DB LabsThe Quick Verdict
The biggest change: iPhone 17 Pro starts at 256 GB (up from 128 GB on iPhone 16 Pro), doubling the base storage without increasing the entry price. The upgrade tiers are nearly identical above the base — 512 GB and 1 TB. iPhone 17 Pro Max adds a 2 TB option exclusive to the Max model. If you're shopping for a new iPhone, the 17 Pro base model is a strictly better deal. If you already own iPhone 16 Pro with 256 GB or more, don't upgrade for storage alone — the improvements are minor.
Storage Tier Comparison
| Tier | iPhone 16 Pro | iPhone 17 Pro | iPhone 17 Pro Max |
|---|---|---|---|
| Base | 128 GB ($999) | 256 GB ($999) | 256 GB ($1,199) |
| Mid | 256 GB ($1,099) | 512 GB ($1,199) | 512 GB ($1,399) |
| High | 512 GB ($1,299) | 1 TB ($1,399) | 1 TB ($1,599) |
| Max | 1 TB ($1,499) | — | 2 TB ($1,999) |
The Doubled Base Tier
Apple's decision to double base storage on iPhone 17 Pro was the biggest surprise of the launch. The $999 starting price stayed the same but you now get 256 GB instead of 128 GB — effectively a $100 upgrade at no cost. This is a response to years of criticism that 128 GB isn't enough for a $1,000 flagship in 2026 with ProRAW, ProRes, and Apple Intelligence requirements.
Photo and Video File Sizes
Both phones use the same 48MP Fusion camera with identical file sizes:
- HEIC photo: 2-3 MB
- JPEG photo: 3-5 MB
- ProRAW: 50-75 MB
- 4K 30fps video: ~200 MB/min
- 4K 60fps video: ~400 MB/min
- ProRes 4K: ~6 GB/min
- iPhone 17 Pro exclusive: 4K 120fps slow-motion (~1 GB/min)
Apple Intelligence Storage
Both models support Apple Intelligence, which reserves 4-7 GB for on-device ML models. This effectively reduces usable storage by that amount — 256 GB iPhone 17 Pro users have about 248 GB usable. This is the same on iPhone 16 Pro, so it's not a differentiator.
External Recording Support
Both models support ProRes recording to external USB-C SSD. This is critical for pro videographers because 4K ProRes at 6 GB/min fills even 1 TB in under 3 hours. The USB-C port works identically on both generations.
Upgrade Math
Trade-in iPhone 16 Pro 128 GB nets roughly $600 (varies by condition). iPhone 17 Pro 256 GB costs $999. Net upgrade cost: ~$400 for double the storage, upgraded camera, and Apple Intelligence. Worth it? Probably, if your 128 GB is already full. Otherwise, wait for iPhone 18.
For more iPhone comparisons, see Swype Photo Cleaner for managing any iPhone's storage, our iPhone 17 complete storage guide, iPhone 17 storage tips, and iPhone 17 vs 16 storage.