Disassembling the Xiaomi Redmi Note 4X is a necessary procedure when replacing a broken display, installing a new battery or repairing a charging port. Although the device came out several years ago, its metal body and robust design still attract users, but it is metal that creates certain difficulties when opening. Unlike plastic counterparts, it requires a special approach to heating and accuracy when working with the adhesive layer.
Before you start any manipulation of the hardware of your smartphone, you should be aware of the risks. Any careless movement can lead to damage to the plumes, cracks in the glass or even a battery fire when it punctures. 4X has hidden screws under the tray plug SIM-cards, the ignoring of which is guaranteed to break the case when trying to remove the back cover. This article will be your detailed guide, which minimizes risks and helps to conduct the procedure qualitatively.
To complete the operation successfully, you will need not only the desire, but also a specialized set of tools. You should not try to fit the lid with a knife or a screwdriver, as this almost always ends in dents on the frame. We will consider the process in stages, paying attention to the nuances of working with the Snapdragon 625 platform and the peculiarities of the layout of the internal modules.
Preparation of the workplace and necessary tools
Well, the quality disassembly begins long before you pick up the first tool. The first step is to organize the workspace. You need a flat, well-lit table, preferably with an antistatic coating or at least a clean surface without a pile. Small screws tend to fly in different directions, so having a magnetic mat or multiple containers for sorting the fastener is a must.
Now, to the list of equipment that the Redmi Note 4X should not be touched without, the main enemy of disassembly is the glue that glues the display module to the metal frame. To soften it, you need a hair dryer, preferably with temperature adjustment, so as not to overheat the battery or matrix. A normal household hair dryer will also work, but the process will take longer.
- 🔧 A set of precision screwdrivers (mandatory presence of cross-shaped) P2 and P0, flat for squashing).
- 🔥 Hair dryer construction or household for heating the adhesive layer.
- 💳 Plastic blades and mediators for safe opening of the body without scratches.
- 🧲 Magnetic mat or organizer for screws of different sizes.
- 🧤 Antistatic gloves to protect electronics from static electricity.
Pay special attention to the suction cup, which is going to be used to create a primary gap between the screen and the frame, if your smartphone has a very broken glass, the suction cup may not stick, in which case experienced craftsmen advise first to seal the front panel with transparent tape to create a smooth surface for fixation.
Primary stages of dismantling: tray extraction and screw unscrewing
The process of opening Xiaomi Redmi Note 4X It starts with the device being turned off. It's a critical step for the safety of the electronic board. When you turn it off, you turn it down. At the bottom of the device, on the end, you'll see a hole to remove the tray. SIM-Use a paper clip or a special needle to reach the tray.
Look inside the hole that formed. At the bottom, you'll notice two small screws that often go unnoticed by beginners, which are the ones that lock the bottom of the case. If you try to warm and open the phone without twisting them, the metal can deform, and the plastic tray cap can crack. Carefully twist them using a thin screwdriver.
⚠️ Attention: Screws inside the tray SIM-The cards have different thread lengths, remember their location or spread them in order of extraction, so that when assembled, the internal thread in the case is not damaged by a longer screw.
After removing the screws, carefully inspect the perimeter of the device.In some versions, there may be additional hidden mounting elements under the stickers, although in the Redmi Note 4X the main fixation is the glue and the two screws mentioned.
Heating of the housing and separation of the display module
The most important step is to soften the glue. Turn on the hair dryer and set the temperature around 80-90 Direct the hot air to the edge of your smartphone, warming the perimeter evenly. Don't keep the hair dryer still at one point more than the other. 3-5 seconds to avoid overheating LCD-matrix, which can lead to the appearance of yellow spots or detachment of the polarizer.
The heating process should last about 2-3 minutes. The metal body of the Redmi Note 4X conducts heat well, so the middle of the screen will also heat up. Check readiness can be gently touched with your finger (carefully, do not burn) - the metal should become hot, but tolerant to touch. After that, quickly but carefully, install the suction cup at the bottom of the screen, closer to the home button.
Pull the suction cup up, create tension, and insert a plastic spatula into the resulting microscopic gap. Don't use metal tools at this stage! Drive the spatula along the faces, gradually cutting through the glue layer. Move slowly, feeling resistance. If the glue is frozen, warm up the problem area again with a hairdryer.
Be careful in the corners of the device, where the plumes often pass, and a sudden movement can break them, and also make sure that the blade does not go too deep into the housing, so as not to touch the battery. Gradually, as you pass along the entire perimeter, you will free the display module from the frame.
Disabling plumes and removing protective screens
When the display module is separated from the body along the perimeter, don't try to remove it immediately. It's still connected to the motherboard with several plumes. Carefully bend the screen as if you were opening a book, and put it face down on a clean surface next to the case. Now you'll see the interior of the smartphone.
The first thing that catches your eye is a metal protective plate that covers the connectors of the battery and the display, and it's screwed up with a few screws, and you're going to need a magnetic screwdriver, because the screws are very small and fall out easily, and after you unscrew the plate, remove it and put it in a safe place.
Now you have to turn off the power. The battery plume is always turned off first. Use a plastic blade or nail to gently lift the connector up. Don't pull the wires! Once the battery is turned off, you can safely disconnect the display plume and the touchscreen. If you have additional protection in the form of black screens or films, they should also be carefully removed.
☑️ Procedure for disconnecting plumes
⚠️ Note: After the battery is turned off, the motherboard capacitors may retain a residual charge. Before touching any connectors, press the power button several times to completely discharge the power supply chain.
Dismantling the battery and replacing components
The most common reason for dismantling Xiaomi Redmi Note 4X is a battery replacement. The battery in this model is also planted on glue, but less aggressive than the display. Under the battery often there are plumes, so you need to act extremely carefully.
To extract the battery, you'd better use plastic cards or thin blades, carefully insert them under the edge of the battery and make sawing movements, gradually separating the adhesive base from the body, and if the battery sits very tightly, you can slightly warm the back of the body with a hairdryer, but don't overdo it.
| Component | Difficulty replacing | Risks. | The necessary tool |
|---|---|---|---|
| Battery | Medium | Puncture, fire. | Scapula, hairdryer |
| Display module | Tall. | Breaking glass, plumes | Suction, spatula. |
| Charging port | Tall. | Damage to the fees | Tweezers, screwdrivers. |
| Dynamician | Low. | Loss of screws | Screwdriver P0 |
When installing a new battery, make sure that its plume is not clamped and lies in the recess intended for it. It is better to glue the new battery to special adhesive tapes (B-7000 or double-sided tape for electronics) to make it easier to repair in the future. The original battery capacity for this model is 4100 mAh.
If your goal was to replace the charging port, you'll be able to access the bottom of the board after you take off the battery, the port can be soldered directly or connected via a plume. In Redmi Note 4X, you'll often find a separate plume that's pinned by screws. Carefully unscrew the locking elements and replace the module with a new one.
Assembly of the device and check of performance
The assembly is done in reverse order, but with one important feature: Before you finally glue the display and close the case, you need to do an initial check. Connect the plumes of the display, touch screen and battery to the motherboard. Turn on the device by pressing the power button.
Check the basics: touchscreen responsiveness, image performance, broken pixels, cable charging, if everything works correctly, turn off your smartphone, turn off the battery, and begin final assembly, and that will save you from having to reopen your phone if something goes wrong.
Apply a thin layer of B-7000 glue around the perimeter of the frame (or use a pre-made adhesive frame). Carefully install the display module in place, making sure the plumes are not covered by glue or clamped. Press the screen around the perimeter and lock it with rubber bands or a load for 15-20 minutes before the initial grasp.
In the end, twist all the screws, insert the tray. SIM-maps and wipe the screen from the fingerprints. - Xiaomi Redmi Note 4X Remember, the full polymerization of the adhesive takes about 24 hours, so on the first day, try not to expose the phone to extreme loads or moisture.