Information Technology Reference
In-Depth Information
Apart from the standard files, the backup directory also contains hundreds of backup files
with varying file extensions depending on the version of iTunes used to create the backup,
as described earlier. In the following screenshot, the backup was created with the latest
version of iTunes in which the files do not contain a file extension. The backup files are
uniquely named with a 40-character hexadecimal string. These filenames signify a unique
identifier for each data set copied from the iPhone.
iPhone backup files
In iOS, files are categorized into 12 domains. All of the application files are classified into
AppDomain
and other files on the file system are classified into 11 system domains
shown in the following screenshot. The list of system domains is stored in a property list
file located under
/System/Library/Backup/Domains.plist
on the device.