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Disassembly/Repair of the mobile device Xiaomi RedMi Note 3 with each step description and the required set of tools.


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How to disassemble Xiaomi RedMi Note 3, Step 1/1 How to disassemble Xiaomi RedMi Note 3, Step 1/2

Step 1. Remove the tray

⚠️️ Before disassembling, do not forget to turn your phone off.

Use the ejection tool (aka Needle) or Paperclip. Push the tip all the way into the hole until the tray ejects, and then pull the tray of SIM and Memory card (Micro SD) out.

⚠️️ Pay attention! The tool must be inserted into a hole on the edge of the phone's housing. Do not press too hard. It may break the tray eject mechanism.


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Step 2. Open the back cover

Using a spudger or a plastic pick, carefully, around the edge, detach the back cover clips.

Do not insert the tool deeply or bend it. Otherwise, the housing may be tampered with or damaged.

⚠️️ Be careful when opening the cover from the volume and power buttons side. Thin cable and fragile buttons are straightforward to damage.

⚠️️ Pay attention to the fingerprint sensor, its cable is inside and is attached to the motherboard, but the fingerprint sensor itself is located on the back cover. We have to disconnect the fingerprint sensor on the motherboard before we remove the back cover.


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Step 3. Remove the battery

Disconnect the battery connector as soon as possible. It is better to use a non-metal or plastic tool to avoid any damage.

ℹ️️ The Xiaomi RedMi Note 3 model has a battery BM46 with 4000 mAh capacity (aka rechargeable battery).

⚠️️ It is highly recommended to disconnect the connector to avoid possible short circuits during disassembly.

With extreme care, remove the battery because it is glued from the inside by the manufacturer.


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Step 4. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the five screws.


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Step 5. Remove the loudspeaker

Pry over the edge and remove the loudspeaker assembly with antenna tracks.


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Step 6. Remove the daughterboard

Disconnect the coaxial cable connector, inter-board cable connector.

⚠️️ Do not pull on the cable or pry it with a sharp tool, the connectors are pretty weak and break easily, or the cable falls out of the end (lug).

Remove the sub-board. It may be glued to the frame or attached with attachments like latches or hooks, so be careful.

ℹ️️ The sub-board contains a charging port (Micro-USB), microphone, spring contacts for the speaker, and an antenna unit.

⚠️️ It is not necessary to insert the tool underneath when removing the sub-board. Internal components could be damaged.


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Step 7. Unscrew the screws

Using a screwdriver (Philips 1.5 mm PH #000), unscrew the four screws. In our case one screw was a silver one.

⚠️️ If you have one please remember its location it may have different parameters like size, length etc.

⚠️️ If you screw it in a different place you may break or pierce through something.


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Step 8. Open the cover

Pry over the edges. Move an opening tool along the edge detach the clips and remove the cover with antenna pads and tracks.


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Step 9. Remove the cameras

Disconnect connectors on the motherboard and remove the main and front (selfie) cameras.


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Step 10. Disconnect the connectors

Pry up the connectors of the side buttons cable, display cable, touchscreen cable, inter-board cable, and coaxial cable.

⚠️️ Be careful when removing the cables from the connectors, the cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.


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Step 11. Unscrew the screws

Using a screwdriver (Philips 1.5 mm PH #000), unscrew the four screws securing the motherboard and vibration motor. Also, we remove the bracket holding the vibration motor.


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Step 12. Remove the motherboard

Carefully remove the printed circuit board. There is no need to use a lever or try to reach the circuit board by force. Make sure that nothing is getting in the way or holding the circuit board.

The motherboard, also, may be attached with attachments like latches or hooks, be careful.

⚠️️ Do not bend the circuit board when removing it or push tools under it. Unbeknownst to yourself, you can damage components or cables from the inside.


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Step 13. In the display frame remained

ℹ️️ In the display frame remained: the earpiece speaker, coaxial cable.

Detailed disassembly instructions of Xiaomi RedMi Note 3 in the video, made by our mobile repair & service center:

If you have a question, ask us, and we will try to answer in as much detail as possible. If this article was helpful for you, please rate it.


Disassembling\Repair has medium complexity and takes about 10 minutes in time. Our manual is suitable for all models Xiaomi RedMi Note 3 released for markets in different countries.



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