PhoneLifespan

iPhone 15 Pro Max vs 15

vs

It depends

Too close to call outright

These two are within 4 points overall, so it depends on you: keep phones for years → iPhone 15 Pro Max (supported until Sep 2030); want maximum speed → 15 (Snapdragon 8 Elite).

Value Score: iPhone 15 Pro Max 63 · 15 67 methodology

The lifespan decider

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

Apple iPhone 15 Pro Max $760
Safe to buy$14.81/mo
2023◆ Buy-by Sep 20282030
Xiaomi 15 $750
Safe to buy$16.81/mo
2025◆ Buy-by Mar 20282030

Category by category

Display
iPhone 15 Pro Max 8015 90

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
iPhone 15 Pro Max 8815 98

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

Camera
iPhone 15 Pro Max 7415 79

The 15 has the stronger camera system — same lens count, higher-grade sensors.

Battery
iPhone 15 Pro Max 6815 85

5,240mAh vs 4,422mAh — the 15 lasts longer between charges.

Software longevity
iPhone 15 Pro Max 6115 53

The iPhone 15 Pro Max is supported until Sep 2030 — 7 months longer than the 15.

Value
iPhone 15 Pro Max 6315 67

Overall value goes to the 15 at $16.81 per month of safe use.

Full spec table
SpeciPhone 15 Pro Max15
Price (street)$760$750
Display6.7-inch Super Retina XDR OLED, 120Hz ProMotion, Always-On, Dynamic Island, up to 2000 nits peak6.36-inch CrystalRes AMOLED, 2670×1200 (460 ppi), 1–120Hz LTPO, up to 3200 nits peak, Dolby Vision/HDR10+
ChipsetApple A17 ProSnapdragon 8 Elite
RAM8GB12GB
Storage256GB/512GB/1TB256GB/512GB
Battery4,422 mAh5,240 mAh
ChargingWired ~50% in 30 min with 20W+; MagSafe 15W wireless90W wired, 50W wireless
Rear cameras48MP main, 12MP ultra-wide, 12MP telephoto50MP main (Light Fusion 900, f/1.62), 50MP ultra-wide, 50MP telephoto (Leica 60mm floating)
Dimensions159.9 × 76.7 × 8.25 mm152.3 × 71.2 × 8.08 mm
Weight221 g191 g
Water resistanceIP68IP68
Supported untilSep 2030Mar 2030

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