The metal body of the Xiaomi Redmi Note 3 Pro is not only a tribute to aesthetics and strength, but also a serious obstacle for those who are faced with the need for repairs for the first time. Unlike plastic counterparts, where it is enough to just tuck in the corner, it requires accuracy, patience and understanding of the design. Many users are scared at the sight of the all-metal back, believing that without professional equipment, access to the insides of the device is impossible.
The main difficulty is that the lid is held on a powerful adhesive layer around the perimeter, and also has many hidden screws under decorative plugs. Wrong actions can lead to deformation of the frame, damage to the plumes or even destruction of the glass of the main camera. Before starting work, it is important to realize that disassembling the case is an irreversible process in terms of warranty seals, so weigh all the risks.
In this article, we will discuss in detail how to safely open the back panel, what nuances should be considered when working with a metal case and how not to damage fragile components during dismantling.
Tools and workplace preparation required
Before you start the physical part of the work, you need to prepare a specialized toolkit. Common household items like knives or needles will not be enough, moreover, their use will ensure scratches and chips. You will need a set of precision screwdrivers, since the screws in the Xiaomi Redmi Note 3 Pro have different sizes of hats.
The critical element is the heat source, and the adhesive that holds the lid softens when heated, which makes opening much easier. Use a building hair dryer, or at least a powerful household hair dryer, but keep a watchful eye on the temperature so that the display matrix does not overheat on the back.
- 🔧 Set of screwdrivers (cross-crosses) PH000, PH00 and flat) for twisting screws of different calibers.
- 🔥 Building hair dryer or thermoplatform for uniform heating of the perimeter of the body.
- 🎴 Plastic mediators (scapula) and suction cup for careful detachment of the panel without scratches.
- 🧴 Isopropyl alcohol or special solvent of glue (B-7000) scavenging.
Organize the workspace so that small parts are not lost. The screws in modern smartphones are longer even within a single module, so they are better sorted immediately. It is also recommended to use a magnetic mat or a sheet of paper with markup, where you will put the fastener in the order of dismantling.
⚠️ Note: Do not use metal blades or scalpels to initially open the gap between the frame and the lid.The metal slides easily and can damage plumes located close to the edges of the case, which will cause buttons or antennas to fail.
Heating process and primary opening of the body
The first step is to warm up the perimeter of the device. Turn the dryer on at medium power and direct a jet of hot air along the ends of the smartphone. Move the device or hair dryer evenly, lingering on corners and long sides for about 30-40 seconds. The goal is to heat the adhesive layer to an elastic state, but not melt the plastic elements inside.
After heating, while the phone is still warm, place the suction cup at the bottom of the back, closer to the Mi logo, but not on the camera itself. Pull the suction cup up, creating tension, and in the resulting microscopic gap, carefully insert a plastic blade. If there is no gap, repeat the heating - do not use excessive force.
Move the blade along the perimeter, gradually cutting through the adhesive layer. The movements should be sliding, parallel to the plane of the screen. It is important to feel resistance: if the tool is tight, then the glue in this place is not warmed up, and you need to add heat. Pay special attention to the area around the camera module, because there are often "bridges" of glue.
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If you don't have a suction cup, you can use a thin line or a special string to open it, put it under the lower corner and saw the glue from side to side, pulling the ends.
Dismantling screws and disconnecting plumes
Once the lid is removed, you'll see the inside of the smartphone, and there are a lot of screws on the metal screen that covers the motherboard and the battery, and the number of screws can be confusing to the beginner, so you'll be methodical, and the first thing you'll see is the screws that are twisting the metal plate over the battery and the charging connector.
The next step is to turn off the plumes. This is the most critical point, because the connectors in the Xiaomi Redmi Note 3 Pro are fragile enough. Do not pull the wires themselves or the plume film. Use a plastic blade or nail to gently lift the connector up from the socket. First, the battery plume is turned off to turn off the device, then everyone else.
☑️ Procedure for disconnecting plumes
Once all communications are turned off, you can take a metal screen that covers the brains of your smartphone, and underneath it is a motherboard, and if your goal was to replace the battery, then at that point, access to it is already open, and if you need deeper repairs, carefully unscrew the screws that hold the board itself.
Table of fastening elements Redmi Note 3 Pro
To avoid confusion, it's helpful to know which screws are where they are, and they're not only long, but also the diameter of the thread, and if you put a long screw in a short hole, you can break through the tracks on the board or damage the body, which can have serious consequences.
| Location. | Type of screw | Number of | Features |
|---|---|---|---|
| Shell perimeter (under stubs) | PH00 (long) | 10 pcs. | Holding the basic structure |
| Metal plate (above the battery) | PH000 (short) | 4-6 pcs. | Thin carving, easy to rip. |
| Maternity board anchorage | PH00 (medium) | 3-4 pcs. | Fixing the frame fee |
| Camera module | PH000 (micro) | 1-2 pcs. | Very small, require care. |
Notice the screws hidden under the rubber plugs at the bottom of the smartphone, next to the Micro-USB charging port. They are often forgotten to unscrew when trying to remove the lid by force, which leads to the breakage of the plastic fixtures. Before any jerk, make sure that the entire perimeter is free of the fastener.
Nuances of work with antenna modules and buttons
The Xiaomi Redmi Note 3 Pro design involves using metal inserts at the top and bottom of the back cover to operate the antennas, which are connected to the board by contact pads or spring connectors, and if the lid is not neatly removed, these contacts can bend or come off, which will lead to a deterioration in signal reception.
And also, the volume and on button plume, which runs along the side of the button, is often glued to the body, and when you lift the lid, you have to make sure that the plume doesn't stretch or break, and if the lid is heavy, make sure you've forgotten to peel off some area around the perimeter.
What to do if the antenna contact is broken?
When you reverse assemble, make sure that all the antenna contact areas are tightly pressed, sometimes requiring a drop of glue on the insulating part of the antenna so that it doesn't shift when you vibrate, and the quality of the connection depends on that connection.
Battery replacement and final assembly
The battery in this model is glued to the frame quite firmly. To remove it, it is recommended to use a suction cup and a hair dryer. Heat the battery area (not exceeding 60-70 degrees), glue the suction cup and pull, while putting a plastic card under the battery. Avoid punctures of the battery body with sharp objects - this can cause fire.
After installing the new battery and checking the device's health (always turn on the phone for the test before the full assembly), you can proceed to the final stage: Clean the frames of the old glue with alcohol or solvent. Apply a new layer of glue B-7000 or use special adhesive tapes (pre-cut adhesive) for the Redmi Note 3 Pro.
Press the lid around the perimeter and fix the device with rubber bands on 15-20 You don't turn on your phone or load it during this period. 24 hours, but the primary fixation he gains quickly.
⚠️ Warning: Before you finish the case, be sure to check all the functions: microphone, speakers, vibration and sensor. If you forget to connect any plume, you will have to warm and open the case again, which risks damaging the new adhesive base.
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High-quality cleaning of the frame from old glue is a guarantee that the new cover will hold tight and will not go away after a month of operation.