Abstract: A wireless communications network includes at least one mobile station and a device management server. Each mobile station has a plurality of operating parameters stored within a removable user identity module (R-UIM), with at least one of the parameters capable of being downloaded to the mobile station. The device management server is capable of controlling a message center to transmit a text message to the mobile station over the network such that the mobile station establishes a traffic channel connection between the mobile station and the device management server. The mobile station can also establish an identity with the device management server such that the device management server can download operating parameters to the mobile station via the traffic channel. In turn, the mobile station is capable of storing the operating parameters in the R-UIM. The device management server can then terminate the traffic channel connection.