Teardown difficulty:
Moderate
Duration:
17 min

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Disassembly of the mobile device Samsung Galaxy A80 SM-A805 with each step description and the required set of tools.


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How to disassemble Samsung Galaxy A80 SM-A805, Step 1/1

Step 1.

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


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Step 2.

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.

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.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew the two screws. Also, remove the bracket.


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Step 5.

Slide the mechanism of the cameras up.


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Step 6.

Carefully remove the covers hiding the screws.


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Step 7.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 6 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 8.

Remove the cover with antennas and an NFC tag. 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.


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Step 9.

Disconnect the battery connector as soon as possible.

ℹ️️ Samsung Galaxy A80 SM-A805 model has a battery EB-BA905ABU with 3700 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 10.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 4 screws.


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Step 11.

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


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Step 12.

Remove the loudspeaker assembly with antennas.


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Step 13.

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 14.

Disconnect the coaxial cable connectors, display module cable, 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 15.

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


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Step 16.

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, card holders, 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 17.

Disconnect coaxial cable connectors and the connector of the camera rotation mechanism.


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Step 18.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 5 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 19.

Turn the motherboard over.

⚠️ Be careful two camera mechanism cables are connected from the inside.


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Step 20.

Disconnect two camera mechanism cable connectors and remove the motherboard.


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Step 21.

Carefully remove the camera mechanism.


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Step 22.

ℹ️️ In the display frame remained: rotation mechanism, battery, fingerprint sensor, coaxial cables.

Detailed disassembly instructions of Samsung Galaxy A80 SM-A805 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 easy complexity and takes about 17 minutes in time. Our manual is suitable for all models Samsung Galaxy A80 SM-A805 released for markets in different countries.



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