PhoneLifespan

iQOO 12 vs 15T

vs

Winner

Xiaomi 15T

Lifespan decides this one: the 15T is supported until Sep 2030 at $9.73 per month of safe use, while the iQOO 12 runs out in Nov 2028 ($19.42/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: iQOO 12 66 · 15T 70 — methodology

The lifespan decider

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

Vivo iQOO 12 $560
Buy with care$19.42/mo
2023◆ Buy-by Nov 20262028
Xiaomi 15T $500
Safe to buy$9.73/mo
2025◆ Buy-by Sep 20282030

Category by category

Display
iQOO 12 9015T 70

The iQOO 12's screen is the better one — 6.78-inch ltpo amoled, 2800x1260, 144hz, up to 3000 nits peak.

Performance
iQOO 12 9215T 78

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

Camera
iQOO 12 7915T 79

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

Battery
iQOO 12 8015T 90

5,500mAh vs 5,000mAh — the 15T lasts longer between charges.

Software longevity
iQOO 12 3415T 61

The 15T is supported until Sep 2030 — 23 months longer than the iQOO 12.

Value
iQOO 12 6615T 70

Overall value goes to the 15T at $9.73 per month of safe use.

Full spec table
SpeciQOO 1215T
Price (street)$560$500
Display6.78-inch LTPO AMOLED, 2800x1260, 144Hz, up to 3000 nits peak6.83-inch AMOLED, 2772x1280, 144Hz
ChipsetQualcomm Snapdragon 8 Gen 3MediaTek Dimensity 8400-Ultra
RAM12GB/16GB12GB
Storage256GB/512GB256GB/512GB
Battery5,000 mAh5,500 mAh
Charging120W wired67W wired
Rear cameras50MP main, 50MP ultra-wide, 64MP telephoto 3x periscope50MP main, 50MP telephoto 2x, 12MP ultra-wide
Dimensions163.2 × 75.9 × 8.1 mm163.2 × 78.0 × 7.5 mm
Weight199 g194 g
Water resistanceIP64IP68
Supported untilNov 2028Sep 2030
iQOO 12 full verdict →15T 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.