Mobile communication system, different mobile devices sharing same phone number on mobile communication system, and method of providing mobile communication service between different mobile devices sharing same phone number

摘要

A mobile device configured to share a phone number of another mobile device on a mobile communication system, the mobile device including: a controller configured to, after determining that a phone function of the another mobile device is deactivated, activate a phone function of the mobile device to which the phone number of the another mobile device is assigned; and a communicator configured to perform a mobile communication function using the phone number when the phone function of the mobile device is activated.