You can use iCloud or iTunes to automatically back up iPhone. If you choose to back up using iCloud, you can’t also use iTunes to automatically back up to your computer, but you can use iTunes to manually back up to your computer. iCloud backs up to iPhone daily over Wi-Fi, when it’s connected to a power source and is locked. The date and time of the last backup is listed at the bottom of the Storage & Backup screen.
iCloud backs up your:
Purchased music, movies, TV shows, apps, and books
Photos and videos in your Camera Roll
Home screen, folders, and app layout
Messages (iMessage, SMS, and MMS)
Note: Purchased content is not backed up in all areas.
Turn on iCloud backups. Go to Settings > iCloud, then log in with your Apple ID and password if required. Go to Storage & Backup, then turn on iCloud Backup. To turn on backups in iTunes, go to File > Devices > Back Up.
Back up immediately. Go to Settings > iCloud > Storage & Backup, then tap Back Up Now.
Encrypt your backup. iCloud backups are encrypted automatically so that your data is protected from unauthorized access both while it’s transmitted to your devices and when it’s stored in iCloud. If you’re using iTunes for your backup, select “Encrypt iPhone backup” in the iTunes Summary pane.
Manage your backups. Go to Settings > iCloud > Storage & Backup, then tap Manage Storage. Tap the name of your iPhone. You can manage which apps are backed up to iCloud, and remove existing backups. In iTunes, remove backups in iTunes Preferences.
Turn Camera Roll backup on or off. Go to Settings > iCloud > Storage & Backup, then tap Manage Storage. Tap the name of your iPhone, then turn Camera Roll backup on or off.
View the devices being backed up. Go to Settings > iCloud > Storage & Backup > Manage Storage.
Stop iCloud backups. Go to Settings > iCloud > Storage & Backup, then turn off iCloud Backup.
Music not purchased in iTunes isn’t backed up in iCloud. Use iTunes to back up and restore that content. See Sync with iTunes.
Important: Backups for music, movies, or TV show purchases are not available in all countries. Previous purchases may not be restored if they are no longer in the iTunes Store, App Store, or iBooks Store.
Purchased content and Photo Sharing content don’t count against your 5 GB of free iCloud storage.
For more information about backing up iPhone, see support.apple.com/kb/HT5262.