A wireless network system (118, 118A, 121, 122, 123, 126, 127, 132, 160, 180, 182, 270, 420, 1618, 1619, 1621) communicatively coupled to an end-user device over a wireless access network (109, 110, 120, 210, 405, 415, 1610), the wireless network system comprising: one or more processors configured to establish, in cooperation with one or more device agents on the end-user device, a secure control link enabling secure communications between the wireless network system and the one or more device agents over the wireless access network, wherein the secure control link is secured by an encryption protocol; characterized by a service provisioning interface to receive service selection information from a plurality of network operators; and a service interface (1638, 2110, 2120), comprising a uniform service selection interface, enabling the one or more processors to communicate over the secure control link with the one or more device agents (1663, 1691, 1694, 1695, 1696, 1697, 1804, 1811)to: based on one or more credentials of the end-user device, provide service selection information from a plurality of network operators to the one or more device agents, the service selection information corresponding to a particular device group or user indicated by the one or more credentials, the service selection information to assist the one or more device agents to change at least an aspect of a wireless service associated with the end-user device, and provide, to the one or more device agents, information about a service usage by the end-user device, the information about the service usage by the end-user device enabling the one or more device agents to present, through a user interface of the end-user device, a notification associated with the service usage by the end-user device. one or more processors configured to establish, in cooperation with one or more device agents on the end-user device, a secure control link enabling secure communications between the wireless network system and the one or more device agents over the wireless access network, wherein the secure control link is secured by an encryption protocol; characterized by a service provisioning interface to receive service selection information from a plurality of network operators; and a service interface (1638, 2110, 2120), comprising a uniform service selection interface, enabling the one or more processors to communicate over the secure control link with the one or more device agents (1663, 1691, 1694, 1695, 1696, 1697, 1804, 1811)to: based on one or more credentials of the end-user device, provide service selection information from a plurality of network operators to the one or more device agents, the service selection information corresponding to a particular device group or user indicated by the one or more credentials, the service selection information to assist the one or more device agents to change at least an aspect of a wireless service associated with the end-user device, and provide, to the one or more device agents, information about a service usage by the end-user device, the information about the service usage by the end-user device enabling the one or more device agents to present, through a user interface of the end-user device, a notification associated with the service usage by the end-user device. based on one or more credentials of the end-user device, provide service selection information from a plurality of network operators to the one or more device agents, the service selection information corresponding to a particular device group or user indicated by the one or more credentials, the service selection information to assist the one or more device agents to change at least an aspect of a wireless service associated with the end-user device, and provide, to the one or more device agents, information about a service usage by the end-user device, the information about the service usage by the end-user device enabling the one or more device agents to present, through a user interface of the end-user device, a notification associated with the service usage by the end-user device.