Phone · Samsung · Galaxy S25 Plus
Samsung Galaxy S25 Plus Fingerprint Sensor Repair
Fingerprint Sensor Repair guide for the Samsung Galaxy S25 Plus
Before you begin
Tools
- Heat gun or iOpener
- Suction handle
- Plastic opening picks
- Phillips #00 screwdriver
- Spudger
- Tweezers
Parts / materials
- Replacement ultrasonic fingerprint sensor flex
- Pre-cut back cover adhesive sticker
- 90%+ Isopropyl alcohol
Safety
- Power off the device completely before performing any internal work.
- Wear safety glasses to protect against potential glass fragments.
- Do not puncture or pry against the lithium-ion battery directly.
Overview
Step-by-step
- 1
Heat the back cover
2 minApply a heated iOpener or heat gun around the rear glass edges for two minutes to soften the adhesive.
- 2
Attach a suction cup
1 minPlace a suction handle near the bottom edge of the back cover and pull upward firmly to create a small gap.
- 3
Insert an opening pick
1 minSlide a plastic opening pick into the gap under the back glass to prevent the adhesive from re-sealing.
- 4
Slice the rear adhesive
4 minSlide the pick carefully around all four sides of the phone to cut through the perimeter adhesive sealant.
- 5
Remove the back cover
1 minLift the rear glass off the frame completely and set it on a clean surface.
- 6
Unscrew the wireless coil shield
3 minUse a Phillips #00 screwdriver to remove the screws securing the upper wireless charging coil armor.
- 7
Disconnect the wireless coil
2 minPry up the press connector for the wireless coil and carefully peel the antenna assembly off the battery.
- 8
Disconnect the battery flex
1 minUse a plastic spudger to pry the battery cable straight up from its motherboard socket to cut power.
- 9
Unscrew the lower speaker assembly
2 minRemove the Phillips screws holding the loudspeaker cover in place and lift it out of the lower chassis.
- 10
Disconnect the fingerprint sensor cable
1 minLocate the ultrasonic fingerprint sensor flex connector on the mainboard and gently pry it up with a spudger.
- 11
Unstick the fingerprint flex
3 minApply a drop of isopropyl alcohol around the flex cable adhesive and use tweezers to unthread the ribbon cable.
- 12
Replace the fingerprint sensor flex
2 minAlign the new fingerprint sensor flex module into place on the frame bracket and press down to adhere.
- 13
Reconnect the sensor cable
1 minAlign the flex connector precisely over the motherboard socket and press straight down until it clicks into place.
- 14
Reassemble the internal shields
4 minReconnect the battery, replace the lower speaker and wireless charging coil, then secure all Phillips screws.
After your Samsung Galaxy S25 Plus fingerprint sensor repair
Power the Galaxy S25 Plus 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 Plus 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 Plus repair context in the encyclopedia, or open related DIY guides.
