How to open the cover Xiaomi Redmi 4: step-by-step instructions

Disassembling the Xiaomi Redmi 4 is a procedure that requires care and understanding of the device’s design. Many users are faced with the need to replace broken glass, battery or fix the charging connector, but do not know how to safely dismantle the rear panel. Unlike modern models with non-removable housings, in this device the lid is removed relatively simple, but has its own nuances of attachment.

The challenge is that the lid is not only held on the latches, but also on adhesives around the perimeter. Incorrect dismantling can cause cracks in the plastic panel or damage to the internal plumes. Before you start, it is important to make sure that you have the necessary tools and free space.

In this article, we will take a closer look at the opening process, focusing on the places where the locks break most often, how to warm up the glue than to snap the panel, and what to do if the lid sits too tight, and the technology will help to preserve the integrity of the gadget.

Tools and workplace preparation required

To successfully complete the task of disassembling Redmi 4, you will need a minimal but specific set of tools. Use of improvised tools such as knives or needles is strongly discouraged, as there is a high risk of damage to internal components or injury, it is better to prepare a professional or semi-professional tool in advance.

First of all, you'll need a suction cup to lift the edge of the lid and a mediator (plastic blade) to snap the latches. Metal tools can leave scratches on the frame or damage the screen if you slip off accidentally, and a dryer to soften the glue will also be useful.

• 🔧 Plastic mediator or shoulder blade for opening
• 🌀 Suction cup for lifting panel
• 🌡️ Fryer or thermophene (to heat glue)
• 🔩 Phillips screwdriver (cross) for screws

Organize your workplace so that nothing interferes with the process. Lights should fall evenly, without glare, so you can see the fine details well. Turn off your smartphone in advance, turning it off to avoid short circuits in accidental contact with the board.

Analysis of design and anchorage points

Xiaomi Redmi 4 design involves a combined type of rear mount, based on plastic latches located around the perimeter of the device, and an additional adhesive layer. Understanding exactly where these elements are critical for safe opening.

The latches are not evenly distributed, with more of them in the upper and lower parts of the body, as well as in the area of cameras and control buttons. The adhesive layer is applied in a thin strip along the ends. The adhesive strength can increase over time, especially if the smartphone has previously been opened and glued with a lesser composition.

⚠️ Warning: Do not force the lid off without heating if you feel strong resistance to the glue.

In some versions or after poor repairs, there may be hidden screws under the stickers, although there are none in Redmi 4. SIM-The cards are removed so that they do not interfere with the process and do not deform.

The heating and separation process of the cover

The first step is to heat the perimeter of the body, which is necessary to soften the adhesive layer that keeps the panel tightly pressed against the frame, and the heating should be uniform, but not excessive, so as not to damage the matrix of the screen on the front side or the battery inside.

Use a dryer with a temperature of about 80-90 degrees. Move the air flow along all four sides of the smartphone for 2-3 minutes. Periodically check the heating with your hand - the body should become warm, but not burning. After that, you can start mechanical action.

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Use a medical alcohol or special solvent by dripping a couple of drops into the gap between the screen and the cover to loosen the glue if heating doesn't help.

Apply the suction cup to the bottom of the back cover, closer to the logo, but not too close to the edge. Pull the suction cup up, creating tension, and in the resulting gap, carefully insert a plastic mediator. Drive the instrument along the perimeter, hearing the characteristic clicks of the undocking fix.

• 🔥 Heat the perimeter evenly from all sides.
• 👐 Create a tension with a suction cup before entering the shoulder blade
• 🎧 Listen to clicks – they signal a snap.

Dismantling internal components and plumes

Once the lid is completely separated from the body, take your time to tear it off. Inside, there may be plumes connecting buttons or other elements to the main board, although in the base model of Redmi 4, the lid often does not have its own plumes.

Put the panel that you removed upwards on the soft cloth, and now you have access to the battery, motherboard, and camera module, and for further repairs, such as battery replacement, you'll need to unscrew the screws that hold the protective plates.

When working with the insides, it is important to observe static safety. Don't touch the contact board with metal parts of the tools. If you are planning to replace the battery, it will also have to be warmed up, since it is glued to the bottom of the case with double-sided tape.

Common Mistakes and How to Avoid Them

The most common mistake in dismantling Xiaomi Redmi 4 is to try to open the body without heating. Cold glue holds very tightly, and the application of force leads to deformation of the plastic, resulting in white classes or through cracks that cannot be fixed.

Another mistake is the use of metal blades. A thin knife blade can go deeper than it needs to and damage a touchscreen or battery. Even a small puncture of the battery can cause it to ignite, so metal tools must be excluded from the process.

⚠️ Warning: If you hear the crunch of plastic during the snapping, stop immediately. You probably didn't hit the latch, but the body itself. Change the angle of the tool input.

Remember to build the system, if you forget to plug the antenna plume or stow the battery incorrectly, the phone may not turn on or catch the network poorly, and take photos at each step to remember what part was where it was.

Assembly and seal check

The assembly process is reversed to disassembly, but it has its own characteristics: before you install the lid, you need to clean the ends of the case and the panel itself of the residue of old glue. Use alcohol and soft fabric to degrease the surface, which will provide better adhesion of the new adhesive layer.

Apply a thin layer of special glue (such as a B-7000 or T-7000) around the perimeter of the frame. Don't overdo it: excess glue can leak out or get inside at the contacts. Let the glue dry for 1-2 minutes, then gently apply the lid and evenly press the edges.

• 🧹 Carefully clean the surfaces of old glue
• 💧 Apply the glue with a thin continuous line
• ⏳ Let the glue grab under the load (1-2 hour)

After you install the lid, check all the buttons, speakers and vibrator. Make sure there are no gaps between the screen and the frame. If the lid is not tightly attached, you may have damaged the latches on opening, in which case you will need an additional lock or rubber band for the first time.

Frequently Asked Questions (FAQ)

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The main secret of success is not to rush and to warm up the perimeter of the body before the start of mechanical impact.