Teardown difficulty:
Moderate
Duration:
9 min

Recommended tools

Disassembly of the mobile device Huawei P Smart Z (Huawei P Smart Z STK-LX1) with each step description and the required set of tools.


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How to disassemble Huawei P Smart Z, Step 1/1

Step 1. Before disassembling!

⚠️ Before disassembling, don't forget to turn your phone off.

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Step 2. Open the tray

Using the Key tool (aka Needle) or Paperclip, open the SIM and Memory cards (Micro SD) tray and take it out.

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

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Step 3. 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.

Do not let the liquid get inside the smartphone.

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Step 4. Disconnect the fingerprint sensor

Pry up the fingerprint sensor connector and remove the cover.

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Step 5. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew the 11 screws and remove the bracket holding the connectors.

Be sure to note the location of the screws before disassembling. When assembling the device, screwing the screw in the wrong place may damage the device or its part. To avoid damage, the removed screws and individual pieces (as gaskets or brackets) must be laid out in the appropriate order, or the screws and their holes in the phone must be marked with colored markers.

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Step 6. 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.

ℹ️️ On the upper cover, you can see the metalized coating on the plastic in the form of tracks and contact pads. These are Wi-Fi, Bluetooth, and GPS antennas.

⚠️ It is important 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 7. Disconnect the battery connector

Disconnect the battery connector as soon as possible.

ℹ️️ The Huawei P Smart Z STK-LX1 model has a battery HB446486ECW 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 8. Remove the fingerprint sensor cable

Disconnect the connector and remove the fingerprint sensor cable.

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Step 9. Unscrew the screws

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

ℹ️️ Be sure to note the location of the screws before disassembling. When assembling the device, screwing the screw in the wrong place may damage the device or its part. To avoid damage, the removed screws and individual pieces (as gaskets or brackets) must be laid out in the appropriate order, or the screws and their holes in the phone must be marked with colored markers.

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Step 10. Open the cover

Remove the cover protecting the daughterboard (aka sub-board). Try to lift the cover by the edges. Do not push anything between the cover and PCB to not accidentally touch or short-circuit anything on the board.

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Step 11. Remove the loudspeaker

Remove the loudspeaker assembly with antennas.

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Step 12. Disconnect the connectors

Pry up the connectors of the 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 13. 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, 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 14. Remove the cameras

Pry up the connectors and remove two rear cameras.

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Step 15. Unscrew the screw

Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw and remove the bracket holding the connector.

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Step 16. Disconnect the connectors

Pry up the connectors of the pop-up camera, power volume buttons cable, display module 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 17. Remove the mainboard

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 18. In the display frame remained

ℹ️️ In the housing remained: the earpiece speaker, battery, vibration motor, and pop-up front-facing camera.

Detailed disassembly instructions of Huawei P Smart Z in the video, made by our mobile repair & service center:


Disassembling\Repair has medium complexity and takes about 9 minutes in time. Our manual is suitable for all models Huawei P Smart Z — Huawei P Smart Z STK-LX1 released for markets in different countries.


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