When you synchronize your iPhone with iTunes on your computer, iTunes backs up most of the data on your device, including your contacts. ITunes automatically deletes old backups, so you can lose important data if you lose the backups. For example, your contacts may get deleted when you perform a Google Mobile sync. You can't prevent iTunes from deleting old backups, but you can save the backups manually. You can then restore the backups and use them to recover the data on your iPhone.
Press "Windows-X" to open the Windows Tools menu and choose "File Explorer" from the menu to open the File Explorer.
Click the "View" tab and then enable the "Hidden Items" option in the Show/Hide group near the top of the File Explorer window to view hidden files and folders.
Select the system drive and open the folder named Users\YourUserName\AppData\Roaming\Apple Computer\MobileSync\Backup.
Select the subfolder you find inside the Backup folder and press "Ctrl-C" to copy it to the clipboard.
Navigate to the folder where you wish to store the backups and press "Ctrl-V" to paste the folder from the clipboard.
Tips & Warnings
- You can save multiple backups in the same folder because the backup folder names are different.
- Information in this article applies to iOS 6 and iTunes 11. It may vary slightly or significantly with other versions or products.