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My understanding of reading apple security document below

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 ?

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up vote 1 down vote accepted

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.

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is data on 'data partition' encrypted and cannot be accessed by the jailbroken system ? – portoalet Aug 30 '12 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 '12 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? – portoalet Aug 30 '12 at 17:08
Nope. As I said, it doesn’t modify the data partition, which is encrypted. – duci9y Aug 30 '12 at 17:29

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