How to disassemble the Xiaomi Redmi smartphone yourself: instructions with photos and warnings

Disassembling the Xiaomi Redmi smartphone is a challenge that every owner who decides to replace the battery, screen or other components will face sooner or later. Unlike flagship models, budget Redmis are often designed with an emphasis on repairability, but this does not mean that the dismantling process is free of pitfalls. Without the right tools and knowledge, you can damage the plumes, break latches or even disable the motherboard.

In this article, we will take a look at how to disassemble any Xiaomi Redmi model, from the old Redmi 4X to the new Redmi Note 12, without damaging the body and internal components. You will learn what tools are really needed (and which can be replaced with improvised tools), how to properly disconnect the plumes, and why disassembling without first turning off the battery can lead to a short circuit even on a switched-off phone.

If you've never taken a smartphone apart before, don't worry, we'll give you step-by-step instructions with photos of key milestones, and for experienced craftsmen, we've prepared a Redmi Distinguishment Table of Different Generations and Adhesive Connections tips. We warn you, even if you're confident in your abilities, disassembling a smartphone is not warranty (if it's still valid).

Preparation for disassembly: tools and security measures

Before you start dismantling the Xiaomi Redmi, make sure you have everything you need. Experienced craftsmen know that 90% of the damage to disassembly is due to inappropriate tools or haste. Here is the minimum set you will need:

• 🔧 Plastic blades (preferably a set of 3-5 pieces of different thicknesses). Metal mediators are not recommended - they scratch the body and can close contacts.
• 🔥 A dryer or a thermo-air station (for models with adhesive battery attachment, for example, Redmi Note 10 Pro).°C, otherwise you can melt the plastic.
• 🔋 Tap tape or capron screeds to lock a disconnected battery (required!) Even a discharged battery can cause a short circuit when in contact with metal parts of the body.
• 📦 The screw containers (or magnetic mat) screws in Redmi often differ in length - confusing them, you risk damaging the motherboard.
• 🧲 Magnetic screwdriver with nozzles PH00, Y00 and T3 (Most of the screws in Redmi are cruciform, but some models have triangular or star-shaped propellers).

Also, make sure that the workplace is well lit, without carpeting (static electricity!), and with minimal foreign objects, and if you're disassembling the phone on the table, put a silicone mat under it, which will prevent parts from slipping.

⚠️ Warning: If your Redmi is in the water or has been hit hard, disassembly can be dangerous! corrosion on the board or damaged battery contacts increase the risk of fire.

Step-by-step: how to remove the back cover

The first and most important step is to remove the back cover, which is mounted on latches and glue in most Xiaomi Redmi models, but there are nuances depending on the generation:

• 📱 Redmi Note 8/9/10 And newer: the lid is glued around the perimeter, and you'll need to heat it with a hair dryer (1–2 minutes at the edges) and careful polishing with a plastic blade.
• 📱 Redmi 7/8A And older: Latches without glue, but they're fragile. The pressure has to be even, or the lid will crack.
• 📱 Redmi K-series (e.g., Redmi K-series, K20 Pro: Glass cover - here you need special care and special suction cups.

Algorithm of action:

1. Turn off the phone and remove it. SIM-card and memory card (if any).
2. Heat the edges of the lid with a hair dryer (for models with glue). Keep the hair dryer at a distance of 5-7 cm, constantly moving it so as not to overheat one area.
3. Insert a plastic blade into the gap between the lid and the body (usually starting at the bottom edge where the connectors are located). Carefully drive the blade along the perimeter, snapping the clamps.
4. If the lid does not lend itself, do not apply force - it is better to warm up the problem area again.

On some models (such as the Redmi Note 11 Pro+), there may be an additional metal plate attached to the lid with screws, and don’t forget to remove it before you take out the battery!

Battery shutdown: why it's critical

One of the most dangerous things about disassembling is the battery, and many newcomers skip this step, thinking that if the phone is turned off, there are no risks. It's a big mistake: even when it's off, there's still a voltage on the board, and accidentally closing the battery contacts can lead to:

• ⚡ Short circuit and failure of the power controller.
• 🔥 Battery fire (especially if it swells).
• 💥 Damage to plumes by accidental screwdriver touch.

To turn off the battery safely:

1. After removing the lid, find the battery plume (usually black or red, located at the bottom of the board).
2. Carefully put the connector with a plastic blade. Don't pull the wires! - You need to tear the plume off behind the connector itself.
3. Secure the plume with tape or screed so that it does not touch the board.

⚠️ Warning: If the battery is blown up (cover is raised, case warping), do not try to remove it yourself! The risk of rupture and fire is extremely high.

On some models (e.g. Redmi 9T), the battery is glued to the body, and to remove it, you need to:

1. Put a plastic blade on the side of the battery.
2. Pull a special black tape (pull-tab), if any.
3. If there is no tape - carefully "cut" glue with a spatula, moving around the perimeter.

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If the pull-tab breaks, do not try to pull the battery by force. It is better to apply a few drops of isopropyl alcohol (90%+) under the battery - it will dissolve the glue in 5-10 minutes.

Withdrawal of motherboard and other components

Once the battery is turned off, you can start removing the motherboard, which requires the utmost care, since the board contains fragile elements: plume connectors, microphone, speakers and antenna modules. Most Redmi models attach the board to 8-12 screws of different lengths.

Procedure:

1. Unscrew all the screws, starting with the longest ones (usually located at the corners of the board).
2. Disconnect all the plumes: the display, the cameras, the power and volume buttons. The plumes are latched, and you need to gently lift them with a spatula.
3. If the board is tight, don't pull it by force, check if all screws are twisted and if there are hidden latches (for example, under a metal plate).
4. Raise the board from one end and carefully remove it from the edges. Don't touch the chips with your fingers!

At this stage, there are often problems with:

• 🔌 The touchscreen plume is the most fragile. If you damage it, the screen will stop responding to touch.
• 📸 Camera module -- some models have it glued to a board. Don't pull it by force, or you'll rip the connector off.
• 🔊 Speakers and microphones - they can remain in the case and come off with careless removal of the board.

Features of dismantling popular models Redmi

While most Xiaomi Redmis have a similar design, each generation has its own nuances, and we’ve collected key differences for popular models:

Redmi Note 10 / Note 11

These models have double-sided tape under the battery, which is difficult to remove without heating, and it also uses a combined display plume and touchscreen — if you damage it, you have to change the entire module. Pay special attention to the USB-C connector, which is soldered to the board and easily detached when you sloppy extraction.

Redmi 9 / 9A / 9C

These models only hold the back cover on the latches (no glue), but they are very fragile. A common problem is that the camera mounts break when you remove the board, and it also uses a separate fingerprint scanner plume that is easy to tear.

Redmi Note 8 Pro

One of the hardest models to disassemble is a metal case with adhesive attachment and an extra metal plate under the battery, which requires a hair dryer and patience, and this model also has two cameras on separate plumes, which are easily confused when reassembled.

Redmi K40 / K50

The flagship K series models have a glass back cover that cracks when heated unevenly, and it's better to use special suction cups to remove glass, and in these models, liquid cooling is also used, if the tube is damaged, the system will stop working.

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Before disassembling the Redmi Note 10 Pro and later, be sure to check if there is a metal plate under the lid - it must be removed before you take out the battery!

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling Xiaomi Redmi, we have collected the most common of them and ways to prevent them:

• 🔧 Tangled screws: screws of different lengths can damage the board.Solution: Stack them in separate containers with signatures (e.g., "corners," "middle").
• 🔋 Short circuit: Touching the contacts of the battery or board with a screwdriver. Solution: Always turn off the battery first and use dielectric tools.
• 📱 Cracked cover: Too much pressure on the latches Solution: Heat the cover with a hairdryer and use multiple blades at once to evenly distribute the force.
• 🔌 Torn plumes: The most common type of injury is the display plume. Solution: Disconnect the plumes with a plastic blade only, putting the latch on instead of pulling the wires.
• 💧 Moisture intake: When using alcohol to remove glue. Solution: Apply the alcohol point-by-point and wipe the excess with a napkin immediately.

Another common problem is the loss of small parts, like rubber pads under the buttons or metal latches, to avoid this:

• Work on a light table without cracks.
• Use a magnetic mat to collect screws.
• Take photos of each stage of disassembly – this will help with the reverse assembly.

⚠️ Warning: If the phone doesn't turn on after disassembly, don't panic. First check: Is the battery connected, is the power plume damaged, is all the screws in place (sometimes the board doesn't contact the case due to lack of grounding). If everything is fine, but the phone is not responding – there may have been a reset. NVRAM (In this case, flashing through Fastboot will help.

Reverse Assembly: tips and performance check

Getting your phone back together is often harder than disassembling, and here are some key points to consider:

1. Check all the plumes: They should be tightly inserted into the connectors. If the plume is not fixed by the latch, you may have confused its side.
2. Make sure there are no foreign objects: Screws, scotch scraps or dust can cause a short circuit.
3. Tighten the screws cross-cross: This will prevent skewing of the board. Do not put excessive effort - the broken thread may require replacement of the entire body.
4. Check the buttons: They should be pressed with a characteristic click. If the button "fails", you forgot to install the rubber pad.

Don't turn on the phone right away.

1. Connect the charger and check if charging is underway (the indicator should catch fire).
2. If charging is going, wait 5-10 minutes, then try turning on the phone.
3. After switching on, check: 📶 Network operation (SIM-map, Wi-Fi). 🔊 Sound in speakers and microphone. 📸 Cameras (front and main). 👆 Touch screen and buttons.

If something's not working, don't panic. Go back to the disassembly phase and check:

• 🔌 Are all plumes connected (especially antenna modules for the network).
• 🔋 Will the battery not rise (sometimes after disassembly it begins to ooze).
• 🛠️ Have you forgotten to install metal screen plates (if any).

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If the phone is turned on after assembly, but does not see SIM-check the contacts of the tray and the antenna plume, often the problem is the poor contact of the metal frame with the board.

FAQ: Answers to Frequent Questions