The S25, S25+ and S25 Ultra models were announced on January 22, 2025, at the Galaxy Unpacked event in San Jose, California and were released on February 7, 2025.

[12] The S25 Ultra also features rounded corners as part of its design, making it align more with the rest of the Galaxy S Series of smartphones.

Additionally, the S25 Ultra uses Gorilla Glass Armor 2 for its front display and rear panel for improved durability and reduced glare.

For South Korean model, Titanium Jetblack-colored Galaxy S25 Ultra with 1 TB storage comes with 16 GB of RAM.

Samsung has promised 7 years of OS and security updates to the S25 series of phones (meaning support may end in 2032).

With the release of the S25 Ultra, Samsung opted to remove the Bluetooth functionality in its trademark S Pen, a feature added to the stylus with the Galaxy Note 9 in 2018.

[28] Among the functions lost in are remote camera control, air actions, and several in-app features for programs such as PowerPoint or the native Gallery app.