Disassembling a Xiaomi smartphone on your own is a task that scares many users: the fear of damaging fragile components, losing a warranty or even disabling the device often stops even experienced enthusiasts. However, with the right approach, toolkit and understanding of the phone’s internal structure, the disassembly process becomes predictable and safe.This article will help you understand the nuances of disassembling different Xiaomi models, from the budget Redmi to the flagship Mi and the new model. POCO, with regard to their design features.
It's important to understand that modern smartphones are designed with a focus on compactness and minimization of gaps. This means that many elements are not only fastened by screws, but also by adhesives, latches and even soldering. For example, most Xiaomi models are glued to the body after 2019, and display and camera plumes are fixed by fragile connectors. A failure to disassemble can result in damage to flex boards or break contacts, which will require expensive repairs. So before you start, assess your skills and risks, sometimes turn into a cheaper service failure center.
In this article, we will look at:
- 🔧 What tools will be needed to disassemble Xiaomi and where to buy them
- 📱 Step-by-step with photo for popular models (Redmi Note 10, POCO X3, Mi 11 and others.)
- ⚠️ Common Errors and How to Avoid Them (for example, why you can’t use metal mediators)
- 🔋 Features of working with the battery and other dangerous components
- 🛠️ How to put the phone back together so that there are no “extra” details
1. Disassembly preparation: tools and safety
Before you start disassembling, make sure you have everything you need. Xiaomi’s minimum set of disassembly tools includes:
- 🔩 Set of screwdrivers (cross-cross-haul) PH00, PH0, flat 1.5 mm, five-beam Security Torx T5/T6 for some)
- 📱 Plastic mediators (or guitar mediators) for body separation
- 🧲 Suction cup for display removal (optional, but useful for models with glass back panel)
- 🔥 Hair dryer or thermal air station for softening glue (temperature 60-80)°C)
- 🧴 Isopropyl alcohol (90%+) Cleaning contacts and removing glue residues
- 📦 Containers for screws (or magnetic mat) – so as not to lose small parts
Note: many Xiaomi models (e.g. Redmi Note 9 Pro) POCO F3) Attempt to open the phone without heating can result in cracked plastic or broken clips. This is one of the main reasons why inexperienced users break phones on the first attempt to disassemble. It is also important to turn off the phone and wait for the battery to run out (or remove it immediately after opening) to avoid short circuits.
⚠️ Note: If your Xiaomi is warranty-free, the disassembly will void it. The manufacturer uses special seals (for example, on screws or under the back cover) that break down when opened. Some service centers may refuse repairs if they find traces of self-intervention.
For models with IP-certification (e.g. Xiaomi 12 Pro with a IP53) Disassembly can violate the leakage, in which case, after assembly, the phone will lose protection from dust and moisture. If you are interested in water resistance, we recommend that you contact an authorized service.
2. Step-by-step disassembly: universal instruction for most models
Although the design of Xiaomi phones varies depending on the series, the overall disassembly algorithm remains similar. Below is a universal instruction that is suitable for most devices (exceptions we will discuss in the next section).
Step 1 Turn off the phone and remove it. SIM-map.
- 🔄 Press and hold the power button, then select Turn off.
- 📶 Use a paper clip or tool to remove the tray SIM-maps (usually located on the side).
Step 2. Heat the back cover.
- 🔥 Turn on the dryer at minimum power (or set the temperature of the thermo-air station at 60-70).°C).
- 🌀 Warm up the edges of the rear panel around the perimeter for 2-3 minutes, evenly moving the hair dryer.
- ❗️ Don’t direct hot air to the camera or display – this can damage the optics or glue under the screen.
Step 3. Separate the body.
- 🧲 Suck it to the back cover (if it's glass) and pull it up.
- 🔧 Insert a plastic mediator into the gap that appears and carefully run them along the edge, separating the latches.
- ⚠️ Do not use metal tools – they can scratch the body or damage the plumes.
Step 4: Unscrew the screws and remove the metal plate.
- 🔩 All the screws in Xiaomi are different lengths. Remember (or take a picture) what screw was twisted from where.
- 🛡️ Carefully remove the metal plate covering the battery and the plumes. It may be glued -- don't pull it sharply.
I disconnected my phone from the network and turned it off.|He warmed up the back cover with a hair dryer.|Prepared plastic mediators and screwdrivers|I took a picture of the screws.|Wearing an antistatic bracelet (optional)-->
Step 5. Disconnect the battery.
- 🔋 The battery is glued to the body. Put a plastic blade on it (not metal!) and slowly pull it up.
- ⚡️ Before turning off the battery plume, make sure the phone is off – a short circuit can disable the motherboard.
⚠️ Warning: If the battery is swelling (as seen from the deformation of the back cover), don't try to remove it yourself! Bloated Li-ion batteries can ignite when mechanically exposed.
3. Features of disassembling popular Xiaomi models
Despite the general principles, each Xiaomi series has unique nuances, and below is a table with key disassembly features for popular models:
| Model | Type of back cover | Features of the battery | Difficulty disassembling (1–5) | Notes |
|---|---|---|---|---|
| Redmi Note 10/11 | Plastic. | Sticked, easy to retrieve. | 2 | Screws under the back cover are hidden under stickers |
| POCO X3/X4 | Plastic/glass | Sticked, display plume brittle | 3 | Carefulness is required when working with the camera (4 modules) |
| Mi 11/12 | Glass. | Glued. + side-latch | 4 | It is recommended to use a suction cup to remove the lid. |
| Redmi 9A/9C | Plastic. | Easy to remove, without strong glue | 1 | The ideal model for the first disassembly |
| Black Shark 4/5 | Metal/glass | Glued. + screw-up | 5 | Experience required – a complex cooling system |
For example, in POCO X3 The main challenge with the Pro is that it has a four-module camera, which is easy to damage when it is not properly extracted, and in the Mi 11 Ultra, the back cover is made of ceramics, so you can't heat it with a hair dryer too much, otherwise it can crack. For such models, it is better to use special adhesive strips (for example, from iFixit), which make it easier to remove the lid without heating.
If you’re disassembling the Redmi Note 8 Pro or older model, note the metal frame that can interfere with motherboard extraction, requiring you to unscrew additional screws under the battery.
What to do if the screw breaks when unscrewed?
4. Work with fragile components: display, camera, plumes
One of the most important things is to remove the display and the camera, and these components are connected to the motherboard in thin plumes that are easy to tear when you move around carelessly.
Display:
- 📺 Before removing the display, warm up its edges with a hairdryer (temperature not higher than 70).°C).
- 🔧 Unscrew the screws fixing the metal plate over the display plume.
- 🖥️ Carefully put a plastic blade on the plume and disconnect the connector!
Camera:
- 📷 In models with multiple modules (for example, POCO X3) The camera plumes often overlap.
- 🔩 Some cameras are attached with additional screws under a metal plate.
- 🧹 After extraction, clean the lenses of dust with a soft brush.
Speakers and microphones:
- 🔊 The speakers are usually glued to the body. To remove them, warm up the area with a hairdryer and apply a mediator.
- 🎤 Microphones are often located next to the charging socket. Their plumes are very thin -- be careful!
⚠️ Note: If you’re disassembling a phone to replace a display, remember that new screens for Xiaomi often come without pre-applying glue. B7000 liquid-glue LOCA Incorrect adhesion may cause air bubbles or a broken touchscreen.
When working with plumes, use an antistatic bracelet or periodically touch a grounded metal object (for example, a heating battery).
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If the plume doesn't detach from the connector, don't pull it by force. Instead, gently attach the connector on both sides with a plastic blade, which is usually fixed by latches that need to be slightly extended to the sides.
5. Common Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when disassembling Xiaomi, and here are the most common ones and ways to prevent them:
1. Damage to the display plume.
- 🚫 Error: Abrupt disconnection of the plume or bending it at an angle of more than 90°.
- ✅ Solution: Disconnect the plume by the edges, not the middle. Use tweezers.
2. Broken hull latches.
- 🚫 Attempt to open the phone without heating or using metal tools.
- ✅ Solution: Always warm up the case and use plastic mediators. If the latch breaks, it can be replaced with a new one (remixes are sold).
3. loss of screws or their improper installation.
- 🚫 Mistake: Mixing screws of different lengths or twisting them into the wrong holes.
- ✅ Solution: Place the screws on the containers with signatures (e.g., "camera", "motherboard"). In extreme cases, take a picture of their location before unscrewing.
4. Battery damage.
- 🚫 Error: Using metal tools to tamper with the battery or bending it.
- ✅ Solution: Use a plastic spatula and special pulling strips (pull tabs), which often come bundled with new batteries.
5. Forgotten stickers or fillings.
- 🚫 Mistake: Ignoring stickers on screws or plumes that may hide additional fasteners.
- ✅ Solution: Carefully inspect all the elements before disassembling. If the sticker interferes, gently stab it with a knife.
Another common problem is damage to waterproofing gaskets in waterproof models (e.g. Xiaomi). 12S If you do not plan to restore tightness, after assembly, the phone will lose protection from moisture. In this case, we recommend replacing the pads with new ones (you can buy them in specialty stores).
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The most common reason for a phone to fail after a disassembly is the battery mishandling. Always turn it off first and plug it in last!
6. Build a phone: how not to forget anything important
Getting your phone back together is often harder than disassembling it, and here's a step-by-step algorithm to help you avoid mistakes:
Step 1. Check all the components.
- 🔍 Make sure all plumes and connectors are clean (wipe them with isopropyl alcohol if necessary).
- 🔋 Check the battery for swelling or damage.
Step 2. Set the motherboard.
- 🛠️ Carefully put the fee in place, combining all connectors.
- 🔩 Turn the screws in reverse order (start with the longest ones).
Step 3, plug the plumes in.
- 🖥️ Start with the battery plume, then connect the display, camera, and other components.
- ⚠️ Make sure all the plumes are firmly seated in the connectors (click should be heard).
Step 4. Set the battery.
- 🔋 Stick the battery to double-sided tape or use the original glue.
- 📏 Make sure the battery is flat, without any distortions.
Step 5, close the hull.
- 🧩 Combine the latches of the back cover and gently press it around the perimeter.
- 🔥 If necessary, warm the edges with a hair dryer for better glue fixation.
Step 6. Testing.
- 🔌 Connect the charger and check if the phone is switched on.
- 📱 Check the touchscreen, cameras, speakers and microphones.
If the phone doesn't turn on after assembly, don't panic.
- 🔌 Unconnected battery plume or display.
- 🔧 Insufficiently swirling screws on the motherboard (there may be poor contact).
- 🔋 Damaged battery (check it with a multimeter).
If the problem is not solved, disassemble the phone again and check all connections. In 90% of cases, the malfunction after assembly is due to poor contact of plumes or improperly installed screws.
7.When disassembly is inappropriate: alternative solutions
Disassembly of the phone is not always justified, and in some cases it is better to consider alternative options:
1. Guarantee phone.
- 📜 If the device is still warranty, disassembly will cancel it, in which case it is better to contact an authorized service center Xiaomi.
2. complex repairs (for example, replacement of the motherboard).
- 🛠️ Replacing the board requires special equipment (sweeping station, microscope) and experience.
3. Bloated battery.
- ⚡️ As mentioned earlier, a bloated battery is dangerous and must be replaced in a well-ventilated area and be safe.
4. A crack on the display with a working touchscreen.
- 📺 If the sensor is working and the cracks are only on the glass, you can use a full-coated protective film or glass instead of a full-coated display replacement.
5. Software problems.
- 💻 If the phone doesn’t turn on due to a firmware failure, try a hard reset (Power). + Volume Up or refashion it via Fastboot.
If you are not sure about your abilities, consider selling the phone "for spare parts" or contact the professionals. For example, replacing the display in the service will cost 3-5 thousand rubles, while replacing it yourself can lead to additional costs if something goes wrong.