Smartphone Xiaomi Redmi Note 4X deservedly considered one of the most reliable devices in its class, but even such a durable technology over time requires intervention. a broken screen, failed battery or the need to clean the speaker is only part of the problems faced by owners. Self-disassembly device saves a significant amount of money on the services of the service center, if you perform all the actions carefully and consistently.
Before you start dismantling, you need to prepare the workplace, you need a clean surface with good lighting, where direct sunlight does not get into the view of small parts, and it is also important to get a specialized tool in advance, since the use of knives or pins can damage internal components or plastic fasteners.
In this guide, we will take a detailed look at the process of opening the case, turning off the plumes and removing the main nodes. Safety is the number one priority, so ignoring simple precautions can cost you the health of the gadget.
π What is the main reason for your disassembly?
Replacement of a broken screen
Battery replacement
Dust cleansing
Curiosity
Other
Quality training is half the success of the whole operation. To work with the Xiaomi Redmi Note 4X, you will need a minimal but specific set of tools that can be purchased from any electronics store or marketplace. Using inappropriate items such as kitchen knives often leads to chipped frames or glass damage.
First of all, you need a heating element. The glue holding the display module is very strong at room temperature, and trying to pull the screen "cold" is guaranteed to destroy it. Use a hair dryer or special heater to soften the adhesive to a state where it will no longer resist mechanical action.
Also, don't forget to use protective gloves and an antistatic mat. Static electricity stored on the human body can damage sensitive power controllers or processors. Even if you don't see sparks, a discharge of several thousand volts can be fatal to electronics.
- π§ Suction cup for raising glass or thin mediator-plate.
- π₯ Hair dryer construction or household with temperature adjustment.
- πͺ A set of screwdrivers with interchangeable bits (cross-cross) PH00, PH0).
- 𧀠Antistatic gloves and dielectric-coated tweezers.
π‘
Use powder for children or talc on gloves so that they do not stick to the glass and do not leave greasy marks when working.
Dismantling the back cover and main board
The process begins by removing the back panel, which in the Redmi Note 4X is made of metal and is attached to a bilateral tape around the perimeter. Heat the perimeter of the device with a hairdryer for 2-3 minutes, holding the nozzle at a distance of 3-4 cm so as not to overheat the internal components. After heating, insert a suction cup at the bottom of the cover and pull up, creating a gap.
Insert a plastic blade or mediator into the gap, and then you can use the tool all along the perimeter, feeling the resistance of the glue, and the metal cover is flexible enough, but it can deform when you exert too much effort, so you can gradually reheat the complex areas.
Once the lid is removed, you'll have access to the insides, and the first thing you need to do is unscrew the screws that lock the plastic bar that covers the plumes, and they're usually about 10, and they can be of different lengths, and it's important not to confuse them when you build them back, because a longer screw screw screwed into a short hole can break through the motherboard.
When the screws are removed, remove the plastic pad, and below that you'll see the connectors of the display plumes, the touchscreen, and the main camera. Before you turn off the plumes, you need to disconnect the battery to avoid short circuit, and the battery plume is under the metal plate or side, depending on the board revision.
β οΈ Attention: Never pull the plume itself when you turn it off! Connectors have special latches or they just sit tightly in the slots.
Removal of the battery and replacement of elements
In the Xiaomi Redmi Note 4X, the battery is glued to the body with a powerful double-sided tape, which is the standard for modern smartphones. Removing it often requires reheating the back of the device. Donβt try to smack the battery with metal objects β this can cause it to puncture and fire.
Use a plastic card or a special spatula, sticking it under the battery and making sawing movements. If the design includes special retrieval tongues (which is rare in this model), use them. In most cases, you will have to be patient and carefully separate the adhesive layer by a millimeter.
When installing a new battery, be sure to apply a new layer of glue or use ready-made adhesive tapes (B-7000) to ensure that the battery fits tightly and prevents it from bloating from overheating during operation.
| Parameter | Original | Quality copy | Cheap copy |
|---|
| Capacity | 4100mAh | 3800-4000 mAh | 2500-3000 mAh |
| Weight. | ~75g | ~70g | ~50-60g |
| Cycle resource | 500+ | 300-400 | 100-150 |
How to check the battery multimeter?
The normal voltage of the lithium-polymer battery in the off state is from 3.7Into 4.2If the multimeter shows less than 3.0B, the battery is deep discharge and may not be charged without a "push" by a special charger.> Replacement of the display module and touch screen Replacement of the screen on the Redmi Note 4X β The most common repair procedure in this model, the display module is a single assembly (LCD + touchscreen + It's a lot easier to replace, so you don't have to separate the glass from the matrix, you just have to move the control board and the speaker, first, warm up the front panel with a hair dryer around the perimeter, and be careful, the matrix is afraid of overheating, so the temperature should not exceed. 80-90 After softening the glue, gently suction the glass with a suction cup and insert a mediator. Move slowly, trying not to damage the remaining parts of the glass, if any. After removing the old module, clear the new screen frame of the protective film (if any) and check the integrity of the plume. Install the module in the case, connect the plumes to the motherboard and check the operability of the touchscreen and images until final gluing. This will save time if you find a broken item. π§Ή Wash the inside of the new glass with alcohol to remove dust. π§ͺ Use the glue. B-7000 or B-6000 frame-hold. β³ Let the glue dry. 5-10 minutes before installation in the case. 𧱠Use rubber harnesses to fix the screen while drying glue. β οΈ Note: When connecting the display plume, make sure that it is up exactly the first time. Misalignment can cause the contact paths on the plume to break, after which it will be impossible to restore the image. The interior space of the Xiaomi Redmi Note 4X is compact enough, and many elements are located tightly together. Particular attention is required by the lower board, where the Micro-USB charging connector and the main microphone are located. Often this is where moisture or dust gets into, causing charging problems. To replace the bottom plume, you need to unscrew several screws that hold the plastic platform speaker. The speaker in this model is large enough and attached to the screws, and also glued with a sealant. When removing the cable, you do not damage the cable, or the white one is connected to the wired platform. When you build this wire, it's important to put it in the right grooves, otherwise you can squeez it over with a lid, which will lead to loss of signal. Assembly and function check. Install all the components in reverse order, starting with the connection of the plumes to the motherboard, make sure that all the connectors are latched to a characteristic click. The plastic slat has to be screwed with all the screws, because it provides tight contact connectors. Before you glue the back cover, turn the phone on and check the taver again, then you have to check the s to the back of the slab, then you will have to the slab, if you put the main s, then you will slab, you will s the slab, you will s the main slab, then s the camera to the slab, you will slab, you will smap it s, you will s, you will smote the new slab, you slab, you s, you will s, you s, you For better fixation, you can use rubber bands, pulling them on the phone 15-20 After drying the glue, wipe the case from the residues of adgΞΎΩva. π± Check the fingerprint sensor (if it is not built into the button). π Test the volume in the headphones and through the main speaker. πΆ Make sure the phone sees. SIM-map. π Check if the charge is going on and if the correct percentage is displayed. What if the phone doesn't turn on after assembly? First of all, check the battery plume connection. Often it's just not fully inserted into the connector. Also make sure the battery is not deep discharged. If the plumes are connected correctly, it's possible that one of the connectors on the board was damaged when you assembled. Do you have to change the adhesive every time you disassemble? Yes, the old adhesive loses its properties. For the screen and back cover, it is better to use a specialized glue B-7000, which remains elastic after drying, which will facilitate future repairs. Can I heat the battery with a hairdryer? It is categorically not recommended to direct a jet of hot air directly to the battery area. You only need to heat the glass or metal frame around the perimeter, controlling the temperature. Why does the sensor not work after changing the screen? Possible reasons: the defect of the module itself, poor contact of the plume, lack of grounding (if you forget to screw the metal bar), or damage to the coil, if you have to mount the bubble, you will probably have to s it carefully mount it under the bubble and then you will have to squel the bubble, if you will have it after you will have to size it, then you will s it to squeezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezezez