The AI features on Samsung's Galaxy S25 phones uses both on-device and cloud-based AI models, including the touted AI assistant.

Samsung Galaxy S25 Ultra. If you're looking for a powerful smartphone with an AI companion that will make your entire day run smoothly, the Galaxy S25 Ultra is what you need. With

Try a single issue or save on a subscription Issues delivered straight to your door or device If you've been skeptical about the role artificial intelligence has to play on your smartphone — and there's plenty of reason to feel that way,

As it was presented, I expected the Galaxy S25+ to change the way I used my phone or at least feel AI aiding the user experience. However, the sales pitch doesn’t match reality, and while many of Samsung’s enhanced AI features sound great on paper, their implementation leaves much to be desired.

The Galaxy S25, S25+, and S25 Ultra all feature rounded corners and minuscule bezels, but the real standout is the “cross-app AI” agent.

Bizon praises the S25's Galaxy AI update as "a monumental step change in how a smartphone works for you. The best way I can describe is is like a PA in your pocket, it's bringing together seamlessly all the apps on your phone so you can perform really complex tasks with super simple commands."

The corners on the S25 Ultra are a bit more rounded, the edges are flatter, and the bezels seem to be slightly thinner. The S25 and S25+ models have the same screen size as the S24 models, at 6.2 and 6.

All the major updates at Samsung Galaxy Unpacked 2025, including first looks at the Galaxy S25 series and the latest in AI and wearables.