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Samsung Galaxy S24 Ultra Fingerprint Sensor Repair

Fingerprint Sensor Repair guide for the Samsung Galaxy S24 Ultra

Moderate
~42 min
20 steps

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

# Samsung Galaxy S24 Ultra Fingerprint Sensor Repair Repair Guide Action-specific fingerprint sensor repair walkthrough for the Samsung Galaxy S24 Ultra. About 42 minutes across 20 steps. This DIY guide walks through fingerprint sensor repair on the Samsung Galaxy S24 Ultra (Galaxy S series phone). Before you open the device, confirm the exact model number on the Samsung settings screen or rear housing so your replacement part matches the Galaxy S24 Ultra specifically—not a similar Galaxy S sibling. Most DIY techs finish this Samsung Galaxy S24 Ultra fingerprint sensor repair in about 42 minutes when parts and tools are ready. Difficulty is rated intermediate for this model. Recommended tools for this Samsung Galaxy S24 Ultra job: Precision screwdriver set, Plastic opening tools, Anti-static wrist strap, Tweezers, Magnifying glass or headlamp, Heat gun or iOpener, Suction cup handle, Spudger. Parts and supplies: Replacement display assembly with ultrasonic fingerprint sensor, Precut rear glass adhesive, 99% Isopropyl alcohol, Lint-free cotton swabs. Power the Galaxy S24 Ultra off completely, remove SIMs/SD cards if present, and work on a clean, well-lit surface with a magnetic mat for screws. If a step feels wrong for your Samsung Galaxy S24 Ultra, stop and compare the connector layout to the photos in this guide. When you prefer a same-day pro repair in Seattle instead, LML Repair can handle fingerprint sensor repair for this model with tested parts and a workmanship warranty.

Step-by-step

  1. 1

    Power Off the Device

    1 min

    Turn off your Galaxy S24 Ultra completely by holding the Side key and Volume Down button, then tapping Power Off.

  2. 2

    Eject the SIM Tray and S Pen

    1 min

    Insert a SIM ejector tool into the hole on the bottom frame to pop out the tray, then remove the S Pen.

  3. 3

    Heat the Rear Glass Panel

    2 min

    Apply a heat gun or heated pad to the edges of the back glass for two minutes to soften the factory adhesive.

  4. 4

    Attach a Suction Handle

    2 min

    Place a suction cup near the bottom edge of the back glass and pull upward firmly to create a tiny seam.

  5. 5

    Insert an Opening Pick

    2 min

    Slide a thin plastic opening pick into the gap created between the glass back and the titanium frame.

  6. 6

    Slice the Edge Adhesive

    3 min

    Move the pick carefully along all four sides of the phone to slice through the remaining adhesive sealant.

  7. 7

    Remove the Rear Glass Cover

    2 min

    Lift the rear glass panel away from the frame and set it aside on a soft, clean surface.

  8. 8

    Unscrew the Motherboard Shield

    3 min

    Use a Phillips #00 screwdriver to remove the 13 screws holding the upper wireless charging coil and shield.

  9. 9

    Detach the Wireless Charging Coil

    2 min

    Gently unclip the wireless charging pad and NFC module from the top frame and lift it out.

  10. 10

    Disconnect the Battery Cable

    1 min

    Pry the main battery flex connector straight up from its motherboard socket using a plastic spudger.

  11. 11

    Unscrew the Lower Loudspeaker Housing

    2 min

    Remove the Phillips screws securing the speaker assembly at the bottom section of the phone frame.

  12. 12

    Remove the Loudspeaker Assembly

    2 min

    Lever the plastic speaker module up and out of the chassis using a flat plastic tool.

  13. 13

    Disconnect the Display and Fingerprint Flex Cable

    2 min

    Locate the main display and ultrasonic fingerprint sensor connector flex on the motherboard and disconnect it.

  14. 14

    Inspect Connector Terminals

    2 min

    Use a magnifying glass to check the motherboard port and flex pins for dirt, lint, or bent contacts.

  15. 15

    Clean the Flex Contacts

    2 min

    Dip a lint-free swab in 99% isopropyl alcohol and gently clean the fingerprint sensor connector contacts.

  16. 16

    Connect Replacement Sensor Flex

    3 min

    Align and press down the new display module's ultrasonic fingerprint flex connector onto the motherboard socket.

  17. 17

    Reconnect the Battery Cable

    1 min

    Snap the battery flex cable back into its motherboard receptacle until it clicks into place.

  18. 18

    Reinstall Internal Covers

    4 min

    Reposition the loudspeaker housing and upper wireless charging shield, securing all retained Phillips screws.

  19. 19

    Apply Rear Cover Adhesive

    3 min

    Clean the frame edges and lay down new precut adhesive strips along the rear perimeter.

  20. 20

    Press the Rear Glass Closed

    2 min

    Align 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.

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