In preparation for the upcoming Verizon iPhone launch, you may notice the VZ Transfer app in the App Store. The free app only works on Verizon iPhones, which means it doesn't do anything yet - but that does not seem to be stopping some exceptionally clever people from downloading it, discovering it does nothing on an AT&T phone, and then giving it a one-star review.
VZ Transfer will transfer contacts from legacy phones (via Verizon's Backup Assistant) to the new Verizon iPhone. The transfer service will be verified via an access code sent through text message to your Verizon mobile number.