Method of operating function and resource of electronic device

A portable communication device comprising:

• a touchscreen display;
• a first communication circuitry to perform a short-range communication;
• a second communication circuitry to perform a cellular communication;
• and
• a processor configured to:
• establish, via the first communication circuitry, a communication connection with a first external device;
• based at least in part on a determination that the portable communication device is communicatively coupled with the first external device via the communication connection, transmit a first signal to the first external device via the communication connection such that a cellular communication circuitry of the first external device is to be deactivated based at least in part on the first signal;
• while the cellular communication circuitry of the first external device is deactivated, receive, from the first external device via the first communication circuitry, a second signal to make an outgoing call from the first external device to a second external device;
• and
• establish, using the second communication circuitry, a call session with respect to the second external device such that the outgoing call is to be performed based at least in part on the call session.

A portable communication device comprising:

• a first communication circuitry configured to perform a short-range communication;
• a second communication circuitry configured to perform a cellular communication;
• and
• a processor configured to:
• establish, via the first communication module, a communication connection with a first external device;
• based at least in part on a determination that the portable communication device is communicatively coupled with the first external device via the communication connection, transmit a first signal to the first external device via the communication connection such that a cellular communication circuitry of the first external device is to be deactivated based at least in part on the first signal;
• while the cellular communication circuitry of the first external device is deactivated, receive an incoming call from a second external device via the second communication circuitry;
• and
• transmit a second signal corresponding to the incoming call to the first external device via the communication connection such that a graphical user interface corresponding to the incoming call is to be displayed at the first external device based at least in part on the second signal.