Samsung Galaxy S21 USB-C Charging Port and Daughterboard Replacement

Accidental insertion of the SIM eject tool into a microphone hole will not necessarily cause damage.

• Insert a SIM eject tool, bit, or straightened paper clip into the SIM card tray hole on the bottom edge of the phone.
• Press the tool into the SIM card tray hole to eject the SIM card tray.
• Remove the SIM card tray.

Power off your phone.

• Heat an iOpener and apply it to the back cover's bottom edge for two minutes.
• Alternative heat sources: hair dryer, heat gun or hot plate. Be cautious not to overheat the phone, as this can cause damage to the display, internal battery, and plastic back cover.

Apply a suction cup near the center of the bottom edge.

• Pull up on the suction cup with strong force to create a gap between the back cover and frame.
• If needed, apply heat to aid in separation.
• Insert an opening pick into the gap, but only up to 5 mm to avoid damage.

Slide the pick back and forth along the bottom edge, slicing through the adhesive.

Do not remove the pick as this may cause the adhesive to reseal.

Apply heat from an iOpener to the left edge of the back cover for 2 minutes.

• Attach a suction cup to the phone's back near the left edge, about center.
• Pull up firmly on the suction cup to separate the cover and frame.

• Be careful: Avoid pushing the pick too far (over 5 mm) or damaging internal components.

• Gently insert an opening pick into the created gap, up to 5 mm only.

Insert an opening pick at the top left edge and slide it down towards the bottom left corner.

Avoid cutting past where the camera shell meets the back cover, as this may crack the plastic.

Leave the pick in place to prevent resealing of the adhesive.

Apply iOpener to the right edge of the back cover and heat for 2 minutes.

Apply a suction cup to the back of the phone, near the center of the right edge.

Pull up on the suction cup with strong, steady force to create a gap between the back cover and the frame.

• Insert an opening pick into the gap, but do not insert it more than 3 mm to avoid damaging the secondary interconnect cable.

Insert an opening pick into the device's right edge, moving it back and forth to separate the adhesive.

Be sure to leave the pick in place to maintain access and prevent re-adhesion.

Insert the right-edge opening pick into the top-right corner of the phone.

• Rotate the pick around the corner until it is seated properly.
• Be cautious not to insert the pick more than 5 mm, as excessive insertion may damage internal components.

This procedure can be repeated for each corner except the top-left, where the rear-facing camera is located.

Slide the top-most opening pick towards the camera shell.

• Repeat on the left edge using another opening pick.

Heat an iOpener and apply it to the camera shell for two minutes.

• Note that there is additional adhesive to the right of the camera that must be cut through.
• Avoid damaging the plate surrounding the phone's flash on the back cover by angling your pick downward.

Rotate the back cover counterclockwise to create a gap.

• Insert a pick up to only 5 mm to prevent damage.
• Place an opening pick in the created gap.

If this method fails, proceed to the next step; otherwise, skip it.

Insert an opening pick between the camera shell and frame.

Multiple rounds of heating may be required due to a significant amount of adhesive holding the frame in place.

Align the opening pick with your phone's flash.

Be cautious not to touch the flash's metal plate, as it can feel like adhesive and cause damage.

• Insert the pick slowly, angling downward to avoid sliding into the plate.
• Slice the adhesive to the right of the camera.

Remove the back cover.

• If stuck, slide a pick around the edges to separate it completely from the frame.

Power on your phone and test functions before reassembling; power down afterwards.

Remove adhesive chunks with tweezers or fingers; apply heat if necessary.

• For custom-cut adhesives, follow the specified guide.
• For double-sided tape, refer to its respective guide.

Remove the motherboard bracket using a Phillips screwdriver.

• Unscrew the five 4mm-long Phillips screws.

Use tweezers to carefully lift and unclip the motherboard bracket from the frame.

Do not fully remove the bracket at this time, as it remains attached to the wireless charging coil.

Careful not to damage surrounding components or the socket.

• Use a spudger to pry up the battery press connector, holding the motherboard bracket out of the way with tweezers or your fingers.
• Pry only under the edge of the connector to avoid damaging it and nearby components.

Do not press down on the middle; if misaligned, pins can bend causing permanent damage.

• To reattach: align and press one side until clicking into place, then repeat on the other side.

Hold the motherboard bracket aside.

• Use a spudger to pry up the wireless charging coil's press connector.
• Disconnect the press connector once it is loose.

Remove the screws holding the loudspeaker in place using a Phillips screwdriver.

• There are six screws, each measuring 4 mm long.

Insert the point of a spudger into the notch in the top-left corner of the loudspeaker.

• Pry upwards carefully to release the clips holding it in place.

Disconnect and remove the wireless charging coil.

Insert the flat edge of a spudger into the primary interconnect cable's press connector.

• Pry upwards gently to release the connector.
• Disconnect the press connector once it's released.

• Locate the secondary interconnect cable's press connector.
• Pry up the press connector using the flat end of a spudger.
• Disconnect the secondary interconnect cable.

• Use a spudger to pry up the secondary interconnect cable's press connector, then disconnect it.
• Repeat the process with the main interconnect cable's press connector.

Remove both cables using tweezers or your fingers.

• Set the removed cables aside for reuse during reassembly.

Remove the three screws (each 3.5 mm long) from the daughterboard using a Phillips screwdriver.

• Use a spudger to pry up the daughterboard.
• Pull the daughterboard upwards with your fingers and remove it from the bottom of the phone.

If you encounter resistance, check if the USB-C port is still caught in its groove. Gently wiggle the daughterboard while pulling until it separates completely.