Backups can be created in the following ways:
ÂÂ Once iPhone has been configured to sync with a particular computer, iTunes
automatically makes a backup of iPhone on that computer when you sync. iTunes
won’t automatically back up an iPhone that is not configured to sync with that
computer. If you have configured iPhone to automatically sync with iTunes on a
specific computer, iTunes will back up iPhone every time you connect it to that
computer. Automatic syncing is turned on by default. iTunes only makes one backup
each time you connect, even if you sync multiple times before disconnecting.
ÂÂ If you choose to update the software on iPhone, iTunes will back up iPhone
automatically, even if it is not configured to sync with iTunes on that computer.
ÂÂ If you choose to restore the software on iPhone, iTunes asks if you want to back up
iPhone before restoring.
If you use a Bluetooth headset or car kit with iPhone and you restore settings, you
must pair the Bluetooth device with iPhone again to use it.