Mass contact delete

Hey there, mifansan.

Below is the only way to delete a contact at this time via iPhone:

"Delete a contact

When you delete a contact, it permanently deletes it from your device. And if you delete a contact from your email account, you also permanently delete the contact from all devices signed into that email account.

Here's how to delete a contact:

1. Open Contacts and tap the contact that you want to delete.
2. Tap Edit.
3. Scroll Down and tap Delete Contact then tap Delete Contact again to confirm."

You can read more about managing contacts within the resource you came to us from: Manage and delete contacts on your iPhone, iPad, or iPod touch - Apple Support

If your contacts are syncing to your iPhone from an email account (Gmail, Yahoo!, so on), you could log into that account and see if there is a way to delete multiple contacts at once that way instead.

Take care.