How to open the case of the Xiaomi phone: step-by-step instructions

Modern Xiaomi and Redmi smartphones are famous for their stylish design, but when the screen breaks or the battery bloats, owners often face the need to repair themselves. Disassembly of the device is the first and most critical step on which the success of the entire operation depends. Wrong actions at the very beginning can lead to damage to the plumes, cracks in the back panel or even to a battery fire.

In this article, we will discuss the process of opening the case, paying special attention to the specifics of the attachment of various series. It is important to understand that the design of the smartphone is constantly changing: if the old models were disassembled relatively easily, modern flagships require jewelry accuracy.

Don't underestimate the complexity of the process, especially if the device is warranty-free, but if you're determined to act on your own, be patient and have the right tools. Next, we'll look at all the nuances that will help you safely open the case and access the internal components.

Preparation of the workplace and tools

The success of the disassembly depends on the quality of preparation. You will need a smooth, well-lit surface, preferably without fluffy coatings, so that small screws do not get lost. The ideal solution is to use a magnetic mat or organizer for screws, since the fasteners in Xiaomi smartphones can be of different sizes and lengths.

The basic toolkit includes several mandatory items, and without them, climbing inside the device is strongly discouraged, since the risk of damaging fragile parts increases many times.

• 🔥 Hair dryer (construction or household) for softening glue.
• 🔥 Suction cup to lift the back panel or screen.
• 🔥 Plastic mediators and shoulder blades for separation of components.
• 🔥 Torx screwdrivers (T5, T6) cross-sized (PH000).

⚠️ Warning: Using metal tools (knives, scalpels) to tweak the screen or back cover is extremely dangerous! metal can damage the display plume or puncture the battery, which will lead to a short circuit.

Also, remember to turn off the device before you start work. Even if the phone is turned off, there may be residual current in the circuit, so the first action after removing the lid should always be to disconnect the battery connector from the motherboard.

Specifics of disassembly of different models Xiaomi

Xiaomi engineers use different build methods depending on the price segment and year of release of the device. Budget models such as the Redmi Note series or Redmi (digital series), often have a removable back cover that is held on the latches and a minimum amount of glue, in such cases, it is enough to gently fit the cover with a mediator at the bottom of the case.

The situation is radically different when it comes to the flagship lines Mi and Xiaomi (for example, series 11, 12, 13, 14), where the back panel is usually glass and glued around the perimeter with a powerful adhesive compound, heating the case in such models is mandatory, otherwise there is a risk of breaking the glass when trying to break away.

The curved screens are also adhesive, requiring a thin string or special blade to remove the display, and the mistakes are expensive because replacing a curved display is one of the most expensive procedures.

Step-by-step instructions: heating and opening the body

The opening process begins with a gentle heating of the device's perimeter. Turn on the hair dryer and evenly warm the edges of the back panel or screen during the course of the process. 2-3 The temperature should not exceed 80-90 degrees Celsius, so as not to damage OLED-matrix or not deform the plastic frame.

Once heated, apply the suction cup to the surface and pull up slightly to create a gap. Insert a plastic mediator into the gap. Move the tool along the perimeter, gradually cutting the adhesive layer. Don't rush or make sudden movements, trying to hold the tool parallel to the plane of the phone.

When the glue is passed around the perimeter, you can gently lift the lid. If you feel strong resistance, stop and reheat the problem area. Often the glue in the corners or in the area of the chamber is strongest. Patience is your main ally at this stage.

Disabling plumes and extracting components

Once the case is open, you'll see the interior of the smartphone, and the first thing you need to do is remove the decorative plastic bar that covers the main connectors, which is usually secured with a few screws and plastic latches. When you unscrew the screws, carefully tuck the bar with the mediator.

Now, the most important thing is to turn off the battery, find the battery connector on the motherboard, and gently snap it off with a plastic blade, and then safely turn off the plume of the display, touchscreen, cameras and other modules, and the sequence here is critical to prevent short circuits.

If you plan to fully remove the motherboard, you will have to dismantle other elements, such as the charging connector, which is often put on a separate board at the bottom of the case and connected by a flexible plume. Be careful when disconnecting antenna cables if they interfere with access.

Common mistakes and risks in the process of disassembly

One of the most common mistakes is ignoring the heat: Trying to pull the lid off "cold" is almost guaranteed to crack. Glass and plastic become brittle at low temperatures, and the pressure of the mediator or suction cup can be fatal to the appearance of the device.

The second common mistake is using excessive force to snap connectors. The connectors on the Xiaomi motherboard are tightly designed, but they're not designed to jerk. If the connector isn't snapped off by a slight movement of the blade, check if you forgot to twist the metal plate's locking screw on top.

⚠️ Warning: Never try to smack the battery with sharp objects! A puncture of a lithium polymer battery causes instant ignition and the release of toxic substances. Use special hoods or heat to extract the battery.

Also worth mentioning is the risk of losing small screws: In modern smartphones, the number can reach as high as 10-15 pieces, and they often vary in length. Wrapping a long screw into a short hole can lead to a motherboard failure and the phone will fail forever.

Assembly and performance check

The assembly is done in reverse order, but with one important feature: first, you need to check the performance of the device "on weight." Connect the display and battery plumes, then turn on the phone. If there is an image and the touchscreen reacts, you can start the final assembly.

Before you stick the back cover or screen, remove the residue of the old glue, use isopropyl alcohol and soft fabric, and the surface must be perfectly clean and fat-free, otherwise the new adhesive layer will not lie evenly and dust will enter the body.

💡

Use a special glue B-7000 or T-7000 to fix the body. Apply it with a thin strip, let dry for 1-2 minutes, then tightly press the parts and lock with rubber bands for 1-2 hours.

After applying the glue and fixing the lid, don't turn the phone on immediately. Let the adhesive compound gain strength within the recommended time (usually 1-2 hours). Early inclusion and heating of the components can disrupt the process of polymerization of the adhesive, and the lid will soon peel off again.

Frequently Asked Questions (FAQ)

💡

The main difficulty of dismantling Xiaomi is the abundance of glue and fragile plumes that require accuracy and preheating of the case.