Samsung Galaxy S25 Edge Sub Board Replacement

A fully charged lithium-ion battery can pose a fire risk if damaged during this repair.

• Let the phone's battery drain to below 25% before starting the repair.
• Completely power off the phone and unplug all cables.

Insert a SIM eject tool, SIM eject bit, or straightened paperclip into the SIM card tray hole.

• A small mic hole is next to the SIM tray; do not confuse them.
• Firmly press the SIM eject tool into the hole to eject the SIM card tray.

• Be careful when handling the ejected tray — it can be fragile.

• Remove and store the SIM card.
• To reinsert, align the hole on the left side before firmly pushing the tray into place.

Remove the back cover. The mild adhesive holding it in place can be softened with heat.

• Use an iOpener and apply it to the bottom edge of the back cover for two minutes to loosen the adhesive.
• As an alternative, use a hair dryer, heat gun, or hot plate to heat the cover.

Apply a suction handle about 1/3 from the bottom edge of the back cover.

• Pull up on the suction handle with strong, steady force.

• A gap should form between the cover and frame.
• Insert the tip of an opening pick into the gap.

Locate the adhesive securing the back cover around the perimeter of the frame.

• Use the provided picture as a reference while separating the adhesive.
• When removing left and right edge adhesive, insert your pick no more than 3 mm to avoid damaging the wireless charging coil and interconnect cable.

Apply additional heat if necessary.

• Run the opening pick along the bottom edge of the device to loosen the adhesive.

Slide a pick along the back cover's perimeter to separate remaining adhesive.

• Avoid inserting the pick too deeply into the long left and right edges.

Remove the back cover.

• If having trouble, inspect the perimeter for remaining adhesive and use an opening pick to separate.

Power on your phone after reassembly and test all functions before sealing; power down completely before continuing work.

• Inspect rear cameras and wipe clean with a lint-free cloth if necessary.

Apply replacement adhesive to either the or the back cover. Use cutouts and contours for correct alignment. Follow applicable guide based on adhesive placement.

Use the point of a spudger or an opening pick to pry up and disconnect the wireless charging assembly press connector from its top edge.

• If using a spudger, insert the point carefully at the top edge to avoid damaging the connector.
• If having trouble with the spudger, try switching to an opening pick instead for better leverage.

Keep track of all removed screws for reinstallation.

• Remove the wireless charging and loudspeaker assembly using a Phillips screwdriver.
• Take note of the eleven 2.8 mm screws for correct reinstallation.

Removing the wireless charging coil separately can cause damage.

• Remove the wireless charging coil and loudspeaker together as a single assembly.
• Use angled tweezers to pry up the loudspeaker by its left edge notch.

When reassembling, press down firmly around the loudspeaker's perimeter to engage its clips securely.

Hold both sides of the wireless charging and loudspeaker assembly firmly.

Lift upwards with both hands to dislodge the assembly from its mounting points.

Pry only at the gold arrow marked on the board, as incorrect prying location may damage nearby components.

• Use a spudger to pry up and disconnect the battery press connector.

• Use the point of a spudger to carefully pry up the MAIN press connector on the USB-C port cable.
• Once prying, disconnect the cable from the logic board.

Use the point of a spudger to carefully pry up and release the SUB connector on the USB-C port cable from the sub board.

Remove the Phillips screwdriver and unscrew the two screws (each 2.3mm long) securing the USB-C port.

Avoid applying excessive heat which may damage components.

• Apply a heated iOpener to the USB-C port cable for two minutes to loosen the adhesive.
• Alternatively, use a hair dryer or heat gun to lightly heat the cable.

Avoid damaging the USB-C port cable — creasing or tearing can occur.

• Hold the sub board with one hand and use your other hand to carefully lift the USB-C port cable.
• Gently peel the USB-C port cable away from the sub board using your fingers.

Insert the tip of a spudger into one of the USB-C port screw holes.

• Pry the port away from the bottom edge of your phone.
• Alternate between screw holes as necessary until the port slides fully out.

Remove the USB-C port by gripping its cable.

Use the point of a spudger to carefully release the interconnect cable press connector marked with an "M" on the logic board.

Use the pointed end of a spudger to carefully pry up the interconnect cable press connector (marked S) from its connection on the sub board.

• Apply gentle pressure to avoid damaging the connector or surrounding components.
• Once disconnected, pull the interconnect cable free and set it aside.

Disconnect and remove the interconnect cable.

Use the point of a spudger to gently pry up the small extension board near the top left corner of the sub board.

If you encounter resistance, lightly heat the board with an iOpener, hair dryer, or heat gun, or apply one drop of high-concentration (>90%) isopropyl alcohol under the board to soften its adhesive.

Remove the 2.3mm screw using a Phillips screwdriver.

Remove the SIM card tray before proceeding.

• Pry up the sub board using a spudger, starting from the notch on its right edge.
• Grip the board by its edges and carefully lift it out.