My understanding of reading apple security document below http://images.apple.com/ipad/business/pdf/iPad_Security_Overview.pdf

is that using iphone4s or ipad3,

and setting a complex passcode,

the data on the iPhone/ipad is encrypted when iphone/ipad is locked.

If iPhone/ipad is jailbroken, does it mean the original data is lost ?

1 Answer 1


There are two partitions on all iOS devices. One is for the system, other is for the data. Jailbreaking only affects the System partition. So jailbreaking doesn’t affect your data.

  • is data on 'data partition' encrypted and cannot be accessed by the jailbroken system ?
    – Lydon Ch
    Aug 30, 2012 at 17:02
  • If the jailbroken system asks for your passcode while unlocking, then you can access your data. By the way, can you give a little context on the problem? I can’t see how you could’ve arrived in a situation like this.
    – duci9y
    Aug 30, 2012 at 17:04
  • i'm just wondering whether jailbreaking (without supplying passcode while jailbreaking) can bypass ipad3/iphone4s passcode-locked system and access all data (which is supposedly encrypted by the passcode). can it?
    – Lydon Ch
    Aug 30, 2012 at 17:08
  • Nope. As I said, it doesn’t modify the data partition, which is encrypted.
    – duci9y
    Aug 30, 2012 at 17:29

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