A mobile communication device. The mobile communication device comprises a radio transceiver to communicatively couple the mobile communication device to a radio access network by a wireless communication link, a memory, a processor, and an operating system. The mobile communication device further comprises a client identification composition application stored in the memory that, when executed by the processor at activation, blocks the activation of the mobile communication device, and after looks up the service provider identification, stores the service provider identification in the memory, composes a client identification (ID) based on the service provider identification, and stores the client identification, unblocks the activation of the mobile communication device.