PhoneLifespan

15 vs Poco X7 Pro

vs

Winner

Xiaomi 15

Lifespan decides this one: the 15 is supported until Mar 2030 at $16.81 per month of safe use, while the Poco X7 Pro runs out in Jan 2029 ($9.38/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15 67 · Poco X7 Pro 75 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$16.81/mo
2025◆ Buy-by Mar 20282030
Xiaomi Poco X7 Pro $290
Buy with care$9.38/mo
2025◆ Buy-by Jan 20272029

Category by category

Display
15 90Poco X7 Pro 70

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 98Poco X7 Pro 78

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

Camera
15 79Poco X7 Pro 67

The 15 has the stronger camera system (3 real rear lenses vs 2).

Battery
15 85Poco X7 Pro 100

6,000mAh vs 5,240mAh — the Poco X7 Pro lasts longer between charges.

Software longevity
15 53Poco X7 Pro 37

The 15 is supported until Mar 2030 — 14 months longer than the Poco X7 Pro.

Value
15 67Poco X7 Pro 75

Overall value goes to the Poco X7 Pro at $9.38 per month of safe use.

Full spec table
Spec15Poco X7 Pro
Price (street)$750$290
Display6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+6.67-inch AMOLED, 2712x1220 (1.5K), 120Hz
ChipsetSnapdragon 8 EliteMediaTek Dimensity 8400 Ultra
RAM12GB8GB/12GB
Storage256GB/512GB256GB/512GB
Battery5,240 mAh6,000 mAh
Charging90W wired, 50W wireless90W wired
Rear cameras50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)50MP main, 8MP ultra-wide
Dimensions152.3 × 71.2 × 8.08 mm160.8 × 75.7 × 8.3 mm
Weight191 g195 g
Water resistanceIP68IP68
Supported untilMar 2030Jan 2029

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