Apparatus and methods of differentiated data session access on a wireless communication device and dynamic source determination of provisioning information on a wireless communication device are disclosed. User Identity Modules (UIMs) are provisioned such that network-service applications resident on the wireless device are associated with a corresponding application profile within the UIM. Each network-service application has a corresponding network address identifier defined within the user profile. The network address associated with the identifier is used to establish a data session for the corresponding network service application. By providing for application-specific network addresses, service providers and/or network operators can differentiate between what services a user is accessing during a data session. In addition, the UIMs may be provisioned with priority category identifiers that allow the associated network-service application to be prioritized for data session establishment.