Disassembly of the mobile device Samsung Galaxy S20 FE SM-G780 with each step description and the required set of tools.

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Teardown difficulty:
Moderate
Duration:
17 min

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How to disassemble Samsung Galaxy S20 FE SM-G780, Step 1/1

Step 1. Before disassembling!

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


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Step 2. Remove the tray

Use the Key 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 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.


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Step 4. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 9 screws.


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Step 5. Open the cover

Open the cover with an earpiece speaker and turn it over.


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Step 6. Remove the NFC

Pry up the connector and remove the cover with an earpiece speaker, wireless charging receiver, and NFC tag.


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Step 7. Disconnect the battery connector

Disconnect the battery connector as soon as possible.

ℹ️️ The Samsung Galaxy S20 FE SM-G780 model has a battery EB-BG781ABY with 4500 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. Remove the loudspeaker

Remove the loudspeaker assembly with antennas.


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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. Unscrew one screw

Using a screwdriver (Philips 1.5 mm PH000), unscrew one screw securing the sub-board.


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Step 12. Disconnect the connectors

Disconnect two coaxial cable connectors, cable to the mainboard, fingerprint sensor cable 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 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. Disconnect the connectors

Pry up the coaxial cable connectors.


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Step 15. Remove the cameras

Pry up the connectors and remove one front (selfie) camera and two rear cameras.


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Step 16. Unscrew one screw

Using a screwdriver (Philips 1.5 mm PH000), unscrew one screw securing the motherboard.


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Step 17. 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 18. Remove the rear camera

Pry up the connector and remove the rear camera.

Detailed disassembly instructions of Samsung Galaxy S20 FE SM-G780 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 17 minutes in time. Our manual is suitable for all models Samsung Galaxy S20 FE SM-G780 released for markets in different countries.



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