At a Samsung event in London last week, executives demoed the company’s new take on AI assistants. The headline news is that Gemini has effectively replaced Bixby as the default Galaxy phone AI, even kicking the latter out of the quick-launch home button.

At its Unpacked event last week, Samsung took the wraps off the Galaxy S25 lineup and spent a majority of the time talking about AI -- a trend in phone announcements these days. Echoing both Google and Apple, Samsung said it " built an AI OS from the ground up " when referring to its latest phone software, One UI 7 .

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.