An electronic device comprising: a communication module; and a control module configured to: establish, via the communication module, a connection between the electronic device and an external electronic device; in response to receiving a user input for changing a configuration setting value of the electronic device, change the configuration setting value of the electronic device and transmit, via the communication module, a signal indicative of the changed configuration setting value of the electronic device to the external electronic device; and receive, via the communication module, a signal indicative of a configuration setting value of the external electronic device from the external electronic device; wherein the control module is further configured to: synchronize, if the configuration setting value of the electronic device is different to the received configuration setting value of the external electronic device, the configuration setting value of the electronic device to a most recently changed configuration setting value among the configuration setting value of the electronic device and the received configuration setting value of the external electronic device; wherein the configuration setting value of the electronic device corresponds to one of activation or deactivation of a notification function of the electronic device, and wherein the configuration setting value of the external electronic device corresponds to one of activation or deactivation of a notification function of the external electronic device. a communication module; and a control module configured to: establish, via the communication module, a connection between the electronic device and an external electronic device; in response to receiving a user input for changing a configuration setting value of the electronic device, change the configuration setting value of the electronic device and transmit, via the communication module, a signal indicative of the changed configuration setting value of the electronic device to the external electronic device; and receive, via the communication module, a signal indicative of a configuration setting value of the external electronic device from the external electronic device; wherein the control module is further configured to: synchronize, if the configuration setting value of the electronic device is different to the received configuration setting value of the external electronic device, the configuration setting value of the electronic device to a most recently changed configuration setting value among the configuration setting value of the electronic device and the received configuration setting value of the external electronic device; wherein the configuration setting value of the electronic device corresponds to one of activation or deactivation of a notification function of the electronic device, and wherein the configuration setting value of the external electronic device corresponds to one of activation or deactivation of a notification function of the external electronic device. establish, via the communication module, a connection between the electronic device and an external electronic device; in response to receiving a user input for changing a configuration setting value of the electronic device, change the configuration setting value of the electronic device and transmit, via the communication module, a signal indicative of the changed configuration setting value of the electronic device to the external electronic device; and receive, via the communication module, a signal indicative of a configuration setting value of the external electronic device from the external electronic device; wherein the control module is further configured to: synchronize, if the configuration setting value of the electronic device is different to the received configuration setting value of the external electronic device, the configuration setting value of the electronic device to a most recently changed configuration setting value among the configuration setting value of the electronic device and the received configuration setting value of the external electronic device; wherein the configuration setting value of the electronic device corresponds to one of activation or deactivation of a notification function of the electronic device, and wherein the configuration setting value of the external electronic device corresponds to one of activation or deactivation of a notification function of the external electronic device. synchronize, if the configuration setting value of the electronic device is different to the received configuration setting value of the external electronic device, the configuration setting value of the electronic device to a most recently changed configuration setting value among the configuration setting value of the electronic device and the received configuration setting value of the external electronic device; wherein the configuration setting value of the electronic device corresponds to one of activation or deactivation of a notification function of the electronic device, and wherein the configuration setting value of the external electronic device corresponds to one of activation or deactivation of a notification function of the external electronic device.