How to disassemble Xiaomi Mi Note 2: step-by-step instructions for self-repair

Smartphone Xiaomi Mi Note 2 was a real flagship of its time, standing out curved OLED-But time is not spared electronics: broken glass, worn-out battery or a failed charging connector are typical problems faced by owners of even the most reliable devices. Self-disassembly of this gadget requires not only accuracy, but also understanding the specifics of its design, since it differs significantly from more modern models of the Mi or Redmi series.

Unlike many budget smartphones, where the body is held on screws, Xiaomi Mi Note 2 is built using a lot of glue, which makes the process of dismantling difficult and risky, especially if you do not have experience with such technology, the main difficulty lies in a curved display that is glued around the perimeter, and the rear glass panel, which is almost impossible to remove without professional equipment.

Before you start, you need to soberly assess your strength and the availability of tools. Damage to the plume of the fingerprint scanner or rupture of the display plume when sloppy bend is the most common cause of permanent failure of the device in self-repair. If your goal is simply to replace the battery, prepare yourself to remove the screen, which always carries the risk of damage. In this article, we will discuss each step in detail to minimize the risks.

Tools and workplace preparation required

Quality training is half the success. To disassemble the Mi Note 2, you'll need a specific toolkit that's different from the standard screw kit. Lack of the right inventory can lead to you simply not being able to open the case or damaging its elements in the process.

First of all, get a heating source. A normal hair dryer won't work because it won't heat the glue to the right temperature. Use a temperature-adjusted building hair dryer or a special heating pad for phones. It's also critical to have a suction cup and mediators (plastic blades) to gently open the perimeter of the device.

Here is a complete list of what to put on your desk before you start:

• 🔥 Building hair dryer or thermophene with temperature adjustment.
• 📱 Screen suction cup and a set of plastic mediators.
• 🔧 Set of screwdrivers (cross-haired) P2/P5 flat).
• 🧴 Isopropyl alcohol or special liquid B-7000 glue-softener.
• 🧲 Magnetic screw-sorting mat.

Don't forget to make a clean, well-lit workplace. Small screws can fly around the table and get lost in the carpet pile. Organize the space so that all tools are at hand and the phone is on a non-slip surface.

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Use a magnetic mat or a piece of paper with sectors drawn to spread the screws in the order in which you twist them, which will help avoid confusion when you build them.

Primary safety measures and retrieval SIM-map

Any manipulation of the insides of a smartphone should start with a complete power outage. In the case of the Xiaomi Mi Note 2, this is especially important, since the battery is not removable, and you can only turn it off after opening the case.

First, remove the tray for SIM-This will not only free up access to the insides, but also prevent accidental damage to the contacts under pressure on the body.

⚠️ Warning: Never try to heat your phone while it’s in the slot SIM-A card or memory card: Metal elements can heat up more than plastic and melt the tray or damage the contacts inside the slot.

After removing the tray, turn off the device completely. Make sure the screen is out and the phone is not responding to pressing. If the device has been turned on, wait for it to cool completely before heating to avoid getting burnt to your hands or overheating the internal components over measure.

Work in a room with good ventilation, and when heated glue and plastic elements can emit harmful fumes, although the number of these is small, long-term work in an enclosed space without ventilation is undesirable for the health of the master.

Dismantling of the rear glass panel

The most difficult part of dismantling Xiaomi Mi Note 2 is the removal of the rear window, which is glued around the perimeter with a powerful layer of glue, which eventually strengthens, and trying to tamper with a mediator without first warming up is guaranteed to lead to its destruction.

Turn on the hair dryer and set the temperature at about 80-100 degrees Celsius. Warm up the perimeter of the back cover evenly for 2-3 minutes. Don't hold the hair dryer at one point for too long, move it constantly so as not to overheat the display matrix on the back. The glass should get hot, but not melt.

Once warmed up, stick the suction cup at the bottom of the back cover, closer to the center, but not on the camera. Pull the suction cup upwards, creating a vacuum, while gently injecting a thin metal or plastic tool into the resulting gap. Move around the perimeter, gradually cutting the adhesive layer.

When the perimeter glue is passed, don't rush to pull the lid off abruptly, and there may be plumes underneath, although in the Mi Note 2, the back cover doesn't usually have direct connections, but it's better to be safe and bend it slowly, checking for connections.

Once the lid is removed, clean the glue from the frame of the case, which can be done with a plastic card or a special liquid, and the surface must be perfectly clean and defatted before being reassembled, otherwise the new lid or battery will lie loose.

Removing the battery and protecting internal components

Once you have access to the interior space, you will see a metal screen covering the main board and battery. In the Xiaomi Mi Note 2, the battery takes up a significant part of the volume and is also planted on glue.

The first thing you need to do is to disconnect the battery plume from the motherboard, and to do that, you need to carefully unscrew the metal connector protection, which is usually mounted with multiple screws of different sizes, and remember or photograph the location of the screws, because they can vary in length.

Use a plastic blade to turn off the battery connector. Never use metal tools for this operation, as there is a high risk of short circuit of the contacts on the board.

To extract the battery itself, you also need to heat it up. The glue under the battery is very viscous. Warm up the battery area through the back wall (if you haven't removed it completely) or directly if access is open. Use the suction cup to pull the battery upwards, helping yourself with a plastic card.

If the battery is swollen, be very careful. A puncture of the bloated battery can cause ignition, in which case do not heat it too much and try to remove it as carefully as possible without squeezing the side edges.

Replacement of the display and touch screen

Replacing the display in the Xiaomi Mi Note 2 is a high-severity operation due to the curved edges of the screen (2.5D/3D glass).The display here is glued to the frame around the perimeter, and its removal requires jewelry accuracy.

The process starts by removing all the screws that attach the display frame to the body, and there may be many of them, and they can be hidden under the stickers, and after you unscrew all the screws, you need to apply heat around the perimeter of the screen again.

Use a thin string or a line to cut the glue under the screen. The movements must be smooth, without jerking. The string allows you to pass along the entire perimeter, minimizing pressure on the glass, unlike mediators, which can break it.

Once the glass is separated from the body, bend the display plume, it's connected to the bottom of the motherboard, turn it off by removing the metal plate, plug the new display in and check the image and touchscreen before the final sticking.

Assembly of the device and verification of functionality

The Xiaomi Mi Note 2 is assembled in reverse order, but with new adhesives. You can't use old adhesives because they've lost their properties. Use B-7000 glue or special adhesive frames to fix the back cover and display.

Apply a thin layer of glue to the low-fat frame of the case. Let it dry a little (1-2 minutes) so that it becomes tractive. Carefully install the components in place, starting from the display, plug all the plumes in and check the phone without sticking the lid permanently.

If everything works -- the screen is shining, the touchscreen is responding, the cameras are switching -- you can stick the back cover, press it hard around the perimeter, lock it with gums for 1-2 hours until the glue is completely dry, and don't turn the phone on in charge in the first hours after assembly.

⚠️ Warning: Excess glue from under the screen or lid should be removed immediately before it freezes. B-7000 turns into a rubber-like mass that is difficult to remove without damaging the coating of the body.

After final assembly, perform a full functional test: check the proximity sensors, vibration, microphone and speaker. Make sure that the case is free of backlashes and creaks, which indicates the correct installation of all screws.

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The build quality directly affects the waterproofness and durability of the smartphone. Don't skimp on glue and pay attention to the cleanliness of the surfaces before gluing.

Frequently Asked Questions (FAQ)