PhoneLifespan

12 vs 15T Pro

vs

Winner

Xiaomi 15T Pro

Lifespan decides this one: the 15T Pro is supported until Sep 2030 at $12.65 per month of safe use, while the 12 runs out in Jan 2029 ($15.94/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 12 72 · 15T Pro 69 — methodology

The lifespan decider

When specs are close, support length decides it — this is what each phone costs per month of safe use.

OnePlus 12 $500
Buy with care$15.94/mo
2024◆ Buy-by Jan 20272029
Xiaomi 15T Pro $650
Safe to buy$12.65/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
12 10015T Pro 70

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
12 9215T Pro 94

Performance is a wash — same chip tier.

Camera
12 7915T Pro 79

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

Battery
12 8815T Pro 90

Battery capacities are close enough not to decide this.

Software longevity
12 3715T Pro 61

The 15T Pro is supported until Sep 2030 — 20 months longer than the 12.

Value
12 7215T Pro 69

Pound for pound, these two are equally good deals.

Full spec table
Spec1215T Pro
Price (street)$500$650
Display6.82-inch LTPO AMOLED ProXDR, QHD+ (3168×1440), 1–120Hz, up to 4500 nits peak6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetSnapdragon 8 Gen 3MediaTek Dimensity 9400+
RAM12GB/16GB12GB
Storage256GB/512GB256GB/512GB/1TB
Battery5,400 mAh5,500 mAh
Charging80W SUPERVOOC wired (50W in North America), 50W wireless90W wired, 50W wireless
Rear cameras50MP main, 48MP ultra-wide, 64MP periscope 3x50MP main, 50MP telephoto 5x periscope, 12MP ultra-wide
Dimensions164.3 × 75.8 × 9.2 mm162.7 × 77.9 × 8.0 mm
Weight220 g210 g
Water resistanceIP65IP68
Supported untilJan 2029Sep 2030
12 full verdict →15T Pro 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.