Removing the back of a smartphone is a common issue, whether it’s replacing broken glass, installing a new battery, or cleaning the speakers from dust. Owners of budget and mid-budget Xiaomi and Redmi models face this issue regularly, as these devices are often subjected to active household use. It’s important to understand that the dismantling process depends on the specific model, but the general principles remain similar for most of the Chinese brand’s gadgets.
Modern smartphones are assembled with a high density of layout, so careless intervention can damage the plumes or break the glass. Before starting any manipulation, you should assess your strength and the availability of the necessary tools. In this article, we will discuss in detail how to safely open the lid, what tools will be required and what you absolutely can not do.
Preparation of the workplace and tools
Quality repairs begin with arranging space, and you'll need a clean, well-lit table to keep your screws clean and keep important details in check, and the surface should be flat, preferably covered with a soft mat, to prevent the device from slipping and scratching the body.
The main tool for opening is the heating element, because the lid is glued with a special adhesive compound, this uses a professional separator, but at home, a normal hair dryer does great, you also need a mediator or a thin plastic card to peel off the panels and a set of screwdrivers to work with internal screws.
- 🔧 A set of screwdrivers (cross, Torx stars) for unscrewing screws inside the body.
- 🔥 A hair dryer or thermal pistol to soften the glue under the back panel.
- 📱 Plastic blade or mediator for safe latching.
- 🧲 Magnetic mat or sheet of paper for sorting screws by disassembly stages.
You should not use metal blades or knives for the initial opening, as there is a high risk of damage to the battery or the rear window. Plastic tools do not conduct current and are less sharp, which minimizes the likelihood of short circuit. If you plan to do repairs often, it makes sense to purchase a specialized kit for opening smartphones.
Features of the Redmi design: glass or plastic
Before you start heating, you need to identify the material behind your Redmi. Entry-level models like the Redmi 9, 10C or Note series often come with plastic panels. Plastic is more flexible and easier to remove, but it is also easier to break through under excessive pressure.
More expensive models, such as the Redmi Note Pro or the K-series, can have a glass back panel. Glass requires more careful handling and uniform heating, otherwise it will crack from a temperature difference. You can determine the material by visually or lightly tapping your nails: plastic sounds blanker, glass is louder and harder.
⚠️ Warning: If your smartphone already has cracks on the back cover, heating can aggravate the damage. In such cases, it is recommended to pre-seal the surface with transparent tape so that the fragments do not fall apart.
The design of the attachment also varies, with some models having the main adhesive around the perimeter, while the center has only a few fixing points, and knowing this feature helps to distribute the force correctly when the lid is bent.
The process of heating and softening glue
The most important step is heating the perimeter of the device, and the adhesive composition used by the manufacturer becomes elastic at a temperature around the temperature of the device. 80-90 Celsius, and it's dangerous to go above that temperature. OLED-screens and batteries, so it is important to observe the measure.
Turn the dryer on at medium power, and direct a jet of hot air to the end of the smartphone. Move the hair dryer evenly around the perimeter, lingering at each site for 10-15 seconds. Don't heat one point too long so as not to overheat the internal components.
You can carefully check the glue's readiness by trying to insert the mediator into the gap between the frame and the lid. If the tool comes in with force but does not meet resistance like a sharp knife, then the temperature is reached. If the lid does not respond, the heating procedure should be repeated.
- 🌡️ The temperature should not exceed 100 degrees, so as not to damage the display matrix.
- ⏱️ The heating time is usually 2-4 minutes depending on the power of the hair dryer.
- 🔄 The cyclicity of heating allows you to warm up the entire perimeter evenly without local overheating.
Owners of models with waterproof IP53 or higher should know that after opening the tightness of the case will be broken, and it is almost impossible to restore it in a factory way at home.
Techniques of opening and removing panels
After enough warming up, insert a thin mediator or plastic card into the top corner of your smartphone, where the speaker is usually located. Move the tool along the edge, making cutting movements to separate the glue from the frame. Don't try to bend the lid right away, act gradually.
Walk the tool around the perimeter, periodically adding heat if the plastic or glass cools. Pay special attention to the corners, because there is often the most glue accumulated there. When the perimeter is passed, you can gently lift the lid.
☑️ Ready to remove the lid
Inside, there may be plumes connecting the lid to the main board (for example, the plume of the power button or LED flash). You can not sharply pull the panel - first examine the insides for connections.
Working with internal components and plumes
When the lid is lifted, you'll see the interior design, and most Redmi models have a plastic or metal frame underneath the back covering the battery and boards, and they're mounted with a lot of small screws.
Before you unscrew the screws, be sure to disconnect the battery from the motherboard.This is a critical step that will prevent short circuits when the contacts are accidentally touched by the tool. The battery plume is usually on top or side and gently snaps into the connector.
| Type of screw | Location. | Tool. | Features |
|---|---|---|---|
| The Crosses (Phillips) | Battery frame | Screwdriver PH00 | Standard screws, easily broken |
| Stars (Torx) | Boards and modules | Screwdriver T4/T5 | Requires precise size, often with a hidden head |
| Long screws | Body angles | Screwdriver PH00 | They are of different lengths, it is important not to confuse when assembly |
| Sticker screws | Safeguard seals | Any thin one. | Damage leads to loss of warranty |
When you unscrew the frame screws, use a magnetic mat or a circuit on paper to remember which screw was twisted from where. Long screws twisted into short holes can pierce through the body and damage the display on the back side.
⚠️ Attention: Camera plumes and displays are very thin and fragile. Unplug them by putting your nail or plastic shoulder blades on a special tongue, rather than pulling the wires.
Frequent errors and precautions
The most common mistake is rushing, and trying to open a cold phone causes cracks in the glass or plastic to deform, and beginners often forget to turn off the battery, which can cause the power controller to fail.
Using inappropriate tools such as kitchen knives or thick screwdrivers is guaranteed to damage the case.Metal tools can close contacts on the board even if the phone is turned off, as there is always voltage in the battery.