Head to head
Samsung Galaxy S25 UltravsSamsung Galaxy S24 Ultra
The short answer
Choose the Galaxy S25 Ultra for Geekbench 6 CPU score. The Galaxy S24 Ultra wins no row by a gap you’d notice. Both cost £1,249 at UK RRP. The Galaxy S25 Ultra gets security updates for longer: until January 2032, against January 2031 for the Galaxy S24 Ultra.
- 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
- Released
- 2024-01-24endoflife.date, retrieved 2026-08-20
- Price
- £1,249Samsung Newsroom UK — Galaxy S24 series, retrieved 2026-08-20
- Security updates until
- 2031-01-24endoflife.date — Samsung mobile, retrieved 2026-08-20
1 win for Galaxy S25 Ultra0 wins for Galaxy S24 Ultra1 gap borderline3 differences you won’t noticeSame RRP
Verdict: Galaxy S25 Ultra ahead on 1 row, Galaxy S24 Ultra on none
On the named third-party sources, the Galaxy S25 Ultra wins on Geekbench 6 (CPU, multi-core) (8,869 against 6,170, both from Geekbench Browser). One gap is borderline, a difference most people would not notice: 3DMark Wild Life Extreme (5,827 against 4,531, both from 3DMark) for the Galaxy S25 Ultra. The differences in weight, display size and claimed video playback are below the thresholds you would notice. Both state the same refresh rate, peak brightness, storage (base), RAM, battery capacity, fast charging and wireless charging. The other 35 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 Ultra better than the Galaxy S24 Ultra?
On the figures, the Galaxy S25 Ultra is ahead wherever there is a gap you’d notice: Geekbench 6 (CPU, multi-core), 8,869 against 6,170 (both Geekbench Browser). The Galaxy S24 Ultra wins no row by such a gap. That is a count of rows, not an overall score.
Which has the better battery?
The Galaxy S25 Ultra is ahead on paper, but not by a gap you’d notice: claimed video playback, 31 h against 30 h (both Samsung UK). Both state 5,000 mAh for battery capacity (Samsung Newsroom UK).
Which is lighter?
The Galaxy S25 Ultra is lighter on paper, but not by a gap you’d notice: weight, 218 g against 232 g (both Samsung Newsroom UK).
Which has the brighter screen?
Neither: both state 2,600 nits for peak brightness (GSMArena and Samsung Newsroom UK).
Which gets updates for longer?
The Galaxy S25 Ultra gets security updates for longer: until January 2032, against January 2031 for the Galaxy S24 Ultra. Sources: dates from Samsung UK spec API and endoflife.date.
Which is cheaper?
Both cost £1,249 at UK RRP. Prices from Galaxy S25 Ultra: Samsung Newsroom UK; Galaxy S24 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.