Most iPhone owners have been using iTunes to back up their iPhones. This is a smart move, since your data will be saved to your computer in the event something happens to the iPhone. iTunes will restore from the backup file if necessary.
But what exactly does iTunes back up? Contacts? Text messages? Here's a complete list. Each iPhone firmware version backs up the following items:
iPhone OS 1.1 and later:
- Address Book and Address Book favorites
- App settings, preferences and data
- Calendar accounts
- Call history
- Camera roll photos and captures
- Google Map bookmarks, recent searches, and the current location on the map
- Keychain (only restores to same iPhone)
- Mail accounts
- MobileSafari bookmarks, cookies, history and currently displayed pages
- Network settings including Wi-Fi hotspots
- Notes
- Paired Bluetooth devices (only restores to same iPhone)
- Saved corrections (entered when rejecting a suggested spelling)
- SMS messages
- Wallpapers
- Web clips
- YouTube bookmarks
- Voicemail token (only restores to iPhone with your SIM card)
iPhone 2.0 and later:
- App Store Application data
- List of External Sync Sources (Mobile Me, etc.)
- Managed Configurations and Profiles
- Microsoft Exchange account configurations
- Nike + iPod saved workouts and settings
iPhone 3.0 and later:
- In-app purchases
- Individual app preferences for allowing use of location services
- MobileSafari web page autofill
- Offline web application cache and database
- Trusted hosts with certificates that cannot be verified
- Videos in camera roll (only smaller than 2GB)
- Voice memos
- Web sites approved to use location services
See this tip to speed up the time it takes for iTunes to perform a backup of your iPhone.
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