Phone (3a) vs 12

Phone 1

Phone 2

Winner

Nothing Phone (3a)

Lifespan decides this one: the Phone (3a) is supported until Mar 2031 at $6.18 per month of safe use, while the 12 runs out in Jan 2029 ($16.04/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: Phone (3a) 75 · 12 72 — 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 (3a) $349

Safe to buy$6.18/mo

2025◆ Buy-by Mar 20292031

OnePlus 12 $500

Buy with care$16.04/mo

2024◆ Buy-by Jan 20272029

Category by category

Display

Phone (3a) 8012 100

The 12's screen is the better one — 6.82-inch ltpo amoled proxdr, qhd+ (3168×1440), 1–120hz, up to 4500 nits peak.

Performance

Phone (3a) 6412 92

The 12's Snapdragon 8 Gen 3 is simply the faster chip.

Camera

Phone (3a) 7912 79

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

Battery

Phone (3a) 8012 88

5,400mAh vs 5,000mAh — the 12 lasts longer between charges.

Software longevity

Phone (3a) 6712 37

The Phone (3a) is supported until Mar 2031 — 25 months longer than the 12.

Value

Phone (3a) 7512 72

Pound for pound, these two are equally good deals.

Full spec table

Spec	Phone (3a)	12
Price (street)	$349	$500
Display	6.77-inch AMOLED, 1080×2392 (FHD+), up to 120Hz, 3000 nits peak	6.82-inch LTPO AMOLED ProXDR, QHD+ (3168×1440), 1–120Hz, up to 4500 nits peak
Chipset	Snapdragon 7s Gen 3	Snapdragon 8 Gen 3
RAM	8GB/12GB	12GB/16GB
Storage	128GB/256GB	256GB/512GB
Battery	5,000 mAh	5,400 mAh
Charging	50W wired, no wireless	80W SUPERVOOC wired (50W in North America), 50W wireless
Rear cameras	50MP main, 50MP telephoto 2x, 8MP ultra-wide	50MP main, 48MP ultra-wide, 64MP periscope 3x
Dimensions	163.52 × 77.50 × 8.35 mm	164.3 × 75.8 × 9.2 mm
Weight	201 g	220 g
Water resistance	IP64	IP65
Supported until	Mar 2031	Jan 2029

Phone (3a) full verdict →12 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.