PhoneLifespan

Phone (3) vs 15

vs

It depends

Too close to call outright

These two are within 3 points overall, so it depends on you: keep phones for years → Phone (3) (supported until Jul 2032); want maximum speed → 15 (Snapdragon 8 Elite).

Value Score: Phone (3) 70 · 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.

Nothing Phone (3) $799
Safe to buy$10.94/mo
2025◆ Buy-by Jul 20302032
Xiaomi 15 $750
Safe to buy$16.81/mo
2025◆ Buy-by Mar 20282030

Category by category

Display
Phone (3) 7015 90

The 15's screen is the better one — 6.36-inch crystalres amoled, 2670×1200 (460 ppi), 1–120hz ltpo, up to 3200 nits peak, dolby vision/hdr10+.

Performance
Phone (3) 8615 98

The 15's Snapdragon 8 Elite is simply the faster chip.

Camera
Phone (3) 7915 79

Camera systems are comparable on paper — pick by sample photos.

Battery
Phone (3) 8315 85

Battery capacities are close enough not to decide this.

Software longevity
Phone (3) 8715 53

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

Value
Phone (3) 7015 67

Pound for pound, these two are equally good deals.

Full spec table
SpecPhone (3)15
Price (street)$799$750
Display6.67-inch LTPS AMOLED, 120Hz, HDR10+, 960Hz PWM dimming6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+
ChipsetSnapdragon 8s Gen 4Snapdragon 8 Elite
RAM12GB/16GB12GB
Storage256GB/512GB256GB/512GB
Battery5,150 mAh5,240 mAh
Charging65W wired, 15W wireless90W wired, 50W wireless
Rear cameras50MP main, 50MP ultra-wide, 50MP periscope 3x50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)
Dimensions160.6 × 75.6 × 9.0 mm152.3 × 71.2 × 8.08 mm
Weight218 g191 g
Water resistanceIP68IP68
Supported untilJul 2032Mar 2030

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