花了2天时间研究iPhone中锁屏图片和墙纸到底存放在哪个文件夹，最终终于找到是这2个文件：
Library/SpringBoard/LockBackground.cpbitmap
Library/SpringBoard/HomeBackground.cpbitmap
在此列出一些系统文件夹中的文件及用途：
Accessibility settings
Settings > General > Accessibility
Library/Preferences/com.apple.Accessibility.plist
Airplane Mode, WiFi, and Bluetooth
Also memorized WiFi networks
Library/Preferences/com.apple.preferences.network
Library/Preferences/com.apple.network.eapclient.tls.TrustExceptions.plist
SystemConfiguration/com.apple.network.identification.plist
SystemConfiguration/com.apple.wifi.plist
SystemConfiguration/preferences.plist
Calendar
Library/Calendar/*
Library/Preferences/com.apple.mobilecal
Call History
Library/CallHistory/*
Clock
Includes the current timezone, and World cities, timers, alarms, stopwatches
Library/Preferences/com.apple.mobiletimer.plist
Library/Preferences.com.apple.preferences.datetime.plist
Contacts
Library/AddressBook/*
Device name
SystemConfiguration/com.apple.mobilegestalt
FaceTime
Library/Preferences/com.apple.conference*
Keyboard Shortcuts
Settings > General > Keyboard > Shortcuts
Library/Keyboard/*
Language/Keyboard languages
Library/Preferences/.GlobalPreferences.plist
Library/Preferences/com.apple.Preferences.plist
Library/Preferences/com.apple.purplebuddy.plist
Location Services
Settings > Location Services
Library/locationd/*
Library/Preferences/com.apple.locationd.plist
Maps
Library/Maps/*
Library/Preferences/com.apple.Maps.plist
Music settings
Library/Preferences/com.apple.mobileipod.plist
Notes
Library/Notes/*
Library/Preferences/com.apple.mobilenotes.plist
Notification Center/Push Notification settings
Settings > Notifications
Library/BullitenBoard/*
Library/SpringBoard/PushStore/*
Library/SpringBoard/applicationstate.plist
Library/Preferences/com.apple.springboard.plist
Camera Roll
When replacing, you should delete all files in the respected folders first
Media/DCIM/*
Media/PhotoData/*
Library/Preferences/com.apple.mobileslideshow.plist
Homescreen icon layout
Note that this will be a different file if using a tweak like InfiniFolders
Library/SpringBoard/IconState.plist
Restrictions settings
Settings > General > Restrictions.
NOTE: This declares what is allowed by restrictions. If you are trying to bypass restrictions that have been set on you, just turn certain things to
Library/ConfigurationProfiles/PublicInfo/EffectiveUserSettings.plist
Library/ConfigurationProfiles/UserSettings.plist
Library/Preferences/com.apple.springboard.plist
Safari
Cookies, history, bookmarks, settings
Library/Cookies/Cookies.binarycookies
Library/Safari/*
Library/Preferences/com.apple.WebFoundation.plist
Safari homescreen bookmarks
Library/WebClips/*
Siri
Library/Preferences/com.apple.assistant*
SMS, MMS, iMessages, and iMessage/FaceTime settings
Library/Preferences/com.apple.imservice*
Library/Preferences/com.apple.madrid.plist
Library/Preferences/com.apple.MobileSMS.plist
Library/SMS/*
Sounds
Settings > Sounds
Library/Preferences/com.apple.preferences.sounds.plist
Library/Preferences/com.apple.springboard.plist
Stocks
Library/Preferences/com.apple.stocks.plist
Voice Memos
Media/Recordings/*
Voicemail
Library/Voicemail/*
Wallpaper
The HomeBackground files only exist if different from the LockBackground. CPBitmaps can be converted to PNG or JPEG with this handy website:
http://cpbitmap.cleverbyte.com.au/
Library/SpringBoard/LockBackground.cpbitmap
Library/SpringBoard/LockBackgroundThumbnail.jpg
Library/SpringBoard/HomeBackground.cpbitmap
Library/SpringBoard/HomeBackgroundThumbnail.jpg
Weather
Celcius/Fahrenheit, current city
Library/Preferences/com.apple.weather.plist
Here is some slightly more detailed information on each file for those that are interested.
keychain-backup.plist
Probably a backup of data stored in keychains-2.db, which stores various passwords such as WiFi, Passcode Lock, etc. (encrypted)
Library/AddressBook/AddressBook.sqlitedb
Contacts. These are the contacts which are in the "On my i[Pad/Phone/Pod touch]" group and are synced with iCloud, and are independent from contacts synced from mail accounts
Library/AddressBook/AddressBookImages.sqlitedb
-Contact images
Library/Accounts/Accounts3.sqlite
-Account info for the Calendars, Contacts,
App Store, and iTunes apps
Library/BullitenBoard/ClearedSections.plist
Logs the sections in Notification Center that have been recently "Clear"ed
Library/BullitenBoard/SectionInfo.plist
Notification settings for individual apps (Settings app > Notifications > [app name])
Library/BullitenBoard/SectionOrder.plist
The order of the items in Notification Center (Settings > Notifications)
Library/Caches/com.apple.WebAppCache/ApplicationCache.db
Related to data cached by websites
Library/Caches/locationd/clients.plist
Location settings for apps and System Services (Settings > Location Services)
Library/Caches/locationd/GyroCal.db
Gyroscope calibration
Library/Calendar/Calendar.sqlitedb
Calendar in its entirety
Library/Calendar/Extras.db
Extras for calendar
Library/CallHistory/call_history.db
Call history, including Phone and FaceTime
Library/ConfigurationProfiles/PublicInfo/EffectiveUserSettings.plist
Restrictions settings, such as which abilities are enabled (if restrictions are on)
Library/ConfigurationProfiles/UserSettings.plist
Appears to mirror EffectiveUserSettings.plist
Library/Cookies/com.apple.dataaccessd.[random string associated with an email account].binarycookies
Binary cookies for a specific email account
Library/Cookies/com.apple.itunesstored.2.sqlitedb
iTunes/App Store
cookies
Library/Cookies/Cookies.binarycookies
Safari's binary cookies
Library/DataAccess/AccountInformation.plist
Email data sync info
Library/DataAccess/ASFolders-[random string associated with an email account]
Plist containing folder info for a specific email account
Library/DataAccess/iCloud-[iCloud email account name]/.mboxCache.plist
iCloud email info
Library/DataAccess/iCloud-[iCloud email account name]/.OfflineCache/[number]
iCloud emails cached for offline
Library/itunesstored/itunesstored2.sqlitedb
iTunes/App Store
payment and download info
Library/itunesstored/itunesstored_private.sqlitedb
iTunes/App Store
info
Library/Keyboard/dynamic-text.dat
Appears to be a keylog, and then an alphabetical list of full words.
Library/Keyboard/UserDictionary.sqlite
User-managed autocorrections (Settings > General > Keyboard > Shortcuts)
Library/Keyboard/UserDictionaryWordKeyPairs.plist
Mirrors UserDictionary.sqlite in a different format and as a plist
Library/Mail/AutoFetchEnabled
Plist containing one true/false value of whether Fetch is enabled for Mail
Library/Maps/Bookmarks.plist
Maps bookmarks
Library/Maps/History.plist
Maps history
Library/Notes/notes.idx
Notes
Library/Notes/notes.sqlite
Notes
Library/Preferences/.GlobalPreferences.plist
International settings
Library/Preferences/AppBackup/
Created by AppBackup (a Cydia app for backing upp app data) if you use it, and contains app data backed up by it
Library/Preferences/com.[name of company].[name of service].plist
Settings for that service. These range from preferences in the Settings app to Cydia apps.
Library/Safari/Bookmarks.db
Safari bookmarks
Library/Safari/History.plist
Safari history
Library/Safari/SuspendState.plist
Suspended state of Safari, its multitasking is handled differently from most apps
Library/SMS/Attachments/[random string associated with an MMS]/[MMS file name].[extension]
An MMS file
Library/SMS/Attachments/[random string associated with an MMS]/[MMS file name]-preview-left.jpg
A preview/thumbnail of an MMS file
Library/SMS/sms.db
Messages, be they iMessages or texts
Library/SpringBoard/applicationstate.plist
App settings
Library/SpringBoard/DesiredIconState.plist
The
current
organization state of the icons on the home screen
Library/SpringBoard/IconState.plist
The last organization state of the home screen since boot, and is affected by DesiredIconState.plist and whatever is contained in /Applications and /var/mobile/Applications at boot
Library/SpringBoard/IconSupportState.plist
Acts as IconState.plist if you have IconSupport installed
Library/SpringBoard/LockBackground.cpbitmap
The lockscreen background, in the form of CPBitmap. Also used for the homescreen background if they are the same.
Library/SpringBoard/LockBackgroundThumbnail.jpg
Thumbnail of the lockscreen background, used in Settings > Wallpaper. Also used for the homescreen background thumbnail if they are the same.
Library/SpringBoard/HomeBackground.cpbitmap
The homescreen background, in the form of CPBitmap. Only exists if it is different from the lockscreen background.
Library/SpringBoard/HomeBackgroundThumbnail.jpg
Thumbnail of the homescreen background, used in Settings > Wallpaper. Only exists if HomeBackground.cpbitmap exists.
Library/SpringBoard/PushStore/com.[name of company].[name of app].pushstore
Plist containing push notification data for that app
Library/Voicemail/voicemail.db
Voicemail data
Library/WebClips/[random string associated with a homescreen bookmark].webclip/icon.png
Icon for a homescreen bookmark
Library/WebClips/[random string associated with a homescreen bookmark].webclip/Info.plist
Properties of a homescreen bookmark
Library/WebClips/[random string associated with a homescreen bookmark].webclip/startup.png
Splashscreen of a homescreen bookmark
Media/DCIM/[number1]APPLE/IMG_[number2].[extension]
Media file in the Camera Roll, be it photo, screenshot, video, or saved from elsewhere. Number1 is the number of the Camera Roll, which depends on how many Camera Rolls you've had and ranges from 100-999. Number2 is the chronological number of the file in the Camera Roll, which ranges from 0001-9999.
Media/PhotoData/Metadata/DCIM/[number >= 100]APPLE/IMG_[number of video in Camera Roll].JPG
Preview image of a video in the Camera Roll before you press the play button
Media/PhotoData/Metadata/DCIM/[number >= 100]APPLE/IMG_[number of video in Camera Roll].THM
Thumbnail of a video in the Camera Roll
Media/PhotoData/Metadata/PhotoData/Sync/[number >= 100]SYNCD/IMG_[number of video in Camera Roll].JPG
Corresponds to its parallel in Media/PhotoData/Metadata/DCIM/[number >= 100]APPLE/IMG_number of video in Camera Roll].JPG
Media/PhotoData/Metadata/PhotoData/Sync/[number >= 100]SYNCD/IMG_[number of video in Camera Roll].THM
Corresponds to its parallel in Media/PhotoData/Metadata/DCIM/[number >= 100]APPLE/IMG_number of video in Camera Roll].THM
Media/PhotoData/MISC/DCIM_APPLE.plist
States the current Camera Roll number and the number of the last media placed into the Camera Roll
Media/PhotoData/MISC/PreviewWellImage.tiff
Thumbnail of the Camera Roll when in the root of the Photos app
Media/PhotoData/Photos.sqlite
Photo data
Media/PhotoData/Photos.sqlite.aside
Appears to be some sort of backup of Photos.sqlite
Media/Recordings/[date] [time].m4a
Voice Memo, named YYYYMMDD HHMMSS.m4a
Media/Recordings/AssetManifest.plist
Manifest of Voice Memo data
Media/Recordings/Recordings.db
Voice Memo data
Media/Recprdings/SyncedAssets.plist
Sync info of Voice Memos
SystemConfiguration/com.apple.accounts.exists.plist
List of accounts that are enabled/disabled on your device
SystemConfiguration/com.apple.AutoWake.plist
List of times that the device is scheduled to automatically connect to WiFi (persistent Wifi for ya)
SystemConfiguration/com.apple.mobilegestalt
Contains the device name
SystemConfiguration/com.apple.network.identification.plist
Network info, such as memorized SSID's to automatically connect to
com.apple.radios.plist - Airplane Mode toggle
SystemConfiguration/com.apple.wifi.plist
Network info, such as memorized SSID's to automatically connect to
SystemConfiguration/preferences.plist
Network info