PhoneLifespan

15 vs Redmi Turbo 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 Redmi Turbo 4 Pro runs out in Apr 2029 ($8.92/month). On a which-lasts-longer question, that's not a tie — it's the whole answer.

Value Score: 15 67 · Redmi Turbo 4 Pro 77 — 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 Redmi Turbo 4 Pro $305
Buy with care$8.92/mo
2025◆ Buy-by Apr 20272029

Category by category

Display
15 90Redmi Turbo 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 98Redmi Turbo 4 Pro 86

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

Camera
15 79Redmi Turbo 4 Pro 67

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

Battery
15 85Redmi Turbo 4 Pro 100

7,550mAh vs 5,240mAh — the Redmi Turbo 4 Pro lasts longer between charges.

Software longevity
15 53Redmi Turbo 4 Pro 41

The 15 is supported until Mar 2030 — 10 months longer than the Redmi Turbo 4 Pro.

Value
15 67Redmi Turbo 4 Pro 77

Overall value goes to the Redmi Turbo 4 Pro at $8.92 per month of safe use.

Full spec table
Spec15Redmi Turbo 4 Pro
Price (street)$750$305
Display6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+6.83-inch AMOLED, 1.5K, 120Hz, 3200 nits peak
ChipsetSnapdragon 8 EliteQualcomm Snapdragon 8s Gen 4 (4nm)
RAM12GB12GB/16GB
Storage256GB/512GB256GB/512GB/1TB
Battery5,240 mAh7,550 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 mm163.1 × 77.9 × 8.0 mm
Weight191 g219 g
Water resistanceIP68IP68/IP69
Supported untilMar 2030Apr 2029
15 full verdict →Redmi Turbo 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.