nullNo, your S25 Ultra cases and screen protectors won't fit the S26 Ultra. Samsung changed enough about the design that accessories aren't cross-compatible.
What changed:
The S26 Ultra has more rounded corners. Samsung did this for better ergonomics, but it means cases designed for the S25 Ultra's sharper corners won't sit right.
The camera layout shifted slightly. S25 Ultra case cutouts don't line up with the S26 Ultra's cameras. You'd have lenses blocked or cameras left unprotected.
The phone is thinner too—7.9mm versus 8.6mm. Even that small difference affects case fit. And Samsung switched from titanium to aluminum for the frame, changing the edge profile.
Screen protectors are also incompatible:
The screen dimensions and edge curvature are different. S25 Ultra protectors won't align correctly. The fingerprint sensor position may also be slightly different.
The good news:
Every major case brand had S26 Ultra accessories ready at launch. Spigen, OtterBox, Caseology, dbrand, Samsung's official cases—all available. Screen protectors too.
Samsung sells their own anti-reflective screen protector designed specifically for Gorilla Glass Armor 2.
If you're upgrading:
Plan to buy new accessories. Your old S25 Ultra cases and protectors won't work. The upside: plenty of options to choose from, and some S26 Ultra cases add MagSafe compatibility that older cases lacked.
Check Galaxy S26 Ultra case options across retailers.
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How we researched this
Where this comes from: this answer draws on the product's published specifications and the reviews ShopSavvy collected for it, alongside prices from ShopSavvy's price data.
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