2 years later..
And this is still THE app I use for my contacts to backup and restore when getting a new phone or having erased a phone for whatever reason. It just works simply and perfectly EVERY TIME. No need to bother looking at other apps, this one does the job.
iBridget about
Contacts Backup & Transfer - Sync, copy and export your whole address book in vcard/vcf format, v1.3.6