If you want to delete your iPhone contacts safely and permanently, then you need the iPhone Data Cleaner. Unlike other applications, which don't include deleting your phonebook, this program can delete your contacts, photos, documents, user IDs, passwords, settings, videos, music and more. It even offers two erase modes, which is ideal for those users who want to completely clean their smartphones. It supports all iOS devices including the latest iPhone 5s, iPads and iPod Touch models.
Here's a simple use guide:
Download and install the iPhone Data Cleaner on your Computer.
Connect your iPhone to your Computer using a USB cable.
Once is recognizes it, select "Remove deleted files" on the main interface.
Choose the security level you want: "Low", "Medium" or "High".
Click the "Start" button and once it's completed press "Done".
With iPhone Data Cleaner the probability of recovering your information is zero. Once you've deleted something, it'll be permanently deleted from the device. We strongly recommend to create backup copies before deleting your iPhone contacts, especially for less advanced users.
Deleting specific contacts or complete lists is easy thanks to the tricks and methods we just explained. To protect your privacy and avoid information leaks, chose a method or program that ensures zero chance of recovery, such as the iPhone Data Cleaner. Moreover, different to other applications, you can use this software to permanently delete not only phone book entries, but also other types of IOS files.