Samsung Galaxy S25 Ultra scores higher on the OH Rank (79 vs 78), winning 5 of 10 categories including Screen and Main Camera. Samsung Galaxy S25 Ultra is 5.8mm wider than Xiaomi 17. Xiaomi 17 is the more recent release, from Sep 27, 2025.
EDITORIAL: The S25 Ultra may be an incremental upgrade in hardware and camera tech but it is a world leader in AI functionality as Samsung turns to AI software to set itself apart from the competition. This is a phone with top performance, a full day of battery life, excellent photo and video results and 7 years of very stable OS package. Included is DeX - still the very best desktop replacement software there is. The screen, while not the brightest minimizes reflections and is more usable outdoors than any other. This year, Samsung decided to give us an Ultra with improved battery endurance and faster charging too. The lack of expandable memory is the only thing keeping the S25 Ultra back. The included stylus lost its Bluetooth but still works great.
EDITORIAL: Xiaomi is going after Apple this year with matching gen number and addition of Pro and Pro Max models. Plain 17 adds a massive battery upgrade (from 5500 to 7000mAh, 6330mAh in EU), faster processor and storage, better selfie (finally with AF) and Dolby Atmos certified speakers. It is a battery endurance beast, providing 42+ hours to even a heavy user. Cameras are similar to excellent Xiaomi 15: competent performer with some excellent results. Apple flattery extended to physical design too - while last year's model was one of the nicest to hold because of softly curved front and back glass panels, the 17 has palm-cutting sharp frame with flat front and back.
Both phones here were scored by me, using the same ten categories, with no ads, sponsorships, or manufacturer relationships — this comparison is as objective and honest as it gets.