How to remove the lid on the Xiaomi phone: a step-by-step guide

Many smartphone owners face the need to disassemble the device, whether it is replacing a broken back panel, installing a new battery or thoroughly cleaning the internal components from dust. In the case of Xiaomi devices, the process of dismantling the case has its own specific features, which is important to consider so as not to damage fragile plumes and glass. Modern models are most often equipped with glass or plastic panels planted on glue, which requires accuracy and the right tool.

Before you start taking action, you need to clearly understand the design of your gadget. While older models such as the Redmi Note 3 or Redmi 4X had removable plastic covers, modern flagships and budget series Redmi and Poco are assembled using unibody technology using adhesive compounds. Incorrect removal of the cover can lead to battery damage, battery puncture or rupture of plumes (finger scanner), which will make repairs much more expensive.

In this article, we will take a closer look at the process of removing the back panel for different design types, with a focus on safety measures and workplace preparation, which tools are really necessary and which can harm, and how to properly unstick the panel without leaving traces and chips. Remember that any interference with the design of the device removes the warranty, so weigh all the risks before starting work.

Tools and workplace preparation required

High-quality disassembly is impossible without specialized tools. Use of improvised tools such as knives, needles or kitchen screwdrivers is strongly discouraged, as they can damage the case or, worse, break the battery. To safely dismantle you will need a set of tools, which is often called a "smartphone repair kit".

The main heating tool is the thermophene, or at least a heating pad. The temperature must be strictly controlled so as not to overheat the display matrix on the back. To tweak the edges, plastic mediators or thin metal blades with rounded edges are used.

• 🔧 Precision screwdriver kit (cross-hatch) P2, P5) screw-hole.
• 🔥 Thermophen or industrial dryer with temperature control (optimally) 80-100°C).
• 🧩 Plastic mediators, shoulder blades and suction cup for opening the body.
• 🧴 Isopropyl alcohol or special solvent of glue (B-7000) remove adhesive residues.

The workplace should be well lit and free of unnecessary objects. It is recommended to use an antistatic mat or at least a clean, dry surface so that small screws do not get lost. SIM-card and memory card, if the design of the tray allows you to do this without complete disassembly.

Features of the design of different Xiaomi series

Understanding how your model is assembled is critical to your opening strategy. Xiaomi engineers use different approaches depending on the price segment and year of the device's release. Mistaking the type of attachment can cause plastic latches to break or glass to crack.

Budget models of the past often featured plastic latch covers. In such cases, heating was almost unnecessary, it was enough to find a technological gap and turn the mediator. Modern devices, including the Mi series, Xiaomi 11/12/13 and most Redmi Note, have glass or ceramic rear panels glued around the perimeter and sometimes in the center.

Special attention should be paid to models with wireless charging. In such devices, an additional metal plate or a layer of graphene is often placed under the back cover, and the battery itself can be glued to the inside of the panel. In some flagships, the fingerprint scanner is built directly into the glass of the cover, which requires maximum care when disconnecting the plume.

Step-by-step instructions: heating and opening the body

The most important step is to soften the adhesive layer, and if the model assumes the presence of glue (which is true for 90% of modern smartphones), you need to warm up the perimeter of the device evenly, and do not direct the flow of hot air to one point for longer than 2-3 seconds to avoid local overheating.

Use the thermophene, holding it at a distance of 3-5 cm from the surface. Move the hair dryer around the perimeter for 2-3 minutes. Surface temperature should become noticeably hot for the hand, but not melting plastic (about 80-90 degrees). After heating, try gently tampering the angle of the cover with a mediator or a sucker.

⚠️ Warning: If the lid fails after the first heat, do not use force. Repeat the heating procedure. Excessive force will lead to a crack of glass that will no longer be repaired.

When a small gap appears, insert a plastic card or mediator and, while making reciprocal movements, gradually move along the perimeter. Cut the glue in smooth movements, trying not to plunge the tool deeper than 2-3 mm, so as not to touch the internal components.

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If you don’t have a thermophen, you can use a powerful table lamp to direct light to the back, but it will take significantly longer (10-15 minutes).

Disabling plumes and removing the panel

Once the perimeter glue is cut, don't be in a hurry to remove the lid completely. Most modern Xiaomi models have a fingerprint scanner plume or flash LED attached to the inside of the back, and a sharp jerking motion is guaranteed to cause the contact to break.

Carefully raise the edge of the lid by 1-2 centimeters and visually examine the space between the lid and the frame. If you see a thin plume going from frame to lid, it must be turned off. Use a plastic shoulder blade or nail (if available) to snap the connector.

In some cases, such as the Redmi Note series, the plume can be quite long and allow you to put the lid next to each other. However, in compact flagships, the space is minimal, and turning off the battery in such models often becomes possible only after removing the additional protective plate, which, in turn, can be attached under the lid.

• 🔍 Carefully inspect the area around the main camera module - there are often hidden locks.
• ✋ Do not pull the plume itself, you need to pull only for a rigid connector (if the design allows) or snap it off.
• 🧹 Make sure there are no screws hidden under the lid under stickers (rarely, but found in protected batches).

Once you make sure that there are no connections left between the body and the cover, you can remove the panel completely, and then you can put it in a safe place with the outside up, so you don't scratch the glass or the glossy plastic.

Removal of glue residues and preparation for assembly

After the successful removal of the lid on the frame of the case and on the panel itself, there will be remnants of the old adhesive composition. To build and ensure moisture protection (if any), these residues must be removed. Using metal objects to scrape glue from the frame is dangerous - you can damage antenna contacts or paint.

The best solution is to use isopropyl alcohol. Apply a small amount of liquid on a napkin without a pile and thoroughly wipe the ends. The glue should soften and roll into lumps that are easily removed. For hard-to-reach corners, you can use a wooden toothpick.

If you plan to install the lid back on the new adhesive (which is strongly recommended instead of using double-sided tape), make sure the surface is perfectly fat-free.The adhesion of the new composition is directly dependent on the purity of the surface. Any fat spots or dust will impair the adhesion.

⚠️ Warning: Do not use acetone or aggressive solvents for plastic, as they can melt the frame or make the plastic cloudy.Isopropyl alcohol is safe for all body materials.

Frequent mistakes in disassembly and how to avoid them

Even experienced craftsmen sometimes make mistakes, let alone beginners. The most common problem is rushing. Trying to remove the lid from the cold or underheated side leads to chipping. Always take enough time to warm up, especially if the phone has a glass back.

The second mistake is to use tools that are too thick, so if you try to shove a thick mediator into a narrow gap, you can crush the side bezel or damage the display on the inside, use the thinnest blades in the kit to start the autopsy.

The third problem is the loss of screws or the confusion of their order. The screws in Xiaomi smartphones can be of different lengths and threads. Curling a long screw into a short hole can penetrate the motherboard right through.

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The main rule of repair: heat up seven times (check heating), taunt once. Patience when heating the glue saves the glass from cracking 90% of the time.

It's also common to forget to turn off the battery immediately after opening the case. Even if you only change the lid, accidentally closing the battery connector contacts with a metal tool can cause the power controller to fail. Always turn off the battery plume first, if the design allows it to be done early.

FAQ: Answers to Frequently Asked Questions