Samsung Galaxy S25 Ultra USB-C Board Replacement
Follow this guide to replace the USB-C board (aka daughterboard or sub board) in your Samsung Galaxy S25 Ultra smartphone.
Before starting this repair, try cleaning the port and see if it fixes your problem.
Note: You'll need replacement back cover adhesive to complete this repair.
Note: The USB-C port and SIM reader are soldered to the daughterboard, so replacing either of these parts requires replacing the entire board.
If your device isn't charging properly, disconnects unexpectedly, or your USB-C cable feels loose when plugged in, you may need to replace the USB-C board.
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Werkzeuge
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Hair Dryer Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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Heat Gun Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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iFixit Opening Picks (Set of 6) Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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iOpener Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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Phillips #00 Screwdriver Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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SIM Card Eject Tool Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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Spudger Verfügbarkeit: Bestellbar Im Shop ansehen →
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Suction Handle Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
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Tweezers Verfügbarkeit: Externe Bezugsquelle Bei iFixit kaufen →
Anleitung
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Safety precautions
Unplug all cables from your phone.
Completely power off your phone by holding the side key and volume down button and selecting Power off.
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Remove the SIM card tray
Firmly press a SIM eject tool, bit, or straightened paper clip into the SIM card tray hole on the bottom edge of your phone until the tray ejects.
Remove the SIM card tray.
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Cracked glass preparation
Apply strips of packing tape to the cracked glass until it's completely covered—this will help keep the glass contained and allow the suction cup to stick.
Make sure there's a single strip (not overlapping) of tape across the bottom edge, big enough for a suction cup to fit on.
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Heat the back cover
Heat an iOpener and lay it on the bottom edge of the back cover for two minutes.
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Adhesive information
The cover is secured with adhesive around the perimeter of the frame. Use this picture as a reference while you separate the adhesive.
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Apply a suction handle
Apply a suction handle to the center of the back cover's bottom edge, as close to the edge as possible.
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Insert an opening pick
Pull up on the suction handle with strong, steady force until a gap forms between the back glass and frame.
Insert the tip of an opening pick into the gap.
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Separate the bottom edge adhesive
Slide the opening pick along the bottom edge to separate the adhesive.
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Separate the right edge adhesive
Slide the opening pick around the bottom right corner and up the right edge to separate the adhesive.
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Separate the top edge adhesive
Slide the opening pick around the top right corner and along the top edge to separate the adhesive.
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Separate the left edge adhesive
Slide the opening pick around the top left corner and down the left edge to separate the adhesive.
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Remove the back cover
Use the suction handle to lift and remove the back cover.
This is a good point to power on your phone and test all functions before sealing it up. Be sure to power your phone back down completely before you continue working.
Check your rear cameras for any smudges and gently wipe them with a clean, lint–free cloth if necessary.
Your replacement back cover adhesive will be applied to either the frame or the back cover. Use cutouts and contours to see where it lines up best. If it matches the back cover, follow this guide. If it matches the frame, use this guide.
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Disconnect the wireless charging coil
Use the point of a spudger to pry up and disconnect the wireless charging coil press connector.
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Remove the wireless charging and loudspeaker screws
Use a Phillips screwdriver to remove the ten screws securing the wireless charging and loudspeaker assembly:
Four 3.5 mm‑long screws securing the wireless charging coil
Six 3.5 mm‑long screws securing the loudspeaker
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Heat the wireless charging adhesive
Two tabs on the right side of the wireless charging coil are secured with mild adhesive.
Heat an iOpener and lay it on the tabs for one minute to soften the adhesive.
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Detach the wireless charging coil tabs
Gently slide the point of a spudger under the top edge of the upper tab and lift slowly to separate it.
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Detach the wireless charging coil tape
Repeat the previous step to separate the lower tab, starting at the bottom edge.
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Pry up the loudspeaker
Use the point of a spudger to pry up the right side of the loudspeaker and unclip it.
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Remove the wireless charging and loudspeaker assembly
Use two hands to remove the wireless charging and loudspeaker assembly.
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Disconnect the battery
Use the point of a spudger to pry up and disconnect the battery press connector.
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Disconnect the USB-C board
Use the point of a spudger to pry up and disconnect the two press connectors on the USB‑C board's top edge.
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Remove the USB-C board screws
Use a Phillips screwdriver to remove the three 3.4 mm‑long screws securing the USB-C board.
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Remove the USB-C board
Insert the point of a spudger in the gap under the top right corner of the USB-C board and gently lift until it unclips.
Remove the board, making sure the cables don't get snagged.
Insert the USB‑C board at a slight downward angle, guiding the port into its recess. Make sure the push connectors on the bottom edge are properly seated against the frame.
With the board in place, press down firmly on the center of the top edge to clip the board in place.
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Abschluss
Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before you install it.
To reassemble your device, follow these instructions in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers Community for troubleshooting help.