Teardown difficulty:
Moderate
Duration:
12 min

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Disassembly of the mobile device Xiaomi RedMi 4X with each step description and the required set of tools.

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How to disassemble Xiaomi RedMi 4X, Step 1/1 How to disassemble Xiaomi RedMi 4X, Step 1/2

Step 1. Remove the tray

Use an 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, and remove it. 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.

⚠️ Look in advance in the picture for the location of the cables for inter-board, touchscreen, display, buttons (if any) under the cover to not damage them accidentally.


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Step 3. Disconnect the connector

Pry up the fingerprint sensor connector and remove the back cover.


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Step 4. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 8 screws.


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Step 5. Open the cover

Remove the cover with antennas that protect the printed circuit board (PCB). Try to lift the covers by the edges and not push anything between them to not accidentally touch or short-circuit anything on the PCB.


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Step 6. Disconnect the battery connector

Disconnect the battery connector as soon as possible.

ℹ️️ The Xiaomi RedMi 4X has a battery BM47 with 4000 mAh capacity (aka rechargeable battery).

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

Also, try not to use a metal tool to disconnect the rechargeable battery connector or do it carefully.


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Step 7. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 6 screws.


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Step 8. Remove the loudspeaker

Remove the loudspeaker assembly with antennas.


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Step 9. Remove the battery

Carefully remove the battery.


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Step 10. Disconnect the connectors

Disconnect the coaxial cable connector, cable to the mainboard, on the daughterboard.

⚠️ 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).


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Step 11. Remove the daughterboard

Remove the sub-board. It is glued to the frame with metalized tape, so to facilitate the process, the board can be heated a bit.

ℹ️️ The 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 under the board when removing the sub-board. Internal components could be damaged.


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Step 12. Unscrew one screw

Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw securing the PCB.


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Step 13. Remove the rear camera

Disconnect the connector on the motherboard and remove the rear camera.


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Step 14. Disconnect the connectors

Pry up the connectors of the power volume buttons cable, display module cable, touchscreen cable.


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Step 15. Disconnect the connectors

Turn the motherboard over, disconnect the connectors of the inter-board cable, and coaxial cable from the inside and remove the PCB.


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Step 16. Remove the inter-board cable

Carefully peel the cables back and remove the inter-board and coaxial cables.


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Step 17. Remove the buttons

Carefully remove the power/volume buttons cable.


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Step 18. Remove the earpiece speaker

Pry and remove the earpiece speaker.


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Step 19. In the display frame remained

Parts are in the frame of the display module.

Detailed disassembly instructions of Xiaomi RedMi 4X 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.

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Disassembling\Repair has medium complexity and takes about 12 minutes in time. Our manual is suitable for all models Xiaomi RedMi 4X released for markets in different countries.



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