According to Macobserver , all 256GB models of the iPhone 17, including the 17, 17 Pro, and 17 Pro Max, are equipped with significantly slower flash memory than the higher capacity versions. This can affect the user experience.

Users have reasons to avoid buying the 256GB version of the iPhone 17
PHOTO: REUTERS
Performance tests show a clear difference in storage speeds between versions. Specifically, the 256GB version of the iPhone 17 series only scored between 90,000 and 100,000 points on AnTuTu, while the 512GB and 1TB versions scored around 150,000 points. Although the 2TB version of the iPhone 17 Pro Max has not been evaluated, it is expected to use high-speed memory as well.
It's worth noting that all iPhone Air models, regardless of storage capacity, use high-speed flash memory, a rare move by Apple that suggests the iPhone Air is intended to be a more balanced device.
Apple changes direction with iPhone 17
Tech review YouTuber DirectorFeng pointed out that Apple is no longer placing as much importance on upgrading storage capacity as before. Previously, moving from a lower to a higher capacity version often completely restored read and write performance. However, this is no longer true with the iPhone 17. If a user buys the 256 GB version and then upgrades to 512 GB or 1 TB, the read and write speeds will still be slower.
iPhone 17 Pro, iPhone Air: First complaints
While these numbers may not sound impressive on paper, in practice, users may not notice much of a difference in everyday tasks. Apps still launch quickly, photos save instantly, and common tasks run smoothly. However, the difference will be more noticeable in situations that require constant high performance, like video production or processing large files.
Still, the decision to use slower flash storage on the 256GB models raises questions about how much performance buyers are getting for their money. Apple has created a clear gap between the base and high-end models, although the slowdown may not affect day-to-day use.
If you care about transfer speeds, professional workflows, or future-proofing, you should consider avoiding the 256GB versions and starting with 512GB or more. If you want solid performance across all capacities, the iPhone Air might be the better choice this year.
Source: https://thanhnien.vn/chi-tiet-nho-khien-iphone-17-ban-256-gb-kem-hap-dan-185251004091729136.htm
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