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Disassembly of the mobile device Huawei Mate 20 Pro (Huawei Mate 20 Pro LYA-L09, LYA-L29 (Global); LYA-AL00, LYA-AL10, LYA-TL00 (China, Hong Kong); LYA-L0C (Canada)) with each step description and the required set of tools.


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Step 1. Remove the tray

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

We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.

ℹ️️ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.

Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.

Do not use a lever or any force for separation that could damage the elements inside.


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Step 3. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 7 screws.


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Step 4. Unscrew one screw

Using a screwdriver (Phillips 1.5 mm PH000), unscrew one short screw.


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Step 5. Open the cover

Remove the cover with NFC tag, antennas, protective film. Try to lift the cover by the edges and not push anything between them to not accidentally touch or short-circuit anything on the PCB.

⚠️ It is crucial while reassembling, checking the spring contacts on the board, and the contact pads on the cover match and touch. Otherwise, signal loss or signal may be quite weak.


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Step 6. Disconnect the connector

Pry up the flashlight connector and remove the cover.


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Step 7. Disconnect the battery connector

Disconnect the battery connector as soon as possible.

ℹ️️ The Huawei Mate 20 Pro model has a battery HB486486ECW with 4200 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 8. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 7 screws.


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Step 9. Open the cover

Remove the cover securing the small board.


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Step 10. Remove the inter-board cable

Carefully, preferably from the edge, disconnect the connectors and remove the inter-board cable connecting the mainboard to the daughterboard (also known as the sub-board).

⚠️ 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.

ℹ️️ An arrow on the FFC cable (flexible flat cable) indicates its correct position.


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Step 11. Disconnect the connectors

Disconnect the coaxial cable connector, cable to the loudspeaker 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 12. Remove the small board

Remove the small 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 spring contacts for an antenna unit.

⚠️ It is not necessary to insert the tool under the board when removing the small board. Internal components could be damaged.


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Step 13. Remove the loudspeaker

Remove the loudspeaker assembly with antennas.


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Step 14. Disconnect the connector

Pry up the inter-board cable connector on the sub-board.


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Step 15. 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 microphone, spring contacts for the vibration motor, 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 16. Remove the charging port

Disconnect the connector, pull out the port and remove the inter-board cable with a charging port.


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Step 17. Disconnect the connectors

Pry up the connectors of the display module cable, inter-board cable, coaxial cable, and cameras cables.


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Step 18. Remove the motherboard

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

⚠️ 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 19. Remove the bracket

Remove the bracket holding the cameras connector.


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Step 20. Remove the cameras

Pry up the connectors and remove the assembly of three rear cameras.


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Step 21. Remove the inter-board cable

Disconnect the connector and remove the inter-board cable.


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Step 22. Unscrew one screw

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


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Step 23. Remove the loudspeaker

Remove the loudspeaker assembly.


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Step 24. Remove the cameras

Remove the two front (selfie) cameras assembly.


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Step 25. Remove the small board

Remove the small board.


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Step 26. In the display frame remained

ℹ️️ In the display frame remained: the battery, coaxial cable, and vibration motor.

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 minutes in time. Our manual is suitable for all models Huawei Mate 20 Pro — Huawei Mate 20 Pro LYA-L09, LYA-L29 (Global); LYA-AL00, LYA-AL10, LYA-TL00 (China, Hong Kong); LYA-L0C (Canada) released for markets in different countries.



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