From my point of view and with my rather poor knowledge of iOS, the principle of a sandbox in iOS is the following:

• each app and its data is installed in a private area within the partition, but each app runs under the same user 'mobile'
• the sandbox only allows restricted and controlled access to system ressources (i.e. system files)
• the sandbox only allows restricted and controlled access to ressources like contacts, sms, mail, internet...
• the sandbox prevents an application from attacking another application's data

Are there any important functions of the sandbox that I'm not aware of?

I assume that with a jailbroken device, all security functions nof the sandbox are obsolet (i.e. an attacker can easily read data from other applications, can access system files,...)?

From my point of view and with my rather poor knowledge of iOS, the principle of a sandbox in iOS is the following:

• each app and its data is installed in a private area within the partition, but each app runs under the same user 'mobile'
• the sandbox only allows restricted and controlled access to system ressources (i.e. system files)
• the sandbox only allows restricted and controlled access to ressources like contacts, sms, mail, internet...
• the sandbox prevents an application from attacking another application's data

Are there any important functions of the sandbox that I left out?

I assume that with a jailbroken device, all security functions of the sandbox are obsolete (i.e. an attacker can easily read data from other applications, can access system files etc)?