How to remove the cover Xiaomi Redmi 6: full instructions for disassembly

Xiaomi’s mobile devices, particularly the Redmi budget lineup, are famous for their robust body and affordability, but even the most reliable equipment requires maintenance. Owners of the Redmi 6 often face the need to replace the battery, clean the speaker or repair the connectors, which inevitably raises the question of how to carefully remove the back cover. Unlike modern flagships with sealed cases, this model is structurally more friendly to home repair, but still requires strict adherence to the sequence of actions.

The process of opening the device is not trivial, because the plastic panel is attached to a two-part glue that hardens over time. Incorrect application of force can lead to cracks on the decorative surface or damage to the plumes of internal components. That is why before work begins, not only you need to prepare the tools, but also clearly understand the physical structure of the connection of elements in this particular modification of the smartphone.

In this article, we will look at all the stages of dismantling, paying special attention to hidden screws and thin plumes, which are most often victims of inexperienced craftsmen. You will learn how to safely bend the frame, how to dissolve the adhesive compound and what nuances the fingerprint scanner integrated into the back panel has. Proper preparation is the key to successful repairs without unnecessary costs for the purchase of new parts.

Tools and workplace preparation required

The quality disassembly of any electronic gadget begins long before you pick up the first tool. For the Xiaomi Redmi 6, you will need a minimal but specific kit that will ensure safety for both the device and your hands. The main tool will be a suction cup that allows you to create a vacuum clutch with a smooth plastic surface of the lid, and a thin plastic shoulder-scapula mediator for neatly dissection of the glue.

In addition to mechanical tools, it is critical to prepare a heat source. The adhesive composition that fixes the lid softens at a temperature of about 80-90 degrees Celsius. The use of a household hair dryer may not be effective enough, so experts recommend using a thermophen or at least a high-quality heating pad that can evenly warm the perimeter of the body for 3-5 minutes.

• 🛠️ Set of screwdrivers: mandatory presence of a cross screwdriver PH00 or PH000 screw-up.
• 🔥 Heat source: Thermophene, electric tile or powerful hair dryer to soften glue around the perimeter.
• 🧲 Magnetic mat or container: for sorting screws, as they may differ in length and threading.
• 🧴 Isopropyl alcohol or special solvent of glue (B-7000): for final cleaning of the frames from the residues of the adhesive.

The organization of the workspace is as important as the tools themselves. Light should fall evenly, without glare, so that you can see the smallest details and colors of the plumes. Many craftsmen make the mistake of working in dim lights, which leads to accidental damage to the contacts. Also make sure that there is a soft fabric or silicone mat on which the smartphone will be placed to avoid scratching the screen during operation.

Analysis of the design and anchorage points of the shell

Before we start heating, we need to be clear about what we're dealing with. Redmi 6 has a classic sandwich design, where the plastic back is glued directly to the middle frame, which in turn is the carrier element. Inside, under the decorative plastic panel, there is another metal or plastic plate covering the main board and the battery.

The main feature of this model is that it's not part of the main board, but it's connected through a separate, rather thin plume that runs from the lid to the motherboard, which means that you can't completely remove the lid in one motion, as in some older phones with removable batteries, because you risk tearing off the scanner plume if you don't turn it off first.

⚠️ Warning: Never try to pull the lid upwards, there's a limited length print scanner plume inside, and a sharp jerk is guaranteed to cause contact breaks and biometric protections to fail.

The adhesive layer can be thicker in the top and bottom of the smartphone than on the side faces. Also consider the presence of screws that can be hidden under decorative plugs, although Redmi 6 has no main visible screws on the outer cover - all fasteners are inside, under the second layer of protection.

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Before starting work, take a photo of the smartphone turned off and record it. IMEI-In rare cases, when you reset your settings or solder the board, this information may be needed to restore the software part.

Step-by-step: heating and uncoupling of the panel

We're going to start the immediate dismantling process. The first step is to turn the device off and remove the tray. SIM-Not only will it power the system down, preventing short circuits, but it will also reduce the internal stress in the housing structure. Then we turn on the heating element. If you use a thermophen, keep it at a distance. 3-4 cm from the back cover, constantly moving the flow of hot air around the perimeter.

The heating process should last about 3-5 minutes. The plastic should not begin to melt or deform, it should only become warm to the touch (about 60-70 degrees). If you touch the body with your hand and tolerate the temperature with difficulty, but not painful, then you warm up enough. The glue should by this time go from solid to viscous, which will allow the blade to more easily penetrate the adhesive layer.

Once warmed up, we take the suction cup, we put it in the bottom third of the back cover (closer to the Redmi logo, but not at the very edge) and we compress it very tightly, creating a vacuum. Pull the suction cup up, creating a microscopic gap between the lid and the frame. In the same gap, carefully, without fanaticism, we insert a thin plastic blade or a mediator.

• 📏 Move the shoulder blade along the perimeter: start with the bottom edge, then smoothly move to the sides.
• ✂️ Use the "cutting" technique: keep the blade parallel to the plane of the smartphone, cutting off a layer of glue, rather than putting the lid up.
• 🔄 Repeat heating: if you feel that the glue hardens again and the shoulder blade is tight, stop pulling and warm up the problem area again.

Be very careful in the top of your smartphone, where the camera and flash are, where the plastic can be thinner, and the risk of damaging the optics or plumes is higher, and when you walk around the perimeter and the lid starts to walk freely, don't remove it completely. First, you need to turn off the internal components.

Disabling the plumes and the final removal of the cover

Now that the lid is peeled off around the perimeter but still held on the plume, the most critical moment comes: gently lift the bottom of the lid to the permissible height (about 1-2 cm) to access the bottom of the motherboard. You need to find the connector of the plume of the fingerprint scanner.

In Xiaomi Redmi 6, this connector is usually located in the bottom third of the board, closer to the charging connector. It is a small flat connector, often covered with metal shielding plate or simply tightly pressed. To turn off, use a plastic blade or nail (if convenient) to gently lift the lock or pull the plume out of the connector. Metal tools here are better not to use, so as not to close the contacts on the board.

Once the plume is turned off, the back cover is completely free, and you can take it off and put it away in a safe place, and you can access the metal screen that covers the main board. Further disassembly (e.g. battery replacement) requires the unscrewing of all the visible screws on this metal plate, and the number of screws varies, but they're usually around the corner. 10-12 perimeter and center.

⚠️ Attention: When removing the metal screen of the main board, pay attention to the plume coming from the volume and on buttons. It can be glued to the inside of the screen. Don't pull the screen sharply up, check the paths of the plumes.

To replace the battery, which in this model is also glued to the body (albeit weaker than the lid), you will need to apply the heating again, but already directed at the battery area, you need to poke the battery with a plastic card, trying not to puncture the body, as damage to the lithium polymer cell can lead to fire.

Table of technical characteristics and compatibility

When you're doing repairs, it's important to understand what components you're working with. The Redmi 6 came in several versions, and although the body is identical, the internal filling may vary. Below is a table that helps you identify the main nodes.

Battery model identification BN46 The use of non-original or cheap analogues can lead to the fact that the smartphone will not see charging or will quickly discharge. QR-check-in.

And it's also worth noting that the metal screen that covers the board not only serves as a protective function, but also as a cooling system, and when you fit tightly into the processor and other heating elements through the heat pads, it removes heat. When you build it back, make sure that all the heat pads are in their places.

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The main secret of successful dismantling of Redmi 6 is not to rush to tear off the lid. Careful warming up and work with a blade around the perimeter takes 90% of the time, but guarantees the integrity of the plastic.

Device assembly and elimination

The assembly process is reversed, but it has its own critical moments: Before you install the back cover, you have to completely remove the old adhesive layer from the frame of the smartphone and the lid itself. Use isopropyl alcohol and a plastic card to do this. The surface must be perfectly clean and fat-free, otherwise the new adhesive will not fall evenly.

Apply a thin layer of special adhesive (such as the B-7000 or T-7000) to the frame. Do not apply the adhesive too close to the edges so that when pressed, it does not leak out and stain the glossy plastic. Let the glue dry a little (2-3 minutes), then gently connect the scanner plume to the socket on the board.

Make sure the plume is connected and lying flat, without overbending, combine the lid with the body. Start pressing it on the top, then smoothly walk around the perimeter, pressing your fingers. After that, it is recommended to fix the smartphone with rubber harnesses or put under the press (heavy book) for 1-2 hours for primary polymerization of the glue.

• 🧹 Cleaning: Before assembly, blow the insides with a pear to remove dust that got into during repairs.
• 🔌 Check: Before twisting all the screws of the metal screen, turn on the phone and check the touchscreen, speakers and scanner.
• 🔩 Screw screws: Twirl the screws cross-cross to ensure uniform fit of the metal plate.

If the phone doesn't turn on or the scanner doesn't work after assembly, don't panic. The plume connector probably didn't press well. You'll have to carefully repeat the lid removal procedure and reconnect the module. A common mistake is to skew the plume, which causes the contacts to mismatch.