Samsung Galaxy S25 Ultra Screen Replacement

A screen replacement is necessary if your Samsung Galaxy S25 Ultra suffers from shattered front glass, touch unresponsiveness, vertical colored lines, or complete black-screen failure after a drop. Replacing the display assembly restores full visibility, digitizer precision, and structural protection to the phone. Expect an intricate repair that requires heating tough factory waterproof adhesives, safely disconnecting fragile internal flex cables, and meticulously cleaning the frame bezel before mounting the new screen.

1. 1

   Power Down and Eject Components

   • Turn off the device completely, then remove the integrated S Pen stylus and the SIM card tray.
   • This prevents internal mechanical obstruction and protects the SIM reader pins during disassembly.
2. 2

   Heat and Remove Rear Glass

   • Warm the rear perimeter with a heat gun or heating mat set between 75°C and 80°C for approximately three minutes to soften the factory adhesive.
   • Place a suction handle near the bottom edge, pull upward to create a thin gap, and slide an opening pick around the entire perimeter to slice through the seal.
3. 3

   Detach Midframe and Wireless Charging Coil

   • Extract the Phillips #00 screws securing the upper motherboard shield and the wireless charging assembly.
   • Carefully unclip the plastic bracket and lift away the charging pad without creasing or tearing the integrated NFC flex ribbon.
4. 4

   Disconnect Battery and Internal Flex Cables

   • Use a non-conductive nylon spudger to disconnect the battery connector immediately, cutting off all electrical current to avoid short circuits.
   • Next, disconnect the display ribbon cable and the auxiliary interconnect cables from the mainboard and lower sub-board.
5. 5

   Soften Front Screen Adhesive

   • Lay the device face up and apply uniform heat around the front perimeter at 80°C for three to five minutes.
   • Always put on safety glasses during this step to protect your eyes from loose glass fragments under thermal stress.
6. 6

   Separate Damaged Display Panel

   • Mount a suction cup onto the screen, pull firmly to open a seam between the glass and the titanium frame, and slide a thin plastic pick inside.
   • Slice carefully along all four edges through the adhesive layer, guide the display flex cable out through the frame slot, and lift off the old screen.
7. 7

   Clean and Prepare the Chassis

   • Scrape away all lingering adhesive residue, tape fragments, and tiny glass particles along the mounting rim using a plastic scraper and 99% isopropyl alcohol.
   • Inspect the titanium frame borders for dents or bends, because any uneven surface can crack the replacement display during installation.
8. 8

   Dry Test the New Display

   • Thread the replacement screen ribbon through the frame opening, connect it to the motherboard, and plug the battery cable back in.
   • Power on the phone to test touchscreen responsiveness, digitizer accuracy across the entire surface, and color balance before installing any adhesive.
9. 9

   Adhere and Mount the Replacement Screen

   • Turn the smartphone off, disconnect the battery, and lay down fresh pre-cut perimeter adhesive strips onto the cleaned frame rim.
   • Thread the display flex through the chassis slot, align the new screen panel precisely within the frame borders, and press firmly along all edges with your fingers.
10. 10

    Reassemble Internals and Reseal Rear Cover

    • Reconnect the display and battery connectors, reinstall the wireless charging coil bracket, and tighten all Phillips screws.
    • Clean old adhesive from the back panel, apply a new rear gasket, align the rear glass, and clamp the device evenly for thirty minutes to establish a firm seal.