Phone · Samsung · Galaxy S24 Ultra
Samsung Galaxy S24 Ultra Fingerprint Sensor Repair
Fingerprint Sensor Repair guide for the Samsung Galaxy S24 Ultra
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- Magnifying glass or headlamp
- Heat gun or iOpener
- Suction cup handle
- Spudger
Parts / materials
- Replacement display assembly with ultrasonic fingerprint sensor
- Precut rear glass adhesive
- 99% Isopropyl alcohol
- Lint-free cotton swabs
Safety
- Wear safety glasses to protect against potential glass splinters.
- Always disconnect the battery before touching internal electronic flex cables.
- Do not bend, puncture, or apply direct heat to the lithium-ion battery.
Overview
Step-by-step
- 1
Power Off the Device
1 minTurn off your Galaxy S24 Ultra completely by holding the Side key and Volume Down button, then tapping Power Off.
- 2
Eject the SIM Tray and S Pen
1 minInsert a SIM ejector tool into the hole on the bottom frame to pop out the tray, then remove the S Pen.
- 3
Heat the Rear Glass Panel
2 minApply a heat gun or heated pad to the edges of the back glass for two minutes to soften the factory adhesive.
- 4
Attach a Suction Handle
2 minPlace a suction cup near the bottom edge of the back glass and pull upward firmly to create a tiny seam.
- 5
Insert an Opening Pick
2 minSlide a thin plastic opening pick into the gap created between the glass back and the titanium frame.
- 6
Slice the Edge Adhesive
3 minMove the pick carefully along all four sides of the phone to slice through the remaining adhesive sealant.
- 7
Remove the Rear Glass Cover
2 minLift the rear glass panel away from the frame and set it aside on a soft, clean surface.
- 8
Unscrew the Motherboard Shield
3 minUse a Phillips #00 screwdriver to remove the 13 screws holding the upper wireless charging coil and shield.
- 9
Detach the Wireless Charging Coil
2 minGently unclip the wireless charging pad and NFC module from the top frame and lift it out.
- 10
Disconnect the Battery Cable
1 minPry the main battery flex connector straight up from its motherboard socket using a plastic spudger.
- 11
Unscrew the Lower Loudspeaker Housing
2 minRemove the Phillips screws securing the speaker assembly at the bottom section of the phone frame.
- 12
Remove the Loudspeaker Assembly
2 minLever the plastic speaker module up and out of the chassis using a flat plastic tool.
- 13
Disconnect the Display and Fingerprint Flex Cable
2 minLocate the main display and ultrasonic fingerprint sensor connector flex on the motherboard and disconnect it.
- 14
Inspect Connector Terminals
2 minUse a magnifying glass to check the motherboard port and flex pins for dirt, lint, or bent contacts.
- 15
Clean the Flex Contacts
2 minDip a lint-free swab in 99% isopropyl alcohol and gently clean the fingerprint sensor connector contacts.
- 16
Connect Replacement Sensor Flex
3 minAlign and press down the new display module's ultrasonic fingerprint flex connector onto the motherboard socket.
- 17
Reconnect the Battery Cable
1 minSnap the battery flex cable back into its motherboard receptacle until it clicks into place.
- 18
Reinstall Internal Covers
4 minReposition the loudspeaker housing and upper wireless charging shield, securing all retained Phillips screws.
- 19
Apply Rear Cover Adhesive
3 minClean the frame edges and lay down new precut adhesive strips along the rear perimeter.
- 20
Press the Rear Glass Closed
2 minAlign the back glass onto the chassis and press firmly around all edges to form a tight seal.
After your Samsung Galaxy S24 Ultra fingerprint sensor repair
Power the Galaxy S24 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 S24 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 S24 Ultra repair context in the encyclopedia, or open related DIY guides.

