue it correctly, you can see "nyas" (divorces) on the screen.

💡

Replacing the screen in Redmi 4X is cheaper than buying a new smartphone (the original module costs ~ 2,500 rubles, the analogue - ~ 1,800 rubles). However, if you do not have experience, it is better to trust this to professionals: errors in gluing lead to air bubbles or idle areas of the touch screen.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 4X. Here are the most common problems and ways to prevent them:

• 🔧 Thrown screws - use a high-quality magnetic-tipped screwdriver and do not put too much effort. If the screw is still broken, it can be drilled dormantly.
• 🔥 Overheating of the board - do not point the hair dryer to the motherboard for more than 10 seconds.
• 📱 Damaged plumes – always poke them with a plastic blade, not a metal screwdriver.
• 💧 Liquid intake – if you clean the board with alcohol, let it dry completely before assembly (at least 10 minutes).

Another common mistake is the wrong build, for example, if you forget to plug in the fingerprint scanner plume, the smartphone will turn on, but the sensor will not work, so to avoid such situations, record each step or photograph the process.

Build a smartphone: reverse order and testing

The Redmi 4X should be built in reverse order, but with some nuances:

1. Make sure all plumes are tightly connected (they should click when fixing).
2. Before installing the battery, check if there is any dust or debris left in its place.
3. Twisting the screws cross-cross to evenly press the charge.
4. When installing the back cover, start by snapping the top, then gently press the rest of the edges.

After assembly, be sure to test the smartphone:

• 🔋 Check charging (plug the charger and make sure charging is underway).
• 📶 Make sure both work. SIM-maps and network.
• 🔊 Test the speakers and microphone (call another phone).
• 📸 Take a photo on both cameras.
• 👆 Check the touchscreen for responsiveness (especially around the edges).

If something doesn’t work, take your smartphone apart again and check the plumes are connected, most often because of a poorly fixed connector or contaminated contacts (clean them with alcohol).

FAQ: Answers to Frequent Questions