iPhone was 256 now 255

App & System Services Hardware
AmarChiefy OP
Created Jul ’24
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For some reason since I’ve downloaded iOS 18e etc I have noticed my phone has gone from 256gb to 255gb. Wonder why?

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Claude31 OP
Jul ’24

I suppose you speak of capacity information ? It is effectively surprising to see a value that is not power of 2.

I see 2 possible reasons:

  • a bug in iOS 18.
  • a better evaluation of exact memory, excluding out of order memory cells (due to iPhone ageing). Read here https://www.quora.com/Do-flash-drives-degrade-over-time

In addition, it is known that computation of available storage has regularly changed over iOS versions. 1 GB difference over 256 is a very small adjustment.

Read this thread to see how much it has changed over time : https://discussions.apple.com/thread/253222773?sortBy=best

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