An interchangeable Gametenna used in conjunction with a wireless telephone to play a game. The Gametenna includes an antenna having at least one radiating element for receiving and transmitting wireless signals, and a memory device which is physically coupled to the radiating element by at least one non-conductive mount which electrically isolates the memory device from the radiating element. The wireless telephone includes a transceiver, a first external interface electrically coupled to the transceiver, a processor and a second external interface electrically coupled to the processor. The Gametenna expands the capabilities of the wireless telephone when connected to the first and second external interfaces. The transceiver receives and transmits wireless signals via the first external interface and the radiating element of the antenna. The processor accesses data stored in the memory device via the second external interface. The data may include instructions for playing a game.