How to disassemble the Xiaomi Redmi phone: detailed instructions with photos and warnings

Disassembling the Xiaomi Redmi smartphone is a challenge that owners face when replacing the battery, repairing the screen or cleaning from dust. However, the wrong approach can lead to damage to the plumes, loss of leakage or even complete failure of the device. In this article, we will analyze the process of disassembly by step, specify critical points for different models (Redmi Note 11, Redmi 10, Redmi 13C, etc.), and provide tips on how to avoid typical errors.

Despite the fact that the design of most Redmi is similar, there are nuances: for example, in models with a similar design. IP53-Protection (as Redmi Note 12 Pro)+) additional sealant is used, and in budget versions (Redmi) 9A) — We took these features into account and put together a universal manual that will fit 90% of the devices in the line.

⚠️ Warning: Disassembly of the Xiaomi phone will void the warranty (if it is still valid).The manufacturer does not recommend self-repair - service centers use special tools and equipment to check the leakage after assembly.

1.Preparation: tools and conditions

Before you start disassembling, make sure you have everything you need. The minimum set of tools includes:

• 🔧 Plastic mediators (2-3 (a) - for separation of the body without scratches.
• 🔨 Screwdriver cross (PH00 or PH0) — Xiaomi screws are usually a size of 1.5 mm.
• 🧲 Magnetic mat or tray - so as not to lose small details (screws, clips).
• 🔥 Dryer or heatplate - for softening the glue (relevant for models with battery adhesive fastening).
• 📸 Smartphone to capture the process – fix each step so as not to confuse the order of the assembly.

Also, prepare the workspace: it should be well lit, draft-free (dust can get inside the case) and antistatic (for example, a rubber mat). If you disassemble a phone with a non-removable battery, charge it to 30-50% - this is a safe level for manipulation.

⚠️ Note: Redmi Note 11 Pro and later uses two-part battery adhesive, and if you are planning to replace it, buy a new adhesive kit in advance (e.g., adhesives, B-7000 or specialized for Xiaomi).

Turned off the phone and pulled it out. SIM-map

Take off the cover and protective film (if any)

Prepared tools and workplace

I took a picture of the original state of the phone.

Checked on YouTube video disassembly of his model-->

2.Removal of the back cover: clips vs glue

The design of the rear panel of Xiaomi Redmi depends on the model and year of release. In most cases, the cover is attached to plastic clips (budget series) or glue + clips (flagship and mid-budget models).

For models with clips (Redmi 9A, Redmi 8, Redmi 10A):

1. Insert a plastic mediator into the gap between the lid and the frame (start with the lower left corner where the speakers are located).
2. Carefully drive the mediator along the body, pressing the clips. You will hear the characteristic clicks.
3. Do not apply excessive force - if the lid does not lend itself, check if all clips are snapped.

For models with glue (Redmi Note 10 Pro, Redmi 11 Prime, Redmi 13C):

1. Heat the back cover with a hairdryer (temperature 60-70°C) for 2-3 minutes, evenly driving on the surface.
2. Use a suction cup (can be from the glass shield) for the initial removal of the lid.
3. Continue to separate the cover with a mediator, reheating the glue if necessary.

⚠️ Attention: In models with NFC-An antenna (like the Redmi Note 12) is glued to the back cover, you can tear it off if you don't take it off properly! If you're planning to replace the cover, buy a new antenna in advance (the article can be found on AliExpress using a model phone).

3. Battery shutdown: why it's critical

The first thing to do after removing the lid is to turn off the battery, which will prevent short circuits from accidentally touching the board with tools. In most Xiaomi Redmi, the battery connector is located at the bottom of the board and is labeled as BATTERY or BATT.

How to turn off the battery correctly:

• 🔋 Use a plastic tweezer or mediator to gently tuck the connector.
• Pull by the black tongue (if any) or by the connector itself, but not by the wires!
• After disconnecting, check the voltage on the board contacts with a multimeter (should be 0 V).

The Redmi Note 11 Pro+ 5G and Redmi K50 models use a dual-pin battery connector with additional protection, and if you accidentally close the contacts, the phone can turn on in charging mode — that’s okay, but it’s best to avoid such situations.

⚠️ Warning: If the battery is swelling (as seen from the deformation of the lid), don't try to puncture or bend it! Bloated batteries are prone to spontaneous combustion:

1. Take the phone out into the open air immediately.
2. Don't plug in the charger.
3. Contact the service center for recycling.

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If the battery connector is "sticky" and does not go away, drop a little isopropyl alcohol (90% +) on it - this will dissolve the oxides and facilitate the disconnection.

4. Extraction of the motherboard: screws and plumes

The motherboard in Xiaomi Redmi is mounted on screws (usually 8-12 pieces) and connected to other components with plumes.

1. Unscrew all screws (they may differ in length - remember where you stood!).
2. Disconnect the plumes: 📱 Display plume (the widest, usually at the top of the board). 🔊 Dynamic/microphone plume (thin, often glued). 📷 Camera plumes (in models with several modules).

Carefully raise the fee, starting from the top edge.

The table below shows typical problems in charging and solving them:

⚠️ Note: In models with liquid cooling (Redmi) K50 Gaming, Redmi Note 12 Turbo, there's a heat tube under the board, and if it's damaged, it'll overheat!

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Never put the board on metal surfaces - this can cause a short circuit. Use an antistatic mat or cardboard substrate.

5. Battery replacement: nuances for different models

The battery is the most common reason to disassemble the Xiaomi Redmi. The average battery life is 2-3 years, after which the capacity drops by 30-50%.

• 🔋 Capacity: Must match the original (e.g., 5000mAh for Redmi Note 11).
• 🔌 Type of connector: in new models used BTB (battery-to-board, in the old — FPC.
• 🧴 Glue: For models with adhesive attachment, a new adhesive layer is needed (for example, 3M 9448A).

Step-by-step battery replacement:

1. Disconnect the battery connector from the board.
2. If the battery is glued, heat it with a hair dryer (60°C) and tuck it with a plastic spatula.
3. Remove the residues of the glue from the body (acetone or isopropyl alcohol can be used).
4. Install a new battery, connect the connector and check the voltage with a multimeter (should be 3.7-4.2 V).

⚠️ Note: In the Redmi models with fast charging (Note 12 Pro)+, Redmi K60) Use a dual-pin battery to control the temperature. When you replace, make sure the new battery supports this function, otherwise the phone will limit the charge to 80%.

6. Build a phone: how to avoid mistakes

Assembling Xiaomi Redmi after disassembly requires no less accuracy than disassembly.

• 🔩 Twisted screws - can damage the thread in the board.
• 📱 Unconnected plumes – result in a broken display or camera.
• 🔋 Poorly glued battery – can detach when falling.

Assembly order:

1. Set the motherboard and twist the screws (start with the corner ones).
2. Connect the plumes in reverse order (first display, then camera, speaker).
3. Check the phone before installing the back cover (turn on, check the sensor, cameras, speaker).
4. Apply a new glue on the lid (if required) and press it tightly.

⚠️ Warning: Once assembled, the phone may not turn on due to an incorrectly connected power plume:

1. Remove the lid.
2. Check if the battery connector is tight.
3. If the phone vibrates but the screen doesn’t turn on, the problem is with the display plume.

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Before final assembly, wipe the contacts of the plumes with a washing gum (eraser gum) - this will remove the oxides and improve the connection.

7. Frequent problems after disassembly and their solution

Even if you did everything right, you might have problems after the disassembly.

If the phone overheats after disassembly, possible reasons:

• 🔥 Incorrectly installed heat paste (relevant for models with liquid cooling).
• 🔋 Battery damaged (check it with multimeter).
• 🛠️ Short circuit on the board (needs diagnostics in the service).

⚠️ Note: If after assembly the phone reboots itself, this may indicate damage to the board or improper attachment of antennas. In this case, it is better to contact the service - self-repair board requires a soldering station and experience.

FAQ: Answers to Frequent Questions