Phone (3) vs 15 Ultra

Phone 1

Phone 2

Winner

Nothing Phone (3)

Lifespan decides this one: the Phone (3) is supported until Jul 2032 at $10.94 per month of safe use, while the 15 Ultra runs out in Mar 2030 ($30.26/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Phone (3) 70 · 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.

Nothing Phone (3) $799

Safe to buy$10.94/mo

2025◆ Buy-by Jul 20302032

Xiaomi 15 Ultra $1350

Safe to buy$30.26/mo

2025◆ Buy-by Mar 20282030

Category by category

Display

Phone (3) 7015 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

Phone (3) 8615 Ultra 98

The 15 Ultra's Qualcomm Snapdragon 8 Elite (3nm) is simply the faster chip.

Camera

Phone (3) 7915 Ultra 96

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

Battery

Phone (3) 8315 Ultra 88

5,410mAh vs 5,150mAh — the 15 Ultra lasts longer between charges.

Software longevity

Phone (3) 8715 Ultra 53

The Phone (3) is supported until Jul 2032 — 28 months longer than the 15 Ultra.

Value

Phone (3) 7015 Ultra 65

Overall value goes to the Phone (3) at $10.94 per month of safe use.

Full spec table

Spec	Phone (3)	15 Ultra
Price (street)	$799	$1350
Display	6.67-inch LTPS AMOLED, 120Hz, HDR10+, 960Hz PWM dimming	6.73-inch 2K (1440×3200) LTPO AMOLED, 1–120Hz, up to 3200 nits peak
Chipset	Snapdragon 8s Gen 4	Qualcomm Snapdragon 8 Elite (3nm)
RAM	12GB/16GB	16GB
Storage	256GB/512GB	512GB/1TB
Battery	5,150 mAh	5,410 mAh
Charging	65W wired, 15W wireless	90W wired, 80W wireless
Rear cameras	50MP main, 50MP ultra-wide, 50MP periscope 3x	50MP main, 50MP ultra-wide, 50MP telephoto (70mm floating), 200MP periscope telephoto
Dimensions	160.6 × 75.6 × 9.0 mm	161.3 × 75.3 × 9.35 mm
Weight	218 g	226 g
Water resistance	IP68	IP68
Supported until	Jul 2032	Mar 2030

Phone (3) 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.