Galaxy S26 vs 15 Ultra

Phone 1

Phone 2

Winner

Samsung Galaxy S26

Lifespan decides this one: the Galaxy S26 is supported until Mar 2033 at $9.90 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 S26 75 · 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 S26 $799

Safe to buy$9.90/mo

2026◆ Buy-by Mar 20312033

Xiaomi 15 Ultra $1350

Safe to buy$30.40/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Galaxy S26 9015 Ultra 100

The 15 Ultra's screen is the better one — 6.73-inch 2k (1440×3200) ltpo amoled, 1–120hz, up to 3200 nits peak.

Performance

Galaxy S26 10015 Ultra 98

Performance is a wash — same chip tier.

Camera

Galaxy S26 7915 Ultra 96

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

Battery

Galaxy S26 6615 Ultra 88

5,410mAh vs 4,300mAh — the 15 Ultra lasts longer between charges.

Software longevity

Galaxy S26 9615 Ultra 53

The Galaxy S26 is supported until Mar 2033 — 36 months longer than the 15 Ultra.

Value

Galaxy S26 7515 Ultra 65

Overall value goes to the Galaxy S26 at $9.90 per month of safe use.

Full spec table

Spec	Galaxy S26	15 Ultra
Price (street)	$799	$1350
Display	6.3-inch Dynamic LTPO AMOLED 2X, FHD+, 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 Gen 5 for Galaxy	Qualcomm Snapdragon 8 Elite (3nm)
RAM	12GB	16GB
Storage	256GB/512GB	512GB/1TB
Battery	4,300 mAh	5,410 mAh
Charging	25W wired, 15W wireless (Qi2.2 Ready)	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	149.6 × 71.7 × 7.2 mm	161.3 × 75.3 × 9.35 mm
Weight	167 g	226 g
Water resistance	IP68	IP68
Supported until	Mar 2033	Mar 2030

Galaxy S26 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.