Method of operating function and resource of electronic device

A system for portable communication comprising:

• a portable device comprising:
• first communication circuitry to perform short-range communication;
• second communication circuitry to perform cellular communication;
• and
• a processor configured to establish, via the first communication circuitry, a short-range communication connection with a wearable device;
• and
• the wearable device comprising:
• third communication circuitry to perform short-range communication;
• fourth communication circuitry to perform cellular communication;
• and
• a processor configured to:
• establish, via the third communication circuitry, the short-range communication connection with the portable device;
• obtain information indicating whether the portable device supports cellular communication for the wearable device via the second communication circuitry;
• based at least in part on the obtained information and a determination that the wearable device is communicatively coupled with the portable device via the short-range communication connection, perform, based on a user input, a telephone call with respect a first external device using the short-range communication connection and a cellular communication connection between the portable device and the first external device, wherein the cellular communication connection is established via the second communication circuitry of the portable device.

A portable communication device comprising:

• first communication circuitry to perform a short-range communication;
• second communication circuitry to perform a cellular communication;
• and
• a processor configured to:
• establish, via the first communication circuitry, a short-range communication connection with a first external device;
• based on a first determination that the portable communication device is communicatively coupled with the first external device via the short-range communication connection and the first external device supports a cellular communication for the portable communication device via cellular communication circuitry of the first external device, perform, based on a user input, a telephone call with respect to a second external device using the short-range communication connection and a first cellular communication connection between the first external device and the second external device, wherein the first cellular communication connection is established via the cellular communication circuitry of the first external device;
• and
• based on a second determination that the portable communication device is not communicatively coupled with the first external device via the short-range communication connection, perform, based on a user input, a telephone call with respect to the second external device using a second cellular communication connection between the portable communication device and the second external device, wherein the second cellular communication connection is established via the second communication circuitry of the portable communication device.

A system for portable communication comprising:

• a portable device comprising:
• first communication circuitry to perform short-range communication;
• second communication circuitry to perform cellular communication;
• and
• a processor configured to establish, via the first communication circuitry, a short-range communication connection with a wearable device;
• and
• the wearable device comprising:
• third communication circuitry to perform short-range communication;
• fourth communication circuitry to perform cellular communication;
• and
• a processor configured to establish, via the third communication circuitry, the short-range communication connection with the portable device;
• wherein, based at least in part on user account information of the wearable device and a determination that the wearable device is communicatively coupled with the portable device via the short-range communication connection, the system is configured to perform, based on a user input received at the wearable device, a telephone call with respect to an external device using the short-range communication connection and a first cellular communication connection between the portable device and the external device, wherein the first cellular communication connection is established via the second communication circuitry of the portable device.