The process of disassembling the Xiaomi Redmi 4X smartphone (codenick santoni) requires accuracy and understanding the internal architecture of the device, which, despite the budget segment, has an all-metal body. Disassembly of the device is necessary not only to replace a broken display module, but also to install a new battery, clean the speaker or replace the charging connector. Owners often face the need to disassemble precisely because of battery wear, as over time its capacity drops, and the phone ceases to hold charge during the working day.
Before you start physically affecting the body, you need to prepare the workplace and make sure that you have a specialized tool. The Redmi 4X metal body involves using suction cups and mediators to neatly separate the back cover without damage. The wrong approach can lead to chipped paint, deformation of the frame or, worse, damage to the plumes connecting the components.
In this article, we will take a detailed look at the stages of disassembly, paying special attention to hidden screws and fragile plumes. Xiaomi uses the standard layout for its devices of this period, but there are nuances that you should know about in advance.
⚠️ Warning: Before any work begins, be sure to completely turn off the device. Attempting to turn off the plumes under voltage can lead to a short circuit and the motherboard fails.
Tools and workplace preparation required
You can't disassemble the right tool without the right tool. You'll need a set of precision screwdrivers to work with the Redmi 4X, specifically a PH#00 cross or PH#000. This is the size that's optimal for twisting screws that lock the metal frame and internal modules. Using an inappropriate screwdriver can lead to the screw caps licking together, which will make the assembly process much more complicated.
Also included is a plastic spatula (mediator) and a suction cup. Metal tools such as scalpels or knives are not recommended because they can damage antenna inserts or scratch the inside of the case. The battery, which is planted on glue in this model, may require a hair dryer or special heater to soften the adhesive.
Organize the space so that all the small details are on hand and not lost. The screws in Xiaomi smartphones can vary in length even within the same board, so sorting them is critical.
- 🔧 A set of screwdrivers with a magnetic tip (necessarily cross). PH#00).
- 📱 Plastic mediators and suction cup for opening the body.
- 🔥 Hair dryer or heat heater for heating the battery adhesive base.
- 🧲 Magnetic mat or organizer for sorting screws.
☑️ Preparation for the Redmi disassembly 4X
Removal of the back cover and access to the insides
The first stage of dismantling Xiaomi Redmi 4X And this is a rear cover removal, and unlike many modern smartphones with glass back panels, it uses aluminum, which makes it stronger, but it requires caution when you open it. SIM-cards and memory cards to free access to internal screws if hidden beneath, although in this model the tray usually does not overlap the screws.
Heat the perimeter of the device with a hair dryer for 1-2 minutes. This is necessary to soften the glue that holds the lid. Do not overheat the body so as not to damage the display on the back side. After heating, use the suction cup, attach it to the bottom of the back cover, and gently pull up, creating a gap.
Insert a plastic mediator into the gap and guide it along the perimeter, gradually snapping the plastic latches away. Move slowly, feeling resistance. Sharp movements can break the latches, and the lid will not hold tight.
Nuances of glue in Redmi 4X
Dismantling of metal frames and protection of boards
Once you remove the back cover, you'll see a metal frame, screwed with a lot of screws around the perimeter, which is the main structural element that provides stiffness. You'll need to unscrew all the visible screws. Note that some screws can be hidden under stickers or rubber plugs, although in Redmi 4X they are usually open.
Pay special attention to the screws at the bottom of the case, near the charging connector. The number of screws can vary, and even one screw can be passed when assembled, and after all the fasteners are unscrewed, the metal frame must be carefully separated, it can be held on latches or light glue.
Use a mediator to squeeze the frame off the plastic base. Be extremely careful at the top where the display and touchscreen plumes are located. The frame presses the connectors against the board, and sloppy movement can damage them.
| Fixing zone | Type of screw | Number (example) | Features |
|---|---|---|---|
| Perimeter of the frame | PH#00 (black) | 10-12 pcs. | Same length |
| Lower part (dynamics) | PH#00 (silver) | 2-4 pcs. | They may vary in length. |
| Fixing fees | PH#00 (black) | 2-3 pcs. | Hidden under metal plates |
Once the frame is removed, you can access the motherboard and the battery, and now you can see the basic electronics of the device, and at this point, it's important not to touch the open contacts with your fingers, so you don't leave any fat marks or static charge.
Disabling the plumes and retrieving the battery
The next critical step is to turn off the power and periphery. The first thing you need to do is turn off the battery plume. In the Redmi 4X, the battery connector is on the bottom of the motherboard or on the side, depending on the revision. Carefully tuck the connector in with a plastic blade or nail, without using metal tools.
Then disconnect the display and touchscreen plumes. They're usually at the top of the board and are covered by metal clipplates. Unscrew the screws that hold these plates, remove them, and then turn off the plumes. The plumes are very thin and easily torn, so pull them strictly by the connector, not by the cable itself.
Now you can start removing the battery. In this model, it's glued all over the area. To safely extract, use the hair dryer again, warming the back of the case (now a plastic base) in the battery area. Temperatures should not exceed 60-70 degrees.
- 🔋 Turn off the battery connector first thing to turn off power.
- 🖥️ Remove metal screens over display plumes.
- 🌡️ Warm up the battery area with a hairdryer to soften the glue.
- 🎣 Use plastic suction cups or special tapes to pull out the battery.
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To retrieve the swelling battery, do not puncture it or bend it. Place the phone in the refrigerator for 10-15 minutes, the cold will make the glue less elastic and the battery harder, making it easier to remove it without damage.
⚠️ Warning: If the battery is swelling, handle it very carefully. Damage to the shell of the swelling battery can cause fire. Remove it as carefully as possible without squeezing it.
Replacement of the display module and touch screen
If the purpose of disassembly is to replace the broken screen, then after removing the frame and disconnecting the plumes, the old module can be removed. In Xiaomi Redmi 4X display is often assembled with a frame, which makes it easier to replace. If you change only the glass or matrix separately, the process requires heating and separation of layers, which is difficult to do at home.
When installing the new module, make sure that the plumes are free of clamps. Connect the display and touchscreen plumes to the corresponding connectors on the motherboard before fixing with metal plates. It is important to check the performance of the touchscreen and images before final assembly of the case.
Turn on the phone without screwing, and check the sensor, the sound in the speaker and the vibrator. If everything is working correctly, you can start the final assembly. Remember to apply a new layer of glue or use double-sided tape to fix the display in the frame.
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Always check the performance of the new display and touch screen until the body is fully assembled, which will save time in the event of a defect or improper connection, eliminating re-disassembly.
Assembly of the device and check of performance
The smartphone is assembled in reverse order. Set the battery in place, making sure the connector matches the connector on the board. Press the battery to lock it onto the new adhesive layer (if you used a special adhesive B-7000 or analogue for the new battery).
Connect the display plumes, the touchscreen and the main plume (if it's detached). Set up metal clipplates and twist the screws. Don't pull the screws over, because the plastic they're screwing into can crack. It's enough to get a little effort to the point.
Set the metal frame of the case, making sure that all antenna contacts (spring contacts on the board, touching the frame) fall into place. Then fasten the frame with screws around the perimeter. Lastly, snap the back cover, starting at the top and moving to the bottom, until the characteristic click.
Once assembled, turn on the device and check the basic functions: charging, camera operation, Wi-Fi and cellular communication. No communication problems indicate that the antenna contacts of the frame are correctly installed.