Phone · Samsung · Galaxy S25 Ultra
Samsung Galaxy S25 Ultra Water Damage Repair
Water Damage Repair guide for the Samsung Galaxy S25 Ultra
Before you begin
Tools
- Precision screwdriver set
- Plastic opening tools
- Anti-static wrist strap
- Tweezers
- Magnifying glass or headlamp
- Heat gun or hair dryer
- Suction handle
- Soft-bristled toothbrush
Parts / materials
- 99% Isopropyl alcohol
- Soft microfiber cloth
- Cotton swabs
- Replacement back glass adhesive strips
Safety
- Disconnect the battery cable as soon as the back cover is removed to prevent electrical short circuits.
- Wear safety glasses when working with heated glass and high-concentration alcohol.
- Perform liquid cleaning with 99% Isopropyl alcohol in a well-ventilated area away from open flames.
Overview
Step-by-step
- 1
Turn off the device
1 minPower down the Galaxy S25 Ultra immediately if the screen is still functional. Do not connect a charger, as current will accelerate liquid corrosion.
- 2
Remove the SIM tray
1 minInsert a SIM eject tool into the hole near the bottom frame to pop out the SIM tray. Set the tray aside in a dry area.
- 3
Heat the back glass
3 minApply heat evenly around the outer edges of the rear panel using a heat gun for 2 to 3 minutes. The surface should be warm to the touch, softening the perimeter adhesive.
- 4
Slice the back panel adhesive
5 minAttach a suction handle near the bottom edge and pull up to create a small gap. Insert a plastic opening pick and slice through the adhesive along all four sides.
- 5
Lift off the back panel
2 minCarefully separate the rear glass from the aluminum frame. Lay the back panel flat on a clean surface.
- 6
Unscrew the upper midframe
4 minRemove the Phillips #00 screws securing the top plastic cover and wireless charging coil. Store the screws in a organizer tray to track their original locations.
- 7
Disconnect the battery cable
2 minPry up the wireless charging pad to expose the motherboard connectors. Use a plastic spudger to snap off the main battery connector immediately.
- 8
Unscrew and remove the speaker assembly
3 minRemove the remaining Phillips screws on the lower loudspeaker module. Pry the speaker module out of the bottom chassis.
- 9
Disconnect interconnect flex cables
3 minUse a spudger to gently pop off the display flex cable, mainboard daughterboard ribbon cables, and S-Pen sensor connector.
- 10
Extract the motherboard
4 minUnscrew the single retaining screw on the mainboard, then lift the board gently out of the frame. Avoid touching the camera lenses directly.
- 11
Clean board corrosion with alcohol
8 minApply 99% isopropyl alcohol to any green or white residue on the circuit board. Gently brush away mineral deposits using a soft-bristled toothbrush.
- 12
Dry components thoroughly
10 minWipe down the cleaned circuit boards with a microfiber cloth. Allow all components to air-dry completely in a well-ventilated space before starting reassembly.
After your Samsung Galaxy S25 Ultra water damage repair
Power the Galaxy S25 Ultra back on and test the water damage 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.
