How to delete all contacts on iphone 5?

How to Delete Contacts on an iPhone. Five Methods: Using the Contacts App Deleting All iCloud Contacts Disabling Contacts from Email Accounts Disabling Contact Suggestions Using Groups Community Q&A. This wikiHow teaches you how to remove unwanted contacts from your iPhone's Contacts app, iCloud, and iTunes. read more

How to delete multiple contacts from your iPhone all at once. Download the Groups app on your iPhone. Launch the Groups app on your iPhone. Grant Groups access to your contacts when prompted. Select All Contacts from the Groups list. Go through your contacts and mark the ones you'd like to delete by tapping on the circle outline to the left of their name. read more

One of the easiest ways to delete all contacts on iPhone without deleting other data works by connecting your both iPhone and Mac to one iCloud account. On your Mac, open the Contacts app found in "Applications". In older versions of OS X it will be named "Address Book" Step 6. read more