Disassembly/Repair of the mobile device Samsung Galaxy S20 SM-G981 with each step description and the required set of tools.

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

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.

ℹ️ Remember the location for the SIM and Memory card (Micro SD) trays so that nothing is confused when reassembling.

⚠ 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.

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.

ℹ️ 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.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 10 screws.

ℹ️ 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.

Carefully remove the cover with an NFC tag.

Disconnect the battery connector as soon as possible.

ℹ️ The Samsung Galaxy S20 SM-G981 model has a battery EB-BG980ABY 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.

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.

ℹ️ 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 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.

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

Remove the loudspeaker assembly with antennas.

Carefully, preferably from the edge, disconnect the connectors and remove the inter-board cables 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.

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

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

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.

ℹ️ The board contains a charging port (Micro USB), microphone, vibration motor, 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.

Pry up the connectors of power volume buttons cable, display module cable, front camera, proximity sensor.

⚠ 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.

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

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.

Disconnect the connectors and remove three rear cameras.