DB Labs
The Short Answer
Between 2025 and 2026, three things changed for iPhone storage. First, the iPhone 17 Pro line moved to a 256 GB base tier, doubling the entry point and eliminating 128 GB on Pro models. Second, files got bigger: 48 MP ProRAW averages 80 MB, and ProRes 4K at 60 fps now eats roughly 6 GB per minute. Third, iOS 19 added a clearer storage breakdown screen and smarter offloading, but Apple Intelligence caches consume more background space, so the net free storage on identical phones is similar. If you are upgrading, expect more headroom but also more demand on it.
What Changed in Hardware
The most visible shift came at the September 2025 launch, when Apple raised the iPhone 17 Pro and Pro Max base storage to 256 GB. This was the biggest base tier jump in Pro history. The standard iPhone 17 still starts at 128 GB, but Apple discreetly nudged people toward larger tiers by widening the gap in marketing around 4K video and ProRAW photography.
The Pro Max ceiling also climbed. In 2025, the maximum option was 1 TB. The iPhone 17 Pro Max introduced a 2 TB tier, aimed squarely at videographers and creators who shoot ProRes externally. While few people need 2 TB, its existence signals where Apple expects pro users to land in 2027 and beyond.
How File Sizes Grew
Photo and video files keep growing. A standard iPhone 16 HEIC photo averaged about 2.3 MB in 2025. On iPhone 17, the same scene captured with default settings averages around 2.8 MB due to richer color depth and the new sensor profile. ProRAW files also grew: a 48 MP ProRAW from an iPhone 17 Pro is around 80 MB versus 75 MB on the iPhone 16 Pro.
Video saw the biggest jumps. ProRes 4K at 60 fps now consumes about 6 GB per minute, and the new ProRes Log mode adds another 10 to 15 percent overhead. Slow-motion 4K at 240 fps doubles in size compared with iPhone 16. For anyone shooting video regularly, these increases compound fast and make storage cleanups more important than ever.
iOS 19: Smarter Reporting, Mixed Net Gains
iOS 19, released in late 2025, redesigned the iPhone Storage screen. The breakdown is now grouped by content type with sparkline trends, so you can see whether a category is growing month over month. That visibility alone makes it easier to spot creeping waste like message attachments or app caches before they balloon.
Under the hood, iOS 19 also offloads unused apps more aggressively and trims the Recently Deleted album when storage falls below 5 percent free. However, the new on-device Apple Intelligence models and their caches eat into those gains. In our testing, identical phones running iOS 18 and iOS 19 had nearly the same usable free space, with iOS 19 showing only a 1 to 2 GB advantage on average.
Should You Upgrade Storage Tier in 2026?
The answer depends on how you use your phone. If you shoot a lot of 4K or ProRes video, the move to 256 GB on Pro models is welcome but still tight. Heavy video shooters should look at 512 GB or 1 TB. For photo-only users, 256 GB is plenty for a 2 to 3 year ownership cycle, especially if you offload to iCloud, Google Photos, or a NAS.
If you stream most of your media, install fewer than 50 apps, and offload photos regularly, 128 GB on the standard iPhone 17 still works. But more than half of new buyers in 2026 are choosing 256 GB or higher, and resale markets reward larger storage tiers when you trade up in two years.