Memory device for a cellular telephone

A memory device for use with a cellular telephone capable of communicating with a customer activation center (CAC) via a cellular telephone network. The memory device includes a dummy mobile identification number (MIN). An instruction can cause the cellular telephone to use the dummy MIN to gain access to the cellular telephone network and to use a radio frequency (RF) transmitter of the cellular telephone to send the dummy MIN to the CAC. Another instruction can cause the cellular telephone to use an RF receiver of the cellular telephone to receive a valid MIN from the CAC over the cellular telephone network. A further instruction can cause the cellular telephone to store the valid MIN in the cellular telephone. The memory device can be implemented as a personal computer memory card international association (PCMCIA) card.