Samsung Galaxy S8 I/O Daughterboard Replacement

Clean your microwave thoroughly before proceeding to prevent residue from sticking to the iOpener.

• Place the iOpener in the center of the microwave.
• (Carousel microwaves only): Ensure the plate spins freely to prevent overheating or damage to the iOpener.

Do not attempt to heat over 100°C (212°F).

• Heat the iOpener in the microwave for thirty seconds.
• Reheat as needed, keeping it warm for up to ten minutes. For each reheating, use an additional thirty seconds in the microwave.
• The iOpener is ready when it's just too hot to touch lightly with your skin.

Overheating may cause the iOpener to burst.

• Do not touch the iOpener if it appears swollen.
• If still too hot, continue using while waiting for it to cool down before reheating again.

Handle the iOpener with care as it will be extremely hot.

• Remove the iOpener from the microwave using a flat end.
• Use an oven mitt if necessary to protect your hands from heat.

Fill a pot with enough boiling water to submerge an iOpener.

• Heat the water to a boil, then turn off the heat.
• Submerge an iOpener in the hot water for 2-3 minutes.

The iOpener will be very hot — use tongs to handle it and hold only by the end tabs.

• Extract the heated iOpener with tongs.
• Dry the iOpener thoroughly with a towel.

Reheat as needed: boil water, turn off heat, and submerge for 2-3 minutes.

Opening your phone will compromise its waterproof seals; have replacement adhesive ready or take care to avoid liquid exposure if reassembling without it.

• Heat an iOpener and apply it to a long edge of the S8 for about 2 minutes, potentially reheating and reapplying multiple times.
• Alternatively, use a hair dryer, heat gun, or hot plate, but be cautious not to overheat the phone – especially the OLED display and internal battery.

Protect the fingerprint sensor by avoiding thin areas of adhesive.

• Cut through thick portions of adhesive around the rear glass panel edge.
• Follow the prying pattern as indicated in the first image for the rear case adhesive layout.

Ensure the back panel is warm before proceeding.

• Apply a suction cup near the heated edge, avoiding the curved portion.
• If the back cover is cracked or the suction cup won't stick, use strong tape or superglue to secure it in place.

With the suction cup in position, carefully lift and insert an opening pick under the rear glass.

Due to the curved design, be prepared to push up rather than inserting parallel to the phone's surface.

Reheat the iOpener and reapply it to the glass.

• The heat will help loosen any remaining adhesive.

Slide a precision opening pick down the side of the phone to separate the adhesive.

• Work slowly to maintain control over the tool.
• If cutting becomes difficult, reheat and reapply the iOpener.

Continue heating and cutting around the remaining three sides of the phone.

• Place a new opening pick on each side, leaving it in place while moving to the next side.
• Repeat this process until all four sides are separated from the frame.

Risk of damage: Do not open the phone further if the fingerprint sensor cable stays taut.

• Disconnect the orange cable with a blue connector as the rear glass is removed, ensuring it separates cleanly due to its short length.
• Lift the glass and inspect that the cable has disconnected.

Risk of damage: Do not force the fingerprint sensor cable if it appears snagged or taut.

• Use a spudger to gently disconnect the cable connector if necessary.

Important for reassembly:

Align the back cover with the phone, angling it until the fingerprint sensor cable connector lines up perfectly over its socket.

• Use a spudger to snap the connector into place by pressing straight down on the flat end.

Remove the glass from the phone.

Remove remaining adhesive from phone chassis with tweezers.

• Clean adhesion areas with isopropyl alcohol (at least 90%) and a lint-free cloth.
• Peel off backing of new rear glass, align one edge against the phone chassis, and press firmly onto the phone.

Turn on your phone and test repair before applying new adhesive and resealing.

• If reinstalling old back cover, follow this guide or install without pre-installed adhesive.
• Remove large chunks of adhesive to ensure flush fit. Secure with heat and pressure.

Note: Reinstalling without replacing adhesive may compromise waterproof integrity.

• If transferring camera bezel, follow our camera bezel replacement guide.

Use a Phillips #000 screwdriver to remove all eleven 3.7mm screws.

Disconnect the NFC antenna and charging coil assembly.

Remove the three 3.7 mm Phillips #000 screws.

Disconnect and remove the loudspeaker assembly.

Insert a SIM card opening tool into the small hole on the left side of the top edge.

Press firmly to eject the tray — be careful not to damage the phone's housing.

• Remove the SIM card tray from the phone.
• When reinserting, ensure proper orientation relative to the tray to avoid damaging it.

Disconnect the battery connector using the flat end of a spudger.

The battery does not need to be removed, but it should still be disconnected.

Disconnect the sensor array connector using the flat end of a spudger.

Disconnect the front-facing camera connector with the flat end of a spudger.

Disconnect the display and digitizer connector using the flat end of a spudger.

Disconnect the two antenna cables using the pointed end of a spudger.

Disconnect the antenna ribbon cable using the flat end of a spudger.

Insert the flat end of a spudger under the motherboard and gently lift it.

• The motherboard will come loose, allowing you to completely remove it from the daughterboard.
• Once removed, set the motherboard aside for further repair or replacement as needed.

Avoid snagging the battery connector when lifting the motherboard.

Lift the motherboard out of the phone.

Remove Phillips head screw, M3 x 0.5 mm.

Use the pointed end of a spudger to disconnect the headphone jack connector.

Insert the point of a spudger between the headphone jack and the board.

• Pry the headphone jack out of the board using the spudger.
• Remove the headphone jack.

Using tweezers, carefully pull the two antenna cables out of their slot next to the battery compartment.

Remove remaining antenna cables from slot using tweezers.

Remove five 3 mm Phillips #000 screws.

Fold the motherboard connector toward the bottom of the phone to clear the path for the antenna ribbon cable.

Use tweezers to carefully release the antenna ribbon cable from its mounting point on the side of the case.

Hold the tweezers firmly and use them to gently lift the daughterboard out of its slot.