The question of how the Xiaomi Redmi Note 7 opens is often raised by owners who have to replace broken glass, battery or charging plume, a model known as the “King of the Public Service” that requires careful handling, especially when working with the rear panel. Unlike modern smartphones with glued covers, it uses a combination of glue and mechanical fixtures, making the disassembly process accessible to the home craftsman.
Before you start physical intervention, you need to understand that the tightness of the case will be violated. Factory assembly involves the use of a special glue-melting, which when heated softens, allowing you to remove the glass. However, after opening, you will not be able to return the factory moisture protection, so you should be careful when using the device in the future.
To perform the procedure, you will need a minimum set of tools that can be purchased at any electronics store. OLED-the matrix or deform the frame, so the control of the temperature of the heating element is critical at all stages of operation.
Tools and workplace preparation
You can't disassemble well without the right tools. You'll need not only a standard screwdriver, but also specialized suction cups, mediators and heating equipment. Using inappropriate items like knives or needles greatly increases the risk of damaging the display plumes or puncture the battery.
- 🔥 Dryer or separator for heating the back cover to 80-90 degrees Celsius.
- 💳 Thin plastic mediator or blade to open the perimeter of the body.
- 🔧 A set of Phillips screwdrivers (cross) sizes PH000 and PH00.
- 🧲 Magnetic mat for sorting screws, as their length may differ.
⚠️ Warning: Never start disassembling if the smartphone battery is more than 50% charged.Puncture of the battery when heated or bended can cause instant lithium ignition.
The workspace should be well lit and free of foreign objects. Small screws have the property of flying around the table, and the loss of even one of them can lead to the fact that the Redmi Note 7 can not be reassembled without backlashes.
Removal procedure for back cover
The most critical step determining how the Xiaomi Redmi Note 7 opens is the separation of the glass back from the metal frame.The factory glue holds the glass firmly, and mechanical force without preheating will lead to cracks.Heating is done uniformly throughout the perimeter, paying special attention to the corners where the glue layer is usually thicker.
Once the body is heated, you need to carefully insert the mediator into the gap between the glass and the frame. The movements should be sliding, parallel to the plane of the screen. The thin glass of the rear panel easily bursts under point pressure, so do not try to tamper with it deeply at once. Progress gradually along the perimeter, slightly lifting the edges, but not pulling them far from the body, so as not to damage the plume of the fingerprint scanner.
- 🌡️ Heat the perimeter during 2-3 For a few minutes, constantly checking the temperature with your hand.
- 🖐️ Use a suction cup to create an initial gap at the bottom of the smartphone.
- ✂️ Do not use sharp metal objects to pick up the glue inside.
Be especially careful in the upper part of the housing, where the antenna plume passes. If you feel resistance, do not pull the lid force, you better add a little more heat. Excessive force can break thin conductors, which will lead to loss of network signal or Wi-Fi.
Dismantling internal components and protection
When you successfully remove the back cover, you see the inside of the smartphone, and you see a massive metal plate that covers most of the electronics, and it's mounted with a lot of screws of different sizes and types that require careful twisting, and some screws can be hidden under stickers or plugs.
| Component | Type of attachment | Risk of damage | Tool. |
|---|---|---|---|
| Metal protection | Phillips screws | Carving failure | Screwdriver PH00 |
| Display plume | Connector latch | Contact break | Plastic spatula |
| Battery | Glue stripe | Puncture/Bloating | Plastic card |
| Charging charges | Screws + connector | Damage to the port | Tweezers |
The first thing you need to do is to disconnect the battery plume from the motherboard, which is a safety rule that prevents short circuits from accidentally touching other connectors with metal parts of the tools, and only after it is turned off can you continue to dismantle the protective plates and turn off other plumes.
☑️ Safe disassembly
When working with connectors, use only plastic tools. Metal tweezers can close contacts on the board, which is fatal for the power controller. Carefully lift the connector up without swaying it from side to side so as not to break the plastic base of the connector.
Replacement of the battery and work with glue
In the Redmi Note 7, the battery is mounted on a double-sided tape around the perimeter and sometimes has an additional adhesive strip in the center. Metal objects should not be used to remove the old battery. It is recommended to use special adhesive solvents or gently poke the battery with a plastic card, while slightly warming the back surface (if it is not already removed) or the inside of the frame.
⚠️ Warning: It is strictly forbidden to bend, puncture or heat the battery above 60 degrees, which can cause irreversible chemical reactions and ignition.
After the old battery is removed, the frame surface must be thoroughly cleaned of the residues of the old glue. This can be done using isopropyl alcohol and soft fabric. A clean surface will ensure a reliable fixation of the new battery. When installing a new battery, it is important not to confuse polarity, although the design of the Xiaomi connector usually does not allow it to be connected incorrectly.
- 🧹 Carefully degrease the seat before installing a new battery.
- 🔋 Check the voltage of the new battery with a multimeter before connecting.
- 🧪 Use a special glue B-7000 orthopedic.
The new battery should sit tightly in its nest. If it hangs around, it can damage the plumes when the smartphone falls. If there is no regular glue strip, use a quality analog, but do not overdo it with the amount of glue so that it does not squeeze out on the board.
Access to charging connector and dynamics
The bottom of the smartphone, where the USB Type-C connector and the main speaker are located, also requires careful disassembly. Often this is where dust and moisture accumulate, corrosion contacts. To get to this module, you need to remove the additional plastic plug and unscrew several screws that hold the charging board.
Why is the charging not working after disassembly?
When replacing the charging connector, it is important to properly stack the plume into the guide channels. Incorrect stowage can cause the back cover to not stand in place or to pass the plume, causing loss of contact. The charging connector in the Redmi Note 7 is often assembled with a bottom speaker, which makes it easier to replace, but requires care when connected.
Notice the state of the speaker grid. When disassembling, it is often clogged with dust that can be neatly cleaned with a soft brush. This will improve the volume and sound quality without having to change the part. After installing new components, check the microphone and speaker for final assembly.
Assembly and seal check
The assembly is done in reverse order, but with the new conditions in mind. Because the factory seal is broken, it is recommended that you apply a new layer of glue around the perimeter of the back cover. Use electronics sealant glue with a thin continuous strip. This will not return the factory IP standard, but will protect against dust and splash.
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Apply the glue to the frame of the case, not the glass, and let it dry a little (2-3 minutes) before the final adhesion of the cover for better adhesion.
Once you have the lid installed, lock your smartphone with rubber rings or a load for 1-2 hours before the glue is completely dry. Don't turn the device on immediately, let all the components settle down. Then plug in the charger and check the smartphone's response. If the screen catches fire and starts charging, the first step is successful.
The final test involves testing all the functions of the sensor, cameras, vibromotor and communication modules, and if everything is working correctly, it can be considered a task completed, but if there are problems with the signal, it is possible that the antenna contact was damaged or improperly connected during the assembly.
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Quality cleaning of contact sites and proper stacking of plumes is the key to successful assembly without unnecessary details and communication problems.