[This review was collected as part of a promotion.] Let’s get the obvious out of the way first: the Galaxy S25 Ultra is a technological titan. It has a display so sharp it feels like a window, a battery that laughs in the face of a 16-hour workday, and a camera system that turns even my mediocre photography skills into gallery-worthy shots. But after spending months with this device, I’ve realized that the hardware—while stunning—is simply the stage. The main character is Galaxy AI.