How to disassemble the Xiaomi Redmi phone: a full set of tools and techniques

Disassembling Xiaomi’s current smartphones and the Redmi sub-brand requires less physical strength than a specific set of tools and an understanding of the device’s design. The company’s engineers use a variety of methods to fix components, ranging from standard screws to high-strength adhesive frames. The wrong tool for initial opening can damage the body or, worse, tear the plumes connecting the main modules.

In this article, we will discuss in detail what exactly you need to do at each stage of dismantling to maintain the integrity of the gadget. You will learn about the types of screwdrivers required to work with screws of different standards, and about methods of safely heating the adhesive base of the display. Accuracy and proper preparation of the workplace are key factors for successful repairs.

Before you start physically impacting the body, you need to make sure that you have all the equipment you need. Not even one important blade or the wrong bit size can turn a simple battery replacement into a multi-hour battle with the consequences. We'll look at the professional and budget options that will allow you to get the job done well.

Basic set of screwdrivers and bits for Xiaomi

The basis of any repair of mobile equipment is a quality set of screwdrivers. Redmi and Xiaomi traditionally use two main types of screws: cross Pentalobe (although often still standard cross, but very small) and specific screws with an asterisk. For most models, such as the Redmi Note series or Xiaomi Mi, the accuracy of the sting size is critical.

Most often, you'll need a PH000 or PH00 bit. Using a screwdriver that's too large will slice the sides of the screw, and then it's very difficult to extract it. Some flagship models may have opening-proof screws that require a Torx-type bit marked T2 or T3.

It is important to use magnetized tip screwdrivers, but the strength of the magnet should not be excessive so as not to damage the sensitive components of electronics. Cheap soft metal sets deform quickly, so it is better to invest in an alloy steel tool for regular operation.

• 🔧 Bita PH000 — basic standard for shell screws and internal fasteners.
• 🔧 Bita T2/T3 (Torx – required for some Mi and Redmi K series models.
• 🔧 Long-knob screwdriver – provides better torque control.
• 🔧 Tweezers with antistatic coating - for extracting small screws from deep wells.

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Buy bit sets with color labeled dimensions - this will save time on finding the right tool in the process.

When working with internal metal screens, even smaller screws are often found, which may require a PH0000 bit, and ignoring this nuance and trying to unscrew them with a standard screwdriver is guaranteed to damage the threads in the plastic pillars of the case.

Tools for opening the body and working with glue

Modern Xiaomi devices are often built on adhesive basis, especially models with glass back covers. To disassemble such a phone, one set of screwdrivers is not enough. The first step is always to heat the perimeter of the device to soften the adhesive.

Thermophene or a special heating pad (separator) is ideal for heating; a normal household hair dryer may not give you enough temperature, especially in winter; the optimal heating temperature is about 80-90 degrees Celsius; it is also not necessary to overload the device on heating, so as not to damage the display matrix or battery.

⚠️ Warning: Never direct a jet of hot air directly into the battery area. Local overheating of a lithium polymer battery can cause it to swell or ignite.

After warming up, thin metal or plastic blades come into play; metal tools are stronger, but they are easier to damage the frame or tear the plume if you do not act carefully; plastic mediators are safer for the housing, but can break when working with heavily glued covers.

The final layer separation often involves a thin line or string, which allows you to walk around the perimeter of the device, cutting the adhesive layer without putting too much pressure on the screen, and the line is less traumatic to the internal components than the rigid blades.

• 🔥 Temperature-adjusted thermophene – professional heating standard.
• 🔥 Thin guitar string or line 0.2 mm - for cutting glue around the perimeter.
• 🔥 Plastic blades (mediators) – for initial frame cracking.
• 🔥 Metal blades - to work with metal plates and screens.

Working with display and plumes

The display module in Redmi smartphones is the most fragile and expensive component, and the greatest care must be taken when removing it, and even microscopic pressure at the wrong point can lead to black spots or cracks in the AMOLED or IPS matrix.

Plastic tools are used to turn off the plumes, often called “scapula” or “captans.” Metal tweezers are prohibited here, as one awkward movement can close contacts on the board or damage the connector itself. The plumes in Xiaomi phones are often very thin and prone to tears.

Special attention should be paid to the plume of the fingerprint scanner, if it is built into the on button or is on the back cover. These components often come with the case or screen and require careful handling. Before disconnecting any plume, you need to make sure that you understand the principle of operation of the latch of the connector.

If the display is glued to the frame, it often requires reheating to separate it, and the glue under the screen can be more aggressive than under the back cover, and it's useful to use a suction cup to create an initial gap, where the blade is then inserted.

Specifics of disassembly of models Redmi Note and Xiaomi Mi

Different smartphone lines have their own design features. For example, the Redmi Note series often features a plastic back cover that is removed relatively easily after twisting several screws. However, newer models such as the Redmi Note 10/11/12 Pro use a glass back panel on glue, which makes the process much more complicated.

The flagship Xiaomi Mi and Xiaomi 11/12/13 series models often have waterproofing and reinforced adhesive bezel around the perimeter. It is almost impossible to do without high-quality heating and a thin string. In addition, these models often feature a two-layer assembly of the main board, where one module is above the other.

With careless disassembly of the side frame, you can damage the tail of the side button, which will lead to the inoperability of the phone.

⚠️ Note: In models with a built-in screen fingerprint scanner, when replacing the display, it is necessary to reglue the optical lens (OCA) Or move the old module or the scanner will not work.

When disassembling phones with curved edges of the screen (2.5D or 3D glass), the risk of chipping increases many times, the pressure of the tool on the edge of such a screen should be minimal, it is better to spend more time warming up than trying to tear the screen by force.

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The main rule of dismantling Xiaomi: the stronger the glue, the more time it takes to heat, not more force to break away.

Organization of the workplace and storage of screws

Chaos on the table is the repairman's main enemy. The screws in Xiaomi phones can vary in length even within the same node. If you screw a long screw into the hole for a short one, you can punch through the motherboard, which will lead to fatal consequences for the device.

To organize, use magnetic mats or special organizers with cells. Each stage of disassembly should be accompanied by fixing the screws in a certain order. Some craftsmen use a sheet of paper on which they schematically draw the phone and paste the screws with tape in the appropriate places.

Good lighting and a magnifying glass (or microscope) are essential for the inspection of small parts. Dust and villi that fall under the display during assembly will be noticeable immediately after the lighting is turned on. The workplace must be protected from static electricity, especially in dry rooms.

• 📐 Magnetic mat - holds the screws and does not let them fly.
• 📐 Lupe with illumination - for inspection of small connectors and the condition of plumes.
• 📐 A glue container B-7000 — So the glue doesn't dry in the tube.
• 📐 Alcohol wipes - for degreasing surfaces before gluing.

Glue and final assembly of the device

After successful replacement or repair, the device must be reassembled, and a special glue, most commonly a B-7000 or T-7000, is used to fix the back cover or display, and these adhesives remain elastic after drying, allowing the phone to reopen if needed in the future.

You need to apply the glue in a thin, continuous line around the perimeter, and the glue that you have exposed to the outside is easily removed with a finger or a napkin until it freezes, and it's important not to overdo it, so that the glue doesn't get inside the case and damage the optics of the cameras or the speakers.

After applying the glue and joining the parts, it is recommended to lock the phone with rubber harnesses or special clips for 15-30 minutes, this will ensure uniform fit and reliable polymerization of the glue. Full strength of the connection is gained after 24 hours.

⚠️ Warning: Don't use superglue (cyanacrylate) to stick lids! it becomes brittle, can damage plastic when re-disassembled and releases fumes that settle on the cameras, causing them to fog.

The final step should always be to check all the functions of the phone: touchscreen, sound, vibration, cameras and communication modules, and only when you make sure that you are fully functional, you can consider the repair completed.