Phone · Samsung · Galaxy S25 Ultra
Samsung Galaxy S25 Ultra Fingerprint Sensor Repair
Fingerprint Sensor Repair guide for the Samsung Galaxy S25 Ultra
Before you begin
Tools
- Precision screwdriver set
- Plastic opening picks
- Suction handle
- Heat gun or iOpener
- Spudger
- Tweezers
Parts / materials
- Replacement back cover adhesive
- Isopropyl alcohol (99%)
- Lint-free microfiber cloth
Safety
- Discharge the battery below 25% before disassembly to reduce fire risks.
- Wear protective safety glasses to guard against sharp glass fragments.
- Use non-conductive plastic tools around exposed electrical components.
Overview
Step-by-step
- 1
Power Off the Phone
1 minTurn off your Galaxy S25 Ultra completely and eject the SIM card tray using a SIM eject tool.
- 2
Heat the Back Glass
2 minApply a heat gun or iOpener around all four edges of the rear glass for 2 minutes to soften the frame adhesive.
- 3
Attach Suction Handle
1 minPlace a suction handle near the bottom edge of the rear glass cover and pull upward gently to form a slight seam.
- 4
Slice the Rear Adhesive
4 minInsert a plastic opening pick into the seam and carefully slide it around the perimeter to sever the adhesive layer.
- 5
Remove the Back Cover
1 minLift the back glass cover away from the chassis and set it face down on a clean surface.
- 6
Unscrew the Upper Shield
3 minRemove the Phillips screws holding down the top motherboard bracket and wireless charging coil assembly.
- 7
Detach Wireless Charging Assembly
2 minGently pry up the wireless charging coil shield using a plastic spudger and remove it from the device.
- 8
Disconnect the Battery
1 minUse the flat edge of a spudger to press up and disconnect the battery cable from the motherboard.
- 9
Disconnect the Fingerprint Cable
2 minUnplug the fingerprint sensor flex cable connector from its socket on the lower mainboard array.
- 10
Remove the Fingerprint Sensor
3 minUse precision tweezers and an opening pick to lift the adhesive-backed fingerprint sensor out of its frame recess.
- 11
Install the New Fingerprint Sensor
2 minAlign the replacement sensor module into the chassis frame recess and press gently to seat the adhesive.
- 12
Reconnect the Sensor Flex
1 minAlign and snap the fingerprint flex connector straight down onto the board socket until it clicks.
After your Samsung Galaxy S25 Ultra fingerprint sensor repair
Power the Galaxy S25 Ultra back on and test the fingerprint sensor repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Samsung Galaxy S25 Ultra job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Samsung Galaxy S25 Ultra repair context in the encyclopedia, or open related DIY guides.
