Galaxy S26 Ultra vs 15

Phone 1

Phone 2

Winner

Samsung Galaxy S26 Ultra

The Galaxy S26 Ultra wins this one, taking software longevity and camera decisively. Against the 15 it's also the sounder buy at $13.62 per month of safe use.

Value Score: Galaxy S26 Ultra 77 · 15 67 — 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 Ultra $1099

Safe to buy$13.62/mo

2026◆ Buy-by Mar 20312033

Xiaomi 15 $750

Safe to buy$16.89/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Galaxy S26 Ultra 10015 90

The Galaxy S26 Ultra's screen is the better one — 6.9-inch dynamic ltpo amoled 2x, qhd+, 1–120hz, up to 2600 nits, with anti-reflective privacy display.

Performance

Galaxy S26 Ultra 10015 98

Performance is a wash — same chip tier.

Camera

Galaxy S26 Ultra 9615 79

The Galaxy S26 Ultra has the stronger camera system (4 real rear lenses vs 3).

Battery

Galaxy S26 Ultra 8015 85

5,240mAh vs 5,000mAh — the 15 lasts longer between charges.

Software longevity

Galaxy S26 Ultra 9615 53

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

Value

Galaxy S26 Ultra 7715 67

Overall value goes to the Galaxy S26 Ultra at $13.62 per month of safe use.

Full spec table

Spec	Galaxy S26 Ultra	15
Price (street)	$1099	$750
Display	6.9-inch Dynamic LTPO AMOLED 2X, QHD+, 1–120Hz, up to 2600 nits, with anti-reflective Privacy Display	6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+
Chipset	Snapdragon 8 Elite Gen 5 for Galaxy	Snapdragon 8 Elite
RAM	12GB	12GB
Storage	256GB/512GB/1TB	256GB/512GB
Battery	5,000 mAh	5,240 mAh
Charging	60W wired, 25W wireless	90W wired, 50W wireless
Rear cameras	200MP main, 50MP ultra-wide, 10MP telephoto 3x, 50MP telephoto 5x periscope	50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)
Dimensions	163.6 × 78.1 × 7.9 mm	152.3 × 71.2 × 8.08 mm
Weight	214 g	191 g
Water resistance	IP68	IP68
Supported until	Mar 2033	Mar 2030

Galaxy S26 Ultra full verdict →15 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.