uplne jednoduse a mas vic moznosti...
1) synchronizace s outlookem a outlook pak jednoduse v PC zazalohujes
2) jelikoz mas jailbreak tak mas moznost pres SSH zasahovat do telefonu, tudiz neni problem zalohovat jeden soubor v iphonu do PC ktery obsahuje vsechny kontakty

tady najdes db pro zalohu... (snad spravne

)
SMS/var/root/Library/SMS/sms.db
Calendar/var/root/Library/Calendar/Calendar.sqlitedb
Notes/var/root/Library/Notes/notes.db
Call History/var/root/Library/CallHistory/call_history.db
Address Book/var/root/Library/AddressBook/AddressBook.sqlitedb
/var/root/Library/AddressBook/AddressBookImages.sqlitedb
Photos/var/root/Media/DCIM/100Apple
(synchronizovane fotky)-> /private/var/root/Media/Photos.
Safari- bookmarks a historie /var/root/Library/Bookmarks.plist and History.plist
Cookies/var/root/Library/Cookies/Cookies.plist.