Owners of budget and mid-budget smartphones often face the need to repair themselves when official service centers are not available or the cost of their services is too high. Xiaomi Redmi 6 Pro, released in 2018, is still popular due to its metal body and affordable price, but over time requires a replacement battery or screen. The process of dismantling the rear of this device has its own features that distinguish it from more modern models with plastic covers or glass panels on glue.
Before you start to act, you need to clearly understand that the metal body of the Redmi 6 Pro is structurally more difficult to disassemble than it seems at first glance. Unlike many plastic counterparts, it uses a combination of mechanical mounts and adhesive layer, which requires a certain skill and the right tool. Incorrect application of force can lead to deformation of the frame or damage to the plumes connecting the modules.
The challenge is that the manufacturer didn't have easy access to the internal components without special tools. You'd need not only physical accuracy, but also an understanding of how the locking screws are located under the decorative elements. Ignoring the sequence of actions often leads to the lid literally having to be picked off, risking scratching the ends or breaking plastic latches.
Tools and workplace preparation required
To successfully complete the dismantling procedure, it is essential to prepare all the necessary tools in advance. The absence of even one specialized item can turn a simple process into an excruciating torture for the smartphone body. The main tool will be a suction cup for glass or metal, which will create an initial gap between the lid and the frame.
You will also need the following items:
- 🔧 Set of screwdrivers with a cross-shaped sting (usually the size of the PH00 or PH000) screw-twisting.
- 🎸 Mediator or plastic spatula (opener) for snapping latches without damaging plastic.
- 🌡️ Hair dryer or heating platform for softening the adhesive layer around the perimeter.
- 🧲 Magnetic mat or container for sorting screws so as not to lose them in the process of work.
The glue used in the Redmi 6 Pro is strong enough to hold the lid tight without first heating up. However, it is important not to overdo it: excessive heating can damage the display or internal electronics. The optimal temperature of exposure is about 80-90 degrees Celsius for 2-3 minutes.
⚠️ Warning: Never use an open fire or industrial dryer at maximum power close to the body, as this is guaranteed to overheat and fail the screen matrix or bloat the battery.
Analysis of the design of the Redmi 6 Pro
Understanding the architecture of the device is the key to safe disassembly. Xiaomi Redmi 6 Pro is equipped with an all-metal body with embedded plastic inserts for antennas, making the design rigid but demanding to be accurate. The back cover here is a carrier element to which the main board and other components are attached through a screw system.
The attachment is done along two main circuits: the perimeter adhesive layer and the central group of screws hidden under decorative elements or a logo. In some modifications, the screws can be hidden under stickers that must be carefully removed or tampered with a needle. A metal frame encircles the device around the perimeter, and it is in the groove between the frame and the lid that the tool will need to be inserted.
Inside the case, there are plumes connecting the main board to the charging daughter board, as well as loops of volume and switch buttons, which are very sensitive to tension, and if you sloppyly open the lid, you're at high risk of breaking thin tracks or tearing connectors out of the sockets.
Step-by-step instructions: heating and creating a gap
The first step is removal. SIM-This is a mandatory procedure, because the presence of a tray can create additional stress in the structure or damage the recovery mechanism when the housing is deformed from heating.
Keep the perimeter of the back cover warm evenly, paying special attention to the corners and edges. Movements should be smooth, covering the entire area of contact between the cover and the frame. Do not hold the hair dryer for a long time at one point, so as not to localize overheating.
💡
Check the degree of heating by gently touching the surface with the back of your palm – the metal should become hot but bearable to touch (about 50-60 degrees to the touch).
Once the body is sufficiently warmed, place the suction cup in the bottom of the back cover, closer to the edge, press it tightly and pull it up, creating tension, at which point with the other hand or with the help of an assistant, you need to insert a thin plastic blade or mediator into the resulting microscopic gap.
If there's no gap, don't use excessive force. Add a little more heat. Once the tool has entered the gap, don't remove it immediately, but gently run along the side face, cutting the glue layer. Move slowly, trying to keep the blade parallel to the plane of the cover so that the internal components don't damage.
Dismounting of screws and removal of the lid
Once the perimeter adhesive layer has been overcome and the lid has begun to recede, don't rush to open it completely. Inside, there may be screws that lock the lid to the metal frame or directly to the board. In the Redmi 6 Pro, screws are often found under the decorative bar at the bottom or under the logo.
Carefully examine the inner surface of the lid, which is a little bit open, using a flashlight, and if you see the screw heads, you have to unscrew them to the end, and use a magnetic screwdriver to keep the mount from dropping inside the hull.
The main stages of the final withdrawal:
- 🔍 Visually make sure there are no hidden screws under stickers or in the indentations.
- 🔩 Carefully unscrew all detected screws, sorting them by length and installation site.
- 👐 Smoothly lift the lid, controlling the presence of connected plumes (in this model, the lid usually has no plumes, but be careful with the buttons).
- 💨 If the cover sits tightly, slightly warm up the problem areas again.
⚠️ Warning: It is strictly forbidden to pull the lid up unless you are 100% sure that all screws are twisted.A sharp jerk can break plastic guides or damage connectors.
Once the lid is removed, you will have access to the battery and the main board, and it is recommended to immediately disconnect the battery plume from the motherboard if you plan to disassemble or replace components, which will protect the device from short circuit.
☑️ Checklist before removing the cover
Typical errors and risk table
Even experienced craftsmen sometimes make mistakes that can cost a device life. The most common problem is trying to remove the lid without sufficient heating. The glue in Xiaomi is very viscous, and cold dismantling is almost guaranteed to deform the thin metal of the lid.
Another common mistake is using metal tools (knives, scalpels) to slid the lid, and the metal slips off easily and can pierce the battery, causing it to ignite, or cut the plume of the display that passes next to the frame.
Below is a table of the main risks and ways to prevent them:
| Type of error | Possible consequences | Prevention method |
|---|---|---|
| Insufficient heating | Cover deformation, cracks | Heat 3-5 minutes to 80°C |
| Use of a knife | Battery bloating, plume break | Use only plastics |
| Strong pressure on the centre | Screen matrix break-up | Only push the edges. |
| A sharp jerk | Broken latches of the shell | Act smoothly and slowly |
Also worth mentioning is the risk of static electricity: Before touching the internal components, especially the main board, it is advisable to touch the grounded metal object or use an antistatic bracelet.
What to do if the lid is not removed anyway?
Completion and assembly
After successfully removing the lid and carrying out the necessary repairs (replacing the battery, cleaning the speakers), the assembly stage begins. Before installing the lid back, you need to thoroughly clean the residues of the old glue from both the frame and the lid itself, you can use isopropyl alcohol and soft fabric.
To fix the lid, it is recommended to use a special glue for electronics, such as the B-7000 or T-7000. Apply the glue with a thin strip along the perimeter, avoiding hitting the camera, speaker and connectors. After applying, press the lid and lock the device with rubber bands for 1-2 hours until completely dry.
It is important to properly install the screws back.Highing the screws in the Redmi 6 Pro metal housing can cause the threads to break in the aluminum frame, making further disassembly impossible without drilling.Turn the screws until a moment of light resistance.
⚠️ Warning: Make sure all plumes (especially the main camera and display plume) are securely snapped in connectors before final assembly, otherwise the phone may not turn on or the camera may not work.
The final chord will be to check the performance of all systems: touchscreen, speakers, microphone, vibrator and cameras, only when you make sure that it is working, you can consider the repair completed.
💡
Quality cleaning of old glue residues is a key point for the new cover to sit smoothly and stay secure.