Smartphone Xiaomi Redmi 4X has proven to be a reliable budget device, but time does not spare even high-quality electronics. broken glass, worn-out battery or failed charging connector are typical problems that require intervention inside the case. Self-disassembly allows you to save a significant amount of money on the services of the service center, if you act carefully and consistently.
The process of dismantling this device has its own technical features related to the design of the metal case and the location of the plumes. Careful study of the algorithm of actions before starting work is critical, since careless movement can damage fragile components. Below we will discuss each step in detail to minimize risks and ensure a successful outcome.
Before you start, you need to prepare a good lighting workplace, which allows you to see small screws and connectors, eliminating errors. Remember that the screen module in Redmi 4X is glued to the frame, so replacing it will also require you to separate the display from the base, which increases the complexity of the task.
Essential tools and precautions
Good workplace preparation and specialized tools are half the success of the whole event. To work with the Xiaomi Redmi 4X, you will need a minimal but specific set that will ensure the safety of external panels and internal boards. Using inappropriate items such as kitchen knives or thick needles often leads to scratches and chips.
First of all, get a suction cup and a set of plastic mediators (scapula). Metal tools should be used with extreme caution, mainly for screws, but not for tanning plastic or glass. Also an indispensable assistant will be a hairdryer or thermotable for softening the adhesive layer.
- 🔧 Screwdriver kit: cross (PH00, PH000) flat.
- 📱 Plastic blades and mediators for opening the body.
- 💨 Suction cup for careful lifting of the display.
- 🌡️ Hair dryer or heating platform for softening glue.
⚠️ Warning: Before starting any work, be sure to completely turn off the smartphone. Attempting to disassemble the on device can lead to a short circuit and failure of the power controller.
Don't forget to prepare the screw folding container, because they can be of different lengths and threads, and if you mix them up when you build them, you can damage the plastic thread or you can break through the body, and you can keep the space around you focused and keep the small parts intact.
Removal of the back cover and dismantling of the frame
The Redmi design 4X This means that there is a metal frame that encircles the body, which makes the process of removing the back cover slightly different from the all-plastic models. SIM-cards so as not to damage its mechanism during the heating process.
Carefully warm the perimeter of the back cover with a hairdryer. Don't keep the hot air flow at one point for too long to overheat the internal components or the cover itself. The optimal softening temperature of the adhesive is about 80-90 degrees Celsius, the plastic should become warm to the touch, but not melt.
After heating, insert the suction cup into the bottom of the lid and pull up slightly to create a gap. Insert a plastic mediator into the resulting slit and guide it along the faces, cutting the adhesive layer. Act smoothly, without sharp jerks, so that the glass or plastic does not crack.
When the back panel is removed, you'll see an internal metal frame, screwed with a lot of screws, which hold the whole structure together, and the screws are located around the perimeter and in the center, and you'll have to unscrew everything, including those hidden under stickers or plugs.
☑️ Testing readiness for delimitation
Disabling the plumes and retrieving the battery
Once the metal frame is removed, the main board and battery are accessed, and the first thing to do is to turn off the battery plume from the motherboard, eliminating the risk of accidental closure of contacts when working with other components.
Use a plastic blade or nail to detach connectors. It is forbidden to use metal tools in the vicinity of the board contacts, as this can lead to irreversible damage to the chips. Display and touchscreen plumes also require delicate handling.
The battery in Xiaomi Redmi 4X is glued to the body with double-sided tape. It will require heating again to extract it. Push it with a plastic card or a spatula, trying not to puncture it. Deformation or puncture of the lithium polymer battery can cause fire.
- 🔋 Disconnect the battery plume first.
- 📡 Carefully disable antenna cables if they interfere with access.
- 🖥️ Remove the display plumes, putting them strictly upwards.
⚠️ Warning: Never try to remove the battery by putting it on the top edge where the contacts are located (BMS), Which makes it unusable for use.
If the battery is swollen, be very careful, the billowing battery takes up more space and holds tighter, and the risk of damage when removed is much higher, in which case you should warm the device especially carefully, avoiding local overheating bloating.
Replacement of the display and touch screen
The display module in Redmi 4X is a prefabricated structure where the glass, touchscreen and matrix are glued together. Most often, the outer glass is broken, but replacing only the glass at home is almost impossible without special equipment (separator and laminator), so the entire module is changed in the assembly with or without a frame.
If you buy a framed module, it's a simpler task: you need to move the motherboard, speaker and vibrator from the old frame to the new one, and if you have a frameless module, you have to separate the old screen from the metal base, and this process is time-consuming and requires careful removal of the old glue.
When installing a new module, make sure that all the plumes are snapped to the characteristic clicks. An insufficiently inserted connector can cause a broken touchscreen or bars to appear on the screen. After connecting the plumes, it is recommended to test the switch on before the final assembly.
How to check the new screen before assembly?
Pay special attention to the cleanliness of the frame surface before sticking the new screen. Residues of old glue, dust or fat can cause the new module to lie unevenly or peel off over time. Use isopropyl alcohol for degreasing.
Work with connectors and additional modules
The Xiaomi Redmi 4X lower board contains a charging connector (USB), microphone and main speaker. Often it is the charging connector that causes problems with charging the device. Replacing it requires dismantling the bottom of the case.
To access the bottom components, you need to remove the plastic insert of the antenna (if you have one in your revision) or work through holes in the metal frame. The antenna cable running from the top to the bottom has a specific connector latch that you need to open carefully.
| Component | Location. | Type of attachment | Difficulty replacing |
|---|---|---|---|
| Charging connector | Lower fees | Pike/Shleijk | Medium |
| Main dynamics | Bottom of the hull | Screws/Glue | Low. |
| Vibromotor | Under the screen | Clay/Paz | Low. |
| Front camera. | Upper part | Paz/Vint | Medium |
When replacing the charging connector, it is important not to damage adjacent tracks on the board. If the connector is soldered, you will need soldering equipment and skills to work with it. In some versions of the board, the connector can be on a separate plume, which makes repairs much easier.
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When assembling an antenna cable, make sure the connectors are tightly pressed. Poor antenna contact will lead to a sharp decrease in signal reception quality and Internet speed.
Assembly of the device and verification of functionality
The final stage, assembly, requires the reverse sequence of actions: make sure that all screws are returned to their places, and it is especially important not to confuse the screws of the motherboard mount and the frame, as they can differ in length.
Before you stick the back cover, do a full functional check. Turn on your smartphone and check the sensor, speakers, microphone, cameras, Wi-Fi and communication modules. If everything works correctly, you can apply new glue or use special adhesive tapes (B-7000) to fix the cover.
Apply a thin layer of glue around the perimeter. Excess glue that has protruded outside should be removed immediately until it has frozen. Once the parts of the case are joined, it is recommended to lock the smartphone with rubber bands for 15-20 minutes to polymerize the glue.
- ✅ Check the operation of all buttons (volume, on).
- 📶 Make sure you have a network and work GPS.
- 🔊 Test the sound in the speaker and through headphones.
- 📸 Take test pictures on both cameras.
⚠️ Warning: If the phone doesn't turn on after assembly, don't panic. Check if the battery plume and power plume have been completely snapped. Often the problem lies in poor connector contact.
A properly assembled Redmi 4X should work steadily, and the gaps between the body and the screen should be minimal. If you follow the instructions, the device will get a second life.
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The main secret of successful assembly is not to rush when installing screws and always check the device before the final bonding of the body.