Mobile communication in a network-device environment

A system of provisioning contact information associated with one or more contacts of a communication device user may include a first processing device associated with a first service provider, a first computer-readable storage medium in communication with the first processing device and a second processing device associated with a second service provider and in communication with the first processing device. The first computer-readable storage medium may include instructions for receiving a mobile device identifier corresponding to a mobile device associated with a user of a second service provider, sending a message having an authorization code to the mobile device associated with the user, and receiving the mobile device identifier and the authorization code, receiving contact information associated with one or more contacts of an address book associated with the user, updating the received contact information and updating contact information associated with the user in one or more second address books.