PhoneLifespan

15 vs Poco F7 Ultra

vs

It depends

Too close to call outright

These two are within 4 points overall, so it depends on you: keep phones for years → Poco F7 Ultra (supported until Mar 2031); want maximum speed → 15 (Snapdragon 8 Elite).

Value Score: 15 67 · Poco F7 Ultra 71 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 F7 Ultra $699
Safe to buy$12.17/mo
2025◆ Buy-by Mar 20292031

Category by category

Display
15 90Poco F7 Ultra 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 98Poco F7 Ultra 98

Performance is a wash — same chip tier.

Camera
15 79Poco F7 Ultra 79

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

Battery
15 85Poco F7 Ultra 86

Battery capacities are close enough not to decide this.

Software longevity
15 53Poco F7 Ultra 68

The Poco F7 Ultra is supported until Mar 2031 — 13 months longer than the 15.

Value
15 67Poco F7 Ultra 71

Overall value goes to the Poco F7 Ultra at $12.17 per month of safe use.

Full spec table
Spec15Poco F7 Ultra
Price (street)$750$699
Display6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+6.67-inch AMOLED, 3200x1440 (WQHD+), 120Hz
ChipsetSnapdragon 8 EliteQualcomm Snapdragon 8 Elite
RAM12GB12GB/16GB
Storage256GB/512GB256GB/512GB
Battery5,240 mAh5,300 mAh
Charging90W wired, 50W wireless120W wired, 50W wireless
Rear cameras50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)50MP main, 50MP telephoto 2.5x, 32MP ultra-wide
Dimensions152.3 × 71.2 × 8.08 mm160.3 × 75 × 8.4 mm
Weight191 g212 g
Water resistanceIP68IP68
Supported untilMar 2030Mar 2031

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