A mobile hub can receive from a mobile device a request to authenticate a user of the mobile device with the mobile hub. Responsive to receiving the request, a user profile of the user stored on the mobile hub can be identified. A first of a plurality of mobile networks indicated in the user profile as being available to the user can be identified. The first mobile network can satisfy at least one user specified criterion associated with the user profile. A subscriber authentication associated with the user profile can be selected. The subscriber authentication can be configured to authenticate the user with the first of the plurality of mobile networks and configured to be processed by the first mobile device to automatically establish presence on the first mobile network. The subscriber authentication can be communicated to the mobile device.