Syncing with iTunes copies information from your computer to iPhone, and vice versa. You can sync by connecting iPhone to your computer, or you can set up iTunes to sync wirelessly with Wi-Fi. You can set iTunes to sync photos, videos, podcasts, apps, and more. For help syncing iPhone with your computer, open iTunes, then choose iTunes Help from the Help menu.
Sync wirelessly. Connect iPhone. Then in iTunes on your computer, select your iPhone, click Summary, and select "Sync with this iPhone over Wi-Fi."
If Wi-Fi syncing is turned on, iPhone syncs when it's connected to a power source, both iPhone and your computer are connected to the same wireless network, and iTunes is open on the computer.
Tips for syncing with iTunes on your computer
Connect iPhone to your computer, select it in iTunes, and set options in the different panes.
, and a password is required in order to restore the backup. If you
don't select this option, other passwords (such as those for mail
accounts) aren't included in the backup and you'll have to reenter
them if you use the backup to restore iPhone.If you use iCloud to store your contacts, calendars, and bookmarks, don't also sync them to iPhone using iTunes.