PhoneLifespan

15 vs Civi 4 Pro

vs

Winner

Xiaomi 15

Lifespan decides this one: the 15 is supported until Mar 2030 at $16.87 per month of safe use, while the Civi 4 Pro runs out in Mar 2028 ($20.38/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15 67 · Civi 4 Pro 65 — methodology

The lifespan decider

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

Xiaomi 15 $750
Safe to buy$16.87/mo
2025◆ Buy-by Mar 20282030
Xiaomi Civi 4 Pro $430
Buy with care$20.38/mo
2024◆ Buy-by Mar 20262028

Category by category

Display
15 90Civi 4 Pro 80

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
15 98Civi 4 Pro 82

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

Camera
15 79Civi 4 Pro 79

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

Battery
15 85Civi 4 Pro 74

5,240mAh vs 4,700mAh — the 15 lasts longer between charges.

Software longevity
15 53Civi 4 Pro 25

The 15 is supported until Mar 2030 — 23 months longer than the Civi 4 Pro.

Value
15 67Civi 4 Pro 65

Pound for pound, these two are equally good deals.

Full spec table
Spec15Civi 4 Pro
Price (street)$750$430
Display6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+6.55-inch AMOLED, 1.5K, 120Hz, 3000 nits peak
ChipsetSnapdragon 8 EliteQualcomm Snapdragon 8s Gen 3 (4nm)
RAM12GB12GB/16GB
Storage256GB/512GB256GB/512GB
Battery5,240 mAh4,700 mAh
Charging90W wired, 50W wireless67W wired
Rear cameras50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)50MP main, 50MP telephoto, 12MP ultra-wide
Dimensions152.3 × 71.2 × 8.08 mm157.2 × 72.8 × 7.5 mm
Weight191 g179 g
Water resistanceIP68IP54
Supported untilMar 2030Mar 2028
15 full verdict →Civi 4 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.