How to disassemble Xiaomi Redmi Note 8: detailed instructions

Xiaomi Redmi Note 8 smartphones have proven to be reliable devices with excellent value for money. However, like any electronics, they are subject to mechanical damage. A broken screen, a failed battery or a damaged charging connector are typical problems that require intervention in hardware. Self-disassembly can save a significant amount of money if you approach the process responsibly.

In this article, we will take a closer look at the process of dismantling the Redmi Note 8, highlighting the nuances that beginners often miss. You will learn about the necessary tools, precautions and the right sequence of actions. It is important to understand that any interference with the device carries risks, so accuracy of movements and adherence to technology are critical to a successful outcome.

Before you start, make sure you work in a well-lit room with a flat surface, and the lack of rush and the availability of quality tools is the key to ensuring that your gadget will work again as new, and we will take all the steps from removing the back cover to turning off the main modules.

Tools and workplace preparation required

A high-quality disassembly of a smartphone is impossible without a specialized set of tools. Using improvised tools such as knives or pins can lead to irreparable damage to the case or board. To work with the Redmi Note 8, you will need a minimal but effective kit that will ensure the safety of components.

Pay special attention to the organization of the workspace. Small screws are easy to lose, and static electricity can disable sensitive electronics. It is recommended to use an antistatic mat or just a clean, dry surface of the table. Remember to skim your hands or put on gloves so that you do not leave traces on the internal components.

Below is a list of tools that will be needed to successfully complete the work:

• 🔧 A set of Phillips screwdrivers (cross) sizes #00 and #000 for twisting the screws of the case.
• 🔥 A hair dryer or thermophene to soften the glue under the back cover (temperature around 80-100°C).
• 🎴 Plastic mediators or suckers for neat opening of the body without scratches.
• 🧲 Magnetic mat or organizer for sorting screws of different sizes.
• 🧤 Antistatic gloves to protect the board from static electricity.

⚠️ Note: Using a metal blade instead of a plastic mediator when opening the case can damage the gates or shorten the battery contacts.

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Use a suction cup in combination with a hair dryer: heat the edges, glue the suction cup, slightly pull and insert the mediator into the resulting gap.

Rear cover removal and access to the insides

The first and most important step is to remove the back glass panel. In the Redmi Note 8, it is attached to a two-part glue that requires preheating. Without proper heating, the glass can crack even with minor mechanical impact. Heat the perimeter of the device evenly, avoiding prolonged exposure to the center where the camera is located.

Once heated, you need to carefully insert a thin plastic tool into the junction between the frame and the glass. Move around the perimeter, gradually cutting through the adhesive layer. Don't try to remove the lid with a jerk, this is guaranteed to destroy it. Act slowly, feeling the resistance of the glue.

Key points when removing the cover:

• 🌡️ The heat must continue. 2-3 minutes until the body is warm to the touch.
• 🔪 Enter the mediator at an angle of no more than 15 degrees to the plane of the screen.
• 🚫 Avoid areas near the main camera module, where the glue may be thicker.

When the lid is removed, you will have access to the main board and battery, and immediately notice the decorative plastic lining that covers the top of the body, which is also attached to the glue and requires careful flexion.

Disabling the plumes and removing the protective plate

Once the decorative pad is removed, you can see a metal plate that protects the connectors of the plumes, and it's screwed with several screws of different sizes. It's important to remember the location of each screw, because their length may vary, and putting a long screw into a short hole can break through the board.

The first thing you need to do is turn off the battery, which is a safety requirement that prevents short circuits when working with other components, the battery connector is metal protected, requires a plastic blade to disconnect, and do not use metal tools in the immediate vicinity of the contacts.

Then the display and touchscreen plumes are turned off. They can be protected by additional locks. Carefully tuck the connector with a nail or a plastic tool. In the Xiaomi Redmi Note 8, the plumes are quite thin and sensitive to clamps, so avoid sudden movements.

⚠️ Warning: Never pull the plume behind the conductor itself. Always take on a hard connector or a special vernacular part.

Removal of the battery and replacement of elements

In the Redmi Note 8, the battery occupies a significant portion of the internal volume and is glued to the frame of the case. Removing it often requires reheating the back of the device to soften the adhesive base under the battery. The use of sharp objects to tamper with the battery is strictly prohibited, as this can lead to its ignition.

It's recommended that you use suction hoods or plastic cards dipped in isopropyl alcohol. Alcohol penetrates the glue layer and makes dismantling much easier. Work slowly, gradually separating the battery from the case throughout the area.

The main steps when working with the battery:

• 🔋 Heat the battery area with a hairdryer to 60-70°C.
• 💧 Carefully apply isopropyl alcohol around the perimeter of the battery.
• 🃏 Use a plastic card to separate the glue, moving it parallel to the plane of the body.

When installing a new battery, make sure that the contact area on the case is clean. If you plan to reuse the case, remove the residue of the old glue. The new battery must be fixed with double-sided tape or special glue B-7000.

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Safe disposal of an old battery is a must – do not throw it into a regular trash can because of its chemical content.

Replacement of the screen and touch screen module

The display module in Xiaomi Redmi Note 8 is a single unit with glass (OLED matrix). Replacing only glass at home is almost impossible and requires expensive equipment. So the entire module changes assembly. Before installing a new screen, be sure to check its performance by connecting the plumes without gluing.

The process of installing a new display requires cleanliness. Even the smallest speck of dust caught between the matrix and the glass will be noticeable when the screen is turned on. Wipe the interior surface of the new module and the frame of the body with an antistatic wipe before the final assembly.

When you connect a new screen, make sure the plumes are inserted before you click. Once connected, assemble the phone in reverse order, but don't stick the back cover on yet.

• 🖼️ Absence of broken pixels and stripes in the image.
• 👆 Touchscreen reaction throughout the area (you can use the test in the engineering menu).
• 🔊 Performance of speakers and microphone.
• 📸 Functionality of the cameras.

If all the tests are successful, you can start the final assembly, apply a new layer of glue around the perimeter of the body and press the back cover tightly, and you can use rubber harnesses for 15-20 minutes to better fix.

Assembly of the device and verification of functionality

The final step is to build the Redmi Note 8 in reverse order, put the metal plate over the connectors and twist all the screws. Make sure that no plume is pinched and lies exactly in its channels. Pay special attention to the antenna plume, which often goes from the bottom board to the top one - it must be securely snapped.

After you've twisted all the screws and connected the battery, don't rush to glue the back cover right away, turn on the phone and run a final diagnostic of all the functions, which will avoid re-disassembly if a defect is detected.

What to look for when assembling:

• 🔩 All screws should be twisted, but without excessive effort, so as not to break the thread.
• 🧹 Remove dust from internal components before closing.
• 🧪 Check the operation of the proximity and autobrightness sensor.

⚠️ Warning: If the phone doesn't turn on after assembly, don't panic. Check the battery plume and display connection - often the problem is in the incomplete connectors.

Frequently Asked Questions (FAQ)