MyContactBackup

Mobile Contact Backup is the easiest way to backup and restore your contacts all from your phone without needing a computer or synchronization. You can backup all your contacts with a single touch and send yourself as a .vcf attachment via email.
All contacts can then easily be restored any time by simply opening .vcf file in your mailbox.
Key Features:
* Offline Backup. No need to sync to any server. Just email the backup file to yourself.
* Easy restore. No need to any app to restore backup file. Just tap on the *.vcf backup file .
* Easily transfer contacts between iOS Devices using just email client.
* Backup Contacts as VCF (VCard) or Export Contacts as CSV (Excel) file
* Delete All Contacts in Address Book