Phone · Samsung · Galaxy S25
Samsung Galaxy S25 Fingerprint Sensor Repair
Fingerprint Sensor Repair guide for the Samsung Galaxy S25
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup tool
- Plastic prying tools
- Spudger tool
- Precision screwdriver set (Phillips #000)
- Tweezers
Parts / materials
- Isopropyl alcohol (99%)
- Replacement back glass adhesive strips
- Replacement Samsung Galaxy S25 fingerprint sensor module
Safety
- Wear eye protection to safeguard against glass fragments if the back panel cracks.
- Power off the device completely before beginning disassembly.
- Do not puncture or bend the internal lithium-ion battery during repair.
Overview
Step-by-step
- 1
Power off the Galaxy S25
1 minPress and hold the side button and volume down button simultaneously, then tap Power Off on the screen.
- 2
Heat the rear glass
3 minApply a heat gun or hair dryer around the outer edges of the back cover for 2 minutes to soften the internal adhesive.
- 3
Attach the suction cup
2 minPlace a suction cup near the bottom edge of the back glass and pull up firmly to create a small gap.
- 4
Slice the glass adhesive
4 minInsert a plastic opening pick into the gap and carefully slide it along the perimeter to slice through the adhesive.
- 5
Lift off the rear glass
2 minGently lift the rear glass off the frame and set it aside on a clean workspace mat.
- 6
Remove the midframe screws
3 minUse a Phillips #000 screwdriver to remove the 13 screws securing the upper motherboard bracket and wireless charging pad.
- 7
Detach the wireless charging pad
2 minUse a spudger to gently pry up and remove the wireless charging coil and midframe shield.
- 8
Disconnect the battery flex
1 minPry the battery connector straight up from the motherboard using a plastic spudger to prevent short circuits.
- 9
Remove the lower speaker housing
3 minUnscrew the bottom speaker assembly and lift it out of the chassis to expose the lower flex connections.
- 10
Disconnect the fingerprint sensor flex
2 minLocate the dedicated fingerprint sensor ribbon cable on the lower junction and pop it off with a spudger.
- 11
Pry up the fingerprint sensor module
4 minApply a drop of isopropyl alcohol around the sensor recess, then use fine tweezers to lift out the sensor.
- 12
Position the new fingerprint sensor
3 minPlace the new ultrasonic fingerprint sensor precisely into the frame recess and press down lightly to seat it.
- 13
Reconnect the sensor flex
2 minAlign and press the fingerprint sensor flex connector directly onto the socket until it clicks into place.
- 14
Reinstall the lower speaker assembly
3 minSet the bottom loudspeaker back in place and secure it with its original screws.
- 15
Reconnect the battery terminal
1 minPress the battery flex cable onto the motherboard terminal to restore power.
- 16
Reseal the rear glass
5 minApply new pre-cut adhesive strips to the rear frame, align the back cover, and press firmly to seal.
After your Samsung Galaxy S25 fingerprint sensor repair
Power the Galaxy S25 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 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 repair context in the encyclopedia, or open related DIY guides.
