How to delete all contacts on Iphone

I assume we all  know how to delete a contact from your iOS device: Go to the inbuilt "Contacts" app Choose the contact to delete Click on "Edit" from the top-right corner Scroll all the way down till you find the "Delete Contact" button. Click that button It will ask for a reconfirmation. And you are done deleting your contact! Well, it's not too much work when we are talking about deleting just one contact, but