How to Open Xiaomi Phone Cover: A Complete Disassembly Guide

Xiaomi’s modern smartphones have evolved from easily-removable panels to complex monolithic designs. If you’re wondering how to open the lid of a Xiaomi phone, it’s important to immediately determine the type of body your gadget has. Older Redmi models or budget lineups before 2016 often featured removable panels that snap onto plastic fixtures. However, current flagships and mid-budget models like the latest generation Redmi Note and Mi series use all-glass or plastic panels glued to a special sealant.

Incorrectly determining the type of attachment can lead to breakage of the body or damage to the internal components. The adhesive base requires preheating and the use of thin tools to dissect the adhesive layer. If you try to simply remove the back of the device without preparing it thermally, you are at risk of breaking the glass or damaging the plumes connecting the cover to the motherboard (for example, the plume of a fingerprint scanner or flash).

In this guide, we will look at both scenarios in detail: safe removal of the removable panel and a professional approach to disassembling the adhesive case. You will learn what tools are needed for the job, how to properly heat the phone and what precautions should be followed. 85-90 Celsius degrees can irreversibly damage OLED-So, accurate temperature control is a critical step that should not be ignored under any circumstances.

Preparation of the workplace and necessary tools

Before you start to physically affect the smartphone, you need to organize a safe space. Working with small electronics requires good lighting and no statics. The ideal option would be to use an antistatic mat, but at home you will do a clean wooden or plastic surface. Metal tables without coatings are better covered with cloth to avoid accidental short circuit or scratches.

The toolkit depends on the complexity of the task, but the basic kit should be in everyone who plans to repair. To work with adhesive housings, you must have a heat source. This can be a professional heating pad, hair dryer (building or powerful household), or even an electric tile closed with a metal sheet. It is important to ensure uniform heating of the perimeter of the device.

• 🛠️ Screwdriver kit: cross (PH000, PH00) Torx (T2, T3, T4, T5) screw-hole.
• 🎴 Plastic blades and mediators: necessary for snapping plumes and dissecting glue without damaging plastic.
• 🌡️ Thermophen or heating pad: to soften glue B-7000 or T-7000, factory-operated.
• 🧲 Magnetic mat or organizer: to avoid losing microscopic screws of different sizes.
• 🧴 Solvent (isopropyl alcohol): helps soften glue residues and degrease surfaces.

Special attention should be paid to the suction cup. It is the main tool for creating an initial gap between the screen and the body or between the frame and the back cover. A quality suction cup should fit tightly to a smooth surface and have a reliable grip ring. If the suction cup slips, you risk dropping the phone or smashing the glass against a hard table.

⚠️ Warning: Never use metal blades, knife knives or scalpels to pick through the crevices of the case.The metal easily slips, cuts through the plumes, punches the battery or scratches the internal partitions.Only plastic or specialized thin metal with insulation.

Determining the type of design of your Xiaomi

Before you pick up the tools, you need to clearly understand what design you are dealing with. An error in identifying the type of cover will lead to unnecessary action or damage to the device. Conventionally, all Xiaomi, Redmi and Poco smartphones can be divided into three categories according to the way the rear panel is attached.

The first is the classic removable lids, which are typical of older models (e.g. Redmi 1S, 2, 3) and some ultra-budget devices of later years, which are held exclusively on plastic latches around the perimeter, and can be determined by the presence of a visible notch (wells) in the lower corner of the rear of the body or by the fact that the side faces do not have a visible glue layer when viewed through a magnifier.

The second and third types are monoblocks. Here, the lid can be glass or plastic, but it's always glued. The only difference is whether the glass is part of the frame structure or glued directly to the metal/plastic frame. Modern models like the Xiaomi Mi 11 or Redmi Note 10 Pro use double-sided tape or liquid glue, which requires heating to 80-100 degrees to soften.

For an accurate diagnosis, you can use the table below, which gives examples of models and their attachment types. If your model is not listed, look for YouTube reviews tagged "teardown" or "disassembly".

Instructions: How to remove the removable cover (old models)

If you own a removable battery, the process of dismantling takes no more than a minute, but there are some nuances that can cause plastic fixtures to break, and plastic becomes brittle over time, especially if the phone is often overheated or in the cold.

Find a notch to open. It's usually in the lower left or right corner of the back. Sometimes, in very old models, the lid needs to be moved down, so the notch can be hidden or indicated by an arrow. Put your thumbnail or a thin plastic mediator into this notch. Don't use metal objects to avoid damaging the decorative coating.

With a moderate force, pull the panel upwards and slightly away from the center of the phone. You should hear the characteristic click of the snapped latch. Next, as you move around the perimeter, gently click the remaining locks. Movements should be smooth, without jerks. If the lid does not lend itself, do not use force - check if there are screws under stickers or warranty seals (although this is rare for removable covers).

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If the lid is removed tightly, try to warm it up slightly with a hair dryer for 20-30 seconds, the plastic will become more elastic, and the risk of white cracks on the folds will decrease.

After removing the cover, you will get access to the slots SIM-This is the perfect time to replace the battery or clean the dynamic system of dust. When you install the lid back, first lock the top (near the camera), and then press the bottom until the characteristic click.

Technology of safe disassembly of adhesive housings

For most modern users, the question is how to open the lid of a Xiaomi phone that is glued, a process that requires patience and strict adherence to temperature. The main task is to soften the adhesive layer, but not overheat the internal components. The glue used by Xiaomi (often the equivalent of the B-7000), becomes plastic at a temperature of about 80 ° C.

Start by turning off the device. It's a safety requirement. Put the phone on a flat surface with the screen down. If you use a heating pad, set the temperature to 80-90°C and put the phone on top of it with the back cover down. If you use a hair dryer, keep it 3-5 cm away from the body, constantly moving the air flow around the perimeter so that the warming is uniform. Don't heat one dot for longer than 5-10 seconds.

The heating process usually takes 2 to 5 minutes depending on the thickness of the glass and the power of the heat source. Periodically check the temperature with your hand (caution!) or thermometer. The body should become hot but not scalding. Once warmed up quickly but gently insert the suction cup into the bottom of the back cover (where there is no camera) and pull up, creating a microscopic gap.

• 🔥 Heat control: Do not exceed 100°C, otherwise the glue may boil or the glass may burst from a thermal shock.
• 🧵 Use of fishing line: if a gap is formed, put a thin line or a special string into it for opening.
• ✂️ Movement: Move the fishing line from side to side (sawing movements), gradually moving along the perimeter.
• 🧪 Chemistry: in a complex gap, you can drop a drop of isopropyl alcohol for better sliding and dissolving the glue.

It is important to remember the plumes. In some Xiaomi models (such as the Mi Mix series or folding devices), the back cover can be connected to the plumes of scanners or antennas. If you feel resistance or see drag elements, stop. Perhaps unscrew the internal screws or turn off the plume through the screen (if the design allows).

⚠️ Warning: When working with adhesive cases, never try to fit the lid with a screwdriver without first heating and creating a gap with a suction cup.You are almost guaranteed to split the glass or damage the frame, making repeated sealing impossible.

Specifics of working with glass and plastic panels

The back cover material dictates the game. The glass used in Xiaomi’s flagships (Gorilla Glass Victus and its counterparts) is highly compressive, but highly sensitive to impact and spotting, and plastic is more flexible, but scratches more easily and can deform when overheated.

When working with glass, it is critical to avoid distortions. When you insert a mediator or a string, the angle of entry should be minimal. If you press the glass at a 90 degree angle, it will crack. Use thin metal blades with rounded edges only after the glue has already softened and there is free passage.

Plastic covers on budget models (like the Redmi Note 9 in the plastic version) can play. When heated, they become soft. If you push too hard with a suction cup, you can push the center of the lid inside, damaging the camera or battery. Work with plastic even more delicately than with glass, focusing on the edges.

Another important aspect is the oleophobic coating, where if you're frictioned with a mediator or string on the inside of the glass, you can damage the fabric or leave traces of glue that are difficult to remove, and you can steer the tool closer to the outer edge of the frame where the glue seam is.

Completion of work: cleaning and reverse assembly

Once you've successfully removed the lid, you'll have to prepare the surfaces for reassembly, and the residue of the old glue must be removed completely, using a plastic map, a soft cloth soaked in isopropyl alcohol, or special adhesive solvents. Use metal scrapers with extreme caution, only on metal frames.

Degreasing is a key step, and even if the frame is visually clean, it still has fat spots from the fingers that will worsen the adhesion of the new adhesive, wipe the perimeter of the frame and the inside of the lid with an alcohol wipe, and wait for the alcohol to dry completely before applying the new layer.

Use B-7000, T-7000 or special adhesive tapes cut into the shape of the body (preforms) to fix the adhesive. Apply a thin, uniform layer of glue on the frame. Don't overdo it: the excess can leak out or get onto the camera and speaker. Press the lid and lock the device with rubber rings or stationery gums for 1-2 hours before full polymerization.

• 🧹 Clean: Remove all villi and dust before gluing, or they will stay inside forever.
• 💧 Glue: Apply the glue with a continuous line, avoiding breaks in the corners where the body is most often unstuck.
• ⏱️ Time: Keep your phone under a press (rubber) for at least 60 minutes for a strong grip.
• 📸 Check: before the final gluing check the work of all modules (camera, vibration, sound).

⚠️ Warning: Do not turn on your phone immediately after gluing if you accidentally glue the internal components. Let the device lie off for several hours so that the glue vapors evaporate and the glue itself finally hardens.

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Cleaning the frame of old glue and degreasing it is 90 percent of the success of re-sealing, and you can't save time at this point.

Frequently Asked Questions (FAQ)