Coming from a Samsung Galaxy S22 Ultra, this phone is definitely a huge upgrade. Holding the phone feels much more solid, yet lighter. Using the S Pen to write notes and memos is a lot easier, especially with the flat sides. The speed in which the phone starts up, open apps, and switches between tasks is very snappy and noticeable in day-to-day use. Daily Brief is useful for getting a quick glance in your day, without having to open up all of your apps (as someone who puts a lot of things on their calendar, this is super helpful).
Battery Life, when compared to the S22 Ultra is a night and day difference. On the S22 Ultra, I would get about 4-5 hours of screen on time, and about 6 hours of screen off time before having to plug it in again (15-20% remaining, so right around the 10-hour mark of taking it off the charger). On the S25 Ultra, I easily get 8-10 hours of screen on time, and about the same with screen off time, with around 30-40% remaining by the end of the day. On lighter days, the S25 Ultra lasts me 2-days before having to plug it in again.
One of the things I noticed was that the screen doesnt actually show reflections. It's like the screen has some kind of anti reflection built into it. Regardless, it's perfect when viewing the screen in daylight, or by a lamp in the event.
After running my S-20+ Ultra into the ground I pulled the trigger on the 25 Ultra 1TB edition and I am extremely glad I did. Easily the most proficient transfer of phone contents to the new one and its a stunning piece of tech. If you are thinking on it, do it. You won't regret it .
Like it, missing some of the pen features vs S23U, Samsung has amazing hardware, solid performer but battery life is always an issue. Miss the MicroSD slot but happy with the 512GB version so far.