Head to head
Samsung Galaxy S25vsSamsung Galaxy S25 Ultra
The short answer
Choose the Galaxy S25 Ultra for the larger screen, more base storage, battery capacity and battery life per charge. Choose the Galaxy S25 for lower weight. The Galaxy S25 is £450 cheaper at UK RRP (£799 against £1,249). Both get security updates until January 2032.
- Released
- 2025-02-03endoflife.date, retrieved 2026-08-20
- Price
- £799Samsung Newsroom UK — Galaxy S25 series, retrieved 2026-08-20
- Security updates until
- 2032-01-31Samsung UK spec API — Galaxy S25, retrieved 2026-09-22
- Released
- 2025-02-03endoflife.date, retrieved 2026-08-20
- Price
- £1,249Samsung Newsroom UK — Galaxy S25 series, retrieved 2026-08-20
- Security updates until
- 2032-01-31Samsung UK spec API — Galaxy S25 Ultra, retrieved 2026-09-22
1 win for Galaxy S254 wins for Galaxy S25 Ultra2 gaps borderline2 differences you won’t notice£450 apart at RRP
Verdict: Galaxy S25 Ultra ahead on 4 rows, Galaxy S25 on 1 row
On the makers’ published figures, the Galaxy S25 wins on weight (162 g against 218 g); the Galaxy S25 Ultra wins on display size (6.9 in against 6.2 in), storage (base) (256 GB against 128 GB), battery capacity (5,000 mAh against 4,000 mAh) and battery per charge (44.9 h against 37.27 h). 2 gaps are borderline, differences most people would not notice: claimed video playback (31 h against 29 h) for the Galaxy S25 Ultra and fast charging (45 W from the maker against 25 W from GSMArena) for the Galaxy S25 Ultra. The differences in Geekbench 6 (CPU, multi-core) and 3DMark Wild Life Extreme are below the thresholds you would notice. Both state the same refresh rate, peak brightness, RAM, battery lifespan and wireless charging. The other 33 rows have no threshold or no direction to judge by, so nobody wins them.
True to scale
Outlines from each maker’s published dimensions, drawn to scale. Corner rounding is our drawing convention, not a measurement.
Specifications
A win is marked only where the figures can be ranked and the gap is one you could notice. A row the site has no threshold for says whether the two differ, and that it is not ranking them. = marks the same figure on both, ≠ not ranked a difference with no ranking. Every figure carries its source.
Body
Display
Platform
Memory
Camera
Battery
Connectivity
Benchmarks
4 attributes neither phone has a sourced figure for
Typical brightness · HDR peak brightness · OS versions supported · Google Mobile Services. Rows appear as sources are cited — a gap in our data, not a statement about either phone.
Questions
Is the Galaxy S25 better than the Galaxy S25 Ultra?
On the figures, neither is better overall: the Galaxy S25 wins on weight, 162 g against 218 g (both Samsung Newsroom UK); the Galaxy S25 Ultra wins on display size, 6.9 in against 6.2 in (both Samsung Newsroom UK), storage (base), 256 GB against 128 GB (both Samsung Newsroom UK), battery capacity, 5,000 mAh against 4,000 mAh (both Samsung Newsroom UK) and battery per charge, 44.9 h against 37.27 h (both EU energy label). Every other row is borderline, too close to notice, or not ranked.
Which has the better battery?
The Galaxy S25 Ultra, by a gap you’d notice: battery per charge, 44.9 h against 37.27 h (both EU energy label). The Galaxy S25 Ultra is ahead, narrowly: claimed video playback, 31 h against 29 h (both Samsung UK), a borderline gap most people would not notice. The Galaxy S25 Ultra, by a gap you’d notice: battery capacity, 5,000 mAh against 4,000 mAh (both Samsung Newsroom UK).
Which is lighter?
The Galaxy S25, by a gap you’d notice: weight, 162 g against 218 g (both Samsung Newsroom UK).
Which has the brighter screen?
Neither: both state 2,600 nits for peak brightness (GSMArena).
Which gets updates for longer?
Both get security updates until January 2032. Sources: dates from Samsung UK spec API.
Which is cheaper?
The Galaxy S25 is £450 cheaper at UK RRP (£799 against £1,249). Prices from Galaxy S25: Samsung Newsroom UK; Galaxy S25 Ultra: Samsung Newsroom UK.
Other comparisons
The pairs a buyer of either phone would also weigh. Any two phones in the catalogue can be compared from the chooser.