Galaxy S25+ vs 15 Ultra

Phone 1

Phone 2

Winner

Samsung Galaxy S25+

Lifespan decides this one: the Galaxy S25+ is supported until Feb 2032 at $12.55 per month of safe use, while the 15 Ultra runs out in Mar 2030 ($30.40/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Galaxy S25+ 73 · 15 Ultra 65 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

Samsung Galaxy S25+ $849

Safe to buy$12.55/mo

2025◆ Buy-by Feb 20302032

Xiaomi 15 Ultra $1350

Safe to buy$30.40/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Galaxy S25+ 10015 Ultra 100

Both displays are effectively the same class.

Performance

Galaxy S25+ 9815 Ultra 98

Performance is a wash — same chip tier.

Camera

Galaxy S25+ 7915 Ultra 96

The 15 Ultra has the stronger camera system (4 real rear lenses vs 3).

Battery

Galaxy S25+ 7815 Ultra 88

5,410mAh vs 4,900mAh — the 15 Ultra lasts longer between charges.

Software longevity

Galaxy S25+ 8115 Ultra 53

The Galaxy S25+ is supported until Feb 2032 — 23 months longer than the 15 Ultra.

Value

Galaxy S25+ 7315 Ultra 65

Overall value goes to the Galaxy S25+ at $12.55 per month of safe use.

Full spec table

Spec	Galaxy S25+	15 Ultra
Price (street)	$849	$1350
Display	6.7-inch Dynamic AMOLED 2X, QHD+ (3120×1440), 1–120Hz, up to 2600 nits	6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak
Chipset	Snapdragon 8 Elite for Galaxy	Qualcomm Snapdragon 8 Elite (3nm)
RAM	12GB	16GB
Storage	256GB/512GB	512GB/1TB
Battery	4,900 mAh	5,410 mAh
Charging	45W wired, 15W wireless	90W wired, 80W wireless
Rear cameras	50MP main, 12MP ultra-wide, 10MP telephoto 3x	50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto
Dimensions	158.4 × 75.8 × 7.3 mm	161.3 × 75.3 × 9.35 mm
Weight	190 g	226 g
Water resistance	IP68	IP68
Supported until	Feb 2032	Mar 2030

Galaxy S25+ full verdict →15 Ultra full verdict →Longevity master board →

Scores and verdicts are computed from our verified database — see exactly how. Specs from manufacturer documentation; prices reflect major US retailers.