Most of iPhone customer usually make an iTunes backup for preventing data lost. When your iPhone data deleted or lost for some reasons, you can choose restore them from iTunes. But if you lost your iPhone by accident, you must need to extract your all iPhone data from iTunes backup.
And you can check the backup information in iTunes at first. iTunes Preferences->Device, it will list your all iTunes backups.
Now we extract iTunes backup just three steps
Step 1: Download and install Data Recovery for iPhone on your PC or Mac.
Step 2: Open Data Recovery for iPhone on your computer and select iTunes backup model.
Step 3: After the scanning has finished, check the iPhone data to save them on your computer.