Patent ID: 7421269

Claim:
A method of operating electrical circuitry included in an user exchangeable cover part that is electrically interconnected to a wireless terminal by an electrical connector, the method comprising: identifying a class of a user exchangeable cover part; and operating the electrical circuitry of the user exchangeable cover part in dependence upon an identification of the user exchangeable cover part, wherein the electrical circuitry that is operated in dependence upon the identification of the user exchangeable cover part comprises circuitry for supporting a user interface of the wireless terminal and circuitry in addition to or other than circuitry included within a display screen of the user interface, and wherein the connector has a plurality of pins, and at least one of the connector pins is operated in an identification state for sensing a circuit element value included in an identification unit configured to identify the class of the user exchangeable cover part and which is part of the user exchangeable cover part, and afterwards is operated in an operation state for transferring electrical signals between the wireless terminal and the electrical circuitry of the user exchangeable cover part.